WO2011055841A1 - 無線基地局及び通信制御方法 - Google Patents
無線基地局及び通信制御方法 Download PDFInfo
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- WO2011055841A1 WO2011055841A1 PCT/JP2010/069916 JP2010069916W WO2011055841A1 WO 2011055841 A1 WO2011055841 A1 WO 2011055841A1 JP 2010069916 W JP2010069916 W JP 2010069916W WO 2011055841 A1 WO2011055841 A1 WO 2011055841A1
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- 238000012545 processing Methods 0.000 claims description 17
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
- H04L5/0035—Resource allocation in a cooperative multipoint environment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0073—Allocation arrangements that take into account other cell interferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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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 a radio base station that performs processing for causing the other radio base station to control interference received from a radio terminal connected to the other radio base station, and a communication control method for the radio base station.
- LTE Long Term Evolution
- OI Overload Indicator
- one radio base station measures the interference power in the uplink direction from neighboring cells in units of radio resources called resource blocks (RBs), and determines that “the interference is small” according to the interference power. ”,“ Interference is large ”, and“ Interference is very large ”are transmitted to the neighboring radio base stations.
- the neighboring radio base stations that have received the ternary information can control the transmission power (uplink transmission power) in the connected radio terminal using the ternary information. For example, if the neighboring radio base station receives information that the interference power is “very high”, the radio base station controls the radio terminal so as to reduce the transmission power in the uplink direction. Reduce interference power in the upstream direction.
- an object of the present invention is to provide a radio base station and a communication control method capable of preventing a reduction in communication capacity of the entire radio communication system.
- the present invention has the following features.
- the first feature of the present invention is to allow the other radio base station to control interference received from a radio terminal (radio terminal 2B) connected to another radio base station (second radio base station 1B).
- a radio base station (first radio base station 1A) that performs processing, an interference power measurement unit (interference power measurement unit 150) that measures interference power received from the radio terminal, and a load of radio communication in the own radio base station Information related to the interference power measured by the interference power measurement unit based on the load of the wireless communication measured by the communication load measurement unit (communication load measurement unit 152)
- An interference information generation unit (interference information generation unit 154) that generates interference information
- a transmission unit transmission processing unit 156) that transmits the interference information generated by the interference information generation unit to the other radio base station.
- Such a radio base station not only measures the interference power received from radio terminals connected to other radio base stations, but also measures the load of radio communication in its own radio base station, and based on the load of the radio communication
- interference information which is information related to the interference power
- other radio base stations can control the transmission power of the radio terminal in consideration of the load of radio communication in the radio base station that is the transmission source of the interference information, and the transmission power is reduced more than necessary. As a result, it is possible to prevent a reduction in communication capacity of the entire wireless communication system.
- the second feature of the present invention is summarized in that the interference information generation unit generates the interference information indicating that the interference power is smaller as the load of the wireless communication is smaller.
- a third feature of the present invention is that the interference information generation unit generates the interference information based on a value obtained by multiplying a value indicating the load of the wireless communication by a value indicating the interference power.
- the interference information generation unit is configured such that a value indicating the load of the wireless communication is equal to or greater than a first threshold value, and a value indicating the interference power is equal to or greater than a second threshold value. Furthermore, the gist is to generate the interference information indicating that the interference is large.
- the interference power measurement unit measures interference power in a radio resource in a predetermined frequency band
- the interference information generation unit includes interference information corresponding to the radio resource in the predetermined frequency band.
- the gist is to generate.
- the interference power measurement unit measures interference power for each minimum allocation unit for radio resources allocated to the radio terminal, and the interference information generation unit is allocated to the radio terminal.
- the gist is to generate interference information for each minimum allocation unit for radio resources.
- a seventh feature of the present invention is a communication control method in a radio base station that performs processing for causing the other radio base station to control interference received from a radio terminal connected to the other radio base station, A step of measuring interference power received by the radio base station from the radio terminal, a step of measuring the radio communication load in the radio base station, and the radio base station measuring the radio Generating interference information, which is information related to the measured interference power, based on a communication load; and transmitting the generated interference information to the other radio base station by the radio base station It is a summary to provide.
