CN102088780B - Method and base station for avoiding signal interference in hierarchical network - Google Patents
Method and base station for avoiding signal interference in hierarchical network Download PDFInfo
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Abstract
The invention discloses a method and a base station for avoiding signal interference in a hierarchical network. The method comprises the following steps that: a first base station determines a second base station required to be subjected to signal interference avoiding; the first base station acquires position information of user equipment belonging to the first base station and position information of the second base station which is relative to the first base station; the first base station acquires time frequency resource information of the user equipment belonging to the first base station; the first base station determines the user equipment belonging to the first base station in the direction of the second base station according to the position information of the user equipment belonging to the first base station and position information of the second base station; the first base station determines the time frequency resource information used by the user equipment belonging to the first base station in the direction of the second base station; and the first base station instructs the second base station to avoid scheduling the time frequency resource information. By the method and the base station, interference can be avoided.
Description
Technical field
The present invention relates to mobile communication technology, method and the base station of particularly avoiding signal to disturb in a kind of hierarchical network.
Background technology
In mobile communications network, along with the growing requirement to data speed and covering, traditional provides the method for access can not meet the demands with macro base station, adopt cell splitting, and (Home/Pico/Femto/Relay, base station, base station, household base station/Pico cell formula base station/femtocell/midsequent) can be good at addressing this is that in hot zones or indoor deployment some lower powered base stations.This lower powered base station is a kind of base station equipment that is applied under family's indoor environment, working environment or other little overlay environment, can make operator that high data rate, attractive business more cheaply are provided more.
Fig. 1 is layering networking schematic diagram, take Home eNB (home evolved base station) as example, distinguish in order to represent in figure, UE under the base station is designated MUE (Marco UE), Home eNB is designated HeNB, UE under HeNB is designated HUE (Home UE), and the basic structure of layering networking as shown in the figure.Can find out from the structure of top hierarchical network, have two kinds of main interference types from the direction of propagation hierarchical network:
Descending interference is descending: that is to say the descending interference that always can be subject in Marco UE and Home UE (family subscriber equipment) reception from Marco eNB (grand evolution base station) and Home eNB (home evolved base station).
Uplink interference is up: that is to say the uplink interference that always can be subject in Marco eNB and Home eNB reception from Marco UE and Home UE.
The method that existing interference is avoided is mainly to divide and the angle of power control is disturbed alleviating of avoiding or disturb from running time-frequency resource, and its major programme is as follows:
1, the mode by static state/semi-static FDM realizes disturbing and avoids:
Fig. 2 is static state/semi-static FDM (Frequency Division Multiplexing, frequency division multiplexing) frequency diagram is avoided in interference, as shown in the figure, by distributing different running time-frequency resources for Marco eNB (being expressed as MeNB in figure) with Home eNB (being expressed as HeNB in figure), make the UE in Marco eNB and HeNB take different running time-frequency resources, thereby realize avoiding of interference.
The advantage of this scheme is to realize simply, but its deficiency is: resource utilization is lower.
2, the method for controlling by power realizes alleviating of interference:
Mutual by between Marco eNB and HeNB, perhaps the measurement of Radio Link obtains the information of corresponding up/down interference, thereby the method for controlling by power, adjust the method for the reflection power of Marco eNB or HeNB and carry out alleviating of descending interference, and the transmitting power of adjustment UE realizes alleviating of uplink interference.
The advantage of this method is to have versatility, but its deficiency is: this is a kind of method of passive interference mitigation, simultaneously can't guaranteed performance.
3, the mode of FDM+ power configuration:
Fig. 3 is that the frequency diagram with interference mitigation is avoided in the interference of FDM+ power configuration, as shown in the figure, by running time-frequency resource that to be Marco eNB different with the HeNB configuration and the grade of the transmitting power on different running time-frequency resources, thereby realize avoiding and alleviating of descending interference.
This method is a kind of improved procedure with respect to the mode of static state/semi-static FDM, but its deficiency is: the lower problem of FDM own resources utilization is still arranged.
4, dynamic FDM+ICIC (Inter-Cell Interference Coordinate, Inter-Cell Interference Coordination):
Mutual by between Marco eNB and HeNB, the perhaps method of the measurement of Radio Link is known the disturbance regime on each running time-frequency resource of other residential quarter, the method by scheduling and power are controlled realizes alleviating and avoiding of interference.
This method is a kind of improved procedure with respect to the mode of static state/semi-static FDM, but its deficiency is: further do not utilize avoiding that the spatial domain disturbs, interference mitigation and the performance avoided are subject to the time delay of Signalling exchange in the ICIC process and the cycle of measurement simultaneously.
Summary of the invention
Technical problem solved by the invention has been to provide method and the base station of avoiding signal to disturb in a kind of hierarchical network.
