WO2014177008A1 - 一种干扰协调方法及基站 - Google Patents

一种干扰协调方法及基站 Download PDF

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Publication number
WO2014177008A1
WO2014177008A1 PCT/CN2014/076081 CN2014076081W WO2014177008A1 WO 2014177008 A1 WO2014177008 A1 WO 2014177008A1 CN 2014076081 W CN2014076081 W CN 2014076081W WO 2014177008 A1 WO2014177008 A1 WO 2014177008A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
base station
interference
equipment identification
cell
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PCT/CN2014/076081
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English (en)
French (fr)
Inventor
王睿
Original Assignee
华为终端有限公司
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Publication date
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Priority to JP2015557325A priority Critical patent/JP6106289B2/ja
Priority to EP14792167.0A priority patent/EP2925071B1/en
Priority to KR1020157018551A priority patent/KR101651449B1/ko
Publication of WO2014177008A1 publication Critical patent/WO2014177008A1/zh
Priority to US14/825,031 priority patent/US9385854B2/en

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Classifications

    • 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
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/26—Monitoring; Testing of receivers using historical data, averaging values or statistics
    • 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
    • H04B17/318—Received signal strength
    • 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
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the present invention belongs to the field of communications, and in particular, to an interference coordination method and a base station. Background technique
  • D2D communication is a technology that directly exchanges data or services without passing through a base station.
  • D2D communication operates in the licensed band in the cellular network, and each D2D communication link occupies the same resources as a cellular communication link. While D2D communication shares resources with the cellular network, it also brings some interference. How to effectively coordinate the interference between cellular networks and D2D communication is an urgent problem to be solved. Summary of the invention
  • an interference coordination method includes:
  • the interference indication includes: an interference signal strength indication RSSI or an indication of the interference of all physical resource blocks PRB received by the user equipment in the at least one subframe a sort index value of RSS I of all PRBs;
  • the serving cell is a The cell that the user equipment is serving, the first candidate user equipment identifier list includes: the candidate user equipment identifier of the serving cell, and the candidate user equipment identifier of the serving cell corresponding to the interference of the communication link of the macro cell Information
  • the base station determines, as the reusable resource of the device-to-device (D2D) communication, the communication link of the macro cell corresponding to the user equipment identifier with the least interference in the first candidate user equipment identifier list.
  • D2D device-to-device
  • the base station in conjunction with the interference coordination method of the first aspect, the base station, according to the interference indication, and an uplink resource allocation signal of the serving cell in the at least one subframe
  • the first candidate user equipment identification list that determines the highest priority includes:
  • the candidate user equipment identifier list includes: the candidate user equipment identifier of the neighboring cell and the candidate user equipment identifier of the neighboring cell corresponding to the interference information of the communication link of the macro cell; according to the second candidate user
  • the device identification list adjusts the first candidate user equipment identification list.
  • the adjusting the second candidate user equipment identifier list according to the second candidate user equipment identifier list Includes:
  • the acquiring, by the base station, the second candidate user equipment identifier list of the neighboring cell includes:
  • the base station directly acquires the second candidate user equipment identifier list of the neighboring cell
  • the base station receives the second candidate user equipment identifier list sent by the base station of the neighboring cell.
  • the method determines, by the base station, a communication link of a macro cell corresponding to a user equipment identifier that has the least interference in the first candidate user equipment identifier list as a device-to-device ( D2D) Reusable resources for communication include:
  • the base station sends the first user equipment candidate identifier list to the base station of the neighboring cell.
  • a base station in a second aspect, includes:
  • a receiving unit configured to receive an interference indication that is sent by the user equipment in the at least one subframe;
  • the interference indication includes: an interference signal strength of all physical resource blocks PB received by the user equipment in the at least one subframe a sort index value indicating an RSSI or an RSSI of all of the PRBs;
  • a determining unit configured to determine, according to the interference indication, the first candidate user equipment identifier list of the highest priority according to the uplink resource allocation information of the serving cell in the at least one subframe; the serving cell
  • the first candidate user equipment identifier list that is managed by the base station for the user equipment is: the candidate user equipment identifier of the serving cell and the candidate user equipment identifier of the serving cell Interference information of the communication link of the macro cell;
  • a selecting unit configured to determine, as the reusable resource of the device-to-device (D2D) communication, a communication link of the macro cell corresponding to the user equipment identifier with the least interference in the first candidate user equipment identifier list.
  • D2D device-to-device
  • the determining unit is specifically configured to determine, according to the interference indication and the uplink resource allocation information, a first candidate of a highest priority.
  • a user equipment identifier list the second candidate user equipment identifier list of the neighboring cell is obtained;
  • the second candidate user equipment identifier list includes: the candidate user equipment identifier of the neighboring cell, and the preparation of the neighboring cell And selecting, by the user equipment, the interference information of the communication link corresponding to the macro cell; and adjusting the first candidate user equipment identifier list according to the second candidate user equipment identifier list.
