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WO2015024211A1 - Procédé et dispositif de coordination de brouillage - Google Patents

Procédé et dispositif de coordination de brouillage Download PDF

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Publication number
WO2015024211A1
WO2015024211A1 PCT/CN2013/081941 CN2013081941W WO2015024211A1 WO 2015024211 A1 WO2015024211 A1 WO 2015024211A1 CN 2013081941 W CN2013081941 W CN 2013081941W WO 2015024211 A1 WO2015024211 A1 WO 2015024211A1
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WO
WIPO (PCT)
Prior art keywords
rbs
cell
base station
power reduction
reduction ratio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/081941
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English (en)
Chinese (zh)
Inventor
夏伟娟
胡军
钱颖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201380001577.8A priority Critical patent/CN103733666A/zh
Priority to PCT/CN2013/081941 priority patent/WO2015024211A1/fr
Publication of WO2015024211A1 publication Critical patent/WO2015024211A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365—Power headroom reporting

Definitions

  • the present invention relates to the field of communication systems, and in particular, to a method and apparatus for interference coordination. Background technique
  • inter-cell interference occurs when adjacent cells multiplex the same frequency resources.
  • Current ICI control technologies include: interference randomization technology, interference cancellation Inter-Cell Interference Coordination (ICIC) Among them, ICIC technology has the best control effect on ICI.
  • the frequency band is first divided into a plurality of frequency reuse sets, and then different frequency reuse sets are configured for the edge user equipments of the neighboring cells, so that the edge user equipments of the neighboring cells are multiplexed. Different frequency resources, thereby reducing interference to edge user equipment in neighboring cells.
  • the central network element needs to obtain the interference of each cell in the entire network according to the number of user equipments in each cell and the interference received by each user equipment, and according to the Interference conditions select the optimal frequency band configuration mode for cell band configuration, which results in high implementation complexity of ICI control through the ICIC technology.
  • the division of the frequency reuse set will cause additional signals. The overhead is reduced, resulting in reduced system efficiency.
  • the embodiment of the invention provides a method and a device for interference coordination, which can solve the problem of high complexity when performing ICI control by using the existing ICIC technology.
  • the technical solution used in the embodiments of the present invention is:
  • an embodiment of the present invention provides a method for interference coordination, including:
  • the first base station acquires a power reduction ratio of the M resource blocks RB that the first cell performs information transmission,
  • the M is a positive integer
  • the first cell is a cell managed by the first base station; according to the power reduction ratio, the first base station determines a power reduction from the M RBs of the first cell.
  • N RBs, N is a positive integer less than or equal to M;
  • the first base station performs information transmission by using the N RBs that are processed by the first cell, so that the second base station schedules edge user equipments on the N RBs corresponding to the second cell, and performs information transmission, where
  • the second cell is a cell managed by the second base station, where the first cell and the second cell are adjacent to each other, and the N RBs corresponding to the second cell are the same as the first cell.
  • the RBs of the reduced power N RB frequencies are consistent.
  • the ratio of power reduction of the M resource blocks RB that the first base station obtains information transmission by the first cell includes:
  • the first base station acquires a power reduction ratio of the M RBs of the first cell according to a proportion of edge user equipments in the second cell.
  • the determining, by the first base station, the The N RBs that determine the power reduction in the M RBs include:
  • N RBs of reduced power from the M RBs of the first cell Determining, by the first base station, N RBs of reduced power from the M RBs of the first cell, according to the power reduction ratio and the frequency of the M RBs respectively being low to high; or Determining, by the first base station, N RBs of reduced power from the M RBs of the first cell according to the descending power ratio and a sequence of frequencies corresponding to the M respective RBs being high to low; or And determining, by the first base station, N RBs of reduced power from the M RBs of the first cell according to the power reduction ratio.
  • the After determining, by the base station, N RBs of reduced power from the M RBs of the first cell includes:
  • the device transmits information.
  • an apparatus for interference coordination including:
  • An obtaining unit configured to acquire a power reduction ratio of M resource blocks RBs for performing information transmission by the first cell, where M is a positive integer, the first cell is a cell managed by the first base station, and a determining unit is configured to: Determining, according to the power reduction ratio, N RBs of reduced power from the M RBs of the first cell, where N is a positive integer less than or equal to M;
  • a transmitting unit configured to perform information transmission by using the N RBs that are processed by the first cell to reduce power, so that the second base station schedules edge user equipments on the N RBs corresponding to the second cell, and performs information transmission,
  • the second cell is a cell managed by the second base station, where the first cell and the second cell are adjacent to each other, and the N RBs corresponding to the second cell are the same as the first cell.
  • the RBs of the reduced power N RB frequencies are consistent.
  • the acquiring unit is further configured to acquire, according to the load information of the first cell, a power reduction ratio of the M RBs of the first cell; The proportion of the edge user equipment in the second cell is obtained, and the ratio of the power reduction of the M RBs in the first cell is obtained.