A kind of avoid signal to disturb in hierarchical network method is provided in the embodiment of the present invention, has comprised the steps:
The first base station is determined to carry out signal and is disturbed the second base station of avoiding;
The first base station obtains the user equipment (UE) that belongs to the first base station and the second base station with respect to the positional information of the first base station;
The first base station obtains the UE running time-frequency resource information that belongs to the first base station;
The UE that belongs to the first base station on the direction of the second base station is determined according to the positional information that belongs to the UE of the first base station and the second base station in the first base station;
The running time-frequency resource information that the UE that belongs to the first base station on the direction of the second base station uses is determined in the first base station;
This running time-frequency resource information is avoided dispatching in the first indication the second base station, base station.
A kind of avoid signal to disturb in hierarchical network method is provided in the embodiment of the present invention, has comprised the steps:
The second base station receives the indication of the first base station, the running time-frequency resource information that need avoid when described indication comprises scheduling;
The running time-frequency resource that uses indication to comprise when the scheduling running time-frequency resource, is avoided in the second base station in accordance with the instructions.
A kind of base station is provided in the embodiment of the present invention, has comprised:
The base station determination module is used for determining to carry out signal and disturbs the first base station of avoiding;
Position information acquisition module is used for obtaining the user equipment (UE) that belongs to this base station and the first base station with respect to the positional information of this base station;
The resource information acquisition module is used for obtaining the UE running time-frequency resource information that belongs to this base station;
The resource information determination module, be used for according to belonging to the UE of this base station and the positional information of the first base station is determined to determine the running time-frequency resource information that the UE that belongs to this base station on the direction of the first base station uses after the UE that belongs to this base station on the direction of the first base station;
Indicating module is used to indicate the first base station and avoids dispatching this running time-frequency resource information.
A kind of base station is provided in the embodiment of the present invention, has comprised:
Receiver module is used for receiving the indication of other base stations, the running time-frequency resource information that need avoid when described indication comprises scheduling;
Scheduler module is used in accordance with the instructions avoiding the running time-frequency resource that uses indication to comprise when the scheduling running time-frequency resource.
Beneficial effect of the present invention is as follows:
In the invention process, consider the situation that the base station relative position is relatively fixing, disturb based on the base station directional information avoid the time, obtain subordinate's UE and the positional information of other base stations, also obtain the positional information of other base stations; Then, determine according to UE and other base station position informations the running time-frequency resource that meeting be used on other base station directions, thereby indicate other base stations to avoid the running time-frequency resource that use the base station when the scheduling running time-frequency resource, realized disturbing and avoided.
Description of drawings
Fig. 1 is layering networking schematic diagram in background technology;
Fig. 2 is that frequency diagram is avoided in the interference of static state/semi-static FDM in background technology;
Fig. 3 is that the frequency diagram with interference mitigation is avoided in the interference of FDM+ power configuration in background technology;
Fig. 4 is the method one implementing procedure schematic diagram of avoiding signal to disturb in the embodiment of the present invention in hierarchical network;
Fig. 5 is interference avoidance scheme schematic diagram in spatial domain in the embodiment of the present invention;
Fig. 6 is the method two implementing procedure schematic diagram of avoiding signal to disturb in the embodiment of the present invention in hierarchical network;
Fig. 7 is base station one structural representation in the embodiment of the present invention;
Fig. 8 is base station two structural representations in the embodiment of the present invention.
Embodiment
The technical scheme that prior art adopts is mainly to have provided from running time-frequency resource and power control angle the scheme of avoiding with interference mitigation of disturbing, consider that low power base station is as a base-station node that newly adds system, it should reduce the impact on existing system as far as possible so, thereby the technical scheme that provides in the embodiment of the present invention is from avoiding that the low power base station side is disturbed, obviously, this programme is a kind ofly can effectively strengthen the scheme avoid effect of disturbing.Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
Fig. 4 is the method one implementing procedure schematic diagram of avoiding signal to disturb in hierarchical network, as shown in the figure, can comprise the steps: when avoiding signal to disturb
Step 401, the first base station are determined to carry out signal and are disturbed the second base station of avoiding;
Step 402, the first base station obtain the user equipment (UE) that belongs to the first base station and the second base station with respect to the positional information of the first base station;
Step 403, the first base station obtain the UE running time-frequency resource information that belongs to the first base station;
Step 404, the first base station are determined the UE that belongs to the first base station on the direction of the second base station according to the positional information that belongs to the UE of the first base station and the second base station;
The running time-frequency resource information that the UE that belongs to the first base station on the direction of the second base station uses is determined in step 405, the first base station;
This running time-frequency resource information is avoided dispatching in step 406, first indication the second base station, base station.
In enforcement, step 402 there is no inevitable sequential requirement with step 403.
