WO2013044804A1 - Method and device for co-channel interference coordination - Google Patents
Method and device for co-channel interference coordination Download PDFInfo
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- WO2013044804A1 WO2013044804A1 PCT/CN2012/082057 CN2012082057W WO2013044804A1 WO 2013044804 A1 WO2013044804 A1 WO 2013044804A1 CN 2012082057 W CN2012082057 W CN 2012082057W WO 2013044804 A1 WO2013044804 A1 WO 2013044804A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/27—Control channels or signalling for resource management between access points
Definitions
- the present invention relates to the field of wireless communications, and in particular, to a co-channel interference coordination method and apparatus. Background technique
- wireless spectrum resources are an indispensable and extremely limited resource.
- the fixed allocation and dynamic use of the spectrum may result in a large amount of spectrum not being fully utilized, and ensuring that it does not interfere with authorized users.
- Cognitive radio technology can improve the utilization of spectrum, and efficiently and flexibly use the spectrum that is not used by the main system (authorization system) in a certain time and space area.
- the cognitive communication wireless communication equipment can follow some kind of "opportunistic".
- the way to use other system licensed frequency bands of course, this must be established in the case that the licensed frequency band is idle or the licensed frequency band has only a small number of services being communicated, which greatly improves the utilization of spectrum resources and solves the growing demand for wireless communication services. Contradictions with increasingly scarce spectrum resources.
- the secondary system can obtain the available spectrum resource information of the primary system through access to the authorized service database, and the secondary system acquires the spectrum resource and allocates it to the base station, due to the requested spectrum resource. Limited, there may be cases where multiple base stations use the same spectrum, and co-channel interference between cells will occur.
- frequency reuse which increases the capacity of the system to a certain extent and improves the spectrum utilization, but also increases the degree of interference of the system, and the larger the same frequency reuse coefficient. The more serious the interference, the direct impact on the quality of the user's call, and even the call drop or the inability to establish a normal call.
- the LTE system mainly suppresses randomization and interference cancellation for the same-frequency interference.
- the interference randomization method mainly includes cell-specific scrambling and cell-specific interleaving. The method is simple and feasible, but the performance is not good; the interference cancellation can be significantly improved. The system characteristics at the edge of the cell obtain higher spectral efficiency, but are not suitable for services with smaller bandwidth, and the complexity of the receiver and the synchronization between cells are also required;
- the technical problem to be solved by the present invention is to provide a co-channel interference coordination method and device to solve the problem of large inter-frequency interference in a small interval.
- the present invention provides a co-channel interference coordination method, which includes:
- interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station where the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered frequency, the interfered base station
- the spectrum used by the adjacent frequency base station is adjacent to the interfered spectrum
- the step of acquiring the interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station includes:
- the interfered base station, the same-frequency base station of the interfered base station, and the adjacent-frequency base station of the interfered base station feed back interference coordination parameter information.
- the co-frequency interference coordination request carries a central frequency point and a bandwidth of the interfered spectrum of the interfered base station, and determines the interfered base station according to the central frequency point and bandwidth in the co-channel interference coordination request.
- the triggering event that the interfered base station sends the co-channel interference coordination request is for the same interfered spectrum, and the percentage of the terminal that is subjected to the same-frequency interference greater than the preset interference-intensity threshold is compared with the terminal that reports the measurement result.
- the number of terminals that exceed a certain preset value or whose strength of the same-frequency interference is greater than the interference strength threshold exceeds a certain preset value.
- the interference coordination parameter information of the interfered base station and its co-frequency base station includes information of a current base station for determining a power allocation weight of an intra-frequency base station, and a position of a reference point in the current base station, The minimum value of the maximum interference level that can be accepted at each point in the current coverage area of the base station, the path loss between the intra-frequency base station of the current base station and the reference point, the antenna pattern of the current base station, and the upper limit value of the current base station's current transmit power.
- the interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent frequency base station and a reference point in the same frequency base station, an antenna pattern of the adjacent frequency base station, and adjacent frequency interference suppression. (ACIR);
- the reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station.
- the information used by the current base station to determine the power allocation weight of the same frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
- the step of performing interference coordination on the interfered base station and its co-frequency base station according to the interference coordination parameter comprises:
- the victim base station and its co-frequency base station are notified to adjust the transmit power to be less than or equal to the maximum transmit power.
- the present invention also provides a co-channel interference coordination device, the device comprising:
- the interference coordination request receiving unit is configured to: receive the co-channel interference coordination request sent by the interfered base station; and the interference coordination parameter information acquiring unit is configured to: acquire interference of the interfered base station, the same-frequency base station, and the adjacent-frequency base station Coordinating the parameter information, wherein the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered spectrum, and the spectrum used by the adjacent-frequency base station of the interfered base station is adjacent to the interfered frequency;
- An interference coordination unit configured to: the interfered base station according to the interference coordination parameter and The same frequency base station performs interference coordination.
- the interference coordination parameter information acquiring unit includes:
- a neighboring frequency base station determining module configured to: determine, according to the co-frequency interference coordination request, an intra-frequency base station of the interfered base station and an adjacent-frequency base station of the interfered base station;
- the information sending module is configured to: send an interference coordination parameter information request to the interfered base station, the same-frequency base station of the interfered base station, and an adjacent-frequency base station of the interfered base station;
- the information receiving module is configured to: receive the interference coordination parameter information fed back by the interfered base station, the same-frequency base station of the interfered base station, and the adjacent-frequency base station of the interfered base station.
- the interference coordination parameter information of the interfered base station and its co-frequency base station includes information of a current base station for determining a power allocation weight of an intra-frequency base station, a position of a reference point in a current base station, and points in a current base station coverage area.
- the interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent base station and a reference point in the same-frequency base station, an antenna pattern of the adjacent-frequency base station, and adjacent-channel interference suppression ( ACIR ) ;
- the reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station;
- the information used by the current base station to determine the allocation weight of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
- the interference coordination unit comprises:
- the power weight allocation module is configured to: allocate power weights to the interfered base station and its same-frequency base station according to the information used to determine the power allocation weight of the same-frequency base station;
- the maximum transmit power calculation module is configured to: set, according to the power weight assignment result, other interference coordination parameter information, and the current transmit power upper limit value of the interfered base station and the same-frequency base station, that the downlink interference is acceptable, the interfered base station And the maximum transmit power of the same frequency base station;
- the power adjustment notification module is configured to: notify the interfered base station and its co-frequency base station to adjust the transmit power to be less than or equal to the maximum transmit power.
- the present invention also provides a co-channel interference coordination device, the device comprising:
- Memory set to: store instructions
- a processor configured to: coupled to the memory, the processor configured to execute instructions stored in the memory, wherein the processor is configured to:
- interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station where the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered frequency, the interfered base station
- the spectrum used by the adjacent frequency base station is adjacent to the interfered spectrum
- the interference coordination parameter information of the interfered base station and its co-frequency base station includes information of a current base station for determining a power allocation weight of an intra-frequency base station, a position of a reference point in a current base station, and points in a current base station coverage area.
- the interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent base station and a reference point in the same-frequency base station, an antenna pattern of the adjacent-frequency base station, and adjacent-channel interference suppression ( ACIR ) ;
- the reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station;
- the information used by the current base station to determine the allocation weight of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
- the power of the same-frequency base station can be adjusted based on the acquired information, thereby reducing co-channel interference between cells.
- BRIEF abstract 1 is a schematic diagram of a co-channel interference coordination method according to an embodiment of the present invention.
- FIG. 2 is a schematic diagram of an application scenario according to an embodiment of the present invention.
- Figure 3 is a schematic diagram of downlink interference between cells
- Figure 4 is a schematic diagram of reference point selection
- FIG. 5 is a signaling flowchart of an application example 1 of the same-frequency interference coordination information method
- FIG. 6 is a flowchart of determining a base station weight according to a priority of a service user of a base station and a number of users corresponding to each priority, and implementing power control;
- FIG. 7 is a flow chart for determining base station weights and implementing power control according to the load status of the base station;
- FIG. 8 is a flow chart for determining power according to the priority of the service users of the base station, the number of users corresponding to each priority, and the load status of the base station, and implementing power control.
- FIG. 9 is a schematic structural diagram of a module of a co-channel interference coordination apparatus according to an embodiment of the present invention. Preferred embodiment of the invention
- Power control is a key technology in wireless communication systems that improves spectrum utilization and reduces power consumption.
- the power of the transmitter will affect the quality of the link signal and the interference environment of the wireless system.
- the effective power control of the base station can be performed as much as possible while maintaining the quality of the link call, which can reduce the downlink interference caused by the base station to the user terminal. If the system knows the relevant parameter information for power control, it can effectively control the downlink co-channel interference between cells.
- the embodiment of the present invention provides a co-channel interference coordination method for a downlink interference problem generated when different base stations use the same spectrum. As shown in FIG. 1, the method includes:
- Step 101 Receive a co-channel interference coordination request sent by the interfered base station.
- the method further includes: performing interference measurement by the base station 1 together with the subordinate terminal, and determining, according to the measurement result, whether to send the co-channel interference coordination request to the central control node;
- Step 102 Obtain interference coordination parameter information of the interfered base station, its co-frequency base station, and an adjacent-frequency base station, where the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered spectrum.
- the spectrum used by the adjacent base station of the interfering base station is adjacent to the interfered frequency;
- the obtaining the interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station includes:
- the interfered base station, the same-frequency base station of the interfered base station, and the adjacent-frequency base station of the interfered base station feed back interference coordination parameter information.
- the co-frequency interference coordination request carries a central frequency point and a bandwidth of the interfered spectrum of the interfered base station, and determines the interfered base station according to the central frequency point and bandwidth in the co-frequency interference coordination request.
- Step 103 Perform interference coordination on the interfered base station and its same-frequency base station according to the interference coordination parameter.
- the interference coordination parameter information of the same-frequency base station includes information used by the current base station to determine the power allocation weight of the same-frequency base station, the position of the reference point in the current base station, and the minimum value of the maximum interference level acceptable at each point in the coverage area of the current base station.
- the interference coordination parameter information of the adjacent frequency base station includes a path loss between the adjacent frequency base station and a reference point in the same frequency base station, an antenna pattern of the adjacent frequency base station, and adjacent channel interference suppression (ACIR);
- the information for determining the power allocation weight of the same-frequency base station includes, but is not limited to, the priority of the service user subordinate to the base station, the number of users corresponding to each priority, and/or the load status of the base station;
- the priority of the user refers to the user level selected by the user when the user opens the account, or the user level determined according to the user's consumption behavior and/or the user's QoS (Quality of Service) requirement;
- the load status refers to a load level determined by the base station according to current radio resource status (Radio Resource Status) and/or integrated cell available capacity (Available Capacity) information;
- the reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station;
- the method for determining the path loss includes but is not limited to road test, simulation, and system warm-up;
- the method for the center control node to perform interference coordination is that the central control node performs power control on the same frequency base station.
- FIG. 2 An application scenario corresponding to the invention is shown in Figure 2.
- the main network element involved has a central control node.
- CCP Central control point
- base station base station
- the central control node is mainly responsible for coordinating the allocation of the primary system idle spectrum resources to the subordinate base stations according to the primary system idle spectrum resource application proposed by the subordinate base station; the primary system idle spectrum resources refer to the spectrum resources used by the unlicensed system.
- the central control node may interact with other central control nodes to use the primary system idle spectrum resource usage information to avoid interference; the central control node may also perform power control on the subordinate base stations according to the interference coordination information provided by the subordinate base stations to implement inter-cell communication. Interference coordination.
- the central control node stores spectrum usage information of the subordinate base station.
- the corresponding inter-cell downlink interference model of the invention is shown in FIG. 3.
- the information received by the user 2 by the base station 2 is interfered by the signal sent by the base station 1 to the user 1 at the same frequency in the adjacent cell, and for the user 1, It is also subject to co-channel interference from base station 2.
- the useful signal and the interference signal received by the user are equal, and the interference will be very serious, and the communication quality of the user will also drop drastically.
- FIG. 4 shows a schematic diagram of reference point selection in the invention
- FIG. 4 shows a reference point (black point in the figure) of the same-frequency base station 2, 3 of the base station 1 when the base station 1 is the working base station, the base station 2
- the reference point in the working base station 1 is the most interfered point in the coverage area of the working base station 1.
- the reference point of the base station 3 in the working base station 1 is that the base station 3 has the strongest interference in the coverage area of the working base station 1. point.
- the reference point in the base station 1 is a collective term for the reference point in the base station 1 and the reference point of the base station 3 in the base station 1.
- the reference point of the base station 1, 3 in the working base station 2 and the reference point of the base station 1, 2 in the working base station 3 can be determined.
- the central control node After receiving the co-frequency interference coordination request of the subordinate base station 1, the central control node requests the same-frequency base station and the adjacent-frequency base station of the base station 1 to report the interference coordination parameter information; the central control node uses the reported interference coordination parameter information to its subordinate base station 1 and its subordinate base station 1
- the same frequency base station performs interference coordination.
- Step 501 The base station 1 performs interference measurement together with the subordinate terminal, and determines, according to the measurement result, whether to send the co-channel interference coordination request to the central control node;
- the interference measurement here is mainly that the base station and the terminal measure the strength of the same-frequency interference; the trigger condition of the interference measurement may be that the communication quality of the terminal cannot meet the requirement, or a new neighbor base station is started;
- the measurement result includes: a center frequency point and a bandwidth of the interfered spectrum, and the strength of the same frequency interference; the base station determines whether to send the same frequency interference coordination request to the central control node, for example, for the same interfered spectrum,
- the percentage of the terminal that is stronger than the preset interference strength threshold than the terminal that reports the measurement result exceeds a certain preset value, such as 90%. Or the number of terminals that are stronger than the interference strength threshold by the same frequency interference exceeds a certain preset value, for example, 20.
- Step 502 The base station 1 sends a co-channel interference coordination request to the CCP;
- the co-channel interference coordination request includes a center frequency and a bandwidth of the interfered spectrum.
- Step 503 After receiving the request of the base station 1, the CCP determines the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the subordinate base station;
- the CCP determines an intra-frequency base station of the interfered base station and an adjacent-frequency base station of the interfered base station according to a center frequency point and a bandwidth in the co-channel interference coordination request.
- the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the CCP's subordinate base station may be base stations adjacent to the base station 1 of the CCP.
- the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the subordinate base station of the CCP are also It may be a base station adjacent to the base station 1 of the CCP and a base station not adjacent to the base station 1 by the CCP.
- the same-frequency base station of the base station 1 refers to a base station whose used spectrum is the same as or overlaps with the interference frequency of the terminal of the base station 1;
- the adjacent-frequency base station of the base station 1 refers to a spectrum that is adjacent to the interfered frequency of the terminal of the base station 1 Base station.
- Steps 504a-504b The CCP sends a co-frequency interference coordination parameter information request to the base station 1, and the base station 1 feeds back the CCP co-channel interference coordination parameter information;
- the message carried by the co-frequency interference coordination parameter information request includes the same-frequency base station identifier of the subordinate base station of the CCP and its coverage;
- the co-channel interference coordination parameter information includes a service user priority, a number of users corresponding to each priority, and/or a load status of the base station, a reference point position in the base station, and a minimum value of the maximum interference level acceptable at each point in the coverage area of the base station, The path loss between the same-frequency base station of the base station and the reference point, the antenna pattern of the base station, and the upper limit value of the current transmit power of the base station;
- the base station 1 after receiving the request of the same-frequency interference coordination parameter information of the CCP, acquires the data of the relevant parameter according to the same-frequency interference coordination parameter configuration, and sends the data to the CCP;
- the method for obtaining the data of each parameter is as follows:
- the priority of the service user can be selected at the time of user opening, or determined according to the user's consumption behavior and/or the user's QoS requirements;
- the load status refers to a load level determined by the base station according to current radio resource status (Radio Resource Status) and/or integrated cell available capacity (Available Capacity) information;
- the reference point in the base station is the point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station, and the position of the reference point can be determined by means of road test, simulation, system warm-up, and the like;
- the CCP sends the same-frequency interference coordination parameter information request to the same-frequency base station of the base station 1, and the same-frequency base station feedback of the base station 1 CCP co-channel interference coordination parameter information;
- Steps 504a-504b the co-channel interference coordination parameter information request and the content synchronization of the co-channel interference coordination parameter information are synchronized. Steps 504a-504b.
- Steps 506a-506b The CCP sends a neighboring frequency interference coordination parameter information request to the neighboring frequency base station of the base station 1, and the adjacent frequency base station of the base station 1 feeds back the CCP adjacent frequency interference coordination parameter information;
- the information carried by the adjacent-frequency interference coordination parameter information request includes a central frequency point and a bandwidth of the interfered spectrum, and a reference point in each of the same-frequency base stations;
- the adjacent frequency interference coordination parameter information includes path loss between the adjacent frequency base station of the base station 1 and all reference points in the base station 1 and its co-frequency base station, the antenna pattern of the base station, and adjacent channel interference suppression (ACIR).