  • the determining unit is further configured to respectively correspond to the M RB according to the power reduction ratio Determining the N RBs of the reduced power from the M RBs of the first cell in an order of the frequency from low to high; or the frequency corresponding to the power reduction ratio and the M RBs respectively being high to low a sequence of determining, according to the power reduction ratio, N RBs of reduced power from the M RBs of the first cell; or randomly determining power reduction from the M RBs of the first cell according to the power reduction ratio N HB.
  • the device further includes: a sending unit;
  • the sending unit is configured to send the frequency position information of the N RBs of the reduced power to the second base station, so that the second base station schedules the N RBs corresponding to the second cell Edge user equipment and information transmission.
  • an embodiment of the present invention provides a method for interference coordination, including:
  • the centralized controller obtains a ratio of power reduction of the M resource blocks RBs that are transmitted by the first cell, where M is a positive integer, the first cell is a cell managed by the first base station, and the first base station is the centralized a base station controlled by the controller;
  • N is a positive integer less than or equal to M
  • the centralized controller instructs the first base station to perform information transmission by using the N RBs after the first cell power reduction processing, so that the second base station schedules edge user equipments on the N RBs corresponding to the second cell And performing information transmission, where the second cell is a cell managed by the second base station, the second base station is a base station controlled by the centralized controller, and the first cell and the second cell are mutually In the neighboring cell, the N RBs corresponding to the second cell are RBs that are consistent with the N RB frequency positions of the reduced power of the first cell.
  • the centralized controller acquires, by the first cell, a power consumption ratio of the M resource blocks R B transmitted by the first cell, where:
  • the centralized controller acquires a power reduction ratio of the M RBs of the first cell according to the load information of the first cell; or
  • the centralized controller acquires a power reduction ratio of the M RBs of the first cell according to a proportion of edge user equipments in the second cell.
  • the centralized controller is used by the centralized controller from the first cell
  • the N RBs that determine the power reduction in the M RBs include: Determining, by the centralized controller, N RBs of reduced power from the M RBs of the first cell according to the power reduction ratio and the frequency corresponding to the M RBs respectively being low to high; or Determining, by the centralized controller, N RBs of reduced power from the M RBs of the first cell according to the descending power ratio and an order in which the frequencies corresponding to the M RBs are respectively high to low; or And according to the power reduction ratio, the centralized controller randomly determines N RBs of reduced power from the M RBs in the first 'area.
  • the method further includes:
  • the centralized controller sends the frequency location information of the N RBs of the reduced power to the second base station, so that the second base station schedules the edge user on N RBs corresponding to the second cell
  • the device transmits information.
  • an apparatus for interference coordination including:
  • An acquiring unit configured to obtain a power reduction ratio of M resource blocks RBs for performing information transmission by the first cell, where M is a positive integer, the first cell is a cell managed by the first base station, and the first base station is a Describe the base station controlled by the centralized controller;
  • a determining unit configured to determine, according to the power reduction ratio, N RBs of reduced power from the M RBs of the first cell, where N is a positive integer less than or equal to M;
  • An indicating unit configured to instruct the first base station to perform information transmission by using the N RBs after the first cell power reduction processing, so that the second base station schedules edge user equipments on the N RBs corresponding to the second cell And performing information transmission, where the second cell is a cell managed by the second base station, the second base station is a base station controlled by the centralized controller, and the first cell and the second cell are mutually In the neighboring cell, the N RBs corresponding to the second cell are RBs that are consistent with the N RB frequency positions of the reduced power of the first cell.
  • the acquiring unit is further configured to be used according to the Obtaining, by the load information of a cell, the ratio of the power consumption of the M RBs of the first cell; or acquiring the M of the first cell according to the proportion of the edge user equipment in the second cell The ratio of power reduction of RB.
  • the determining unit is further configured to respectively correspond to the M RB according to the power reduction ratio Determining the N RBs of the reduced power from the M RBs of the first cell in an order of the frequency from low to high; or the frequency corresponding to the power reduction ratio and the M RBs respectively being high to low a sequence of determining, according to the power reduction ratio, N RBs of reduced power from the M RBs of the first cell; or randomly determining power reduction from the M RBs of the first cell according to the power reduction ratio N HB.
  • the apparatus further includes: a sending unit.
  • the sending unit is configured to send the frequency position information of the N RBs of the reduced power to the second base station, so that the second base station schedules the N RBs corresponding to the second cell Edge user equipment and information transmission.
  • an embodiment of the present invention provides a base station, including: a processor, a transmitter, a receiver, and a modem;
  • the processor is configured to obtain a ratio of power reduction ratios of the M resource blocks RB that are used for information transmission by the first cell;
  • the processor is further configured to determine, according to the power reduction ratio, N RBs of reduced power from the M RBs of the first cell;
  • the processor is further configured to perform information transmission by using the N RBs that are processed by the first cell to reduce power, so that the second base station schedules edge user equipment and performs information on N RBs corresponding to the second cell.