In step 406, take the statistics of situation or disturbance regime for up/down row running time-frequency resource by each residential quarter oneself, the statistical information that can simultaneously up/down row running time-frequency resource be taken situation or disturbance regime passes to other residential quarter alternately by the minizone, user when scheduling in each residential quarter is by the different running time-frequency resource of distribution, thus the coordination of disturbing.At LTE (Long Term Evolution, Long Term Evolution) (the Inter-Cell Interference Coordinate of the ICIC between small area, Inter-Cell Interference Coordination) relevant information is mainly to transmit by X2 interface alternately, provided in 3GPP TS 36.423 about the load information interaction of minizone and described, wherein mainly comprised information as shown in the table.
| IE/Group Name | Prese nce | Range | IE type and reference | Semantics description | Critica lity | Assigned Criticality |
| Message Type | M | 9.2.13 | YES | ignore | ||
| Cell Information | M | YES | ignore | |||
| ＞ |
1 to maxC elline NB | EACH | ignore | |||
| ＞＞Cell ID | M | ECGI 9.2. 14 | Id of the source cell | - | - | |
| ＞＞UL Interference Overload Indication | O | 9.2.17 | - | - | ||
| ＞＞UL High Interference Information | 0 to maxC elline NB | - | - | |||
| ＞＞＞Target Cell ID | M | ECGI 9.2. 14 | Id of the cell for which the HII is meant | - | - | |
| ＞＞＞UL High Interference Indication | M | 9.2.18 | - | - | ||
| ＞＞Relative | O | 9.2.19 | - | - |
| Narrowband Tx Power(RNTP) |
By the principle of technical scheme provided by the invention as can be known, the interference that is not limited between macro base station and low power base station is avoided, and equally also can be applied between macro base station and macro base station, the interference between low power base station and low power base station, between macro base station and low power base station etc. avoids.The below mainly take the first base station as macro base station, the second base station provided implementation as low power base station as example.
Fig. 5 is spatial domain interference avoidance scheme schematic diagram.For the convenience of describing, in figure, the running time-frequency resource of hypothesis Marco eNB is f, the running time-frequency resource that MeNB takies in Home eNB1 (being illustrated as HeNB1) direction scope is f1, the running time-frequency resource that MeNB takies in Home eNB2 (being illustrated as HeNB2) direction scope is f2, and wherein running time-frequency resource f1 and running time-frequency resource f2 can be the same or different.What wherein f-f1 represented is other running time-frequency resource that does not comprise the f1 running time-frequency resource, and what f-f2 represented is other running time-frequency resource that does not comprise the f2 running time-frequency resource.
In enforcement, Marco eNB determines Marco UE on the HeNB direction according to the positional information with respect to Marco eNB of Marco UE and HeNB, then determine the situation that the running time-frequency resource of Marco UE takies, at last with its notice HeNB, make it avoid dispatching these running time-frequency resources, avoid thereby realize disturbing.MUE in figure (Marco UE) refers to belong to the UE of Marco eNB, and HUE (Home UE) refers to belong to the UE of HeNB.
In enforcement, positional information comprises direction and coverage, thereby determines the scope of a direction.That is, positional information can comprise one of following information or its combination: geographical coordinate, coverage, orientation angle, channel information, PMI (Precooding matrix indicator, pre-coding matrix information).Concrete, positional information can for:
1), geographical coordinate and/or coverage;
2), orientation angle and/or coverage;
3), channel information etc., the PMI that for example can carry out the estimation of the angle of arrival and represent directional information according to channel information.
In enforcement, when obtaining the second base station with respect to the positional information of the first base station in the first base station, can comprise:
Obtain the positional information of the second base station from network side;
Under this mode, the position of network terminal known the second base station can be by the method notice of indication.
Or, obtain the positional information of the second base station by the mode of eating dishes without rice or wine to measure.
Under this mode, can be by the mode of eating dishes without rice or wine to measure, the signal in upward signal, random access procedure for example, and the channel estimation results of the second base station feedback is determined the positional information of the second base station.
Obtain the positional information of the second base station from network side, under this mode, the first base station can obtain by the indication of network the geographical location information of low power base station, thereby make the MeNB can be according to the estimation of positional information travel direction information, mainly can be applied to the residential quarter that operator disposes, for example: pico, hotzone, Relay;
Or, configuring to obtain the positional information of the second base station by Operation and Maintenance, under this mode, its positional information can be geographical coordinate and coverage;
Or, obtain alternately the positional information of the second base station by S 1 or X2 interface and the second base station, under this mode, its positional information can be any one in above-mentioned three kinds of positional informations, wherein for Relay, Signalling exchange between its base station is always undertaken by wireless channel, and its information is by the transmission of eating dishes without rice or wine;
Or, measure to obtain the positional information of the second base station by eating dishes without rice or wine, under this mode, its positional information can be orientation angle and coverage or channel information etc.