- An eighth feature of the present invention is a communication control method for a radio base station that performs uplink communication by allocating radio resource blocks to radio terminals in its own cell, wherein the radio base station performs interference in the uplink.
- FIG. 1 is an overall schematic configuration diagram of a radio communication system according to an embodiment of the present invention.
- FIG. 2 is a configuration diagram of the first radio base station according to the embodiment of the present invention.
- FIG. 3 is a configuration diagram of the second radio base station according to the embodiment of the present invention.
- FIG. 4 is a flowchart showing an operation of the first radio base station according to the embodiment of the present invention.
- FIG. 5 is a flowchart showing an operation of the second radio base station according to the embodiment of the present invention.
- FIG. 1 is an overall schematic configuration diagram of a radio communication system 10 according to an embodiment of the present invention.
- the wireless communication system 10 has, for example, a configuration based on LTE Release 9 which is a 3.9th generation (3.9G) mobile phone system and LTE-Advanced which is positioned as a 4th generation (4G) mobile phone system.
- LTE Release 9 which is a 3.9th generation (3.9G) mobile phone system
- LTE-Advanced which is positioned as a 4th generation (4G) mobile phone system.
- the radio communication system 10 includes a first radio base station 1A that forms a cell 3A and a second radio base station 1B that forms a cell 3B.
- Cell 3B is a neighbor cell of cell 3A.
- the radius of the cell 3A and the cell 3B is, for example, about several hundreds [m].
- a radio terminal 2A existing in the cell 3A is connected to the first radio base station 1A, and a radio terminal 2B existing in the cell 3B is connected to the second radio base station 1B.
- 1st radio base station 1A and 2nd radio base station 1B are installed in the place based on the station location design which the communication carrier considered the interference between cells.
- the first radio base station 1A and the second radio base station 1B are connected by a dedicated line (not shown) or the like, and an X2 connection that is a logical transmission path in the transport layer is established.
- the first radio base station 1A allocates one or a plurality of uplink and downlink resource blocks (RB: Resource Block), which are radio resources in the minimum allocation unit, to the radio terminal 2A, and between the radio terminal 2A and the radio terminal 2A Wireless communication with Similarly, the second radio base station 1B allocates one or a plurality of uplink and downlink resource blocks to the radio terminal 2B, and performs radio communication with the radio terminal 2B.
- RB Resource Block
- the uplink used for the wireless communication (the link from the wireless terminal 2A to the first wireless base station 1A, , Referred to as “first uplink”) and used for wireless communication when the second wireless base station 1B and the wireless terminal 2B are connected to perform wireless communication.
- first uplink the link from the wireless terminal 2A to the first wireless base station 1A, , Referred to as “first uplink”
- second uplink the frequency band of the resource block corresponding to the uplink
- the radio terminal 2B The first radio base station 1A performing radio communication with the radio terminal 2A is subject to interference by radio signals transmitted to the two radio base stations 1B using the second uplink. It made.
- the first radio base station 1A when the first radio base station 1A receives interference from the radio terminal 2B, the first radio base station 1A transmits the radio terminal 2B to the second radio base station 1B. Requesting power control, the second radio base station 1B reduces the interference by controlling the transmission power of the radio terminal 2B in response to the request.
- FIG. 2 is a block diagram showing a configuration of the first radio base station 1A.
- the first radio base station 1A includes a control unit 102, a storage unit 103, a wired communication unit 104, a radio communication unit 105, and an antenna unit 107.
- the control unit 102 is configured by a CPU, for example, and controls various functions of the first radio base station 1A.
- the storage unit 103 is configured by a memory, for example, and stores various information used for control and the like in the first radio base station 1A.
- the wired communication unit 104 transmits and receives data to and from the second wireless base station 1B.