  • the transmitter is configured to send frequency position information of the N RBs with reduced power to the a second base station, configured to enable the second base station to schedule an edge user equipment and perform information transmission on the N RBs corresponding to the second cell;
  • the receiver is configured to receive a data signal or a feedback signal
  • the modem is configured to convert a control signal or a data signal that needs to be received by the receiver into a digitally modulated signal suitable for channel transmission.
  • an embodiment of the present invention provides a centralized controller, including: a processor, a transmitter, a receiver, and a modem;
  • the processor is configured to obtain a ratio of power reduction ratios of the M resource blocks RB that are used for information transmission by the first cell;
  • the processor is further configured to determine, according to the power reduction ratio, N RBs of reduced power from the M RBs of the first cell;
  • the processor is further configured to: instruct the first base station to perform information transmission by using the N RBs after the first cell power reduction processing, so that the second base station schedules edge users on the N RBs corresponding to the second cell Equipment and information transmission;
  • the transmitter is configured to send frequency position information of the N RBs of the reduced power to the second base station, so that the second base station schedules edge users on N RBs corresponding to the second cell Equipment and information transmission;
  • the receiver is configured to receive a data signal or a feedback signal
  • the modem is configured to convert a control signal or a data signal that needs to be received by the receiving into a digitally modulated signal suitable for channel transmission.
  • the method and device for interference coordination provided by the embodiment of the present invention, first, the first base station acquires a power reduction ratio of M resource blocks RBs for information transmission by the first cell, and then, according to the power reduction ratio, the first base station obtains M from the first cell. Determining the N RBs of the power reduction in the RBs, and finally the first base station uses the N RBs after the power reduction of the first cell to perform information transmission, so that the second base station schedules the edge user equipment on the N RBs corresponding to the second cell. And information transmission.
  • the first base station uses the N RBs that are processed by the first cell to perform information transmission, so that the second base station schedules the edge user equipment on the N RBs corresponding to the second cell.
  • the information transmission can further reduce the ICI generated when adjacent cells multiplex the same frequency resources, and can reduce the implementation complexity of ICI control by ICIC technology.
  • FIG. 1 is a flowchart of a method for interference coordination according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of another method for interference coordination according to Embodiment 2 of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for interference coordination according to Embodiment 3 of the present invention. Schematic diagram of a base station structure;
  • FIG. 5 is a schematic structural diagram of another apparatus for interference coordination according to Embodiment 4 of the present invention
  • FIG. 6 is a schematic structural diagram of a centralized controller according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic diagram of resource block arrangement according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram showing a correspondence relationship between resource blocks of a first cell and a second cell according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a user equipment priority list according to an embodiment of the present invention.
  • the method for the interference coordination provided by the embodiment of the present invention may be applied to a Long Term Evolution (LTE) network or an Enhanced Long Term Evolution (LTE-A, LTF ⁇ Advanced) network, where the base station involved in the embodiment of the present invention is used.
  • LTE Long Term Evolution
  • LTE-A Enhanced Long Term Evolution
  • LTF ⁇ Advanced LTF ⁇ Advanced
  • eNB evolved base station
  • LTA LTA network
  • This embodiment provides a method for interference coordination. As shown in FIG. 1, the method includes:
  • the first base station acquires a ratio of power reduction of M resource blocks RBs for performing information transmission by the first cell.
  • the M is a positive integer
  • the first cell is a cell managed by the first base station, that is, the first base station provides services for each user equipment in the first cell.
  • the power reduction may be performed to reduce the power to be less than or equal to the preset power threshold, or to reduce to zero power.
  • the preset power threshold may be configured according to an actual situation, which is not limited in the embodiment of the present invention.
  • the step 101 may be specifically: the first base station acquires a power reduction ratio of the M RBs of the first cell according to the load information of the first cell.
  • the load information includes the number of user equipments and the number of bearers.
  • the number of user equipments is the total number of user equipments in the cell
  • the number of bearers is the total number of user equipments that the base station can carry.
  • the number of user equipments in the load information of the first cell is 300
  • the number of bearers is 400, that is, 3/4 of the RBs in the first cell are used by the user equipment of the cell, so the power consumption of the M RBs of the first cell is reduced.
  • the ratio is 1/4.
  • the step 101 may be specifically: the first base station acquires a power reduction ratio of the M RBs of the first cell according to the proportion of the edge user equipment in the second cell. For example, there are 600 user equipments in the second cell, wherein there are 200 edge user equipments interfered by the first base station, that is, the proportion of edge user equipments in the second cell is 1/3, so M of the first cell The ratio of power reduction of RB is 1/3.
  • the RB may be a Resource Block Group (RBG), and one RBG is generally composed of three RBs.
  • step 101 may be that the first base station acquires the first 'J, The ratio of power reduction corresponding to the RBG for information transmission in the area.