  • the determining unit includes:
  • a first confirmation module configured to determine, according to the interference indication and the uplink resource allocation information, a first candidate user equipment identifier list with a highest priority
  • An acquiring module configured to: directly acquire, by the serving cell, the second candidate user equipment identifier list of the neighboring cell, where the serving cell and the neighboring cell are located at the same base station; And not receiving the second candidate user equipment identifier list sent by the base station of the neighboring cell, where the second candidate user equipment identifier list includes: the candidate user equipment of the neighboring cell And the identifier and the candidate user equipment identifier of the neighboring cell correspond to interference information of the communication link of the macro cell;
  • the adjustment module is configured to delete the user equipment identifier that is in the first user equipment identifier list and has a large interference in the neighboring cell, where the user equipment identifier of the neighboring cell has a large interference: The user equipment ID in the list that interferes with the threshold.
  • the base station further The method includes: a sending unit, configured to: if the serving cell is not in the same base station as the neighboring cell, send the first user equipment candidate identifier list to a base station of the neighboring cell.
  • the technical solution provided by the present invention selects the identifier of the reused resource of the D2D, the communication link of the macro cell with the least interference in the candidate user equipment identifier list is always selected, so that the D2D communication can be reduced. Interference to the macro base station.
  • Embodiment 1 is a flowchart of an interference coordination method according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic diagram of a first alternative user equipment identity list provided by Embodiment 2 of the present invention
  • FIG. 4 is a structural diagram of a base station according to Embodiment 3 of the present invention
  • FIG. 5 is a structural diagram of a base station according to Embodiment 4 of the present invention.
  • the first embodiment provides an interference coordination method, which is performed by a base station.
  • the method is as shown in FIG. 1 and includes:
  • the S1 base station receives the interference indication sent by the user equipment in the at least one subframe; the interference indication includes: all physical resource blocks received by the user equipment in the at least one subframe (English: Phys ica l resource block , referred to as: PRB) Interference signal strength indication (English: Received S i gna l Strength Indica t ion, referred to as: RSSI) or the index index value of the RSSI of all the PRBs.
  • the interference indication includes: all physical resource blocks received by the user equipment in the at least one subframe (English: Phys ica l resource block , referred to as: PRB)
  • Interference signal strength indication English: Received S i gna l Strength Indica t ion, referred to as: RSSI
  • RSSI Received S i gna l Strength Indica t ion
  • the base station determines, according to the interference indication, the first candidate user equipment identifier list of the highest priority according to the uplink resource allocation information of the serving cell in the at least one subframe.
  • the serving cell is a cell managed by the base station for the user equipment to be served.
  • the foregoing first candidate user equipment identifier list includes: the candidate user equipment identifier of the serving cell and the interference information of the communication link of the macro cell corresponding to the candidate user equipment identifier of the serving cell.
  • the method of the embodiment of the present invention selects the UE ID of the D2D reused resource (English name: user equipment Ident i ty, Chinese: user equipment identifier), the macro cell with the least interference in the candidate UE ID list is always selected.
  • the communication link so it can reduce the interference of the D2D communication to the macro base station.
  • the foregoing method may further include: after S13:
  • the first candidate UE ID list is sent to the base station of the neighboring cell.
  • a base station of the neighboring cell may refer to the first candidate UE ID list, such that The neighboring cell base station is more reasonable in selecting the UE ID of the D2D reused resource.
  • the implementation method of the S12 may be specifically:
  • the candidate user equipment identifier list includes: the candidate user equipment identifier of the neighboring cell and the candidate user equipment identifier of the neighboring cell corresponding to the interference information of the communication link of the macro cell; according to the second candidate user
  • the device identification list adjusts the first candidate user equipment identification list.
  • the acquiring manner of the second candidate user equipment identifier list is the same as that of the foregoing first candidate user equipment identifier list, and the difference is that only the cell corresponding to the second candidate user equipment identifier list is a neighboring cell.
  • the cell corresponding to the first candidate user equipment identifier list is a serving cell, where the neighboring cell may be a cell adjacent to the serving cell.
  • the adjusting the second candidate user equipment identifier list according to the second candidate user equipment identifier list includes: deleting a user equipment identifier that is in the first user equipment identifier list and having a large interference in the neighboring cell, where The user equipment identifier of the neighboring cell with a large interference is specifically: the user equipment identifier that exceeds the threshold in the second user equipment identifier list.
  • the interference coordination method described in the first embodiment can effectively reduce the interference of the D2D communication to the macro base station.
  • the second embodiment provides an interference coordination method.
  • the method provided in this embodiment is implemented in the LTE system.
  • the communication between the D2D devices in this embodiment works in the uplink frequency band of the macro cell, where the UE1 can receive the entire frequency band.
  • the transmitted signal on all PRBs to the received signal interference strength indicator (RSI) of UE1.