The mode of obtaining the positional information of the second base station by the mode of eating dishes without rice or wine to measure can comprise:
In concrete enforcement, can determine the positional information of the second base station according to the upward signal of the second base station, under this mode, MeNB can pass through the estimation of the upward signal travel direction information of low power base station, for example: Relay;
Or, determine the positional information of the second base station according to the signal in the second base station initial access process, under this mode, low power base station is when start, carry out a process that is similar to initial access, thereby make the MeNB can be according to the estimation of up signal travel direction information;
Or, determine the positional information of the second base station according to the channel estimation results of the second base station feedback, described channel estimation results is that the result of channel estimating is carried out in the second base station to the reference signal of the first base station, and wherein the result of channel estimating is transmitted by S1 interface or X2 interface or Radio Link.Under this mode, low power base station is carried out channel estimating by the reference signal to MeNB, simultaneously with the result feedback of channel estimating to MeNB, thereby make the MeNB can be according to the estimation of the channel information travel direction information of low power base station feedback, this mode goes for all deployment scenario, comprising: Pico, hotzone, Relay, femto and HeNB etc.
In enforcement, be when the mutual base station type of free oral sex is arranged in the second base station, can by after upward signal is measured, estimate to obtain positional information according to the angle of arrival; Or, can obtain positional information by descending channel information and/or the PMI that directional information is carried in measurement, for example obtain by broadband P MI.
Concrete, for the Relay base station, its mode can be divided into following several:
A), the method can the angle of arrival estimated of its positional information macro base station obtains by the Relay upward signal is measured, if its uplink signal strength surpasses some strength simultaneously, needs to consider that its direction is disturbed avoids;
B) or measure descending channel information etc., directly feedback channel information, perhaps feed back a mode of carrying the PMI of angle information by calculating.
Seen from the above description, Marco eNB need to know that HeNB is with respect to the positional information of Marco eNB, can obtain by the Signalling exchange between Marco eNB and HeNB for this directional information, concrete directional information can be that HeNB is with respect to the angle information of Marco eNB, or the geographical location information of HeNB, thereby Marco eNB can be known by calculating the directional information of current HeNB.Simultaneously have a mutual low power base station of wireless channel for Relay is this, can measure its angle of arrival or feed back an out of Memory parameter that can obtain by calculating by upward signal.For example: PMI information or carry the channel information of directional information.
In enforcement, when avoiding dispatching this running time-frequency resource information in first indication the second base station, base station, can comprise:
Indicate the second base station running time-frequency resource information by wire link or Radio Link by the network terminal configuration information;
Or, indicate alternately the second base station running time-frequency resource information by S1 or X2 interface.
Concrete, when indicating alternately the second base station running time-frequency resource information by S1 or X2 interface, can pass through RNTP (Relative Narrowband Tx power indicator, Relative Narrowband TX Power indication) and/or the indication of DL-HII (DL-High Interference Indicator, descending high interference indication) indicate the second base station running time-frequency resource information.
For dynamic situation, in indicate the second base station running time-frequency resource information by the indicating mode of DL-HII, DL-HII and UL-HII (UL-High Interference Indicator, the indication of up high interference) implication is consistent, is all the frequency resource that needs interference coordination/avoid in the indication current base station.
Concrete, when Marco eNB need to indicate the frequency spectrum of current each HeNB to take situation, the mode of indication can be as follows:
Adopt static state/semi-static spectrum division, network terminal configuration information or indicate alternately by S1 or X2 interface.
Dynamic frequency is divided, the situation that takies by RNTP indication information indication HeNB running time-frequency resource, for this lower powered base station of HeNB, macro base station can be indicated alternately by S1 or X2 interface, wherein for Relay, Signalling exchange between its base station is always undertaken by wireless channel, and its information is by the transmission of eating dishes without rice or wine.
In enforcement, when determining that in the first base station need carry out signal disturbs the second base station of avoiding, can also comprise:
The second base station that the first base station is determined is pre-configured according to coverage planning definite;
Or, the second base station that the first base station is determined is the base station of reporting position information and running time-frequency resource information, this base station is at the RS that records the first base station (reference signals, reference signal) RSRP of signal (Reference Signal Received Power, when Reference Signal Received Power) intensity surpasses threshold value, reporting position information and running time-frequency resource information.
Concrete, need the indication running time-frequency resource the target BS set definite mode can:
1), under definite mode of Operation and Maintenance configuration scope, it is the pre-configured adjacent base station of coverage planning.
2), low power base station is by measuring macro base station signal strength signal intensity (RSRP), the RSRP intensity that records macro base station RS signal surpasses the macro base station set of certain limit, sends its positional information to the set of corresponding macro base station.Initiatively initiated the information interaction of report position information by low power base station.
In enforcement, when obtaining Marco UE with respect to the positional information of the first base station in the first base station, can comprise:
The angle of arrival of measuring Marco UE by upward signal obtains positional information; Or the PMI information of feeding back by MarcoUE and/or the channel information that carries directional information obtain positional information.
Concrete, Marco eNB need to be known Marco UE with respect to the directional information of Marco eNB, mainly can measure its angle of arrival by upward signal, and feeds back an out of Memory parameter that can obtain by calculating by UE.For example: PMI information or carry the channel information of directional information.