- the wireless communication unit 105 is configured using, for example, a radio frequency (RF) circuit, a baseband (BB) circuit, and the like, and transmits and receives a wireless signal to and from the wireless terminal 2A via the antenna unit 107.
- the wireless communication unit 105 performs encoding and modulation of a transmission signal and demodulation and decoding of a reception signal. Further, the wireless communication unit 105 outputs received data obtained by demodulating and decoding the received signal to the control unit 102.
- the wireless communication unit 105 includes an interference power measurement unit 150.
- the control unit 102 includes a communication load measurement unit 152, an interference information generation unit 154, and a transmission processing unit 156.
- the interference power measurement unit 150 in the radio communication unit 105 receives the second radio signal from the radio terminal 2B to the second radio base station 1B while receiving a radio signal transmitted from the radio terminal 2A using the first uplink.
- the power of interference received by the radio signal transmitted using the uplink is measured.
- the interference power measurement unit 150 uses, as a radio signal, a power of a radio signal component transmitted from the radio terminal 2B to the second radio base station 1B using the second uplink among the received radio signals. Measurement is performed for each of one or a plurality of resource blocks allocated to the terminal 2A.
- the communication load measuring unit 152 in the control unit 102 determines the ratio of the actual traffic volume (traffic volume ratio) to the maximum traffic volume that can be processed in the first radio base station 1A, and the radio communication in the first radio base station 1A. Calculate as the load. Specifically, the communication load measuring unit 152 measures the amount of transmission data output from the control unit 102 to the wireless communication unit 105. Further, the communication load measuring unit 152 calculates the traffic amount ratio by dividing the measured transmission data amount by the predetermined maximum downlink traffic amount that can be processed. Alternatively, the communication load measuring unit 152 measures the amount of received data output from the wireless communication unit 105 to the control unit 102. Further, the communication load measuring unit 152 calculates a traffic volume ratio by dividing the measured received data volume by a predetermined maximum traffic volume that can be processed in the uplink direction.
- the maximum downstream traffic volume that can be processed and the maximum upstream traffic volume that can be processed are stored in the storage unit 103. Furthermore, the communication load measuring unit 152 increases the calculated traffic volume ratio as the throughput required in the wireless communication between the first radio base station 1A and the radio terminal 2A and the required data volume increase. You may correct
- the interference information generation unit 154 in the control unit 102 multiplies each interference power value for each resource block measured by the interference power measurement unit 150 by the traffic amount ratio measured by the communication load measurement unit 152.
- the interference information generation unit 154 generates binary interference information “0” and “1” as OI (OverloadOverIndicator). Specifically, for each of the multiplication values for each resource block, the interference information generation unit 154 uses “1” indicating that interference is large as the interference information when the multiplication value is equal to or greater than the first threshold value. If the multiplication value is less than the first threshold, “0” indicating that the interference is small is generated as the interference information.
- the first threshold value is stored in the storage unit 103 in advance.
- the transmission processing unit 156 in the control unit 102 is a transmission source of a radio signal included in reception data corresponding to a radio signal transmitted from the radio terminal 2B to the second radio base station 1B using the second uplink.
- the identification information of the radio terminal 2B and the identification information of the second radio base station 1B that is the transmission destination are extracted.
- the transmission processing unit 156 adds the identification information of the resource block corresponding to the interference information and the extracted identification information of the wireless terminal 2B to the interference information for each resource block generated by the interference information generation unit 154. Append.
- the transmission processing unit 156 sets the transmission destination of the interference information for each resource block in the extracted identification information of the second radio base station 1B, and interference information with the identification information of the resource block and the identification information of the radio terminal 2B Is transmitted to the second radio base station 1B via the wired communication unit 104.
- FIG. 3 is a block diagram showing the configuration of the second radio base station 1B.
- the second radio base station 1B includes a control unit 112, a storage unit 113, a wired communication unit 114, a radio communication unit 115, and an antenna unit 117.