- ACIR adjacent channel interference suppression
- the reference point in a base station refers to the point at which the base station's co-frequency base station has the strongest interference in the base station.
- the reference point of BS1 in BS2 is i 21
- the reference point of BS2 in BS1 is i 12
- "all reference points in the same-frequency base station” refers to BS1 i 21 in i 12 and BS 2
- the neighboring base station of the base station 1 receives the CCP's adjacent-frequency interference coordination parameter information request, and according to the adjacent-frequency interference coordination parameter configuration, acquires the data of the relevant parameter and sends it to the CCP;
- the method for obtaining the data of each parameter is as follows:
- the path loss between the adjacent base station of the base station 1 and all reference points of the base station 1 and its same-frequency base station can be determined by means of road test, simulation, system warm-up, and the like;
- the adjacent channel interference suppression can be calculated from the indicators of the transmitter and receiver according to the center frequency and bandwidth of the interfered spectrum, or can be determined by road test, simulation, system warm-up, etc.
- Step 507 CCP pair Base station 1 and its co-frequency base station perform interference coordination;
- the method for performing interference coordination by the CCP is: first, assigning weights to the base station 1 and its co-frequency base station power according to the priority of the service user in the co-channel interference coordination parameter, the number of users corresponding to each priority, and/or the load status of the base station; The adjacent channel interference coordination parameter, other co-channel interference coordination parameters, the weight of the base station 1 and its co-frequency base station, and the upper limit value of the current transmit power when the base station 1 and its co-frequency base station use the same-stage interfered spectrum To ensure that the downlink interference generated by the base station 1 and its co-frequency base station is acceptable, calculate the maximum transmit power of the base station 1 and its co-frequency base station; finally, the CCP informs the base station 1 and its co-frequency base station to adjust the working transmit power to less than or equal to Maximum transmit power.
- the interference strength is calculated based on the interference coordination parameters. Generally, the performance requirements of different terminals are not much different, and it can be considered that it is independent of the terminal. Acceptable interference levels are measurable Large transmission power will be mentioned.
- FIG. 6 is a flowchart of determining base station weights and implementing power control according to the priority of the service users of the base station and the number of users corresponding to each priority;
- Step 601 The base station 1 performs interference measurement together with the subordinate terminal, and determines, according to the measurement result, whether to send the co-channel interference coordination request to the central control node;
- the interference measurement here is mainly that the base station and the terminal measure the strength of the same-frequency interference; the trigger condition of the interference measurement may be that the communication quality of the terminal cannot meet the requirement, or a new neighbor base station is started;
- the measurement result includes: a center frequency of the interfered spectrum, a bandwidth, and an intensity of the same-frequency interference;
- Step 603 After receiving the request of the base station 1, the CCP determines the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the subordinate base station;
- the same-frequency base station of the base station 1 refers to a base station that uses the same or overlapping interference frequency as the subordinate terminal of the base station 1.
- the same-frequency base station of the base station 1 is the base station 2, 3;
- the adjacent-frequency base station of the base station 1 refers to a base station that uses a spectrum adjacent to the interfered spectrum of the terminal of the base station 1.
- Step 604 The base station 1, 2, and 3 provide the same-frequency interference coordination parameter information to the CCP according to the request of the CCP, including the priority of the service user, the number of users corresponding to each priority, the reference point position in the base station, and the points in the coverage area of the base station.
- the minimum value of the maximum interference level, the path loss between the same-frequency base station of the base station and the reference point, the antenna pattern of the base station, and the upper limit of the current transmit power of the base station; the method for obtaining the data of each parameter is as follows:
- the priority of the service user can be selected by the user when the account is opened, or determined according to the user's consumption behavior and/or according to the user's QoS requirements;
- the reference point in the base station is the point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station, and the position of the reference point can be determined by means of road test, simulation, system warm-up, and the like;
- the adjacent-frequency base station of the base station 1 provides the adjacent-frequency interference coordination parameter information to the CCP according to the request of the CCP, including the path loss between the adjacent-frequency base station of the base station 1 and all the reference points in the base stations 1, 2, and 3, and the base station Antenna pattern, adjacent channel interference suppression (ACIR).
- ACIR adjacent channel interference suppression
- the path loss between the adjacent base station of the base station 1 and all reference points in the base stations 1, 2, 3 can be determined by road test, simulation, system warm-up, etc.
- the adjacent channel interference suppression can be calculated from the indicators of the transmitter and receiver according to the center frequency and bandwidth of the interfered spectrum, or can be determined by road test, simulation, system warm-up, etc.
- Step 606 CCP pair The base stations 1, 2, and 3 perform interference coordination.
- the CCP performs interference coordination by: first assigning power weights to the base stations 1, 2, and 3 according to the priority of the service users in the co-channel interference coordination parameters and the number of users corresponding to each priority; and then, according to the adjacent frequency interference coordination parameters, other Co-channel interference coordination parameters, weights of base stations 1, 2, 3, and maximum transmit power when base stations 1, 2, 3 use the interfered spectrum, while ensuring acceptable downlink interference generated by base stations 1, 2, 3 Calculate the maximum transmit power of the base stations 1, 2, 3; Finally, the CCP informs the base stations 1, 2, 3 to operate according to the maximum transmit power calculated by the CCP.
- the method for determining the power weight is as follows: Assume that the priority of the user is represented by N1, N2, and N3 respectively, and the priority of N1 is the highest, N2 is the second, and N3 is the lowest.
- the number of users corresponding to the priorities of the service users of the base station k can be set to n.
- the weight of base station k can be expressed as k . Among them, 0.6 n kl ,
- 0.6, 0.3, and 0.1 in 0.3n k2 and 0.1n k3 are to reflect the priority levels of n kl , n k2 , and 3. Therefore, n kl , n k2 , and n k3 respectively use coefficients of 0.6, 0.3, and 0.1. Similarly, similar other coefficients can be used to indicate the priority level, for example: 0.7n kl , 0.2n k2 , 0.1n k3 radical
- the base station 1 is the working base station, and the reference points of the base station 2 and the base station 3 in the base station 1 are respectively 12 and i 13 , and the reference in the base station 1 is calculated according to the minimum receiver sensitivity and the receiver interference protection ratio of the user terminal at the reference point 12 .
- the maximum interference level hcceptable(in, fj ) that can be accepted when the user terminal at point 12 uses the frequency ⁇ is calculated as: Where x- ⁇ ⁇ , / represents the minimum receiver sensitivity of the user terminal at the reference point, and PR represents the receiver 4 protection ratio.
- FIG. 7 is a flowchart of determining a base station weight according to a load condition of a base station, and implementing power control, specifically including:
- Step 701 The base station 1 performs interference measurement together with the subordinate terminal, and determines, according to the measurement result, whether to send the co-channel interference coordination request to the central control node;
- the interference measurement here is mainly that the base station and the terminal measure the strength of the same-frequency interference; the trigger condition of the interference measurement may be that the communication quality of the terminal cannot meet the requirement, or a new neighbor base station is started;
- the measurement result includes: a center frequency of the interfered spectrum, a bandwidth, and an intensity of the same-frequency interference;
- Step 703 After receiving the request of the base station 1, the CCP determines the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the subordinate base station;
- the same-frequency base station of the base station 1 refers to a base station that uses the same or overlapping interference frequency as the subordinate terminal of the base station 1.
- the same-frequency base station of the base station 1 is the base station 2, 3;
- the adjacent-frequency base station of the base station 1 refers to a base station that uses a spectrum adjacent to the interfered spectrum of the terminal of the base station 1.
- Step 704 The base station 1, 2, and 3 provide the CCP with the same-frequency interference coordination parameter information according to the request of the CCP, including the load status of the base station, the reference point position in the base station, and the minimum value of the maximum interference level acceptable at each point in the coverage area of the base station. a path loss between the same-frequency base station of the base station and the reference point, an antenna pattern of the base station, and an upper limit value of the current transmit power of the base station;
- the method for obtaining the data of each parameter is as follows:
- the load status refers to the base station according to the current radio resource status (Radio Resource Status) and / Or a load level determined by the integrated available capacity information;
- the reference point in the base station is the point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station, and the position of the reference point can be determined by means of road test, simulation, system warm-up, and the like;
- Step 705 The adjacent-frequency base station of the base station 1 provides the adjacent-frequency interference coordination parameter information to the CCP according to the request of the CCP, including the path loss between the adjacent-frequency base station of the base station 1 and all reference points of the base stations 1, 2, and 3, the adjacent frequency.
- Antenna pattern of the base station adjacent channel interference suppression (ACIR).
- ACIR adjacent channel interference suppression
- the method for obtaining the data of each parameter is as follows:
- the path loss between the adjacent base station of the base station 1 and all reference points of the base stations 1, 2, 3 can be determined by means of road test, simulation, system warm-up, etc.;
- the adjacent channel interference suppression can be calculated from the indicators of the transmitter and receiver according to the center frequency and bandwidth of the interfered spectrum, or can be determined by road test, simulation, system warm-up, etc.
- Step 706 CCP pair Base station 1, 2, 3 perform interference coordination;
- the method for performing interference coordination by the CCP is: first, assigning power weights to the base stations 1, 2, and 3 according to the load status of the base station in the co-channel interference coordination parameter; and then, according to the adjacent frequency interference coordination parameters, other co-channel interference coordination parameters, the base station 1
- the weights of 2, 3 and the maximum transmit power when the base station 1, 2, 3 uses the interfered spectrum and calculate the base stations 1, 2, 3 in case the downlink interference generated by the base stations 1, 2, 3 is acceptable.
- the maximum transmit power; the final CCP informs the base station 1, 2, 3 to operate according to the maximum transmit power calculated by the CCP.
- the method for determining the weight of each base station is as follows:
- the load status of the base station is divided into levels, for example, four levels including overload, high, medium, and low, and can be used by L1, L2, L3, and L4.
- the representation may also be represented by an integer between 0 and 100. The higher the level or the larger the value, the higher the expected transmission power of the base station.
- the value range of l k depends on the load status of the base station Representation.
- FIG. 8 is a flowchart of determining a weight according to a priority of a service user of a base station, a number of users corresponding to each priority, and a load status of the base station, and implementing power control, specifically including:
- Step 801 The base station 1 performs interference measurement together with the subordinate terminal, and determines, according to the measurement result, whether to send the co-channel interference coordination request to the central control node;
- the interference measurement here is mainly that the base station and the terminal measure the strength of the same-frequency interference; the trigger condition of the interference measurement may be that the communication quality of the terminal cannot meet the requirement, or a new neighbor base station is started;
- the measurement result includes: a center frequency of the interfered spectrum, a bandwidth, and an intensity of the same-frequency interference;
- Step 803 After receiving the request of the base station 1, the CCP determines the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the subordinate base station;
- the same-frequency base station of the base station 1 refers to a base station that uses the same or overlapping interference frequency as the subordinate terminal of the base station 1.
- the same-frequency base station of the base station 1 is the base station 2, 3;
- the adjacent-frequency base station of the base station 1 refers to a base station that uses a spectrum adjacent to the interfered spectrum of the terminal of the base station 1.
- Step 804 The base station 1, 2, and 3 provide the CCP with the same-frequency interference coordination parameter information according to the request of the CCP, including the priority of the service user, the number of users corresponding to each priority, and the load status of the base station, the reference point position in the base station, and the base station. a minimum value of the maximum interference level acceptable at each point in the coverage area, a path loss between the same-frequency base station of the base station and the reference point, an antenna pattern of the base station, and an upper limit value of the current transmit power of the base station;
- the method for obtaining the data of each parameter is as follows:
- the priority of the service user can be selected at the time of user account opening, or determined according to the user's consumption behavior and/or determined according to the user's QoS requirements;
- the load status refers to a load level determined by the base station according to current radio resource status (Radio Resource Status) and/or integrated cell available capacity (Available Capacity) information;
- the reference point in the base station is the point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station, and the position of the reference point can be determined by means of road test, simulation, system warm-up, and the like; The minimum value of the maximum interference level that can be accepted at each point in the coverage area of the base station, and the same-frequency base station of the base station
- Step 805 The neighboring base station of the base station 1 provides the adjacent channel interference coordination parameter information to the CCP according to the request of the CCP, including the path loss between the adjacent base station of the base station 1 and all reference points of the base stations 1, 2, and 3, the adjacent frequency.
- Antenna pattern of the base station adjacent channel interference suppression (ACIR).
- the method for obtaining the data of each parameter is as follows:
- the path loss between the adjacent base station of the base station 1 and all reference points of the base stations 1, 2, 3 can be determined by means of road test, simulation, system warm-up, etc.;
- the adjacent channel interference suppression can be calculated from the indicators of the transmitter and receiver according to the center frequency and bandwidth of the interfered spectrum, or can be determined by road test, simulation, system warm-up, etc.
- Step 806 CCP pair Base station 1, 2, 3 perform interference coordination;
- the CCP performs interference coordination by: first assigning power weights to the base stations 1, 2, and 3 according to the priority of the service users in the co-channel interference coordination parameters, the number of users corresponding to each priority, and the load status of the base station; Coordinating parameters, power weights of base stations 1, 2, 3, and maximum transmit power when base stations 1, 2, 3 use the interfered spectrum, and calculating if downlink interference generated by base stations 1, 2, 3 is acceptable The maximum transmit power of the base stations 1, 2, 3; The last CCP informs the base stations 1, 2, 3 to operate according to the maximum transmit power calculated by the CCP.
- the weight determination method of each base station is as follows: It is assumed that the priorities of the users are represented by N1, N2, and N3, respectively, the N1 priority is the highest, the N2 is the second, and the N3 is the lowest, and the base station; t the subordinate service users have corresponding priorities.
- the load status of the base station is divided into levels, including four levels of overload, high, medium, and low, which can be represented by L 2 , L 3 , and L 4 , or by an integer between 0 and 100. A higher or higher value indicates that the base station expects a higher transmission power.
- the coefficients are 0.6, 0.3 and 0.1. Similarly, similar other coefficients can be used to indicate the priority level, for example: 0.7n fcl , 0.2n fc2 , 0.1n fc3 .
- the weight calculated according to the number of users corresponding to each priority of the service users of each base station is multiplied by a coefficient of 0.3, and the weight calculated according to the load status of the base station is multiplied by a coefficient of 0.7, indicating that the total weight is calculated.
- the load status of the base station is more important, and the percentage of the base station is 70%.
- the present invention also provides a co-channel interference coordination device, and particularly relevant to the present invention, as shown in FIG. 9, the device includes:
- the interference coordination request receiving unit is configured to receive the co-channel interference coordination request sent by the interfered base station
- the interference coordination parameter information acquiring unit is configured to acquire interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station,
- the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered spectrum, and the spectrum used by the adjacent-frequency base station of the interfered base station is adjacent to the interfered frequency.
- an interference coordination unit configured to perform interference coordination on the interfered base station and the same-frequency base station according to the interference coordination parameter.
- the interference coordination parameter information acquiring unit includes:
- a neighboring frequency base station determining module configured to determine, according to the co-frequency interference coordination request, an intra-frequency base station of the interfered base station and an adjacent-frequency base station of the interfered base station;
- An information sending module configured to send an interference coordination parameter information request to the interfered base station, the same-frequency base station of the interfered base station, and an adjacent-frequency base station of the interfered base station;
- an information receiving module configured to receive interference coordination parameter information fed back by the interfered base station, the same-frequency base station of the interfered base station, and an adjacent-frequency base station of the interfered base station.
- the co-frequency interference coordination request carries the interfered spectrum of the interfered base station a heart rate point and a bandwidth
- the interference coordination parameter information obtaining unit determining, according to the center frequency point and bandwidth in the co-channel interference coordination request, an adjacent frequency base station of the interfered base station and an adjacent frequency of the interfered base station Base station.
- the triggering event that the interfered base station sends the co-frequency interference coordination request is for the same interfered spectrum, and the terminal that is subjected to the same-frequency interference strength greater than the preset interference strength threshold is compared to the terminal that reports the measurement result.
- the percentage exceeds a certain preset value, or the number of terminals whose intensity of the same frequency interference is greater than the interference intensity threshold exceeds a certain preset value.
- the interference coordination parameter information of the interfered base station and its co-frequency base station includes information of a current base station for determining a power allocation weight of an intra-frequency base station, a position of a reference point in a current base station, and points in a current base station coverage area.
- the interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent base station and a reference point in the same-frequency base station, an antenna pattern of the adjacent-frequency base station, and adjacent-channel interference suppression ( ACIR ) ;
- the reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station.
- the information used by the current base station to determine the weight allocation of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
- the interference coordination unit comprises:
- a power weight allocation module configured to allocate power weights to the interfered base station and its co-frequency base station according to the information used to determine the power allocation weight of the same-frequency base station;
- a maximum transmit power calculation module configured to calculate, according to the power weight assignment result, other interference coordination parameter information, and the current transmit power upper limit value of the interfered base station and the same-frequency base station, that the downlink interference is acceptable, the interfered base station and The maximum transmit power of its co-frequency base station;
- a power adjustment notification module configured to notify the interfered base station and its co-frequency base station to adjust transmit power to be less than or equal to the maximum transmit power.