  • the first base station determines N RBs of the power reduction rate from the M RBs of the first cell according to the power reduction ratio.
  • the step 102 may be specifically: determining, according to the power reduction ratio and the frequency corresponding to the M RBs, the first base station determining the power reduction N from the M RBs of the first, the _1, and the region. Or the first base station determines the N RBs of the reduced power from the M RBs of the first cell according to the power reduction ratio and the frequency corresponding to the M RBs respectively; or according to the power reduction ratio, A base station randomly determines N RBs of reduced power from M RBs of the first cell.
  • M is 50, that is, 50 RBs in the first cell can be used for information transmission, and the ratio of power reduction obtained by the first base station is 1/3, that is, N is 17, 50 in the figure.
  • the frequencies corresponding to the RBs are sequentially incremented by number.
  • the first base station determines, from the 50 RBs of the first cell, 17 RBs of the reduced power are RBs 0 to 16; if 50 RBs are respectively
  • the first base station determines the 17 RBs of the reduced power from the 50 RBs of the first cell to be the 34th to the 50th RBs; if the RBs of the reduced power are randomly determined, the The 17 RBs of the power reduction determined by a base station from the 50 RBs of the first cell may be No. 3, No. 7, No. 8, No. 10, No. 13, No. 14, No. 15, No. 18, No. 20, No. 26 , No. 28, No. 29, No. 31, No. 38, No. 40, No. 47 and No. 48 RB.
  • the first base station may further send the frequency location information of the reduced power N RBs to the second base station, so that the second base station schedules the edge user equipment and performs information transmission on the N RBs corresponding to the second cell.
  • the first base station may carry the frequency position information of the reduced power N RBs in a Relative Narrowband Transmit Power (MTP), and send the information to the second base station through the X2 interface, so that the second base station
  • MTP Relative Narrowband Transmit Power
  • the edge user equipment is scheduled to perform information transmission according to the frequency location information of the N RBs carried in the received signaling RNTP.
  • the X2 interface is used to implement interconnection between eNBs.
  • the first base station performs information transmission by using the N RBs after the power reduction of the first cell. Further, the second base station is configured to schedule edge user equipment and perform information transmission on the N RBs corresponding to the second cell.
  • the second cell is a cell managed by the second base station, and the first cell and the second cell are adjacent to each other, and the first cell may be an interfering cell, and the second cell may be an interfered cell, which is not implemented in the embodiment of the present invention. limited.
  • the N RBs corresponding to the second cell are RBs that are consistent with the N RB frequency positions of the reduced power of the first cell. For example, as shown in FIG. 8 , the 6 RBs of the power reduction of the first cell are 0 to 5 Then, the six RBs corresponding to the second cell are numbers 0 to 5.
  • the first cell and the second cell may be cells managed by the same base station, or may be cells managed by different base stations, which are not limited in the embodiment of the present invention.
  • the first base station performs information transmission on the N RBs after the power reduction of the first cell
  • the second base station schedules the edge user equipment and performs information transmission on the N RBs corresponding to the second cell.
  • the embodiment of the present invention improves the performance of information transmission on the part of the RB by the user equipment of the first cell, thereby improving the performance of the edge user equipment of the second cell for performing information transmission on the RBs, thereby implementing the information in the adjacent cells.
  • the user equipment balances the performance of information transmission on the RB.
  • the determining, by the second base station, the N RBs corresponding to the second cell, and scheduling the edge user equipment on the N RBs corresponding to the second cell, and performing the information transmission may include: first acquiring each of the second cells a channel quality indication (CQI, Channel Quality Indication) value of the user equipment on the M RBs, and then determining, according to the CQI values, frequency positions of the N RBs that are processed by the first base station for power reduction, and finally at the same frequency of the second cell.
  • An edge user equipment is scheduled on the N RBs of the location and information is transmitted.
  • the channel quality indicator CQI is a measurement standard of the communication quality of the user equipment on a certain RB.
  • the second base station determines, according to the CQI values, the frequency positions of the N RBs that are processed by the first base station, and may be implemented by using a Frequency Selective Schedule (FSS) algorithm. Specifically, the second base station first establishes a corresponding user equipment priority list according to the CQI value of the M RBs, and then the second base station acquires the corresponding N RBs, where the corresponding The N RBs with the highest priority are the N RBs corresponding to the user equipment priority list of the edge user equipment. The greater the CQ I value reported by the user equipment, the higher the priority of the user equipment in the user equipment priority list corresponding to the RB. Conversely, the smaller the CQ I value reported by the user equipment, the user equipment priority list corresponding to the RB. The lower the user equipment priority.
  • FSS Frequency Selective Schedule
  • the RBs 0 to 5 are the 6 RBs of the power reduction determined by the first base station.
  • the user equipment with the highest priority is the edge user equipment.
  • the user equipment priority list corresponding to the RB 9th the user equipment with the highest priority is the central user equipment.