By above-mentioned enforcement, Marco eNB has known the directional information of relevant HeNB, and the directional information of Marco UE and the running time-frequency resource that takies, Marco eNB determines according to the directional information of Marco UE, HeNB the running time-frequency resource that the Marco UE in the HeNB direction takies, then with its notice HeNB, like this, HeNB just can avoid these running time-frequency resources when the scheduling running time-frequency resource, thereby reaches the purpose of avoiding signal.For example, if Marco UE is positioned near or the direction of HeNB, need so to avoid HeNB and Marco UE to take identical running time-frequency resource (as the MUE2 in Fig. 5 and MUE3) by scheduling, if Marco UE is away from HeNB or be in outside the direction of HeNB, MarcoeNB can dispatch the down time-frequency resource (as the MUE1 in Fig. 5) of the multiplexing current HeNB of Marco UE so.
By above-mentioned enforcement as seen, MeNB need to be according to the directional information of low power base station, the directional information of MUE, and the frequency resource information that takies of MUE, determine MeNB need to take which frequency resource (these frequency resource information can be the results of a statistics) in current low power base station direction scope, then indicate current low power base station to avoid using these running time-frequency resources when scheduling.The namely f1 in Fig. 5, f2.
Accordingly, also provide the method for avoiding signal to disturb in the second base station side in the embodiment of the present invention, the below describes.
Fig. 6 is the method two implementing procedure schematic diagram of avoiding signal to disturb in hierarchical network, comprises the steps:
Step 601, the second base station receive the indication of the first base station, the running time-frequency resource information that need avoid when described indication comprises scheduling;
The running time-frequency resource that uses indication to comprise when the scheduling running time-frequency resource, is avoided in step 602, the second base station in accordance with the instructions.
In enforcement, when receiving the indication of the first base station in the second base station, can comprise:
Receive indication by wire link or Radio Link by the network terminal configuration information;
Or, receive alternately indication by S1 or X2 interface.
In enforcement, when receiving alternately indication by S1 or X2 interface, can receive indication by the indication of RNTP and/or descending high interference indication DL-HII.
In enforcement, can further include:
When the second base station surpasses threshold value in the RSRP of the RS that records the first base station intensity, to the first base station reporting position information and running time-frequency resource information.
By above-mentioned enforcement as seen, HeNB, need to avoid dispatching on these frequencies according to the indication information that obtains when HeNB dispatches as far as possible.
In concrete enforcement, as shown in Figure 5, MeNB need to notify HeNB1, and in the direction scope of HeNB1, the frequency resource that MeNB takies is f1, and HeNB1 should avoid dispatching the resource of f1 as far as possible so, and its resource that preferentially takies is f-f1.The resource that corresponding HeNB2 preferentially takies is f-f2.
The below describes with example again.
Execution mode one:
The present embodiment will describe as an example of the home-use low power base station of HeNB class example.The present embodiment has been described the mode that HeNB initiatively sends information, namely, the second base station that the first base station obtains is the base station of reporting position information and running time-frequency resource information, when this base station surpasses threshold value in the RSRP intensity of the RS signal that records the first base station, and reporting position information and running time-frequency resource information.Can be as follows in concrete enforcement:
1), HeNB can by measuring the RS signal of current Marco eNB, can be known current channel information.
2), HeNB can be according to the RSRP intensity of the RS signal of current all base stations that measure, record macro base station RSRP signal strength signal intensity over the macro base station set of certain limit, HeNB needs initiatively initiation for the report of current macro base station set, and positional information, coverage information and the frequency of report HeNB itself take situation information.Description in the content of specifying information such as top technical scheme.
Execution mode two:
The present embodiment will have the mutual low power base station of eating dishes without rice or wine take Relay etc. and describe as example.The present embodiment has been described the mode that Marco eNB obtains positional information, that is, when obtaining the second base station with respect to the positional information of the first base station in the first base station, measure by eating dishes without rice or wine and obtain positional information.Can be as follows in concrete enforcement:
1), Marco eNB can measure its angle of arrival according to the up wireless signal of current Relay.
2), the Marco eNB of Relay ownership can be according to the mutual acquisition of the space interface signaling information for the coverage of Relay.
3), other Marco eNB can obtain the positional information of Relay, the information of coverage alternately by the Marco eNB with the Relay ownership.
Execution mode three:
The low power base station of the Pico class that the present embodiment will be disposed take operator planning describes as example.The present embodiment has been described the mode that Marco eNB obtains positional information,, when obtaining the second base station with respect to the positional information of the first base station in the first base station, configures to obtain positional information by Operation and Maintenance that is; Can be as follows in concrete enforcement:
1), Marco eNB can obtain by operation maintenance center geographical location information and the coverage information of Pico.