- the co-channel interference coordination device of the present invention can also be implemented in the following manner, the device comprising: a memory for storing instructions;
- processor coupled to the memory, the processor being configured to execute an instruction stored in the memory, wherein the processor is configured to: receive a co-channel interference coordination request sent by the interfered base station;
- interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station where the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered frequency, the interfered base station
- the spectrum used by the adjacent frequency base station is adjacent to the interfered spectrum
- the interference coordination parameter information of the interfered base station and its co-frequency base station includes information of the current base station for determining the power allocation weight of the same-frequency base station, the location of the reference point in the current base station, and the current base station coverage area.
- the interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent base station and a reference point in the same-frequency base station, an antenna pattern of the adjacent-frequency base station, and adjacent-channel interference suppression ( ACIR ) ;
- the reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station;
- the information used by the current base station to determine the allocation weight of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
- the base station provides the central control node with information for determining the power allocation weight of the same frequency base station, interference coordination parameter information, and interference coordination with the same frequency base station.
- the benefits are as follows: The quality of service of high-priority users can be guaranteed, and the downlink interference generated when different base stations use the same spectrum is controlled at a reasonable level to achieve co-channel interference coordination between cells.
- the method and apparatus of the embodiments of the present invention can adjust the power of the same-frequency base station based on the acquired information, thereby reducing co-channel interference between cells.
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Abstract
A method and a device for co-channel interference coordination. The method comprises: receiving a co-channel interference coordination request sent by an interfered base station; acquiring interference coordination parameter information of the interfered base station and of a co-channel base station and of an adjacent-channel base station thereof, wherein the frequency spectrum used by said co-channel base station is the same as or overlaps the interfered frequency spectrum, and the frequency spectrum used by said adjacent-channel base station is adjacent to the interfered frequency spectrum; and performing interference coordination for the interfered base station and the co-channel base station according to the interference coordination parameters. The method and device can adjust power of a co-channel base station based on acquired information, thereby reducing co-channel interference between cells.
Description
一种同频干扰协调方法和装置 Co-channel interference coordination method and device
技术领域 Technical field
本发明涉及无线通信领域, 尤其涉及一种同频干扰协调方法和装置。 背景技术 The present invention relates to the field of wireless communications, and in particular, to a co-channel interference coordination method and apparatus. Background technique
在无线通信系统中, 无线频谱资源是一种必不可少的、 并且极其有限的 资源, 频谱的固定分配和动态使用导致大量频谱不能得到充分利用, 在保证 不干扰授权用户的前提下, 釆用认知无线电技术可以提高频谱的利用率, 高 效、 灵活地使用在一定时间和空间区域内未被主系统(授权系统)使用的频 谱, 具有认知功能的无线通信设备可以按照某种 "伺机" 的方式使用其它系 统授权频段, 当然这一定要建立在授权频段处于空闲或授权频段只有很少的 业务正在通信的情况下, 极大地提高了频谱资源利用率, 解决了日益增长的 无线通信业务需求与日渐匮乏的频谱资源之间的矛盾。 目前感知无线电技术 的研究中, 次级系统(感知无线电系统)可以通过对授权业务数据库的访问 来获取主系统可用频谱资源信息, 次级系统获取频谱资源后分配给基站, 由 于请求到的频谱资源有限, 可能出现多个基站使用同段频谱的情况, 这时就 会产生小区间的同频干扰。 In wireless communication systems, wireless spectrum resources are an indispensable and extremely limited resource. The fixed allocation and dynamic use of the spectrum may result in a large amount of spectrum not being fully utilized, and ensuring that it does not interfere with authorized users. Cognitive radio technology can improve the utilization of spectrum, and efficiently and flexibly use the spectrum that is not used by the main system (authorization system) in a certain time and space area. The cognitive communication wireless communication equipment can follow some kind of "opportunistic". The way to use other system licensed frequency bands, of course, this must be established in the case that the licensed frequency band is idle or the licensed frequency band has only a small number of services being communicated, which greatly improves the utilization of spectrum resources and solves the growing demand for wireless communication services. Contradictions with increasingly scarce spectrum resources. In the current research of cognitive radio technology, the secondary system (perceptual radio system) can obtain the available spectrum resource information of the primary system through access to the authorized service database, and the secondary system acquires the spectrum resource and allocates it to the base station, due to the requested spectrum resource. Limited, there may be cases where multiple base stations use the same spectrum, and co-channel interference between cells will occur.
现在陆地移动通信蜂窝系统均釆用频率复用方式, 这在一定程度上增加 了系统的容量, 提高了频谱利用率, 但同时也增加了系统的干扰程度, 且同 频复用系数的越大, 干扰越严重, 直接影响到用户的通话质量, 甚至会产生 掉话或无法建立正常的呼叫。 Nowadays, land mobile communication cellular systems use frequency reuse, which increases the capacity of the system to a certain extent and improves the spectrum utilization, but also increases the degree of interference of the system, and the larger the same frequency reuse coefficient. The more serious the interference, the direct impact on the quality of the user's call, and even the call drop or the inability to establish a normal call.
目前 LTE系统对于同频干扰的抑制方案主要有干扰随机化、 干扰消除, 干扰随机化方法主要包括小区特定加扰和小区特定交织, 该方法简单可行, 但性能不太好; 干扰消除可以显著改善小区边缘的系统特性, 获得较高的频 谱效率, 但对于带宽较小的业务则不太适用, 接收机的复杂度以及小区间的 同步也有要求; At present, the LTE system mainly suppresses randomization and interference cancellation for the same-frequency interference. The interference randomization method mainly includes cell-specific scrambling and cell-specific interleaving. The method is simple and feasible, but the performance is not good; the interference cancellation can be significantly improved. The system characteristics at the edge of the cell obtain higher spectral efficiency, but are not suitable for services with smaller bandwidth, and the complexity of the receiver and the synchronization between cells are also required;
因此如何有效地减少小区间的同频干扰, 是无线通信领域必须要考虑的 问题。
发明内容 Therefore, how to effectively reduce the co-channel interference between cells is a problem that must be considered in the field of wireless communications. Summary of the invention
本发明要解决的技术问题是提供一种同频干扰协调方法和装置, 以解决 小区间同频干扰较大的问题。 The technical problem to be solved by the present invention is to provide a co-channel interference coordination method and device to solve the problem of large inter-frequency interference in a small interval.
为解决以上技术问题, 本发明提供了一种同频干扰协调方法, 该方法包 括: To solve the above technical problem, the present invention provides a co-channel interference coordination method, which includes:
接收受干扰基站发送的同频干扰协调请求; Receiving a co-channel interference coordination request sent by the interfered base station;
获取所述受干扰基站及其同频基站、 邻频基站的干扰协调参数信息, 其 中所述受干扰基站的同频基站使用的频谱与受干扰的频语相同或交叠, 所述 受干扰基站的邻频基站使用的频谱与所述受干扰的频谱相邻; Obtaining interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station, where the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered frequency, the interfered base station The spectrum used by the adjacent frequency base station is adjacent to the interfered spectrum;
根据所述干扰协调参数对所述受干扰基站及其同频基站进行干扰协调。 优选地, 获取所述受干扰基站及其同频基站、 邻频基站的干扰协调参数 信息的步骤包括: Performing interference coordination on the interfered base station and its co-frequency base station according to the interference coordination parameter. Preferably, the step of acquiring the interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station includes:
根据所述同频干扰协调请求确定所述受干扰基站的同频基站以及所述受 干扰基站的邻频基站; Determining, by the co-channel interference coordination request, an intra-frequency base station of the interfered base station and an adjacent-frequency base station of the interfered base station;
向所述受干扰基站、 所述受干扰基站的同频基站及所述受干扰基站的邻 频基站发送干扰协调参数信息请求; And transmitting an interference coordination parameter information request to the interfered base station, the same-frequency base station of the interfered base station, and an adjacent-frequency base station of the interfered base station;
所述受干扰基站、 所述受干扰基站的同频基站及所述受干扰基站的邻频 基站反馈干扰协调参数信息。 The interfered base station, the same-frequency base station of the interfered base station, and the adjacent-frequency base station of the interfered base station feed back interference coordination parameter information.
优选地, 所述同频干扰协调请求中携带所述受干扰基站受干扰频谱的中 心频点及带宽, 根据所述同频干扰协调请求中的所述中心频点及带宽确定所 述受干扰基站的同频基站以及所述受干扰基站的邻频基站。 Preferably, the co-frequency interference coordination request carries a central frequency point and a bandwidth of the interfered spectrum of the interfered base station, and determines the interfered base station according to the central frequency point and bandwidth in the co-channel interference coordination request. The same frequency base station and the adjacent frequency base station of the interfered base station.
优选地, 所述受干扰基站发送所述同频干扰协调请求的触发事件是针对 同一受干扰频谱, 受同频干扰的强度大于预设干扰强度阔值的终端相对于上 报测量结果的终端的百分比超过某个预设值, 或者受同频干扰的强度大于干 扰强度阈值的终端的数量超过某个预设值。 Preferably, the triggering event that the interfered base station sends the co-channel interference coordination request is for the same interfered spectrum, and the percentage of the terminal that is subjected to the same-frequency interference greater than the preset interference-intensity threshold is compared with the terminal that reports the measurement result. The number of terminals that exceed a certain preset value or whose strength of the same-frequency interference is greater than the interference strength threshold exceeds a certain preset value.
优选地, 所述受干扰基站及其同频基站的干扰协调参数信息包括当前基 站的用于确定同频基站功率分配权重的信息、 当前基站中的参考点的位置,
当前基站覆盖区域内各点可接受最大干扰水平的最小值、 当前基站的同频基 站与所述参考点之间的路损、 当前基站的天线方向图以及当前基站的当前发 射功率的上限值; 所述受干扰基站的邻频基站的干扰协调参数信息包括该邻频基站与所述 各同频基站中的参考点之间的路损、 该邻频基站的天线方向图、 邻频干扰抑 制 (ACIR ) ; Preferably, the interference coordination parameter information of the interfered base station and its co-frequency base station includes information of a current base station for determining a power allocation weight of an intra-frequency base station, and a position of a reference point in the current base station, The minimum value of the maximum interference level that can be accepted at each point in the current coverage area of the base station, the path loss between the intra-frequency base station of the current base station and the reference point, the antenna pattern of the current base station, and the upper limit value of the current base station's current transmit power. The interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent frequency base station and a reference point in the same frequency base station, an antenna pattern of the adjacent frequency base station, and adjacent frequency interference suppression. (ACIR);
所述基站中的参考点指该基站的同频基站在该基站覆盖区域内干扰最强 的点。 The reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station.
优选地, 所述当前基站用于确定同频基站功率分配权重的信息包括当前 基站服务用户的优先级、 各优先级对应的用户数量和 /或基站的负载状况。 Preferably, the information used by the current base station to determine the power allocation weight of the same frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
优选地, 根据所述干扰协调参数对所述受干扰基站及其同频基站进行干 扰协调的步骤包括: Preferably, the step of performing interference coordination on the interfered base station and its co-frequency base station according to the interference coordination parameter comprises:
根据所述用于确定同频基站功率分配权重的信息为所述受干扰基站及其 同频基站分配功率权重; And allocating power weights to the interfered base station and the same-frequency base station according to the information used to determine the power allocation weight of the same-frequency base station;
根据功率权重分配结果、 其他干扰协调参数信息及受干扰基站及其同频 基站的当前发射功率上限值计算下行干扰可接受的情况下, 所述受干扰基站 及其同频基站的最大发射功率; The maximum transmit power of the interfered base station and its co-frequency base station when the downlink interference is acceptable according to the power weight assignment result, the other interference coordination parameter information, and the current transmit power upper limit value of the interfered base station and the same-frequency base station ;
通知所述受干扰基站与其同频基站将发射功率调整至小于或等于所述最 大发射功率。 The victim base station and its co-frequency base station are notified to adjust the transmit power to be less than or equal to the maximum transmit power.
为解决以上技术问题, 本发明还提供了一种同频干扰协调装置, 该装置 包括: To solve the above technical problem, the present invention also provides a co-channel interference coordination device, the device comprising:
干扰协调请求接收单元, 其设置为: 接收受干扰基站发送的同频干扰协 调请求; 干扰协调参数信息获取单元, 其设置为: 获取所述受干扰基站及其同频 基站、 邻频基站的干扰协调参数信息, 其中所述受干扰基站的同频基站使用 的频谱与受干扰的频谱相同或交叠, 所述受干扰基站的邻频基站使用的频谱 与所述受干扰的频语相邻; The interference coordination request receiving unit is configured to: receive the co-channel interference coordination request sent by the interfered base station; and the interference coordination parameter information acquiring unit is configured to: acquire interference of the interfered base station, the same-frequency base station, and the adjacent-frequency base station Coordinating the parameter information, wherein the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered spectrum, and the spectrum used by the adjacent-frequency base station of the interfered base station is adjacent to the interfered frequency;
干扰协调单元, 其设置为: 根据所述干扰协调参数对所述受干扰基站及
同频基站进行干扰协调。 An interference coordination unit, configured to: the interfered base station according to the interference coordination parameter and The same frequency base station performs interference coordination.
优选地, 干扰协调参数信息获取单元包括: Preferably, the interference coordination parameter information acquiring unit includes:
同邻频基站确定模块, 设置为: 根据所述同频干扰协调请求确定所述受 干扰基站的同频基站以及所述受干扰基站的邻频基站; And a neighboring frequency base station determining module, configured to: determine, according to the co-frequency interference coordination request, an intra-frequency base station of the interfered base station and an adjacent-frequency base station of the interfered base station;
信息发送模块, 设置为: 向所述受干扰基站、 所述受干扰基站的同频基 站及所述受干扰基站的邻频基站发送干扰协调参数信息请求; The information sending module is configured to: send an interference coordination parameter information request to the interfered base station, the same-frequency base station of the interfered base station, and an adjacent-frequency base station of the interfered base station;
信息接收模块, 设置为: 接收所述受干扰基站、 所述受干扰基站的同频 基站及所述受干扰基站的邻频基站反馈的干扰协调参数信息。 The information receiving module is configured to: receive the interference coordination parameter information fed back by the interfered base station, the same-frequency base station of the interfered base station, and the adjacent-frequency base station of the interfered base station.