  • Each of the base stations divides the corresponding cell into two internal and external layers according to the wireless link.
  • the user equipment in the inner layer is the central user equipment, and the user equipment in the outer layer is the edge user equipment.
  • the user equipment priority list corresponding to the RB No. 4 the user equipment with the highest priority is the edge user equipment, so that the RB No. 4 is the RB of the power reduction determined by the first base station;
  • the list since the user equipment with the highest priority is the central user equipment, it is determined that the RB 9 is not the RB of the power reduction determined by the first base station.
  • the method for interference coordination provided by the embodiment of the present invention can also be applied in the time domain to solve the inter-cell interference problem generated when neighboring cells use the same time domain resource. Specifically, the performance of the information transmission of the user equipment of the first cell on the part of the time domain resource is moderately reduced, thereby improving the ' ⁇ energy of the edge user equipment of the second cell to perform information transmission on the part of the time domain resource, thereby implementing The user equipment in each cell balances the performance of data transmission on the same time domain resource.
  • This embodiment provides a method for interference coordination. As shown in FIG. 2, the method includes:
  • the centralized controller acquires a power reduction ratio of the M resource block RBs that are used for information transmission by the first cell.
  • the M is a positive integer
  • the first cell is a cell managed by the first base station
  • the first base station is a base station controlled by the centralized controller.
  • the power reduction may be specifically The power is reduced to be less than or equal to the preset power threshold, or is reduced to zero power.
  • the preset power threshold may be configured according to an actual situation, which is not limited by the embodiment of the present invention.
  • the step 201 may be: the centralized controller acquires the power reduction ratio of the M RBs of the first cell according to the load information of the first cell.
  • the load information includes the number of user equipments and the number of bearers.
  • the number of user equipments is the total number of user equipments in the cell
  • the number of bearers is the total number of user equipments that the base station can carry.
  • the number of user equipments in the load information of the first cell is 400
  • the number of bearers is 1000, that is, 2/5 of the RBs in the first 'area are used by the user equipments of the cell, so the M RBs of the first cell are lowered.
  • the power ratio is 3/5.
  • the step 201 may be specifically: the centralized controller acquires the power reduction ratio of the M RBs of the first cell according to the proportion of the edge user equipment in the second cell.
  • the proportion of edge user equipment in the second cell is 1 / 4, so M of the first cell
  • the ratio of power reduction of RB is 1/4.
  • the RB may be an RBG, and the RBG is generally composed of three RBs.
  • the step 201 may be that the centralized controller acquires a power reduction ratio corresponding to the RBG for performing information transmission by the first cell.
  • the centralized controller determines N RBs of reduced power from the M RBs of the first cell.
  • N is a positive integer less than or equal to M.
  • the step 202 may be specifically: determining, according to the power reduction ratio and the frequency corresponding to the M RBs, the centralized controller determines the N RBs of the reduced power from the M RBs of the first cell; Or according to the power reduction ratio and the frequency corresponding to the M RBs, the centralized controller determines the N RBs of the reduced power from the M RBs of the first cell; or according to the power reduction ratio, the centralized controller N RBs of reduced power are randomly determined among the M RBs of the first cell.
  • the centralized controller may further send the frequency position information of the reduced power N RBs to the second base station, so that the second base station schedules the edge user setting on the N RBs corresponding to the second cell. Prepare and transfer information.
  • the centralized controller may carry the frequency position information of the N RBs of the reduced power in the signaling RNTP, and send the information to the second base station through the X 2 interface, so that the second base station carries the RNTP according to the received signaling.
  • the frequency location information of the N RBs, and the edge user equipment is scheduled to perform information transmission.
  • the centralized controller instructs the first base station to perform information transmission by using the N RBs after the first cell power reduction processing.
  • the second base station is configured to schedule edge user equipment and perform information transmission on the N RBs corresponding to the second cell.
  • the second cell is a cell managed by the second base station, and the second base station is a base station controlled by the centralized controller.
  • the first cell and the second cell are mutually adjacent to each other, and the first cell may be an interfering cell, and the second cell may be an interfering cell, which is not limited in the embodiment of the present invention.
  • the N RBs corresponding to the second cell are RBs that match the N RB frequency positions of the reduced power of the first cell.
  • the first cell and the second cell may be cells managed by the same base station, or may be cells managed by different base stations, which are not limited in the embodiment of the present invention.
  • the centralized controller instructs the first base station to perform information transmission on the N RBs after the power consumption of the first cell, so that the second base station schedules the edge user equipment on the N RBs corresponding to the second cell.
  • Transfer information that is, the embodiment of the present invention improves the performance of information transmission on the part of the RB by the user equipment of the first cell, thereby improving the performance of the edge user equipment of the second cell for performing information transmission on the RBs, thereby implementing the information in the adjacent cells.
  • the user equipment balances the performance of information transmission on the RB.