2), operation maintenance center can be according to the planning situation of network, the geographical location information of Pico and coverage information are issued need to be disturbed the base station (adjacent base station) of avoiding.
Based on same inventive concept, a kind of base station also is provided in the embodiment of the present invention, a kind of avoid signal to disturb in the principle of dealing with problems due to this base station and hierarchical network method is similar, so the enforcement of this base station can referring to the enforcement of method, repeat part and repeat no more.
Fig. 7 is base station one structural representation, as shown in the figure, can comprise in the base station:
Base station determination module 701 is used for determining to carry out signal and disturbs the first base station of avoiding;
Position information acquisition module 702 is used for obtaining the user equipment (UE) that belongs to this base station and the first base station with respect to the positional information of this base station;
Resource information acquisition module 703 is used for obtaining the UE running time-frequency resource information that belongs to this base station;
Resource information determination module 704, be used for according to belonging to the UE of this base station and the positional information of the first base station is determined to determine the running time-frequency resource information that the UE that belongs to this base station on the direction of the first base station uses after the UE that belongs to this base station on the direction of the first base station;
Indicating module 705 is used to indicate the first base station and avoids dispatching this running time-frequency resource information.
In enforcement, position information acquisition module can comprise: the first acquiring unit, and/or second acquisition unit, wherein:
The first acquiring unit is used for obtaining the positional information of the first base station from network side;
Second acquisition unit is used for obtaining the positional information of the first base station by the mode of eating dishes without rice or wine to measure.
In enforcement, the first acquiring unit can also be further used for configuring to obtain the positional information of the first base station by Operation and Maintenance; Or, obtain alternately the positional information of the first base station by S1 or X2 interface and the first base station; Or, measure to obtain the positional information of the first base station by eating dishes without rice or wine.
In enforcement, second acquisition unit can also be further used for determining according to the upward signal of the first base station the positional information of the first base station; Or, determine the positional information of the first base station according to the signal in the first base station initial access process; Or, determine the positional information of the first base station according to the channel estimation results of the first base station feedback, described channel estimation results is that the result of channel estimating is carried out in the first base station to the reference signal of this base station, and wherein the result of channel estimating is transmitted by S1 interface or X2 interface or Radio Link.
In enforcement, it is when the mutual base station type of free oral sex is arranged that second acquisition unit can also be further used in the first base station, after upward signal is measured, estimates to obtain positional information according to the angle of arrival; Or the descending channel information and/or the pre-coding matrix information PMI that carry directional information by measurement obtain positional information.
Position information acquisition module can also be further used for obtaining the positional information that comprises one of following information or its combination: geographical coordinate, coverage, orientation angle, channel information, PMI.
In enforcement, indicating module can also be further used for indicating the first base station by wire link or Radio Link by the network terminal configuration information when indicating the first base station to avoid dispatching this running time-frequency resource information; Or, indicate alternately the first base station by S1 or X2 interface.
In enforcement, indicating module can also be further used for when indicating the first base station alternately by S1 or X2 interface, indicates the first base station by the indication of RNTP and/or descending high interference indication DL-HII.
In enforcement, the base station determination module can also be further used for when determining that need carry out signal disturbs the first base station of avoiding, and is pre-configured according to coverage planning definite; Or the first base station of determining is the base station of reporting position information and running time-frequency resource information, when this base station surpasses threshold value in the Reference Signal Received Power RSRP of the reference signal RS that records this base station intensity, and reporting position information and running time-frequency resource information.
Fig. 8 is base station two structural representations, as shown in the figure, can comprise in the base station:
In enforcement, receiver module can also be further used for receiving indication by wire link or Radio Link by the network terminal configuration information when receiving the indication of other base stations; Or, receive alternately indication by S1 or X2 interface.
In enforcement, receiver module can also be further used for when receiving alternately indication by S1 or X2 interface, indicates the indication of DL-HII to receive indication by RNTP and/or descending high interference.
In enforcement, can further include in the base station:
In enforcement, the base station is low power base station preferably.
For the convenience of describing, the each several part of the above device is divided into various modules with function or the unit is described respectively.Certainly, can realize the function of each module or unit in same or a plurality of softwares or hardware when enforcement is of the present invention.
Can be found out by above-mentioned execution mode, in technical scheme provided by the invention, by other base stations in the acquisition hierarchical network of network side or the mutual mode of eating dishes without rice or wine with respect to the directional information of Marco eNB, and Marco eNB makes progress to the running time-frequency resource of affiliated UE use the party, thereby can indicate in hierarchical network other base stations to avoid using these running time-frequency resources, reach and disturb the purpose of avoiding.