优选地, 所述受干扰基站及其同频基站的干扰协调参数信息包括当前基 站的用于确定同频基站功率分配权重的信息、 当前基站中的参考点的位置, 当前基站覆盖区域内各点可接受最大干扰水平的最小值、 当前基站的同频基 站与所述参考点之间的路损、 当前基站的天线方向图以及当前基站的当前发 射功率的上限值; Preferably, the interference coordination parameter information of the interfered base station and its co-frequency base station includes information of a current base station for determining a power allocation weight of an intra-frequency base station, a position of a reference point in a current base station, and points in a current base station coverage area. The minimum value of the maximum interference level acceptable, the path loss between the intra-frequency base station of the current base station and the reference point, the antenna pattern of the current base station, and the upper limit value of the current base station's current transmit power;
所述受干扰基站的邻频基站的干扰协调参数信息包括该邻频基站与所述 各同频基站中的参考点之间的路损、 该邻频基站的天线方向图、 邻频干扰抑 制 (ACIR ) ; The interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent base station and a reference point in the same-frequency base station, an antenna pattern of the adjacent-frequency base station, and adjacent-channel interference suppression ( ACIR ) ;
所述基站中的参考点指该基站的同频基站在该基站覆盖区域内干扰最强 的点; The reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station;
所述当前基站用于确定同频基站分配权重的信息包括当前基站服务用户 的优先级、 各优先级对应的用户数量和 /或基站的负载状况。 The information used by the current base station to determine the allocation weight of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
优选地, 所述干扰协调单元包括: Preferably, the interference coordination unit comprises:
功率权重分配模块, 设置为: 根据所述用于确定同频基站功率分配权重 的信息为所述受干扰基站及其同频基站分配功率权重; The power weight allocation module is configured to: allocate power weights to the interfered base station and its same-frequency base station according to the information used to determine the power allocation weight of the same-frequency base station;
最大发射功率计算模块, 设置为: 根据功率权重分配结果、 其他干扰协 调参数信息及受干扰基站及其同频基站的当前发射功率上限值计算下行干扰 可接受的情况下, 所述受干扰基站及其同频基站的最大发射功率; The maximum transmit power calculation module is configured to: set, according to the power weight assignment result, other interference coordination parameter information, and the current transmit power upper limit value of the interfered base station and the same-frequency base station, that the downlink interference is acceptable, the interfered base station And the maximum transmit power of the same frequency base station;
功率调整通知模块, 设置为: 通知所述受干扰基站与其同频基站将发射 功率调整至小于或等于所述最大发射功率。
为解决以上技术问题, 本发明还提供了一种同频干扰协调装置, 该装置 包括: The power adjustment notification module is configured to: notify the interfered base station and its co-frequency base station to adjust the transmit power to be less than or equal to the maximum transmit power. To solve the above technical problem, the present invention also provides a co-channel interference coordination device, the device comprising:
存储器, 设置为: 存储指令; Memory, set to: store instructions;
处理器, 设置为: 与所述存储器耦合, 该处理器被配置为执行存储在所 述存储器中的指令, 其中, 所述处理器被配置为: a processor, configured to: coupled to the memory, the processor configured to execute instructions stored in the memory, wherein the processor is configured to:
接收受干扰基站发送的同频干扰协调请求; Receiving a co-channel interference coordination request sent by the interfered base station;
获取所述受干扰基站及其同频基站、 邻频基站的干扰协调参数信息, 其 中所述受干扰基站的同频基站使用的频谱与受干扰的频语相同或交叠, 所述 受干扰基站的邻频基站使用的频谱与所述受干扰的频谱相邻; Obtaining interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station, where the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered frequency, the interfered base station The spectrum used by the adjacent frequency base station is adjacent to the interfered spectrum;
根据所述干扰协调参数对所述受干扰基站及其同频基站进行干扰协调。 优选地, 所述受干扰基站及其同频基站的干扰协调参数信息包括当前基 站的用于确定同频基站功率分配权重的信息、 当前基站中的参考点的位置, 当前基站覆盖区域内各点可接受最大干扰水平的最小值、 当前基站的同频基 站与所述参考点之间的路损、 当前基站的天线方向图以及当前基站的当前发 射功率的上限值; Performing interference coordination on the interfered base station and its co-frequency base station according to the interference coordination parameter. Preferably, the interference coordination parameter information of the interfered base station and its co-frequency base station includes information of a current base station for determining a power allocation weight of an intra-frequency base station, a position of a reference point in a current base station, and points in a current base station coverage area. The minimum value of the maximum interference level acceptable, the path loss between the intra-frequency base station of the current base station and the reference point, the antenna pattern of the current base station, and the upper limit value of the current base station's current transmit power;
所述受干扰基站的邻频基站的干扰协调参数信息包括该邻频基站与所述 各同频基站中的参考点之间的路损、 该邻频基站的天线方向图、 邻频干扰抑 制 (ACIR ) ; The interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent base station and a reference point in the same-frequency base station, an antenna pattern of the adjacent-frequency base station, and adjacent-channel interference suppression ( ACIR ) ;
所述基站中的参考点指该基站的同频基站在该基站覆盖区域内干扰最强 的点; The reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station;
所述当前基站用于确定同频基站分配权重的信息包括当前基站服务用户 的优先级、 各优先级对应的用户数量和 /或基站的负载状况。 The information used by the current base station to determine the allocation weight of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
基于本发明实施例的方法和装置, 可以基于获取的信息对同频基站的功 率进行调整, 从而降低小区间的同频干扰。 Based on the method and apparatus of the embodiments of the present invention, the power of the same-frequency base station can be adjusted based on the acquired information, thereby reducing co-channel interference between cells.
附图概述
图 1为本发明实施例同频干扰协调方法的示意图; BRIEF abstract 1 is a schematic diagram of a co-channel interference coordination method according to an embodiment of the present invention;
图 2为本发明实施例应用场景示意图; 2 is a schematic diagram of an application scenario according to an embodiment of the present invention;
图 3为小区间下行干扰示意图; Figure 3 is a schematic diagram of downlink interference between cells;
图 4为参考点选择示意图; Figure 4 is a schematic diagram of reference point selection;
图 5为同频干扰协调信息方法应用实例 1的信令流程图; FIG. 5 is a signaling flowchart of an application example 1 of the same-frequency interference coordination information method;
图 6为根据基站下属服务用户优先级及各优先级对应的用户数量确定基 站权重, 实现功率控制的流程图; 6 is a flowchart of determining a base station weight according to a priority of a service user of a base station and a number of users corresponding to each priority, and implementing power control;
图 7为根据基站的负载状况确定基站权重, 实现功率控制的流程图; 图 8为根据基站下属服务用户优先级, 各优先级对应的用户数量及基站 的负载状况确定权重, 实现功率控制的流程图; 7 is a flow chart for determining base station weights and implementing power control according to the load status of the base station; FIG. 8 is a flow chart for determining power according to the priority of the service users of the base station, the number of users corresponding to each priority, and the load status of the base station, and implementing power control. Figure
图 9为本发明实施例同频干扰协调装置的模块结构示意图。 本发明的较佳实施方式 FIG. 9 is a schematic structural diagram of a module of a co-channel interference coordination apparatus according to an embodiment of the present invention. Preferred embodiment of the invention
功率控制是无线通信系统的一项关键技术, 它可以提高频谱利用率, 减 少功率损耗。 发射机的功率将会影响链路信号质量和无线系统的干扰环境, 在保持链路通话质量的前提下尽可能地对基站进行有效的功率控制, 可以降 低基站对用户终端造成的下行干扰。 如果系统知道用于功率控制的相关参数 信息, 则可以有效地控制小区间的下行同频干扰。 有鉴于此, 本发明实施例 针对不同基站使用同段频谱时产生的下行干扰问题, 提出了一种同频干扰协 调方法, 如图 1所示, 该方法包括: Power control is a key technology in wireless communication systems that improves spectrum utilization and reduces power consumption. The power of the transmitter will affect the quality of the link signal and the interference environment of the wireless system. The effective power control of the base station can be performed as much as possible while maintaining the quality of the link call, which can reduce the downlink interference caused by the base station to the user terminal. If the system knows the relevant parameter information for power control, it can effectively control the downlink co-channel interference between cells. In view of this, the embodiment of the present invention provides a co-channel interference coordination method for a downlink interference problem generated when different base stations use the same spectrum. As shown in FIG. 1, the method includes:
步骤 101 : 接收受干扰基站发送的同频干扰协调请求; Step 101: Receive a co-channel interference coordination request sent by the interfered base station.
优选地, 在中心控制节点收到下属基站 1的同频干扰协调请求之前, 上 述方法还包括基站 1连同下属终端进行干扰测量, 并根据测量结果判断是否 向中心控制节点发送同频干扰协调请求; Preferably, before the central control node receives the co-frequency interference coordination request of the subordinate base station 1, the method further includes: performing interference measurement by the base station 1 together with the subordinate terminal, and determining, according to the measurement result, whether to send the co-channel interference coordination request to the central control node;
步骤 102: 获取所述受干扰基站及其同频基站、 邻频基站的干扰协调参 数信息, 其中所述受干扰基站的同频基站使用的频谱与受干扰的频谱相同或 交叠, 所述受干扰基站的邻频基站使用的频谱与所述受干扰的频语相邻;
获取所述受干扰基站及其同频基站、 邻频基站的干扰协调参数信息的步 骤包括: Step 102: Obtain interference coordination parameter information of the interfered base station, its co-frequency base station, and an adjacent-frequency base station, where the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered spectrum. The spectrum used by the adjacent base station of the interfering base station is adjacent to the interfered frequency; The obtaining the interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station includes:
根据所述同频干扰协调请求确定所述受干扰基站的同频基站以及所述受 干扰基站的邻频基站; Determining, by the co-channel interference coordination request, an intra-frequency base station of the interfered base station and an adjacent-frequency base station of the interfered base station;
向所述受干扰基站、 所述受干扰基站的同频基站及所述受干扰基站的邻 频基站发送干扰协调参数信息请求; And transmitting an interference coordination parameter information request to the interfered base station, the same-frequency base station of the interfered base station, and an adjacent-frequency base station of the interfered base station;
所述受干扰基站、 所述受干扰基站的同频基站及所述受干扰基站的邻频 基站反馈干扰协调参数信息。 The interfered base station, the same-frequency base station of the interfered base station, and the adjacent-frequency base station of the interfered base station feed back interference coordination parameter information.
具体地, 所述同频干扰协调请求中携带所述受干扰基站受干扰频谱的中 心频点及带宽, 根据所述同频干扰协调请求中的所述中心频点及带宽确定所 述受干扰基站的同频基站以及所述受干扰基站的邻频基站。 Specifically, the co-frequency interference coordination request carries a central frequency point and a bandwidth of the interfered spectrum of the interfered base station, and determines the interfered base station according to the central frequency point and bandwidth in the co-frequency interference coordination request. The same frequency base station and the adjacent frequency base station of the interfered base station.
步骤 103 : 根据所述干扰协调参数对所述受干扰基站及其同频基站进行 干扰协调。 Step 103: Perform interference coordination on the interfered base station and its same-frequency base station according to the interference coordination parameter.
所述同频基站的干扰协调参数信息包括当前基站的用于确定同频基站功 率分配权重的信息, 当前基站中的参考点的位置, 当前基站覆盖区域内各点 可接受最大干扰水平的最小值, 当前基站的同频基站与所述参考点之间的路 损, 当前基站的天线方向图, 当前基站的当前发射功率的上限值; The interference coordination parameter information of the same-frequency base station includes information used by the current base station to determine the power allocation weight of the same-frequency base station, the position of the reference point in the current base station, and the minimum value of the maximum interference level acceptable at each point in the coverage area of the current base station. The path loss between the intra-frequency base station of the current base station and the reference point, the antenna pattern of the current base station, and the upper limit value of the current transmit power of the current base station;
所述邻频基站的干扰协调参数信息包括邻频基站与所述各同频基站中的 参考点之间的路损, 该邻频基站的天线方向图, 邻频干扰抑制 (ACIR ) ; 所述确定同频基站功率分配权重的信息包括但不限于基站下属的服务用 户的优先级、 各优先级对应的用户数量, 和 /或基站的负载状况; The interference coordination parameter information of the adjacent frequency base station includes a path loss between the adjacent frequency base station and a reference point in the same frequency base station, an antenna pattern of the adjacent frequency base station, and adjacent channel interference suppression (ACIR); The information for determining the power allocation weight of the same-frequency base station includes, but is not limited to, the priority of the service user subordinate to the base station, the number of users corresponding to each priority, and/or the load status of the base station;
所述用户的优先级是指用户开户时自行选择的用户等级, 或根据用户的 消费行为和 /或用户的 QoS ( Quality of Service )需求确定的用户等级; The priority of the user refers to the user level selected by the user when the user opens the account, or the user level determined according to the user's consumption behavior and/or the user's QoS (Quality of Service) requirement;
所述负载状况是指基站根据当前无线资源状态 (Radio Resource Status ) 和 /或综合的小区可用容量( Available Capacity )信息确定的负载等级; The load status refers to a load level determined by the base station according to current radio resource status (Radio Resource Status) and/or integrated cell available capacity (Available Capacity) information;
所述基站中的参考点是指该基站的同频基站对该基站覆盖区域内干扰最 强的点; The reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station;
所述参考点的位置、基站覆盖区域内各点可接受最大干扰水平的最小值、
路损的确定方法包括但不限于路测、 仿真、 系统预热; The location of the reference point, the minimum value of the maximum interference level acceptable at each point in the coverage area of the base station, The method for determining the path loss includes but is not limited to road test, simulation, and system warm-up;
所述中心控制节点进行干扰协调的方法是中心控制节点对同频基站进行 功率控制。 The method for the center control node to perform interference coordination is that the central control node performs power control on the same frequency base station.
下面结合附图及具体实施例对本发明进行详细说明。 The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
发明对应的一个应用场景如图 2所示, 主要涉及的网元有中心控制节点 An application scenario corresponding to the invention is shown in Figure 2. The main network element involved has a central control node.
( CCP, Central control point ) 及基站。 (CCP, Central control point) and base station.
所述中心控制节点主要负责根据下属基站向其提出的主系统空闲频谱资 源申请为下属各基站协调分配主系统空闲频谱资源; 所述主系统空闲频谱资 源是指未被授权系统使用的频谱资源。 The central control node is mainly responsible for coordinating the allocation of the primary system idle spectrum resources to the subordinate base stations according to the primary system idle spectrum resource application proposed by the subordinate base station; the primary system idle spectrum resources refer to the spectrum resources used by the unlicensed system.
所述中心控制节点可以与其它中心控制节点交互主系统空闲频谱资源使 用信息以避免干扰; 所述中心控制节点还可以根据下属基站提供的干扰协调 信息, 对下属基站进行功率控制, 以实现小区间的干扰协调。 The central control node may interact with other central control nodes to use the primary system idle spectrum resource usage information to avoid interference; the central control node may also perform power control on the subordinate base stations according to the interference coordination information provided by the subordinate base stations to implement inter-cell communication. Interference coordination.
所述中心控制节点中存储下属基站频谱使用情况信息。 The central control node stores spectrum usage information of the subordinate base station.
发明对应的小区间下行干扰模型如图 3所示, 用户 2接收到基站 2的信 息受到在相邻小区内基站 1在相同频率下发给用户 1的信号的干扰, 而对于 用户 1来说, 同样会受到来自于基站 2的同频干扰。 当两个用户均处于基站 1、 2所属小区的交界处时, 用户接收到的有用信号和干扰信号强度相当, 这 种干扰将会非常严重, 用户的通信质量也会急剧下降。 The corresponding inter-cell downlink interference model of the invention is shown in FIG. 3. The information received by the user 2 by the base station 2 is interfered by the signal sent by the base station 1 to the user 1 at the same frequency in the adjacent cell, and for the user 1, It is also subject to co-channel interference from base station 2. When both users are at the junction of the cells to which the base stations 1 and 2 belong, the useful signal and the interference signal received by the user are equal, and the interference will be very serious, and the communication quality of the user will also drop drastically.
图 4给出了发明中的参考点选择示意图, 图 4给出了以基站 1为工作基 站时, 基站 1 的同频基站 2、 3在基站 1 中的参考点 (图中黑点) , 基站 2 在工作基站 1中的参考点^ ^站 2在工作基站 1覆盖区域内干扰最强的点, 基站 3在工作基站 1中的参考点是基站 3在工作基站 1覆盖区域内干扰最强 的点。 基站 1中的参考点^ ^站 2在基站 1中的参考点与基站 3在基站 1中 的参考点的统称。 同理, 可以确定基站 1、 3在工作基站 2中的参考点和基站 1、 2在工作基站 3中的参考点。 FIG. 4 shows a schematic diagram of reference point selection in the invention, and FIG. 4 shows a reference point (black point in the figure) of the same-frequency base station 2, 3 of the base station 1 when the base station 1 is the working base station, the base station 2 The reference point in the working base station 1 is the most interfered point in the coverage area of the working base station 1. The reference point of the base station 3 in the working base station 1 is that the base station 3 has the strongest interference in the coverage area of the working base station 1. point. The reference point in the base station 1 is a collective term for the reference point in the base station 1 and the reference point of the base station 3 in the base station 1. Similarly, the reference point of the base station 1, 3 in the working base station 2 and the reference point of the base station 1, 2 in the working base station 3 can be determined.
中心控制节点收到下属基站 1的同频干扰协调请求后, 请求基站 1的同 频基站和邻频基站上报干扰协调参数信息; 中心控制节点利用上报的干扰协 调参数信息对其下属基站 1及其同频基站进行干扰协调。
下文中将对本发明的实施例进行详细说明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 下面以三个基 站间的同频干扰为例进行说明, 可理解地, 在应用本发明的场景中不限于三 个同频基站的组网形式。 After receiving the co-frequency interference coordination request of the subordinate base station 1, the central control node requests the same-frequency base station and the adjacent-frequency base station of the base station 1 to report the interference coordination parameter information; the central control node uses the reported interference coordination parameter information to its subordinate base station 1 and its subordinate base station 1 The same frequency base station performs interference coordination. Embodiments of the invention will be described in detail below. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The following description is made by taking the same-frequency interference between three base stations as an example. It can be understood that the scenario in which the present invention is applied is not limited to the networking form of three intra-frequency base stations.
应用实例 1 Application example 1
如图 5所示, 干扰协调信息方法应用实例 1的实现流程包括以下步骤: 步骤 501 : 基站 1连同下属终端进行干扰测量, 并根据测量结果判断是 否向中心控制节点发送同频干扰协调请求; As shown in FIG. 5, the implementation process of the interference coordination information method application example 1 includes the following steps: Step 501: The base station 1 performs interference measurement together with the subordinate terminal, and determines, according to the measurement result, whether to send the co-channel interference coordination request to the central control node;
这里的干扰测量主要是基站连同终端测量受到同频干扰的强度; 干扰测 量的触发条件可以是终端的通信质量不能满足要求, 或者有新的邻基站启动 等; The interference measurement here is mainly that the base station and the terminal measure the strength of the same-frequency interference; the trigger condition of the interference measurement may be that the communication quality of the terminal cannot meet the requirement, or a new neighbor base station is started;
所述测量结果包括:受干扰频谱的中心频点、带宽,受同频干扰的强度; 基站判断是否向中心控制节点发送同频干扰协调请求的方法有多种, 比 如, 针对同一受干扰频谱, 受同频干扰的强度大于预设干扰强度阔值的终端 相对于上报测量结果的终端的百分比超过某个预设值, 比如 90%。 或者受同 频干扰的强度大于干扰强度阔值的终端的数量超过某个预设值, 比如 20个。 The measurement result includes: a center frequency point and a bandwidth of the interfered spectrum, and the strength of the same frequency interference; the base station determines whether to send the same frequency interference coordination request to the central control node, for example, for the same interfered spectrum, The percentage of the terminal that is stronger than the preset interference strength threshold than the terminal that reports the measurement result exceeds a certain preset value, such as 90%. Or the number of terminals that are stronger than the interference strength threshold by the same frequency interference exceeds a certain preset value, for example, 20.