- the control unit 112 is constituted by a CPU, for example, and controls various functions provided in the second radio base station 1B.
- the storage unit 113 is configured by a memory, for example, and stores various information used for control and the like in the second radio base station 1B.
- the wired communication unit 114 transmits and receives data to and from the first wireless base station 1A.
- the wireless communication unit 115 is configured using, for example, a radio frequency (RF) circuit, a baseband (BB) circuit, or the like, and transmits and receives a wireless signal to and from the wireless terminal 2B via the antenna unit 117. .
- the wireless communication unit 115 performs encoding and modulation of the transmission signal and demodulation and decoding of the reception signal. Further, the wireless communication unit 115 outputs received data obtained by demodulating and decoding the received signal to the control unit 112.
- the control unit 112 includes a reception processing unit 160 and a wireless terminal transmission power control unit 162.
- the reception processing unit 160 in the control unit 112 receives the interference information for each resource block from the first radio base station 1A via the wired communication unit 114.
- the wireless terminal transmission power control unit 162 in the control unit 112 controls the transmission power of the wireless terminal 2B based on the interference information for each resource block received by the reception processing unit 160. Specifically, the wireless terminal transmission power control unit 162 controls transmission power based on the identification information of the wireless terminal 2B received by the reception processing unit 160 and added to the interference information for each resource block. The target wireless terminal 2B is determined. Next, when the interference information is “1”, the radio terminal transmission power control unit 162 generates a transmission power reduction request including the identification information of the resource block added to the interference information.
- the wireless terminal transmission power control unit 162 transmits the generated transmission power reduction request to the wireless terminal 2B via the wireless communication unit 115 and the antenna unit 117.
- the wireless terminal 2B reduces the transmission power for the resource block corresponding to the resource block identification information added to the transmission power reduction request.
- FIG. 4 is a flowchart showing the operation of the first radio base station 1A.
- the interference power measurement unit 150 in the radio communication unit 105 receives a radio signal transmitted from the radio terminal 2A using the first uplink, while receiving a radio signal from the radio terminal 2B.
- the power of interference received by the radio signal transmitted to the 1B using the second uplink is measured for each resource block allocated to the radio terminal 2A.
- step S102 the communication load measuring unit 152 in the control unit 102 calculates the ratio of the actual traffic volume (traffic volume ratio) to the maximum traffic volume that can be processed in the first radio base station 1A.
- step S103 the interference information generation unit 154 in the control unit 102 multiplies each interference power value for each resource block by the traffic amount ratio measured by the communication load measurement unit 152.
- step S104 the interference information generation unit 154 in the control unit 102 generates interference information for each resource block corresponding to each multiplication value for each resource block.
- step S105 the transmission processing unit 156 in the control unit 102 transmits the interference information for each resource block to the second radio base station 1B.
- FIG. 5 is a flowchart showing the operation of the second radio base station 1B.
- the reception processing unit 160 in the control unit 112 receives the interference information for each resource block from the first radio base station 1A.
- step S202 the radio terminal transmission power control unit 162 in the control unit 112 controls the transmission power of the radio terminal 2B based on the received interference information for each resource block.
- the first radio base station 1A interferes with a radio signal transmitted from the radio terminal 2B to the second radio base station 1B using the second uplink. Is measured for each of one or a plurality of resource blocks allocated to the radio terminal 2A, and the traffic amount ratio in the first radio base station 1A is calculated. Furthermore, the first radio base station 1A multiplies each interference power value for each resource block by the traffic amount ratio measured by the communication load measurement unit 152, and corresponds to each multiplication value for each resource block. Interference information for each resource block is generated and transmitted to the second radio base station 1B.
- the second radio base station 1B receives the interference information for each resource block from the first radio base station 1A, and performs radio communication based on the interference information for each resource block.
- the transmission power of the terminal 2B is controlled.