  • the method for interference coordination provided by the embodiment of the present invention can also be applied in the time domain to solve the interference problem generated when neighboring cells use the same time domain resource.
  • the performance of the information transmission of the user equipment of the first cell on the part of the time domain resource is moderately reduced by the centralized controller, thereby improving the performance of the edge user equipment of the second cell for performing information transmission on the part of the time domain resource, and further Realizing user equipment in each cell managed by the base station controlled by the centralized controller, Performance balance of data transfer on the same time domain resource.
  • the embodiment of the present invention provides a device for interference coordination.
  • the entity of the device may be a base station, where the device includes: an acquiring unit 31, The unit 32 and the transmission unit 33 are determined.
  • the obtaining unit 31 is configured to obtain a power reduction ratio of the M resource blocks RB for performing information transmission by the first cell.
  • M is a positive integer
  • the first cell is a cell managed by the first base station.
  • the determining unit 32 is configured to determine N RBs of reduced power from the M RBs of the first 'area according to the ratio of the reduced power acquired by the obtaining unit 31.
  • N is a positive integer less than or equal to M.
  • the transmitting unit 33 is configured to perform information transmission by using the N RBs after the first cell power reduction process determined by the determining unit 32, so that the second base station schedules the edge user equipment and performs information transmission on the N RBs corresponding to the second cell. .
  • the second cell is a cell managed by the second base station, where the first cell and the second cell are adjacent to each other, and the N RBs corresponding to the second cell are HBs that are consistent with the N RB frequency positions of the reduced power of the first cell. .
  • the obtaining unit 31 is further configured to acquire, according to the load information of the first cell, a ratio of power reduction of the M RBs of the first cell, or acquire M RBs of the first cell according to the proportion of the edge user equipment in the second cell.
  • the ratio of power reduction is further configured to acquire, according to the load information of the first cell, a ratio of power reduction of the M RBs of the first cell, or acquire M RBs of the first cell according to the proportion of the edge user equipment in the second cell. The ratio of power reduction.
  • the determining unit 32 is further configured to determine, according to the power reduction ratio and the frequency corresponding to the M RBs, the N RBs of the reduced power from the M RBs of the first cell; or according to the power reduction ratio and the M Determining the frequency of the RBs from high to low, determining N RBs of reduced power from the M RBs of the first cell; or randomly determining the power reduction from the M RBs of the first cell according to the ratio of power reduction N RBs.
  • the device may further include: a sending unit 34.
  • the sending unit 34 is configured to send the frequency location information of the N RBs of the reduced power determined by the determining unit 32 to the second base station, so that the second base station schedules the edge user equipment and performs information on the N RBs corresponding to the second cell. transmission.
  • the entity of the apparatus for interference coordination may be a base station.
  • the base station may include: a processor 4 1 , a transmitter 42 , a receiver 4 3 , a modem 44 , and a receiver 43 .
  • the modems 44 are connected.
  • the processor 4 1 is configured to obtain a power reduction ratio of the M resource blocks RBs for performing information transmission by the first cell.
  • M is a positive integer
  • the first cell is a cell managed by the first base station.
  • the processor 4 1 is further configured to determine, according to the power reduction ratio, N RBs of the power reduction rate from the M RBs of the first '_1, the area.
  • N is a positive integer less than or equal to M.
  • the processor 4 is further configured to perform information transmission by using the N RBs after the power reduction of the first cell, so that the second base station schedules the edge user equipment and performs information transmission on the N RBs corresponding to the second cell.
  • the second cell is a cell managed by the second base station, where the first cell and the second cell are adjacent to each other, and the N RBs corresponding to the second cell are HBs that are consistent with the N RB frequency positions of the reduced power of the first cell. .
  • the processor 4 1 is further configured to obtain, according to the load information of the first cell, a power reduction ratio of the M RBs of the first cell.
  • the processor 4 1 is further configured to obtain a power reduction ratio of the M RBs of the first cell according to a proportion of edge user equipments in the second cell.
  • the processor 4 1 is further configured to determine, according to the power reduction ratio and the frequency corresponding to the M RBs, the N RBs of the reduced power from the M RBs of the first cell.
  • the processor 4 1 is further configured to determine N RBs of reduced power from the M RBs of the first cell according to a descending power ratio and a frequency corresponding to the M RBs respectively.
  • the processor 41 is further configured to randomly determine N RBs of reduced power from the M RBs of the first '_1, the area according to the power reduction ratio.
  • the transmitter 42 is configured to send the frequency location information of the N RBs of the reduced power to the second base station, so that the second base station schedules the edge user equipment and performs information transmission on the N RBs corresponding to the second cell.
  • the receiver 43 is configured to receive a data signal or a feedback signal.
  • a modem 44 is operative to convert a control signal or data signal that needs to be received by the receiver 43 into a digitally modulated signal suitable for channel transmission.