该干扰强度阔值与所述预设值根据仿真, 或业务的通信质量要求设定。 步骤 502: 基站 1向所属 CCP发送同频干扰协调请求; The interference intensity threshold and the preset value are set according to simulation, or communication quality requirements of the service. Step 502: The base station 1 sends a co-channel interference coordination request to the CCP;
所述同频干扰协调请求包括受干扰频谱的中心频点、 带宽。 The co-channel interference coordination request includes a center frequency and a bandwidth of the interfered spectrum.
步骤 503: CCP收到基站 1的请求后, 确定其下属基站中基站 1的同频 基站和基站 1的邻频基站; Step 503: After receiving the request of the base station 1, the CCP determines the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the subordinate base station;
具体地, CCP根据所述同频干扰协调请求中的中心频点及带宽确定所述 受干扰基站的同频基站以及所述受干扰基站的邻频基站。 Specifically, the CCP determines an intra-frequency base station of the interfered base station and an adjacent-frequency base station of the interfered base station according to a center frequency point and a bandwidth in the co-channel interference coordination request.
优选的, CCP其下属基站中基站 1的同频基站和基站 1的邻频基站可以 是 CCP下属与基站 1相邻的基站。 Preferably, the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the CCP's subordinate base station may be base stations adjacent to the base station 1 of the CCP.
进一步的, CCP其下属基站中基站 1的同频基站和基站 1的邻频基站也
可以是 CCP下属与基站 1相邻的基站以及 CCP下属与基站 1不相邻的基站。 所述基站 1的同频基站指使用的频谱与基站 1下属终端受干扰频语相同 或交叠的基站; 基站 1的邻频基站指使用与基站 1下属终端受干扰频语相邻 的频谱的基站。 Further, the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the subordinate base station of the CCP are also It may be a base station adjacent to the base station 1 of the CCP and a base station not adjacent to the base station 1 by the CCP. The same-frequency base station of the base station 1 refers to a base station whose used spectrum is the same as or overlaps with the interference frequency of the terminal of the base station 1; the adjacent-frequency base station of the base station 1 refers to a spectrum that is adjacent to the interfered frequency of the terminal of the base station 1 Base station.
步骤 504a-504b: CCP向基站 1发送同频干扰协调参数信息请求,基站 1 反馈 CCP同频干扰协调参数信息; Steps 504a-504b: The CCP sends a co-frequency interference coordination parameter information request to the base station 1, and the base station 1 feeds back the CCP co-channel interference coordination parameter information;
这里同频干扰协调参数信息请求携带的消息包括 CCP 下属基站的同频 基站标识及其覆盖范围; Here, the message carried by the co-frequency interference coordination parameter information request includes the same-frequency base station identifier of the subordinate base station of the CCP and its coverage;
这里同频干扰协调参数信息包括服务用户优先级、 各优先级对应的用户 数量和 /或基站的负载状况, 基站中的参考点位置、基站覆盖区域内各点可接 受最大干扰水平的最小值, 基站的同频基站与所述参考点之间的路损, 基站 的天线方向图, 基站的当前发射功率的上限值; Here, the co-channel interference coordination parameter information includes a service user priority, a number of users corresponding to each priority, and/or a load status of the base station, a reference point position in the base station, and a minimum value of the maximum interference level acceptable at each point in the coverage area of the base station, The path loss between the same-frequency base station of the base station and the reference point, the antenna pattern of the base station, and the upper limit value of the current transmit power of the base station;
504b中, 基站 1收到 CCP的同频干扰协调参数信息请求后根据同频干 扰协调参数配置, 获取相关参数的数据并发送给 CCP; In 504b, after receiving the request of the same-frequency interference coordination parameter information of the CCP, the base station 1 acquires the data of the relevant parameter according to the same-frequency interference coordination parameter configuration, and sends the data to the CCP;
各参数的数据的获取方法如下: The method for obtaining the data of each parameter is as follows:
服务用户优先级可以在用户开户时自行选择,或根据用户的消费行为和 / 或用户的 QoS需求确定; The priority of the service user can be selected at the time of user opening, or determined according to the user's consumption behavior and/or the user's QoS requirements;
负载状况是指基站根据当前无线资源状态 (Radio Resource Status )和 / 或综合的小区可用容量( Available Capacity )信息确定的负载等级; The load status refers to a load level determined by the base station according to current radio resource status (Radio Resource Status) and/or integrated cell available capacity (Available Capacity) information;
基站中的参考点是该基站的同频基站对该基站覆盖区域内干扰最强的点, 参考点的位置可通过路测、 仿真、 系统预热等方法确定; The reference point in the base station is the point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station, and the position of the reference point can be determined by means of road test, simulation, system warm-up, and the like;
基站覆盖区域内各点可接受最大干扰水平的最小值、 基站的同频基站与 步骤 505a-505b: CCP向基站 1的同频基站发送同频干扰协调参数信息 请求, 基站 1的同频基站反馈 CCP同频干扰协调参数信息; The minimum value of the maximum interference level acceptable to each point in the coverage area of the base station, the same-frequency base station of the base station, and steps 505a-505b: The CCP sends the same-frequency interference coordination parameter information request to the same-frequency base station of the base station 1, and the same-frequency base station feedback of the base station 1 CCP co-channel interference coordination parameter information;
这里的同频干扰协调参数信息请求和同频干扰协调参数信息的内容同步
骤 504a-504b。 Here, the co-channel interference coordination parameter information request and the content synchronization of the co-channel interference coordination parameter information are synchronized. Steps 504a-504b.
步骤 506a-506b: CCP向基站 1的邻频基站发送邻频干扰协调参数信息 请求, 基站 1的邻频基站反馈 CCP邻频干扰协调参数信息; Steps 506a-506b: The CCP sends a neighboring frequency interference coordination parameter information request to the neighboring frequency base station of the base station 1, and the adjacent frequency base station of the base station 1 feeds back the CCP adjacent frequency interference coordination parameter information;
这里邻频干扰协调参数信息请求携带的信息包括受干扰频谱的中心频点、 带宽, 各同频基站中的参考点; Here, the information carried by the adjacent-frequency interference coordination parameter information request includes a central frequency point and a bandwidth of the interfered spectrum, and a reference point in each of the same-frequency base stations;
这里邻频干扰协调参数信息包括基站 1的邻频基站与基站 1及其同频基 站中的所有参考点之间的路损,该基站的天线方向图,邻频干扰抑制( ACIR )。 Here, the adjacent frequency interference coordination parameter information includes path loss between the adjacent frequency base station of the base station 1 and all reference points in the base station 1 and its co-frequency base station, the antenna pattern of the base station, and adjacent channel interference suppression (ACIR).
如前所述, 一个基站中的参考点指该基站的同频基站在该基站中的干扰 最强的点。例如,有两个同频基站 BS1和 BS2, BS1在 BS2中的参考点为 i21 , BS2在 BS1中的参考点为 i12, 则 "所述同频基站中所有参考点"指的是 BS1 中的 i12和 BS2中的 i21 As mentioned before, the reference point in a base station refers to the point at which the base station's co-frequency base station has the strongest interference in the base station. For example, there are two co-frequency base stations BS1 and BS2, the reference point of BS1 in BS2 is i 21 , and the reference point of BS2 in BS1 is i 12 , then "all reference points in the same-frequency base station" refers to BS1 i 21 in i 12 and BS 2
506b中, 基站 1的邻频基站收到 CCP的邻频干扰协调参数信息请求后 根据邻频干扰协调参数配置, 获取相关参数的数据并发送给 CCP; 506b, the neighboring base station of the base station 1 receives the CCP's adjacent-frequency interference coordination parameter information request, and according to the adjacent-frequency interference coordination parameter configuration, acquires the data of the relevant parameter and sends it to the CCP;
各参数的数据的获取方法如下: The method for obtaining the data of each parameter is as follows:
基站 1的邻频基站与基站 1及其同频基站的所有参考点之间的路损, 可 通过路测、 仿真、 系统预热等方法确定; The path loss between the adjacent base station of the base station 1 and all reference points of the base station 1 and its same-frequency base station can be determined by means of road test, simulation, system warm-up, and the like;
邻频干扰抑制(ACIR )可以根据受干扰频谱的中心频点、 带宽, 由发射 机、接收机的指标计算得到,也可以通过路测、仿真、 系统预热等方法确定; 步骤 507: CCP对基站 1及其同频基站进行干扰协调; The adjacent channel interference suppression (ACIR) can be calculated from the indicators of the transmitter and receiver according to the center frequency and bandwidth of the interfered spectrum, or can be determined by road test, simulation, system warm-up, etc. Step 507: CCP pair Base station 1 and its co-frequency base station perform interference coordination;
CCP进行干扰协调的方法是: 首先根据同频干扰协调参数中的服务用户 优先级、各优先级对应的用户数量和 /或基站的负载状况为基站 1及其同频基 站功率分配权重; 然后根据邻频干扰协调参数、 其它的同频干扰协调参数、 基站 1及其同频基站的权重及基站 1及其同频基站使用所述同段受干扰频谱 时的当前发射功率的上限值, 在保证基站 1及其同频基站产生的下行干扰可 接受的情况下,计算基站 1及其同频基站的最大发射功率; 最后 CCP通知基 站 1及其同频基站将工作发射功率调整至小于或等于最大发射功率。 The method for performing interference coordination by the CCP is: first, assigning weights to the base station 1 and its co-frequency base station power according to the priority of the service user in the co-channel interference coordination parameter, the number of users corresponding to each priority, and/or the load status of the base station; The adjacent channel interference coordination parameter, other co-channel interference coordination parameters, the weight of the base station 1 and its co-frequency base station, and the upper limit value of the current transmit power when the base station 1 and its co-frequency base station use the same-stage interfered spectrum To ensure that the downlink interference generated by the base station 1 and its co-frequency base station is acceptable, calculate the maximum transmit power of the base station 1 and its co-frequency base station; finally, the CCP informs the base station 1 and its co-frequency base station to adjust the working transmit power to less than or equal to Maximum transmit power.
干扰强度是根据干扰协调参数计算得到的。 通常不同的终端的性能要求 差别不大, 可以认为与终端无关。 可接受的干扰水平是可以计算的, 计算最
大发射功率时会提到。 The interference strength is calculated based on the interference coordination parameters. Generally, the performance requirements of different terminals are not much different, and it can be considered that it is independent of the terminal. Acceptable interference levels are measurable Large transmission power will be mentioned.
应用实例 2 Application example 2
图 6为根据基站下属服务用户优先级及各优先级对应的用户数量确定基 站权重, 实现功率控制的流程图; 下面对其做详细说明: FIG. 6 is a flowchart of determining base station weights and implementing power control according to the priority of the service users of the base station and the number of users corresponding to each priority;
步骤 601 : 基站 1连同下属终端进行干扰测量, 并根据测量结果判断是 否向中心控制节点发送同频干扰协调请求; Step 601: The base station 1 performs interference measurement together with the subordinate terminal, and determines, according to the measurement result, whether to send the co-channel interference coordination request to the central control node;
这里的干扰测量主要是基站连同终端测量受到同频干扰的强度; 干扰测 量的触发条件可以是终端的通信质量不能满足要求, 或者有新的邻基站启动 等; The interference measurement here is mainly that the base station and the terminal measure the strength of the same-frequency interference; the trigger condition of the interference measurement may be that the communication quality of the terminal cannot meet the requirement, or a new neighbor base station is started;
所述测量结果包括:受干扰频谱的中心频点、带宽,受同频干扰的强度; 步骤 602: 基站 1向所属 CCP发送同频干扰协调请求; The measurement result includes: a center frequency of the interfered spectrum, a bandwidth, and an intensity of the same-frequency interference; Step 602: The base station 1 sends a co-channel interference coordination request to the CCP;
步骤 603: CCP收到基站 1的请求后, 确定其下属基站中基站 1的同频 基站和基站 1的邻频基站; Step 603: After receiving the request of the base station 1, the CCP determines the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the subordinate base station;
所述基站 1的同频基站指使用与基站 1下属终端受干扰频语相同或交叠 的基站, 在该实施例中, 基站 1的同频基站为基站 2、 3 ; 基站 1的邻频基站 指使用与基站 1下属终端受干扰频谱相邻的频谱的基站。 The same-frequency base station of the base station 1 refers to a base station that uses the same or overlapping interference frequency as the subordinate terminal of the base station 1. In this embodiment, the same-frequency base station of the base station 1 is the base station 2, 3; the adjacent-frequency base station of the base station 1 Refers to a base station that uses a spectrum adjacent to the interfered spectrum of the terminal of the base station 1.
步骤 604: 基站 1、 2、 3根据 CCP的请求向 CCP提供同频干扰协调参 数信息, 包括服务用户优先级、 各优先级对应的用户数量, 基站中的参考点 位置, 基站覆盖区域内各点可接受最大干扰水平的最小值, 基站的同频基站 与所述参考点之间的路损,基站的天线方向图及基站当前发射功率的上限值; 各参数的数据的获取方法如下: Step 604: The base station 1, 2, and 3 provide the same-frequency interference coordination parameter information to the CCP according to the request of the CCP, including the priority of the service user, the number of users corresponding to each priority, the reference point position in the base station, and the points in the coverage area of the base station. The minimum value of the maximum interference level, the path loss between the same-frequency base station of the base station and the reference point, the antenna pattern of the base station, and the upper limit of the current transmit power of the base station; the method for obtaining the data of each parameter is as follows:
服务用户优先级可以在用户开户时自行选择,或根据用户的消费行为和 / 或才艮据用户的 QoS需求确定; The priority of the service user can be selected by the user when the account is opened, or determined according to the user's consumption behavior and/or according to the user's QoS requirements;
基站中的参考点是该基站的同频基站对该基站覆盖区域内干扰最强的点 , 参考点的位置可通过路测、 仿真、 系统预热等方法确定; The reference point in the base station is the point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station, and the position of the reference point can be determined by means of road test, simulation, system warm-up, and the like;
基站覆盖区域内各点可接受最大干扰水平的最小值、 基站的同频基站与
步骤 605: 基站 1的邻频基站根据 CCP的请求向 CCP提供邻频干扰协 调参数信息, 包括基站 1的邻频基站与基站 1、 2、 3中的所有参考点之间的 路损, 基站的天线方向图, 邻频干扰抑制(ACIR )。 各参数的数据的获取方 法如下: The minimum value of the maximum interference level that can be accepted at each point in the coverage area of the base station, and the same-frequency base station of the base station Step 605: The adjacent-frequency base station of the base station 1 provides the adjacent-frequency interference coordination parameter information to the CCP according to the request of the CCP, including the path loss between the adjacent-frequency base station of the base station 1 and all the reference points in the base stations 1, 2, and 3, and the base station Antenna pattern, adjacent channel interference suppression (ACIR). The method for obtaining the data of each parameter is as follows:
基站 1的邻频基站与基站 1、 2、 3中的所有参考点之间的路损, 可通过 路测、 仿真、 系统预热等方法确定; The path loss between the adjacent base station of the base station 1 and all reference points in the base stations 1, 2, 3 can be determined by road test, simulation, system warm-up, etc.
邻频干扰抑制(ACIR )可以根据受干扰频谱的中心频点、 带宽, 由发射 机、接收机的指标计算得到,也可以通过路测、仿真、 系统预热等方法确定; 步骤 606: CCP对基站 1、 2、 3进行干扰协调。 The adjacent channel interference suppression (ACIR) can be calculated from the indicators of the transmitter and receiver according to the center frequency and bandwidth of the interfered spectrum, or can be determined by road test, simulation, system warm-up, etc. Step 606: CCP pair The base stations 1, 2, and 3 perform interference coordination.