- the transmission power at the radio terminal 2B is controlled more than necessary at the radio terminal 2B by controlling not only the interference power at the first radio base station 1A but also the radio communication load. It is possible to prevent a reduction in the communication capacity of the entire wireless communication system 10 due to the reduction.
- the first radio base station 1A generates the interference information by comparing the value obtained by multiplying the traffic amount ratio and the interference power value in the first radio base station 1A with the threshold value.
- the interference information generation method considering the communication load is not limited to this.
- the interference information generation unit 154 in the control unit 102 indicates that the interference is large when the interference power value is greater than or equal to a third threshold and the traffic volume ratio is greater than or equal to the fourth threshold. 1 "is generated as interference information, and when the interference power value is less than the third threshold value and the traffic volume ratio is at least one less than the fourth threshold value," 0 "indicating that the interference is small is interfered. It may be generated as information.
- the third and fourth threshold values are stored in the storage unit 103.
- the interference information may not be a binary value.
- the interference information generation unit 154 in the control unit 102 in the first radio base station 1A may generate a value obtained by multiplying the interference power value and the traffic amount ratio as the interference information.
- the interference information is information indicating that the smaller the traffic amount ratio, in other words, the smaller the interference of the radio communication load in the first radio base station 1A.
- the radio terminal transmission power control unit 162 in the control unit 112 in the second radio base station 1B generates a transmission power reduction request such that the transmission power reduction rate increases as the interference information value increases. To the wireless terminal 2B.
- the first radio base station 1A measures the interference power for each resource block, and further generates and transmits interference information.
- the interference of all resource blocks allocated to the radio terminal 2A An average value of power may be calculated, and one piece of interference information corresponding to the average value of the interference power may be generated and transmitted.
- the second radio base station 1B controls the transmission power of the radio terminal 2B based on one piece of interference information, in other words, interference information corresponding to all resource blocks allocated to the radio terminal 2A.
- the load of the radio communication is not limited to the traffic volume ratio in the first radio base station 1A, the resource block usage rate in the first radio base station 1A, the traffic volume itself in the first radio base station 1A, the first radio It may be a processing load associated with wireless communication in the base station 1A.