  • the method and device for interference coordination provided by the embodiment of the present invention, first, the first base station acquires a power reduction ratio of M resource blocks RBs for information transmission by the first cell, and then, according to the power reduction ratio, the first base station obtains M from the first cell. Determining the N RBs of the power reduction in the RBs, and finally the first base station uses the N RBs after the power reduction of the first cell to perform information transmission, so that the second base station schedules the edge user equipment on the N RBs corresponding to the second cell. And information transmission.
  • the frequency band is divided into several frequency reuse sets, and the edge user equipment of the neighboring cell is configured with different frequency reuse sets.
  • the next N RBs perform information transmission, so that the second base station schedules edge user equipments on the N RBs corresponding to the second cell and performs information transmission, thereby reducing IC I generated when adjacent cells multiplex the same frequency resources.
  • the implementation complexity of IC I control through ICIC technology can be reduced.
  • the embodiment of the present invention provides a device for interference coordination.
  • the entity of the device may be a base station, where the device includes: an acquiring unit 51, The determining unit 52 and the indicating unit 53 are provided.
  • the obtaining unit 51 is configured to obtain a power reduction ratio of the M resource blocks RB for performing information transmission by the first cell.
  • M is a positive integer
  • the first cell is a cell managed by the first base station
  • the first base station is a base station controlled by the centralized controller.
  • the determining unit 52 is configured to determine N RBs of reduced power from the M RBs of the first 'area according to the ratio of the reduced power acquired by the obtaining unit 51.
  • N is a positive integer less than or equal to M.
  • the indicating unit 53 is configured to instruct the first base station to perform information transmission by using the N RBs after the first cell power reduction process determined by the determining unit 52, so that the second base station schedules the edge user equipment on the N RBs corresponding to the second cell. And information transmission.
  • the second cell is a cell managed by the second base station, and the second base station is a base station controlled by the centralized controller, where the first cell and the second cell are adjacent to each other, and the N RBs corresponding to the second cell are the same as the first cell. N RBs with the same RB frequency position with reduced power.
  • the obtaining unit 51 is further configured to acquire, according to the load information of the first cell, a ratio of power reduction of the M RBs of the first cell, or according to a proportion of edge user equipments in the second cell, Obtaining a power reduction ratio of the M RBs of the first cell.
  • the determining unit 52 is further configured to determine the N RBs of the reduced power from the M RBs of the first cell according to the power reduction ratio and the frequency corresponding to the M RBs respectively being low to high. Or determining N RBs of reduced power from the M RBs of the first cell according to the descending power ratio and a frequency corresponding to the M RBs respectively from high to low; or according to the And reducing a power ratio, and randomly determining N RBs of reduced power from the M RBs of the first cell.
  • the device may further include: a sending unit 54.
  • the sending unit 54 is configured to send the frequency location information of the N RBs of the reduced power determined by the determining unit 52 to the second base station, so that the second base station schedules the edge user equipment and performs information on the N RBs corresponding to the second cell. transmission.
  • the entity of the apparatus for interference coordination may be a base station.
  • the base station may include: a processor 61, a transmitter 62, a receiver 63, a modem 64, and a receiver 63 and a modem 64. connection.
  • the processor 6 1 is configured to obtain a power reduction ratio of the resource block RB of the first cell for information transmission.
  • ⁇ is a positive integer
  • the first cell is a cell managed by the first base station.
  • the processor 6 1 is further configured to determine, according to the power reduction ratio, the RBs of the power reduction rate from the first _1 and the RBs of the area.
  • N is a positive integer less than or equal to M.
  • the processor 6 1 is further configured to: instruct the first base station to perform information transmission by using the N RBs that are processed by the first cell, to enable the second base station to schedule the edge user equipment and perform information on the N RBs corresponding to the second cell. transmission.
  • the second cell is a cell managed by the second base station, where the first cell and the second cell are adjacent to each other, and the N RBs corresponding to the second cell are HBs that are consistent with the N RB frequency positions of the reduced power of the first cell. .
  • the processor 6 1 is further configured to acquire, according to the load information of the first cell, a power reduction ratio of the M RBs of the first cell.
  • the processor 6 1 is further configured to obtain, according to a proportion of the edge user equipment in the second cell, a power reduction ratio of the M RBs of the first cell.
  • the processor 6 1 is further configured to determine, according to the power reduction ratio and the frequency corresponding to the M RBs, the N RBs of the reduced power from the M RBs of the first cell.
  • the processor 6 1 is further configured to determine, according to the power reduction ratio and the frequency corresponding to the M RBs, the N RBs of the reduced power from the N RBs of the first cell.
  • the processor 6 1 is further configured to randomly determine the N RBs of the reduced power from the M RBs of the first '_1, the area according to the power reduction ratio.
  • the transmitter 62 is configured to send the frequency location information of the N RBs of the reduced power to the second base station, so that the second base station schedules the edge user equipment and performs information transmission on the N RBs corresponding to the second cell.