CCP进行干扰协调的方法是: 首先根据同频干扰协调参数中的服务用户 优先级、 各优先级对应的用户数量为基站 1、 2、 3分配功率权重; 然后根据 邻频干扰协调参数、 其它的同频干扰协调参数、 基站 1、 2、 3的权重及基站 1、 2、 3使用所述受干扰频谱时的最大发射功率, 在保证基站 1、 2、 3产生 的下行干扰可接受的情况下, 计算基站 1、 2、 3的最大发射功率; 最后 CCP 通知基站 1、 2、 3按照 CCP计算出来的最大发射功率工作。 The CCP performs interference coordination by: first assigning power weights to the base stations 1, 2, and 3 according to the priority of the service users in the co-channel interference coordination parameters and the number of users corresponding to each priority; and then, according to the adjacent frequency interference coordination parameters, other Co-channel interference coordination parameters, weights of base stations 1, 2, 3, and maximum transmit power when base stations 1, 2, 3 use the interfered spectrum, while ensuring acceptable downlink interference generated by base stations 1, 2, 3 Calculate the maximum transmit power of the base stations 1, 2, 3; Finally, the CCP informs the base stations 1, 2, 3 to operate according to the maximum transmit power calculated by the CCP.
其中, 功率权重确定方法为: 假设用户的优先级分别以 Nl、 N2、 N3表 示, N1优先级最高, N2次之, N3最低, 基站 k下属服务用户各优先级对应 的用户数量可设为 nkl、 nk2、 nk3 ( k=l,2,3 ) , 分别对应 Nl、 N2、 N3。 基站 k 的权重可以表示为 k 。 其中, 0.6 nkl 、
The method for determining the power weight is as follows: Assume that the priority of the user is represented by N1, N2, and N3 respectively, and the priority of N1 is the highest, N2 is the second, and N3 is the lowest. The number of users corresponding to the priorities of the service users of the base station k can be set to n. Kl , n k2 , n k3 ( k=l, 2, 3 ) correspond to Nl, N2, and N3, respectively. The weight of base station k can be expressed as k . Among them, 0.6 n kl ,
0.3nk2、 0.1nk3中的 0.6、 0.3和 0.1是为了体现出 nkl、 nk2、 3的优先级高 低, 因此, nkl、 nk2、 nk3分别釆用系数 0.6、 0.3和 0.1。 同理, 还可以釆用 相似的其它系数来表示优先级的高低, 例如: 0.7nkl、 0.2nk2、 0.1nk3„ 0.6, 0.3, and 0.1 in 0.3n k2 and 0.1n k3 are to reflect the priority levels of n kl , n k2 , and 3. Therefore, n kl , n k2 , and n k3 respectively use coefficients of 0.6, 0.3, and 0.1. Similarly, similar other coefficients can be used to indicate the priority level, for example: 0.7n kl , 0.2n k2 , 0.1n k3 „
计算同频基站最大发射功率的方法: Method for calculating the maximum transmit power of an intra-frequency base station:
首先以基站 1为工作基站,基站 2、基站 3在基站 1中的参考点分别 12和 i13 , 根据参考点 12处的用户终端最小接收机灵敏度和接收机干扰保护比, 计 算基站 1中参考点 12处的用户终端使用频语^时, 能够接受的最大干扰水平 hcceptable(in, fj ) , 计算公式为:
其中, x— τ^ΐίίτ^ ^,/表示参考点处的用户终端最小接收机灵敏度, PR表 示接收机干 4尤保护比。 First, the base station 1 is the working base station, and the reference points of the base station 2 and the base station 3 in the base station 1 are respectively 12 and i 13 , and the reference in the base station 1 is calculated according to the minimum receiver sensitivity and the receiver interference protection ratio of the user terminal at the reference point 12 . The maximum interference level hcceptable(in, fj ) that can be accepted when the user terminal at point 12 uses the frequency ^, is calculated as: Where x- τ^ΐίίτ^ ^, / represents the minimum receiver sensitivity of the user terminal at the reference point, and PR represents the receiver 4 protection ratio.
进一步的, 计算基站 A =2, 的最大发射功率: Further, calculate the maximum transmit power of the base station A = 2,
∑ =1,„≠1μη表示除工作基站 1外其它两个同频基站的权重之和, 其中, 表示频谱 fj的邻频; Ptx(fj, kk) 表示使用邻频 的基站 kk的最大发射功率, Lp(i12,fjj, 表示使用邻频^的基站 和参考点 12之间的路损; 0(ί12,:ί]Ί,kk) 表示使用邻频 的基站 ^的总体增益, 包括天线增益, 天线方向图等; Oj 表示邻频^的数目; N表示使用邻频^的基站的数目 表示邻道干扰比。 ∑ =1 , „ ≠ 1 μ η represents the sum of the weights of the other two intra-frequency base stations except the working base station 1, where the adjacent frequency of the spectrum fj is represented; P tx (fj, kk) represents the base station kk using the adjacent frequency The maximum transmit power, L p (i 12 , fjj, represents the path loss between the base station using the adjacent frequency ^ and the reference point 12 ; 0 (ί 12 ,: ί ] Ί , kk) indicates the total base station using the adjacent frequency ^ Gain, including antenna gain, antenna pattern, etc.; Oj represents the number of adjacent frequencies; N represents the number of base stations using adjacent frequencies, and the adjacent channel interference ratio is represented.
同理, 根据各基站的权重 μ¾和工作基站 1中参考点 13处用户终端使用频 语 ^时能够接受的最大干扰水平 Iacceptable(i , ^), 计算得到基站 k ( k=2,3 )的 最大发射功率 /^(ί13,/^ Similarly, the base station k (k=2,3) is calculated according to the weight of each base station μ3⁄4 and the maximum interference level I acceptable (i , ^) that the user terminal can use at the reference point 13 in the working base station 1 to use the frequency. Maximum transmit power /^(ί 13 , /^
最后取 mini/^ u, ;.,/^,/3^^, ;.,/^}为基站 k (k=2,3)相对于工作基站 1 计算得到的基站 k的预计最大发射功率。 Finally, take mini/^ u, ;., /^, / 3 ^^, ;., /^} is the estimated maximum transmit power of the base station k calculated by the base station k (k=2, 3) relative to the working base station 1.
同理选择基站 2为工作基站, 计算得到基站 A =7, 的预计最大发射 功率为 min{ tx(i21, fj , k), Ptx(i23, fj , k))。 选择基站 3为工作基站时, 计算得到的 基站 : (k=l,2)的预计最大发射功率为ηίηί/^ :^,;.,/^,/^^:^,;.,/^}»直到所 有同频基站都被选为一次工作基站。 Similarly, the base station 2 is selected as the working base station, and the estimated maximum transmission power of the base station A=7 is calculated as min{ tx (i 21 , fj , k), P tx (i 23 , fj , k)). When the base station 3 is selected as the working base station, the calculated base station: (k=l, 2) has an estimated maximum transmit power of ηίηί/^ :^,;., /^, /^^:^,;., /^} » Until all co-frequency base stations are selected as one working base station.
假设基站 k当前的最大发射功率为 Pmax_fc =l,2,3 ) , 则最终各基站的最 大发射功率分别为: Assuming that the current maximum transmit power of the base station k is P max _ fc = 1, 2, 3 ), the maximum transmit power of each base station is:
基站 1的最大发射功率: Maximum transmit power of base station 1:
min{min{Ptx(i21,fj, l),Ptx i23,fj, l)}, min{Ptx(i31, fj, l),Ptx i32,fj, l)}, Pmax— i}
基站 2的最大发射功率: Min{min{P tx (i 21 ,fj, l), P tx i 23 ,fj, l)}, min{P tx (i 31 , fj, l), P tx i 32 ,fj, l)}, P max — i} Maximum transmit power of base station 2:
min{min{Ptx(i12, fjt 2), Ptx(i13, fj, 2)}, min{Ptx(i31, fjt 2), Ptx(i32, fj, 2)}, Pmax 2} 基站 3的最大发射功率: Min{min{P tx (i 12 , f jt 2), P tx (i 13 , fj, 2)}, min{P tx (i 31 , f jt 2), P tx (i 32 , fj, 2) }, P max 2 } Maximum transmit power of base station 3:
min{min{Ptx(i12, fj, 3), Ptx(i13, fj, 3)}, min{Ptx(i21, fj, 3), Ptx(i23, fj, 3)}, Pmax 3} 其中, mT1表示基站 n相对于工作基站 m的参考点 ( n,m=l,2,3 n≠m ") 。 Min{min{P tx (i 12 , fj, 3), P tx (i 13 , fj, 3)}, min{P tx (i 21 , fj, 3), P tx (i 23 , fj, 3) }, P max 3 } where mT1 represents the reference point (n, m=l, 2, 3 n≠m ") of the base station n with respect to the working base station m.
应用实例 3 Application example 3
图 7为根据基站的负载状况确定基站权重, 实现功率控制的流程, 具体 包括: FIG. 7 is a flowchart of determining a base station weight according to a load condition of a base station, and implementing power control, specifically including:
步骤 701 : 基站 1连同下属终端进行干扰测量, 并根据测量结果判断是 否向中心控制节点发送同频干扰协调请求; Step 701: The base station 1 performs interference measurement together with the subordinate terminal, and determines, according to the measurement result, whether to send the co-channel interference coordination request to the central control node;
这里的干扰测量主要是基站连同终端测量受到同频干扰的强度; 干扰测 量的触发条件可以是终端的通信质量不能满足要求, 或者有新的邻基站启动 等; The interference measurement here is mainly that the base station and the terminal measure the strength of the same-frequency interference; the trigger condition of the interference measurement may be that the communication quality of the terminal cannot meet the requirement, or a new neighbor base station is started;
所述测量结果包括:受干扰频谱的中心频点、带宽,受同频干扰的强度; 步骤 702: 基站 1向所属 CCP发送同频干扰协调请求; The measurement result includes: a center frequency of the interfered spectrum, a bandwidth, and an intensity of the same-frequency interference; Step 702: The base station 1 sends a co-channel interference coordination request to the CCP;
步骤 703: CCP收到基站 1的请求后, 确定其下属基站中基站 1的同频 基站和基站 1的邻频基站; Step 703: After receiving the request of the base station 1, the CCP determines the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the subordinate base station;
所述基站 1的同频基站指使用与基站 1下属终端受干扰频语相同或交叠 的基站, 在该实施例中, 基站 1的同频基站为基站 2、 3 ; 基站 1的邻频基站 指使用与基站 1下属终端受干扰频谱相邻的频谱的基站。 The same-frequency base station of the base station 1 refers to a base station that uses the same or overlapping interference frequency as the subordinate terminal of the base station 1. In this embodiment, the same-frequency base station of the base station 1 is the base station 2, 3; the adjacent-frequency base station of the base station 1 Refers to a base station that uses a spectrum adjacent to the interfered spectrum of the terminal of the base station 1.
步骤 704: 基站 1、 2、 3根据 CCP的请求向 CCP提供同频干扰协调参 数信息, 包括基站的负载状况, 基站中的参考点位置, 基站覆盖区域内各点 可接受最大干扰水平的最小值, 基站的同频基站与所述参考点之间的路损, 基站的天线方向图及基站当前发射功率的上限值; Step 704: The base station 1, 2, and 3 provide the CCP with the same-frequency interference coordination parameter information according to the request of the CCP, including the load status of the base station, the reference point position in the base station, and the minimum value of the maximum interference level acceptable at each point in the coverage area of the base station. a path loss between the same-frequency base station of the base station and the reference point, an antenna pattern of the base station, and an upper limit value of the current transmit power of the base station;
各参数的数据的获取方法如下: The method for obtaining the data of each parameter is as follows:
负载状况是指基站根据当前无线资源状态 (Radio Resource Status )和 /
或综合的小区可用容量( Available Capacity )信息确定的负载等级; The load status refers to the base station according to the current radio resource status (Radio Resource Status) and / Or a load level determined by the integrated available capacity information;
基站中的参考点是该基站的同频基站对该基站覆盖区域内干扰最强的点 , 参考点的位置可通过路测、 仿真、 系统预热等方法确定; The reference point in the base station is the point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station, and the position of the reference point can be determined by means of road test, simulation, system warm-up, and the like;
基站覆盖区域内各点可接受最大干扰水平的最小值、 基站的同频基站与 The minimum value of the maximum interference level that can be accepted at each point in the coverage area of the base station, and the same-frequency base station of the base station
步骤 705: 基站 1的邻频基站根据 CCP的请求向 CCP提供邻频干扰协 调参数信息, 包括基站 1的邻频基站与基站 1、 2、 3的所有参考点之间的路 损, 该邻频基站的天线方向图, 邻频干扰抑制 (ACIR ) 。 Step 705: The adjacent-frequency base station of the base station 1 provides the adjacent-frequency interference coordination parameter information to the CCP according to the request of the CCP, including the path loss between the adjacent-frequency base station of the base station 1 and all reference points of the base stations 1, 2, and 3, the adjacent frequency. Antenna pattern of the base station, adjacent channel interference suppression (ACIR).
各参数的数据的获取方法如下: The method for obtaining the data of each parameter is as follows:
基站 1的邻频基站与基站 1、 2、 3的所有参考点之间的路损, 可通过路 测、 仿真、 系统预热等方法确定; The path loss between the adjacent base station of the base station 1 and all reference points of the base stations 1, 2, 3 can be determined by means of road test, simulation, system warm-up, etc.;
邻频干扰抑制(ACIR )可以根据受干扰频谱的中心频点、 带宽, 由发射 机、接收机的指标计算得到,也可以通过路测、仿真、 系统预热等方法确定; 步骤 706: CCP对基站 1、 2、 3进行干扰协调; The adjacent channel interference suppression (ACIR) can be calculated from the indicators of the transmitter and receiver according to the center frequency and bandwidth of the interfered spectrum, or can be determined by road test, simulation, system warm-up, etc. Step 706: CCP pair Base station 1, 2, 3 perform interference coordination;
CCP进行干扰协调的方法是: 首先根据同频干扰协调参数中的基站的负 载状况为基站 1、 2、 3分配功率权重; 然后根据邻频干扰协调参数、 其它的 同频干扰协调参数、 基站 1、 2、 3的权重及基站 1、 2、 3使用所述受干扰频 谱时的最大发射功率,在保证基站 1、 2、 3产生的下行干扰可接受的情况下, 计算基站 1、 2、 3的最大发射功率; 最后 CCP通知基站 1、 2、 3按照 CCP 计算出来的最大发射功率工作。 The method for performing interference coordination by the CCP is: first, assigning power weights to the base stations 1, 2, and 3 according to the load status of the base station in the co-channel interference coordination parameter; and then, according to the adjacent frequency interference coordination parameters, other co-channel interference coordination parameters, the base station 1 The weights of 2, 3 and the maximum transmit power when the base station 1, 2, 3 uses the interfered spectrum, and calculate the base stations 1, 2, 3 in case the downlink interference generated by the base stations 1, 2, 3 is acceptable. The maximum transmit power; the final CCP informs the base station 1, 2, 3 to operate according to the maximum transmit power calculated by the CCP.
以下仅对各基站功率权重的确定方法进行说明, 各基站的最大发射功率 的计算方法同应用实例 2。 In the following, only the method for determining the power weight of each base station will be described. The calculation method of the maximum transmit power of each base station is the same as that of the application example 2.
该应用实例 3中, 各基站的权重确定方法为权重确定方法为: 将基站的 负载状况按等级划分, 比如包括过载、 高、 中、低四个等级,可以用 Ll、 L2、 L3、 L4来表示, 也可以用 0到 100之间的整数表示, 等级越高或数值越大表 示该基站期望的发射功率越高。 基站 k的权重可以表示为 k = ^ , 其中 lk 6 {1^Λ2Λ3Λ4}或 lk 6 {0,1…: LOO}; lk的取值范围取决于基站负载状况的表 示形式。
应用实例 4 In the application example 3, the method for determining the weight of each base station is as follows: The load status of the base station is divided into levels, for example, four levels including overload, high, medium, and low, and can be used by L1, L2, L3, and L4. The representation may also be represented by an integer between 0 and 100. The higher the level or the larger the value, the higher the expected transmission power of the base station. The weight of the base station k can be expressed as k = ^ , where l k 6 {1^Λ 2 Λ 3 Λ 4 } or l k 6 {0,1...: LOO}; The value range of l k depends on the load status of the base station Representation. Application example 4
图 8为根据基站下属服务用户优先级, 各优先级对应的用户数量及基站 的负载状况确定权重, 实现功率控制的流程, 具体包括: FIG. 8 is a flowchart of determining a weight according to a priority of a service user of a base station, a number of users corresponding to each priority, and a load status of the base station, and implementing power control, specifically including:
步骤 801 : 基站 1连同下属终端进行干扰测量, 并根据测量结果判断是 否向中心控制节点发送同频干扰协调请求; Step 801: The base station 1 performs interference measurement together with the subordinate terminal, and determines, according to the measurement result, whether to send the co-channel interference coordination request to the central control node;
这里的干扰测量主要是基站连同终端测量受到同频干扰的强度; 干扰测 量的触发条件可以是终端的通信质量不能满足要求, 或者有新的邻基站启动 等; The interference measurement here is mainly that the base station and the terminal measure the strength of the same-frequency interference; the trigger condition of the interference measurement may be that the communication quality of the terminal cannot meet the requirement, or a new neighbor base station is started;
所述测量结果包括:受干扰频谱的中心频点、带宽,受同频干扰的强度; 步骤 802: 基站 1向所属 CCP发送同频干扰协调请求; The measurement result includes: a center frequency of the interfered spectrum, a bandwidth, and an intensity of the same-frequency interference; Step 802: The base station 1 sends a co-channel interference coordination request to the CCP;
步骤 803: CCP收到基站 1的请求后, 确定其下属基站中基站 1的同频 基站和基站 1的邻频基站; Step 803: After receiving the request of the base station 1, the CCP determines the same-frequency base station of the base station 1 and the adjacent-frequency base station of the base station 1 in the subordinate base station;
所述基站 1的同频基站指使用与基站 1下属终端受干扰频语相同或交叠 的基站, 在该实施例中, 基站 1的同频基站为基站 2、 3 ; 基站 1的邻频基站 指使用与基站 1下属终端受干扰频谱相邻的频谱的基站。 The same-frequency base station of the base station 1 refers to a base station that uses the same or overlapping interference frequency as the subordinate terminal of the base station 1. In this embodiment, the same-frequency base station of the base station 1 is the base station 2, 3; the adjacent-frequency base station of the base station 1 Refers to a base station that uses a spectrum adjacent to the interfered spectrum of the terminal of the base station 1.