- the radio communication system 10 is configured based on LTE Release 9 or LTE-Advanced, but may be configured based on other communication standards.
- the radio base station and communication control method of the present invention can prevent a reduction in communication capacity of the entire radio communication system, and are useful as a radio base station and communication control method.
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Abstract
Description
(1.1)無線通信システムの全体概略構成
図1は、本発明の実施形態に係る無線通信システム10の全体概略構成図である。無線通信システム10は、例えば、第3.9世代(3.9G)携帯電話システムであるLTE Release9 や、第4世代(4G)携帯電話システムとして位置づけられているLTE-Advancedに基づく構成を有する。
図2は、第1無線基地局1Aの構成を示すブロック図である。図2に示すように、第1無線基地局1Aは、制御部102、記憶部103、有線通信部104、無線通信部105及びアンテナ部107を有する。
図3は、第2無線基地局1Bの構成を示すブロック図である。図3に示すように、第2無線基地局1Bは、制御部112、記憶部113、有線通信部114、無線通信部115及びアンテナ部117を有する。
(2.1)第1無線基地局1Aの動作
図4は、第1無線基地局1Aの動作を示すフローチャートである。ステップS101において、無線通信部105内の干渉電力測定部150は、無線端末2Aから第1上りリンクを用いて送信される無線信号を受信している間に、無線端末2Bから第2無線基地局1Bへ第2上りリンクを用いて送信される無線信号によって受ける干渉の電力を、無線端末2Aに割り当てられたリソースブロック毎に測定する。
図5は、第2無線基地局1Bの動作を示すフローチャートである。ステップS201において、制御部112内の受信処理部160は、第1無線基地局1Aからのリソースブロック毎の干渉情報を受信する。
本実施形態における無線通信システム10では、第1無線基地局1Aは、無線端末2Bから第2無線基地局1Bへ第2上りリンクを用いて送信される無線信号によって受ける干渉の電力を、無線端末2Aに割り当てられた1又は複数のリソースブロック毎に測定するとともに、第1無線基地局1Aにおけるトラフィック量比率を算出する。更に、第1無線基地局1Aは、リソースブロック毎の干渉電力値のそれぞれに、通信負荷測定部152によって測定されたトラフィック量比率を乗算し、当該リソースブロック毎の乗算値のそれぞれに対応する、リソースブロック毎の干渉情報を生成して、第2無線基地局1Bへ送信する。
上記のように、本発明は実施形態によって記載したが、この開示の一部をなす論述及び図面はこの発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施形態、実施例及び運用技術が明らかとなる。
Claims (8)
- 他の無線基地局に接続する無線端末から受ける干渉を、前記他の無線基地局に制御させるための処理を行う無線基地局であって、
前記無線端末から受ける干渉電力を測定する干渉電力測定部と、
自無線基地局における無線通信の負荷を測定する通信負荷測定部と、
前記通信負荷測定部により測定された前記無線通信の負荷に基づいて、前記干渉電力測定部により測定された前記干渉電力に関連する情報である干渉情報を生成する干渉情報生成部と、
前記干渉情報生成部により生成された前記干渉情報を前記他の無線基地局へ送信する送信部と
を備える無線基地局。 - 前記干渉情報生成部は、前記無線通信の負荷が小さいほど、干渉電力が小さいことを示す前記干渉情報を生成する請求項1に記載の無線基地局。
- 前記干渉情報生成部は、前記無線通信の負荷を示す値と、前記干渉電力を示す値とを乗算した値に基づいて、前記干渉情報を生成する請求項1に記載の無線基地局。
- 前記干渉情報生成部は、前記無線通信の負荷を示す値が第1の閾値以上であり、且つ、前記干渉電力を示す値が第2の閾値以上である場合に、干渉が大きいことを示す前記干渉情報を生成する請求項1に記載の無線基地局。
- 前記干渉電力測定部は、所定の周波数帯域の無線リソースにおける干渉電力を測定し、
前記干渉情報生成部は、前記所定の周波数帯域の無線リソースに対応する干渉情報を生成する請求項1に記載の無線基地局。 - 前記干渉電力測定部は、無線端末に割り当てられた無線リソースについて最小割り当て単位毎に干渉電力を測定し、
前記干渉情報生成部は、前記無線端末に割り当てられた無線リソースについて最小割り当て単位毎に干渉情報を生成する請求項5に記載の無線基地局。 - 他の無線基地局に接続する無線端末から受ける干渉を、前記他の無線基地局に制御させるための処理を行う無線基地局の通信制御方法であって、
前記無線基地局が、前記無線端末から受ける干渉電力を測定するステップと、
前記無線基地局が、自無線基地局における無線通信の負荷を測定するステップと、
前記無線基地局が、測定された前記無線通信の負荷に基づいて、測定された前記干渉電力に関連する情報である干渉情報を生成するステップと、
前記無線基地局が、生成された前記干渉情報を前記他の無線基地局へ送信するステップと
を備える通信制御方法。 - 無線リソースブロックを自セル内の無線端末に割り当てて上りリンクの通信を行う無線基地局の通信制御方法であって、
前記無線基地局が、前記上りリンクにおいて干渉を受けている無線リソースブロックを示す干渉情報を、他の無線基地局へ送信する干渉情報送信ステップを含み、
前記干渉情報は、
前記無線基地局における無線通信の負荷に基づいて生成されることを特徴とする通信制御方法。
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EP2501167A1 (en) | 2012-09-19 |
US20120231746A1 (en) | 2012-09-13 |
KR20120066071A (ko) | 2012-06-21 |
JP5259833B2 (ja) | 2013-08-07 |
US9026166B2 (en) | 2015-05-05 |
CN102598750A (zh) | 2012-07-18 |
JPWO2011055841A1 (ja) | 2013-03-28 |
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