Technical scheme provided by the invention is considered in the relatively more fixing situation of base station relative position, has provided a kind of avoiding method based on the base station directional information, also can be based on effective enhancing of the interference avoidance method of FDM simultaneously.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect fully.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the present invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of realizing in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby be provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction of carrying out on computer or other programmable devices.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (20)
1. the method for avoiding signal to disturb in a hierarchical network is characterized in that, comprises the steps:
The first base station is determined to carry out signal and is disturbed the second base station of avoiding;
The first base station obtains the user equipment (UE) that belongs to the first base station with respect to the positional information of the first base station, and the second base station is with respect to the positional information of the first base station;
The first base station obtains the UE running time-frequency resource information that belongs to the first base station;
The first base station is according to belonging to the UE of the first base station with respect to the positional information of the first base station, and the UE that belongs to the first base station on the direction of the second base station is determined with respect to the positional information of the first base station in the second base station;
The running time-frequency resource information that the UE that belongs to the first base station on the direction of the second base station uses is determined in the first base station;
This running time-frequency resource information is avoided dispatching in the first indication the second base station, base station.
2. the method for claim 1, is characterized in that, when obtaining the second base station with respect to the positional information of the first base station in the first base station, comprising:
Obtain the positional information of the second base station from network side;
Or, obtain the positional information of the second base station by the mode of eating dishes without rice or wine to measure.
3. method as claimed in claim 2, is characterized in that, obtains the positional information of the second base station from network side, comprising:
Configure to obtain the positional information of the second base station by Operation and Maintenance;
Or, obtain alternately the positional information of the second base station by S1 or X2 interface and the second base station;
Or, measure to obtain the positional information of the second base station by eating dishes without rice or wine.
4. method as claimed in claim 2, is characterized in that, obtains the positional information of the second base station by the mode of eating dishes without rice or wine to measure, and comprising:
Determine the positional information of the second base station according to the upward signal of the second base station;
Or, determine the positional information of the second base station according to the signal in the second base station initial access process;
Or, determine the positional information of the second base station according to the channel estimation results of the second base station feedback, described channel estimation results is that the result of channel estimating is carried out in the second base station to the reference signal of the first base station, and wherein the result of channel estimating is transmitted by S1 interface or X2 interface or Radio Link.
5. method as claimed in claim 4, is characterized in that, described the second base station is when the mutual base station type of free oral sex is arranged,
The positional information of angle of arrival estimation acquisition the second base station is carried out by after the upward signal of the second base station is measured in the first base station according to the upward signal of the second base station;
Or the first base station obtains the positional information of the second base station by the descending channel information that carries directional information and/or the pre-coding matrix information PMI that measures the second base station feedback.
6. the method for claim 1, is characterized in that, when obtaining UE with respect to the positional information of the first base station in the first base station, comprising:
The angle of arrival of measuring UE by upward signal obtains positional information;
Or the PMI information of feeding back by UE and/or the channel information that carries directional information obtain positional information.
7. described method as arbitrary in claim 1 to 6, is characterized in that, described positional information comprises one of following information or its combination: geographical coordinate, coverage, orientation angle, channel information, PMI.
8. the method for claim 1, is characterized in that, when avoiding dispatching this running time-frequency resource information in first indication the second base station, base station, comprising:
Indicate the second base station by wire link or Radio Link by the network terminal configuration information;
Or, indicate alternately the second base station by S1 or X2 interface.
9. method as claimed in claim 8, is characterized in that, when indicating the second base station alternately by S1 or X2 interface, indicates the indication of RNTP and/or descending high interference indication DL-HH to indicate the second base station by Relative Narrowband TX Power.
10. the method for claim 1, is characterized in that, determines to carry out signal in the first base station when disturbing the second base station of avoiding, comprising:
The second base station that the first base station is determined is pre-configured according to coverage planning definite;
Or the second base station that the first base station is determined is the base station of reporting position information and running time-frequency resource information, when this base station surpasses threshold value in the Reference Signal Received Power RSRP of the reference signal RS that records the first base station intensity, and reporting position information and running time-frequency resource information.
11. a base station is characterized in that, comprising:
The base station determination module is used for determining to carry out signal and disturbs the first base station of avoiding;
Position information acquisition module be used for obtaining the user equipment (UE) that belongs to this base station with respect to the positional information of this base station, and the first base station is with respect to the positional information of this base station;
The resource information acquisition module is used for obtaining the UE running time-frequency resource information that belongs to this base station;
The resource information determination module, be used for according to belonging to the UE of this base station with respect to the positional information of this base station, and first the base station with respect to the positional information of this base station, determine to determine the running time-frequency resource information that the UE that belongs to this base station on the direction of the first base station uses after the UE that belongs to this base station on the direction of the first base station;
Indicating module is used to indicate the first base station and avoids dispatching this running time-frequency resource information.
12. base station as claimed in claim 11 is characterized in that, position information acquisition module comprises: the first acquiring unit, and/or second acquisition unit, wherein:
The first acquiring unit is used for obtaining the positional information of the first base station from network side;
Second acquisition unit is used for obtaining the positional information of the first base station by the mode of eating dishes without rice or wine to measure.