步骤 804: 基站 1、 2、 3根据 CCP的请求向 CCP提供同频干扰协调参 数信息,包括服务用户优先级、各优先级对应的用户数量及基站的负载状况, 基站中的参考点位置, 基站覆盖区域内各点可接受最大干扰水平的最小值, 基站的同频基站与所述参考点之间的路损, 基站的天线方向图及基站当前发 射功率的上限值; Step 804: The base station 1, 2, and 3 provide the CCP with the same-frequency interference coordination parameter information according to the request of the CCP, including the priority of the service user, the number of users corresponding to each priority, and the load status of the base station, the reference point position in the base station, and the base station. a minimum value of the maximum interference level acceptable at each point in the coverage area, a path loss between the same-frequency base station of the base station and the reference point, an antenna pattern of the base station, and an upper limit value of the current transmit power of the base station;
各参数的数据的获取方法如下: The method for obtaining the data of each parameter is as follows:
服务用户优先级可以在用户开户时自行选择, 或根据用户的消费行为确 定和 /或才艮据用户的 QoS需求确定; The priority of the service user can be selected at the time of user account opening, or determined according to the user's consumption behavior and/or determined according to the user's QoS requirements;
负载状况是指基站根据当前无线资源状态 (Radio Resource Status )和 / 或综合的小区可用容量( Available Capacity )信息确定的负载等级; The load status refers to a load level determined by the base station according to current radio resource status (Radio Resource Status) and/or integrated cell available capacity (Available Capacity) information;
基站中的参考点是该基站的同频基站对该基站覆盖区域内干扰最强的点 , 参考点的位置可通过路测、 仿真、 系统预热等方法确定;
基站覆盖区域内各点可接受最大干扰水平的最小值、 基站的同频基站与 The reference point in the base station is the point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station, and the position of the reference point can be determined by means of road test, simulation, system warm-up, and the like; The minimum value of the maximum interference level that can be accepted at each point in the coverage area of the base station, and the same-frequency base station of the base station
步骤 805: 基站 1的邻频基站根据 CCP的请求向 CCP提供邻频干扰协 调参数信息, 包括基站 1的邻频基站与基站 1、 2、 3的所有参考点之间的路 损, 该邻频基站的天线方向图, 邻频干扰抑制 (ACIR ) 。 Step 805: The neighboring base station of the base station 1 provides the adjacent channel interference coordination parameter information to the CCP according to the request of the CCP, including the path loss between the adjacent base station of the base station 1 and all reference points of the base stations 1, 2, and 3, the adjacent frequency. Antenna pattern of the base station, adjacent channel interference suppression (ACIR).
各参数的数据的获取方法如下: The method for obtaining the data of each parameter is as follows:
基站 1的邻频基站与基站 1、 2、 3的所有参考点之间的路损, 可通过路 测、 仿真、 系统预热等方法确定; The path loss between the adjacent base station of the base station 1 and all reference points of the base stations 1, 2, 3 can be determined by means of road test, simulation, system warm-up, etc.;
邻频干扰抑制(ACIR )可以根据受干扰频谱的中心频点、 带宽, 由发射 机、接收机的指标计算得到,也可以通过路测、仿真、 系统预热等方法确定; 步骤 806: CCP对基站 1、 2、 3进行干扰协调; The adjacent channel interference suppression (ACIR) can be calculated from the indicators of the transmitter and receiver according to the center frequency and bandwidth of the interfered spectrum, or can be determined by road test, simulation, system warm-up, etc. Step 806: CCP pair Base station 1, 2, 3 perform interference coordination;
CCP进行干扰协调的方法是: 首先根据同频干扰协调参数中的服务用户 优先级、 各优先级对应的用户数量及基站的负载状况为基站 1、 2、 3分配功 率权重; 然后根据邻频干扰协调参数、基站 1、 2、 3的功率权重及基站 1、 2、 3使用所述受干扰频谱时的最大发射功率, 在保证基站 1、 2、 3产生的下行 干扰可接受的情况下, 计算基站 1、 2、 3的最大发射功率; 最后 CCP通知基 站 1、 2、 3按照 CCP计算出来的最大发射功率工作。 The CCP performs interference coordination by: first assigning power weights to the base stations 1, 2, and 3 according to the priority of the service users in the co-channel interference coordination parameters, the number of users corresponding to each priority, and the load status of the base station; Coordinating parameters, power weights of base stations 1, 2, 3, and maximum transmit power when base stations 1, 2, 3 use the interfered spectrum, and calculating if downlink interference generated by base stations 1, 2, 3 is acceptable The maximum transmit power of the base stations 1, 2, 3; The last CCP informs the base stations 1, 2, 3 to operate according to the maximum transmit power calculated by the CCP.
以下仅对各基站功率权重的确定方法进行说明, 各基站的最大发射功率 的计算方法同应用实例 2。 In the following, only the method for determining the power weight of each base station will be described. The calculation method of the maximum transmit power of each base station is the same as that of the application example 2.
该应用实例 4中, 各基站的权重确定方法为: 假设用户的优先级分别以 Nl、 N2、 N3表示, N1优先级最高, N2次之, N3最低,基站; t下属服务用户各优先级对应的用户数量可设为 nfcl、 nk2、 nk3 =l,2,3 ) , 分别对应 Nl、 N2、 N3。 将基站的负载状况按等级划分, 比如 包括过载、 高、 中、 低四个等级, 可以用 、 L2、 L3、 L4来表示, 也可以用 0到 100之间的整数表示, 等级越高或数值越大表示该基站期望的发射功率 越 高 。 基 站 k 的 权 重 In the application example 4, the weight determination method of each base station is as follows: It is assumed that the priorities of the users are represented by N1, N2, and N3, respectively, the N1 priority is the highest, the N2 is the second, and the N3 is the lowest, and the base station; t the subordinate service users have corresponding priorities. The number of users can be set to n fcl , n k2 , n k3 =l, 2, 3 ), corresponding to Nl, N2, N3 respectively. The load status of the base station is divided into levels, including four levels of overload, high, medium, and low, which can be represented by L 2 , L 3 , and L 4 , or by an integer between 0 and 100. A higher or higher value indicates that the base station expects a higher transmission power. Base station k weight
= 0.3 (^f- + -^ - + ^f-) + 0.7 T,lk G {L1; L2, L3, L4}或 lk e {0,1…: 100}; Zfc
的取值范围取决于基站负载状况的表示形式。其中, 0.6nfcl、 0.3nfc2、 0.1nfc3中 的 0.6、 0.3 和 0.1 是为了体现出 nfcl、 nk2、 nfc3的优先级高低, 因此, nkl、 nk2、 nfc3分别釆用系数 0.6、 0.3和 0.1。 同理, 还可以釆用相似的其它 系数来表示优先级的高低, 例如: 0.7nfcl、 0.2nfc2、 0.1nfc3。 此外, 在计算权 重/ ½时, 根据各基站下属服务用户各优先级对应的用户数量计算的权重乘以 系数 0.3 , 根据基站的负载状况计算的权重乘以系数 0.7 , 说明了在计算总的 权重中基站的负载状况更加重要, 其所占的百分比为 70%, 相应的根据各基 站下属服务用户各优先级对应的用户数量计算的权重所占的百分比为 30%, 所述百分比可以根据网络的实际情况或管理需要进行更改并预先设置。 为实现以上方法, 本发明还提供了一种同频干扰协调装置, 与本发明特 别相关地, 如图 9所示, 该装置包括: = 0.3 (^f- + -^ - + ^f-) + 0.7 T ,l k G {L 1; L 2 , L 3 , L 4 } or l k e {0,1...: 100}; Z fc The range of values depends on the representation of the base station load condition. Among them, 0.6, 0.3, and 0.1 of 0.6n fcl , 0.3n fc2 , and 0.1n fc3 are used to reflect the priority levels of n fcl , n k2 , and n fc3 . Therefore, n kl , n k2 , and n fc3 are respectively used. The coefficients are 0.6, 0.3 and 0.1. Similarly, similar other coefficients can be used to indicate the priority level, for example: 0.7n fcl , 0.2n fc2 , 0.1n fc3 . In addition, when calculating the weight / 1⁄2, the weight calculated according to the number of users corresponding to each priority of the service users of each base station is multiplied by a coefficient of 0.3, and the weight calculated according to the load status of the base station is multiplied by a coefficient of 0.7, indicating that the total weight is calculated. The load status of the base station is more important, and the percentage of the base station is 70%. The percentage of the weight calculated according to the number of users corresponding to the priority of the service users of each base station is 30%, and the percentage can be based on the network. The actual situation or management needs to be changed and set in advance. In order to achieve the above method, the present invention also provides a co-channel interference coordination device, and particularly relevant to the present invention, as shown in FIG. 9, the device includes:
干扰协调请求接收单元,用于接收受干扰基站发送的同频干扰协调请求; 干扰协调参数信息获取单元, 用于获取所述受干扰基站及其同频基站、 邻频基站的干扰协调参数信息, 其中所述受干扰基站的同频基站使用的频谱 与受干扰的频谱相同或交叠, 所述受干扰基站的邻频基站使用的频谱与所述 受干扰的频语相邻; The interference coordination request receiving unit is configured to receive the co-channel interference coordination request sent by the interfered base station, and the interference coordination parameter information acquiring unit is configured to acquire interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station, The spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered spectrum, and the spectrum used by the adjacent-frequency base station of the interfered base station is adjacent to the interfered frequency.
干扰协调单元, 用于根据所述干扰协调参数对所述受干扰基站及同频基 站进行干扰协调。 And an interference coordination unit, configured to perform interference coordination on the interfered base station and the same-frequency base station according to the interference coordination parameter.
优选地, 干扰协调参数信息获取单元包括: Preferably, the interference coordination parameter information acquiring unit includes:
同邻频基站确定模块, 用于根据所述同频干扰协调请求确定所述受干扰 基站的同频基站以及所述受干扰基站的邻频基站; And a neighboring frequency base station determining module, configured to determine, according to the co-frequency interference coordination request, an intra-frequency base station of the interfered base station and an adjacent-frequency base station of the interfered base station;
信息发送模块, 用于向所述受干扰基站、 所述受干扰基站的同频基站及 所述受干扰基站的邻频基站发送干扰协调参数信息请求; An information sending module, configured to send an interference coordination parameter information request to the interfered base station, the same-frequency base station of the interfered base station, and an adjacent-frequency base station of the interfered base station;
信息接收模块, 用于接收所述受干扰基站、 所述受干扰基站的同频基站 及所述受干扰基站的邻频基站反馈的干扰协调参数信息。 And an information receiving module, configured to receive interference coordination parameter information fed back by the interfered base station, the same-frequency base station of the interfered base station, and an adjacent-frequency base station of the interfered base station.
具体地, 所述同频干扰协调请求中携带所述受干扰基站受干扰频谱的中
心频点及带宽, 所述干扰协调参数信息获取单元根据所述同频干扰协调请求 中的所述中心频点及带宽确定所述受干扰基站的同频基站以及所述受干扰基 站的邻频基站。 Specifically, the co-frequency interference coordination request carries the interfered spectrum of the interfered base station a heart rate point and a bandwidth, the interference coordination parameter information obtaining unit determining, according to the center frequency point and bandwidth in the co-channel interference coordination request, an adjacent frequency base station of the interfered base station and an adjacent frequency of the interfered base station Base station.
可选地, 所述受干扰基站发送所述同频干扰协调请求的触发事件是针对 同一受干扰频谱, 受同频干扰的强度大于预设干扰强度阔值的终端相对于上 报测量结果的终端的百分比超过某个预设值, 或者受同频干扰的强度大于干 扰强度阈值的终端的数量超过某个预设值。 Optionally, the triggering event that the interfered base station sends the co-frequency interference coordination request is for the same interfered spectrum, and the terminal that is subjected to the same-frequency interference strength greater than the preset interference strength threshold is compared to the terminal that reports the measurement result. The percentage exceeds a certain preset value, or the number of terminals whose intensity of the same frequency interference is greater than the interference intensity threshold exceeds a certain preset value.
优选地, 所述受干扰基站及其同频基站的干扰协调参数信息包括当前基 站的用于确定同频基站功率分配权重的信息、 当前基站中的参考点的位置, 当前基站覆盖区域内各点可接受最大干扰水平的最小值、 当前基站的同频基 站与所述参考点之间的路损、 当前基站的天线方向图以及当前基站的当前发 射功率的上限值; Preferably, the interference coordination parameter information of the interfered base station and its co-frequency base station includes information of a current base station for determining a power allocation weight of an intra-frequency base station, a position of a reference point in a current base station, and points in a current base station coverage area. The minimum value of the maximum interference level acceptable, the path loss between the intra-frequency base station of the current base station and the reference point, the antenna pattern of the current base station, and the upper limit value of the current base station's current transmit power;
所述受干扰基站的邻频基站的干扰协调参数信息包括该邻频基站与所述 各同频基站中的参考点之间的路损、 该邻频基站的天线方向图、 邻频干扰抑 制 (ACIR ) ; The interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent base station and a reference point in the same-frequency base station, an antenna pattern of the adjacent-frequency base station, and adjacent-channel interference suppression ( ACIR ) ;
所述基站中的参考点指该基站的同频基站在该基站覆盖区域内干扰最强 的点。 The reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station.
优选地, 所述当前基站用于确定同频基站分配权重的信息包括当前基站 服务用户的优先级、 各优先级对应的用户数量和 /或基站的负载状况。 Preferably, the information used by the current base station to determine the weight allocation of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
优选地, 所述干扰协调单元包括: Preferably, the interference coordination unit comprises:
功率权重分配模块, 用于根据所述用于确定同频基站功率分配权重的信 息为所述受干扰基站及其同频基站分配功率权重; a power weight allocation module, configured to allocate power weights to the interfered base station and its co-frequency base station according to the information used to determine the power allocation weight of the same-frequency base station;
最大发射功率计算模块, 用于根据功率权重分配结果、 其他干扰协调参 数信息及受干扰基站及其同频基站的当前发射功率上限值计算下行干扰可接 受的情况下, 所述受干扰基站及其同频基站的最大发射功率; a maximum transmit power calculation module, configured to calculate, according to the power weight assignment result, other interference coordination parameter information, and the current transmit power upper limit value of the interfered base station and the same-frequency base station, that the downlink interference is acceptable, the interfered base station and The maximum transmit power of its co-frequency base station;
功率调整通知模块, 用于通知所述受干扰基站与其同频基站将发射功率 调整至小于或等于所述最大发射功率。 And a power adjustment notification module, configured to notify the interfered base station and its co-frequency base station to adjust transmit power to be less than or equal to the maximum transmit power.