  • the receiver 6 3 is configured to receive a data signal or a feedback signal.
  • a modem 64 is operative to convert a control signal or data signal that needs to be received by the receiver 63 into a digitally modulated signal suitable for channel transmission.
  • the method and device for interference coordination provided by the embodiment of the present invention, first, the first base station acquires a power reduction ratio of M resource blocks RBs for information transmission by the first cell, and then, according to the power reduction ratio, the first base station obtains M from the first cell. Determining the N RBs of the power reduction in the RBs, and finally the first base station uses the N RBs after the power reduction of the first cell to perform information transmission, so that the second base station schedules the edge user equipment on the N RBs corresponding to the second cell. And information transmission.
  • the frequency band is divided into several frequency reuse sets, and the edge user equipment of the neighboring cell is configured with different frequency reuse sets.
  • the next N RBs perform information transmission, so that the second base station schedules edge user equipments on the N RBs corresponding to the second cell and performs information transmission, thereby reducing IC I generated when adjacent cells multiplex the same frequency resources.
  • the implementation complexity of IC I control through ICIC technology can be reduced.
  • the apparatus for the interference coordination provided by the embodiment of the present invention may implement the foregoing method embodiments. For the specific function implementation, refer to the description in the method embodiment, and details are not described herein again.
  • the method and apparatus for interference coordination provided by the embodiments of the present invention may be applicable to reducing interference generated by intra-frequency multiplexing between adjacent cells, but is not limited thereto.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur un procédé et un dispositif de coordination de brouillage, qui concernent le domaine des systèmes de communication et peuvent réduire un brouillage entre des cellules adjacentes et réduire un brouillage parmi des cellules adjacentes et réduire la complexité de mise en œuvre dans un contrôle ICI au moyen d'une technologie ICIC. Le procédé comprend les étapes suivantes : d'abord, une première station de base acquiert un taux de réduction de puissance de M blocs de ressource (RB) pour une première cellule pour effectuer une transmission d'informations; puis, en fonction du taux de réduction de puissance, la première station de base détermine N RB pour réduction de puissance parmi les M RB de la première cellule; et enfin, la première station de base effectue une transmission d'informations à l'aide de N RB, soumis à un traitement de réduction de puissance, de la première cellule, de manière à permettre à une seconde station de base de planifier un équipement utilisateur en bord de cellule sur N RB correspondant à une seconde cellule et d'effectuer une transmission d'informations. Les modes de réalisation de la présente invention sont applicables pour réduire un brouillage généré entre des cellules adjacentes durant un multiplexage à la même fréquence.
PCT/CN2013/081941 2013-08-21 2013-08-21 Procédé et dispositif de coordination de brouillage Ceased WO2015024211A1 (fr)

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PCT/CN2013/081941 WO2015024211A1 (fr) 2013-08-21 2013-08-21 Procédé et dispositif de coordination de brouillage

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WO2015168907A1 (fr) * 2014-05-08 2015-11-12 Alcatel Lucent Procédé et appareil pour aider un ue à réduire le brouillage
CN108243424B (zh) * 2016-12-23 2021-08-27 中国移动通信集团广东有限公司 一种问题小区的确定方法及装置

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CN102186247A (zh) * 2011-05-05 2011-09-14 新邮通信设备有限公司 一种小区间干扰协调的方法和系统
WO2012044019A2 (fr) * 2010-09-28 2012-04-05 Lg Electronics Inc. Coordination de brouillage intercellulaire dans un système de communication sans fil
CN102790669A (zh) * 2011-05-19 2012-11-21 中国移动通信集团公司 一种控制信息传输方法及其装置
WO2013089344A1 (fr) * 2011-12-15 2013-06-20 Lg Electronics Inc. Procédé de réduction des interférences d'un équipement d'utilisateur dans un système d'accès sans fil, ainsi qu'équipement d'utilisateur correspondant

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CN102065549A (zh) * 2009-11-16 2011-05-18 中国移动通信集团公司 无线分层网络中的干扰管理方法和系统以及基站
US8682313B2 (en) * 2009-12-08 2014-03-25 Electronics And Telecommunications Research Institute Over-the-air inter-cell interference coordination methods in cellular systems

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WO2012044019A2 (fr) * 2010-09-28 2012-04-05 Lg Electronics Inc. Coordination de brouillage intercellulaire dans un système de communication sans fil
CN102186247A (zh) * 2011-05-05 2011-09-14 新邮通信设备有限公司 一种小区间干扰协调的方法和系统
CN102790669A (zh) * 2011-05-19 2012-11-21 中国移动通信集团公司 一种控制信息传输方法及其装置
WO2013089344A1 (fr) * 2011-12-15 2013-06-20 Lg Electronics Inc. Procédé de réduction des interférences d'un équipement d'utilisateur dans un système d'accès sans fil, ainsi qu'équipement d'utilisateur correspondant

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