13. base station as claimed in claim 12 is characterized in that, the first acquiring unit is further used for configuring to obtain the positional information of the first base station by Operation and Maintenance; Or, obtain alternately the positional information of the first base station by S1 or X2 interface and the first base station; Or, measure to obtain the positional information of the first base station by eating dishes without rice or wine.
14. base station as claimed in claim 12 is characterized in that, second acquisition unit is further used for determining according to the upward signal of the first base station the positional information of the first base station; Or, determine the positional information of the first base station according to the signal in the first base station initial access process; Or, determine the positional information of the first base station according to the channel estimation results of the first base station feedback, described channel estimation results is that the result of channel estimating is carried out in the first base station to the reference signal of this base station, and wherein the result of channel estimating is transmitted by S1 interface or X2 interface or Radio Link.
15. base station as claimed in claim 14, it is characterized in that, it is when the mutual base station type of free oral sex is arranged that second acquisition unit is further used in the first base station, after the upward signal of the first base station is measured, carry out the positional information of angle of arrival estimation acquisition the first base station according to the upward signal of the first base station; Or, obtain the positional information of the first base station by the descending channel information that carries directional information and/or the pre-coding matrix information PMI that measures the first base station feedback.
16. base station as claimed in claim 11 is characterized in that, position information acquisition module is further used for when obtaining UE with respect to the positional information of this base station, and the angle of arrival of measuring UE by upward signal obtains positional information; Or the PMI information of feeding back by UE and/or the channel information that carries directional information obtain positional information.
17. described base station as arbitrary in claim 11 to 16 is characterized in that position information acquisition module is further used for obtaining the positional information that comprises one of following information or its combination: geographical coordinate, coverage, orientation angle, channel information, PMI.
18. base station as claimed in claim 11 is characterized in that, indicating module is further used for indicating the first base station by wire link or Radio Link by the network terminal configuration information when indicating the first base station to avoid dispatching this running time-frequency resource information; Or, indicate alternately the first base station by S1 or X2 interface.
19. base station as claimed in claim 18, it is characterized in that, indicating module is further used for when indicating the first base station alternately by S1 or X2 interface, indicates the indication of RNTP and/or descending high interference indication DL-HII to indicate the first base station by Relative Narrowband TX Power.
20. base station as claimed in claim 11 is characterized in that, the base station determination module is further used for when determining that need carry out signal disturbs the first base station of avoiding, and is pre-configured according to coverage planning definite; Or the first base station of determining is the base station of reporting position information and running time-frequency resource information, when this base station surpasses threshold value in the Reference Signal Received Power RSRP of the reference signal RS that records this base station intensity, and reporting position information and running time-frequency resource information.
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| CN200910241473.XA CN102088780B (en) | 2009-12-03 | 2009-12-03 | Method and base station for avoiding signal interference in hierarchical network |
| PCT/CN2010/079267 WO2011066787A1 (en) | 2009-12-03 | 2010-11-30 | Method and base station for avoiding signal interference in a layered network |
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| CN103650562B (en) * | 2011-05-16 | 2019-04-30 | 瑞典爱立信有限公司 | The related method and arrangement of interference between system |
| US20140087719A1 (en) * | 2011-05-16 | 2014-03-27 | Telefonaktiebolaget L M Ericsson (Publ) | Method and Arrangement Related to Interference Between Systems |
| US8831619B2 (en) * | 2011-07-21 | 2014-09-09 | Alcatel Lucent | Method of sharing information between base stations associated with different network technologies and the base stations |
| CN102932836B (en) * | 2011-08-12 | 2017-11-10 | 邳州高新区生物医药研究院有限公司 | A kind of switching handling method and system |
| CN103002452B (en) * | 2011-09-14 | 2016-08-10 | 华为技术有限公司 | For reducing the method for inter-cell signal interference, base station and wireless communication system |
| CN102291785B (en) * | 2011-09-21 | 2014-08-20 | 电信科学技术研究院 | Method and equipment for resource coordination between cells |
| KR20150041574A (en) * | 2013-10-04 | 2015-04-16 | (주)휴맥스 홀딩스 | Method for small cell interference avoidance on the LTE dual connectivity |
| CN104640119B (en) * | 2013-11-06 | 2019-01-01 | 中国移动通信集团公司 | Frequency using method, device and relevant device in heterogeneous network |
| CN104780546B (en) * | 2014-01-15 | 2018-06-05 | 普天信息技术研究院有限公司 | A kind of method of dynamic interference coordination |
| CN111246390A (en) * | 2014-08-07 | 2020-06-05 | 华为技术有限公司 | Method and device for reporting user equipment location information |
| WO2020102971A1 (en) * | 2018-11-20 | 2020-05-28 | Qualcomm Incorporated | Cross link interference detection systems and methods |
| CN115412940B (en) * | 2022-08-29 | 2024-04-09 | 中国联合网络通信集团有限公司 | Uplink interference positioning method, device and storage medium |
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