本发明同频干扰协调装置还可以釆用以下方式实现, 该装置包括:
存储器, 用于存储指令; The co-channel interference coordination device of the present invention can also be implemented in the following manner, the device comprising: a memory for storing instructions;
处理器, 其与所述存储器耦合, 该处理器被配置为执行存储在所述存储 器中的指令, 其中, 所述处理器被配置为用于: 接收受干扰基站发送的同频干扰协调请求; a processor coupled to the memory, the processor being configured to execute an instruction stored in the memory, wherein the processor is configured to: receive a co-channel interference coordination request sent by the interfered base station;
获取所述受干扰基站及其同频基站、 邻频基站的干扰协调参数信息, 其 中所述受干扰基站的同频基站使用的频谱与受干扰的频语相同或交叠, 所述 受干扰基站的邻频基站使用的频谱与所述受干扰的频谱相邻; Obtaining interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station, where the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered frequency, the interfered base station The spectrum used by the adjacent frequency base station is adjacent to the interfered spectrum;
根据所述干扰协调参数对所述受干扰基站及其同频基站进行干扰协调。 如前所述, 所述受干扰基站及其同频基站的干扰协调参数信息包括当前 基站的用于确定同频基站功率分配权重的信息、当前基站中的参考点的位置 , 当前基站覆盖区域内各点可接受最大干扰水平的最小值、 当前基站的同频基 站与所述参考点之间的路损、 当前基站的天线方向图以及当前基站的当前发 射功率的上限值; Performing interference coordination on the interfered base station and its co-frequency base station according to the interference coordination parameter. As described above, the interference coordination parameter information of the interfered base station and its co-frequency base station includes information of the current base station for determining the power allocation weight of the same-frequency base station, the location of the reference point in the current base station, and the current base station coverage area. The minimum value of the maximum interference level, the path loss between the intra-frequency base station of the current base station and the reference point, the antenna pattern of the current base station, and the upper limit value of the current transmit power of the current base station;
所述受干扰基站的邻频基站的干扰协调参数信息包括该邻频基站与所述 各同频基站中的参考点之间的路损、 该邻频基站的天线方向图、 邻频干扰抑 制 (ACIR ) ; The interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent base station and a reference point in the same-frequency base station, an antenna pattern of the adjacent-frequency base station, and adjacent-channel interference suppression ( ACIR ) ;
所述基站中的参考点指该基站的同频基站在该基站覆盖区域内干扰最强 的点; The reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station;
所述当前基站用于确定同频基站分配权重的信息包括当前基站服务用户 的优先级、 各优先级对应的用户数量和 /或基站的负载状况。 The information used by the current base station to determine the allocation weight of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
在发明通过基站向中心控制节点提供其下属用于确定同频基站功率分配 权重的信息,干扰协调参数信息,对同频基站进行干扰协调。其获得好处是: 可以保证高优先级用户的服务质量, 将不同基站使用同段频谱时产生的下行 干扰控制在合理的水平, 实现小区间的同频干扰协调。 In the invention, the base station provides the central control node with information for determining the power allocation weight of the same frequency base station, interference coordination parameter information, and interference coordination with the same frequency base station. The benefits are as follows: The quality of service of high-priority users can be guaranteed, and the downlink interference generated when different base stations use the same spectrum is controlled at a reasonable level to achieve co-channel interference coordination between cells.
以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。 The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention. One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct the associated hardware, such as a read only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, or may be implemented in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.
工业实用性 本发明实施例的方法和装置, 可以基于获取的信息对同频基站的功率进 行调整, 从而降低小区间的同频干扰。
Industrial Applicability The method and apparatus of the embodiments of the present invention can adjust the power of the same-frequency base station based on the acquired information, thereby reducing co-channel interference between cells.
Claims
1、 一种同频干扰协调方法, 该方法包括: 1. A co-channel interference coordination method, the method comprising:
接收受干扰基站发送的同频干扰协调请求; Receiving a co-channel interference coordination request sent by the interfered base station;
获取所述受干扰基站及其同频基站、 邻频基站的干扰协调参数信息, 其 中所述受干扰基站的同频基站使用的频谱与受干扰的频语相同或交叠, 所述 受干扰基站的邻频基站使用的频谱与所述受干扰的频谱相邻; Obtaining interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station, where the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered frequency, the interfered base station The spectrum used by the adjacent frequency base station is adjacent to the interfered spectrum;
根据所述干扰协调参数对所述受干扰基站及其同频基站进行干扰协调。 Performing interference coordination on the interfered base station and its co-frequency base station according to the interference coordination parameter.
2、 如权利要求 1 所述的方法, 其中, 获取所述受干扰基站及其同频基 站、 邻频基站的干扰协调参数信息的步骤包括: 2. The method according to claim 1, wherein the step of acquiring interference coordination parameter information of the interfered base station, its co-frequency base station, and the adjacent frequency base station comprises:
根据所述同频干扰协调请求确定所述受干扰基站的同频基站以及所述受 干扰基站的邻频基站; Determining, by the co-channel interference coordination request, an intra-frequency base station of the interfered base station and an adjacent-frequency base station of the interfered base station;
向所述受干扰基站、 所述受干扰基站的同频基站及所述受干扰基站的邻 频基站发送干扰协调参数信息请求; And transmitting an interference coordination parameter information request to the interfered base station, the same-frequency base station of the interfered base station, and an adjacent-frequency base station of the interfered base station;
所述受干扰基站、 所述受干扰基站的同频基站及所述受干扰基站的邻频 基站反馈干扰协调参数信息。 The interfered base station, the same-frequency base station of the interfered base station, and the adjacent-frequency base station of the interfered base station feed back interference coordination parameter information.
3、 如权利要求 1或 2所述的方法, 其中, 所述同频干扰协调请求中携 带所述受干扰基站受干扰频谱的中心频点及带宽, 根据所述同频干扰协调请 求中的所述中心频点及带宽确定所述受干扰基站的同频基站以及所述受干扰 基站的邻频基站。 The method according to claim 1 or 2, wherein the co-channel interference coordination request carries a center frequency point and a bandwidth of the interfered spectrum of the interfered base station, according to the co-channel interference coordination request The center frequency and bandwidth determine the same-frequency base station of the interfered base station and the adjacent-frequency base station of the interfered base station.
4、 如权利要求 1或 2所述的方法, 其中, 所述受干扰基站发送所述同 频干扰协调请求的触发事件是针对同一受干扰频谱, 受同频干扰的强度大于 预设干扰强度阔值的终端相对于上报测量结果的终端的百分比超过某个预设 值,或者受同频干扰的强度大于干扰强度阔值的终端的数量超过某个预设值。 The method according to claim 1 or 2, wherein the triggering event of the interfering base station transmitting the co-channel interference coordination request is for the same interfered spectrum, and the strength of the same-frequency interference is greater than the preset interference intensity The percentage of the terminal of the value relative to the terminal reporting the measurement result exceeds a certain preset value, or the number of terminals whose intensity of the same frequency interference is greater than the interference intensity threshold exceeds a certain preset value.
5、 如权利要求 1 所述的方法, 其中, 所述受干扰基站及其同频基站的 干扰协调参数信息包括当前基站的用于确定同频基站功率分配权重的信息、 当前基站中的参考点的位置, 当前基站覆盖区域内各点可接受最大干扰水平
的最小值、 当前基站的同频基站与所述参考点之间的路损、 当前基站的天线 方向图以及当前基站的当前发射功率的上限值; 所述受干扰基站的邻频基站的干扰协调参数信息包括该邻频基站与所述 各同频基站中的参考点之间的路损、 该邻频基站的天线方向图、 邻频干扰抑 制 (ACIR ) ; 5. The method according to claim 1, wherein the interference coordination parameter information of the interfered base station and its co-frequency base station comprises information of a current base station for determining a power allocation weight of an intra-frequency base station, and a reference point in the current base station. Location, the maximum interference level can be accepted at each point in the current base station coverage area. The minimum value, the path loss between the intra-frequency base station of the current base station and the reference point, the antenna pattern of the current base station, and the upper limit value of the current base station's current transmit power; the interference of the adjacent base station of the interfered base station The coordination parameter information includes a path loss between the adjacent frequency base station and a reference point in the same frequency base station, an antenna pattern of the adjacent frequency base station, and adjacent channel interference suppression (ACIR);
所述基站中的参考点指该基站的同频基站在该基站覆盖区域内干扰最强 的点。 The reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station.
6、 如权利要求 5 所述的方法, 其中, 所述当前基站用于确定同频基站 功率分配权重的信息包括当前基站服务用户的优先级、 各优先级对应的用户 数量和 /或基站的负载状况。 The method according to claim 5, wherein the information used by the current base station to determine the power allocation weight of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load of the base station. situation.
7、 如权利要求 5 所述的方法, 其中, 根据所述干扰协调参数对所述受 干扰基站及其同频基站进行干扰协调的步骤包括: 7. The method according to claim 5, wherein the step of performing interference coordination on the interfered base station and its co-frequency base station according to the interference coordination parameter comprises:
根据所述用于确定同频基站功率分配权重的信息为所述受干扰基站及其 同频基站分配功率权重; And allocating power weights to the interfered base station and the same-frequency base station according to the information used to determine the power allocation weight of the same-frequency base station;
根据功率权重分配结果、 其他干扰协调参数信息及受干扰基站及其同频 基站的当前发射功率上限值计算下行干扰可接受的情况下, 所述受干扰基站 及其同频基站的最大发射功率; The maximum transmit power of the interfered base station and its co-frequency base station when the downlink interference is acceptable according to the power weight assignment result, the other interference coordination parameter information, and the current transmit power upper limit value of the interfered base station and the same-frequency base station ;
通知所述受干扰基站与其同频基站将发射功率调整至小于或等于所述最 大发射功率。 The victim base station and its co-frequency base station are notified to adjust the transmit power to be less than or equal to the maximum transmit power.
8、 一种同频干扰协调装置, 该装置包括: 8. A co-channel interference coordination device, the device comprising:
干扰协调请求接收单元, 其设置为: 接收受干扰基站发送的同频干扰协 调请求; 干扰协调参数信息获取单元, 其设置为: 获取所述受干扰基站及其同频 基站、 邻频基站的干扰协调参数信息, 其中所述受干扰基站的同频基站使用 的频谱与受干扰的频谱相同或交叠, 所述受干扰基站的邻频基站使用的频谱 与所述受干扰的频语相邻; The interference coordination request receiving unit is configured to: receive the co-channel interference coordination request sent by the interfered base station; and the interference coordination parameter information acquiring unit is configured to: acquire interference of the interfered base station, the same-frequency base station, and the adjacent-frequency base station Coordinating the parameter information, wherein the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered spectrum, and the spectrum used by the adjacent-frequency base station of the interfered base station is adjacent to the interfered frequency;
干扰协调单元, 其设置为: 根据所述干扰协调参数对所述受干扰基站及
同频基站进行干扰协调。 An interference coordination unit, configured to: the interfered base station according to the interference coordination parameter and The same frequency base station performs interference coordination.
9、 如权利要求 8所述的装置,其中,干扰协调参数信息获取单元包括: 同邻频基站确定模块, 设置为: 根据所述同频干扰协调请求确定所述受 干扰基站的同频基站以及所述受干扰基站的邻频基站; The apparatus according to claim 8, wherein the interference coordination parameter information acquiring unit comprises: a same neighboring frequency base station determining module, configured to: determine, according to the co-channel interference coordination request, the same-frequency base station of the interfered base station and An adjacent frequency base station of the interfered base station;
信息发送模块, 设置为: 向所述受干扰基站、 所述受干扰基站的同频基 站及所述受干扰基站的邻频基站发送干扰协调参数信息请求; The information sending module is configured to: send an interference coordination parameter information request to the interfered base station, the same-frequency base station of the interfered base station, and an adjacent-frequency base station of the interfered base station;
信息接收模块, 设置为: 接收所述受干扰基站、 所述受干扰基站的同频 基站及所述受干扰基站的邻频基站反馈的干扰协调参数信息。 The information receiving module is configured to: receive the interference coordination parameter information fed back by the interfered base station, the same-frequency base station of the interfered base station, and the adjacent-frequency base station of the interfered base station.
10、 如权利要求 8所述的装置, 其中, 所述受干扰基站及其同频基站的 干扰协调参数信息包括当前基站的用于确定同频基站功率分配权重的信息、 当前基站中的参考点的位置, 当前基站覆盖区域内各点可接受最大干扰水平 的最小值、 当前基站的同频基站与所述参考点之间的路损、 当前基站的天线 方向图以及当前基站的当前发射功率的上限值; 10. The apparatus according to claim 8, wherein the interference coordination parameter information of the interfered base station and its co-frequency base station comprises information of a current base station for determining a power allocation weight of an intra-frequency base station, and a reference point in a current base station. The location, the minimum value of the maximum interference level acceptable at each point in the current coverage area of the base station, the path loss between the intra-frequency base station of the current base station and the reference point, the antenna pattern of the current base station, and the current transmit power of the current base station. Upper limit;
所述受干扰基站的邻频基站的干扰协调参数信息包括该邻频基站与所述 各同频基站中的参考点之间的路损、 该邻频基站的天线方向图、 邻频干扰抑 制 (ACIR ) ; The interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent base station and a reference point in the same-frequency base station, an antenna pattern of the adjacent-frequency base station, and adjacent-channel interference suppression ( ACIR ) ;
所述基站中的参考点指该基站的同频基站在该基站覆盖区域内干扰最强 的点; The reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station;
所述当前基站用于确定同频基站分配权重的信息包括当前基站服务用户 的优先级、 各优先级对应的用户数量和 /或基站的负载状况。 The information used by the current base station to determine the allocation weight of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
11、 如权利要求 10所述的装置, 其中, 所述干扰协调单元包括: 功率权重分配模块, 设置为: 根据所述用于确定同频基站功率分配权重 的信息为所述受干扰基站及其同频基站分配功率权重; The device according to claim 10, wherein the interference coordination unit comprises: a power weight allocation module, configured to: determine, according to the information for determining a power allocation weight of an intra-frequency base station, the victim base station The same frequency base station allocates power weights;
最大发射功率计算模块, 设置为: 根据功率权重分配结果、 其他干扰协 调参数信息及受干扰基站及其同频基站的当前发射功率上限值计算下行干扰 可接受的情况下, 所述受干扰基站及其同频基站的最大发射功率; The maximum transmit power calculation module is configured to: set, according to the power weight assignment result, other interference coordination parameter information, and the current transmit power upper limit value of the interfered base station and the same-frequency base station, that the downlink interference is acceptable, the interfered base station And the maximum transmit power of the same frequency base station;
功率调整通知模块, 设置为: 通知所述受干扰基站与其同频基站将发射
功率调整至小于或等于所述最大发射功率。 a power adjustment notification module, configured to: notify the interfered base station and its co-frequency base station to transmit The power is adjusted to be less than or equal to the maximum transmit power.
12、 一种同频干扰协调装置, 该装置包括: 12. A co-channel interference coordination device, the device comprising:
存储器, 其设置为: 存储指令; a memory, which is set to: store instructions;
处理器, 其设置为: 与所述存储器耦合, 该处理器被配置为执行存储在 所述存储器中的指令, 其中, 所述处理器被配置为: a processor, configured to: coupled to the memory, the processor configured to execute instructions stored in the memory, wherein the processor is configured to:
接收受干扰基站发送的同频干扰协调请求; Receiving a co-channel interference coordination request sent by the interfered base station;
获取所述受干扰基站及其同频基站、 邻频基站的干扰协调参数信息, 其 中所述受干扰基站的同频基站使用的频谱与受干扰的频语相同或交叠, 所述 受干扰基站的邻频基站使用的频谱与所述受干扰的频谱相邻; Obtaining interference coordination parameter information of the interfered base station, the same-frequency base station, and the adjacent-frequency base station, where the spectrum used by the same-frequency base station of the interfered base station is the same as or overlaps with the interfered frequency, the interfered base station The spectrum used by the adjacent frequency base station is adjacent to the interfered spectrum;
根据所述干扰协调参数对所述受干扰基站及其同频基站进行干扰协调。 Performing interference coordination on the interfered base station and its co-frequency base station according to the interference coordination parameter.
13、 如权利要求 12 所述的装置, 其中, 所述受干扰基站及其同频基站 的干扰协调参数信息包括当前基站的用于确定同频基站功率分配权重的信息、 当前基站中的参考点的位置, 当前基站覆盖区域内各点可接受最大干扰水平 的最小值、 当前基站的同频基站与所述参考点之间的路损、 当前基站的天线 方向图以及当前基站的当前发射功率的上限值; 13. The apparatus according to claim 12, wherein the interference coordination parameter information of the interfered base station and its co-frequency base station comprises information of a current base station for determining a power allocation weight of an intra-frequency base station, and a reference point in a current base station. The location, the minimum value of the maximum interference level acceptable at each point in the current coverage area of the base station, the path loss between the intra-frequency base station of the current base station and the reference point, the antenna pattern of the current base station, and the current transmit power of the current base station. Upper limit;
所述受干扰基站的邻频基站的干扰协调参数信息包括该邻频基站与所述 各同频基站中的参考点之间的路损、 该邻频基站的天线方向图、 邻频干扰抑 制 (ACIR ) ; The interference coordination parameter information of the adjacent base station of the interfered base station includes a path loss between the adjacent base station and a reference point in the same-frequency base station, an antenna pattern of the adjacent-frequency base station, and adjacent-channel interference suppression ( ACIR ) ;
所述基站中的参考点指该基站的同频基站在该基站覆盖区域内干扰最强 的点; The reference point in the base station refers to a point where the same-frequency base station of the base station has the strongest interference in the coverage area of the base station;
所述当前基站用于确定同频基站分配权重的信息包括当前基站服务用户 的优先级、 各优先级对应的用户数量和 /或基站的负载状况。
The information used by the current base station to determine the allocation weight of the same-frequency base station includes the priority of the current base station serving user, the number of users corresponding to each priority, and/or the load status of the base station.
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