  • RSI received signal interference strength indicator
  • the allocation of system resources is in units of one subframe, that is, the allocation of resources in one subframe is constant, so the measurement of the RSSI value can be performed in a time length of 1 ms, and A user may not be scheduled in this subframe due to the limited capacity of the physical downlink control channel (Physic): Do a multiple of lm for the signal strength estimate within the frame.
  • the method shown in Figure 2 includes:
  • the UE1 After obtaining the interference signal strength indicator (RSSI), the UE1 directly passes the PRB in at least one subframe by using an uplink channel such as a physical uplink shared channel (English name: Phys ica l Upl ink Shared Channe l, English abbreviation: PUSCH).
  • the interference indication is sent to the serving base station (eNodeBl);
  • S21 can also be replaced by, UE1 performs the ordering of the PRB interference strength indication, and then sorts The index value of the PRB of the subsequent at least one subframe according to the interference strength from large to small (or small to large) is transmitted to the serving base station (eNodeB1) through an uplink channel such as a PUSCH or a PUCCH. Sending only the interference strength index value can reduce the amount of data sent.
  • the serving base station obtains uplink resource allocation information (UL-Grant) of the serving cell after obtaining the interference signal strength indication (RSSI) or the relative interference signal strength indication (the sorted PRB index) on the PR1.
  • the highest priority first candidate UE ID list can be confirmed (the list is shown in Figure 3).
  • the interference strength information of the UE1 on all PRBs may be transmitted to the base station (eNodeB2) of the neighboring cell through the X2 interface, and the eNodeB2 obtains the interference signal strength indication (RSSI) or phase of all the PRBs on the UE1.
  • the interference signal strength indication (the sorted PRB index value) is combined with the uplink resource allocation information (UL-Grant) of the neighboring cell, and the highest priority second candidate UE ID list, the second candidate UE ID, may also be confirmed.
  • the size of the list may be set to K2; then the eNodeB2 sends the second candidate UE ID list obtained by itself and the uplink resource allocation information (UL-Grant) of the neighboring cell in one frame to the eNodeB1 through the X2 interface; the eNodeB1 obtains the phase After the uplink resource allocation information of the neighboring cell, the recommended PRB resource that can be reused in each lattice frame can be calculated, and the serving cell can be further determined by combining the first candidate UE ID list and the serving cell uplink resource allocation information (UL-Grant). The highest priority reusing UE IDs, then the D2D resource can completely communicate with the macro cell corresponding to the reused UE IDs.
  • the resource allocation process may be performed in a period of several subframes or a 10 ms frame or several 10 ms frames.
  • Embodiment 3 provides a base station, as shown in FIG. 4, the base station includes:
  • the receiving unit 41 is configured to receive an interference indication that is sent by the user equipment in the at least one subframe, where the interference indication includes: an interference signal of all physical resource blocks PRB received by the user equipment in the at least one subframe The strength indicates the RSSI or the sort index value of the RSS I of all the PRBs;
  • the determining unit 42 is configured to determine, according to the interference indication, the first candidate user equipment identifier list of the highest priority according to the uplink resource allocation information of the serving cell in the at least one subframe;
  • the serving cell is the base station management
  • the first candidate user equipment identifier list includes: an alternate user equipment identifier of the serving cell, and an alternate user equipment identifier of the serving cell corresponding to a macro cell communication chain. Interference information of the road;
  • the selecting unit 43 is configured to set a user with the least interference in the first candidate user equipment identifier list
  • the communication link of the macro cell corresponding to the identifier is determined as a reusable resource for device-to-device communication.
  • the determining unit 42 is specifically configured to be used in
  • Determining, according to the interference indication and the uplink resource allocation information, a first candidate user equipment identifier list with a highest priority, and acquiring a second candidate user equipment identifier list of the neighboring cell; the second candidate user equipment identifier list The method includes: the candidate user equipment identifier of the neighboring cell, and the candidate user equipment identifier of the neighboring cell corresponding to the interference information of the communication link of the macro cell; and adjusting, according to the second candidate user equipment identifier list, A list of first alternate user device identifications.
  • the determining unit 42 specifically includes:
  • the first confirmation module 421 is configured to determine a highest priority first candidate user equipment identifier list according to the interference indication and the uplink resource allocation information;
  • the obtaining module 422 is configured to directly acquire, according to the serving cell, the second candidate user equipment identifier list of the neighboring cell, where the serving cell is adjacent to the neighboring cell, Receiving, by the base station, the second candidate user equipment identifier list sent by the base station of the neighboring cell; the second candidate user equipment identifier list includes: the candidate user of the neighboring cell The device identifier and the candidate user equipment identifier of the neighboring cell correspond to interference information of a communication link of the macro cell;
  • the adjustment module 423 is configured to delete the user equipment identifier that is in the first user equipment identifier list and has a large interference in the neighboring cell, where the user equipment identifier of the neighboring cell has a large interference: Identify the user equipment ID in the list that the interference exceeds the threshold.
  • the base station further includes:
  • the sending unit 44 is configured to send, by the serving cell, the first user equipment candidate identifier list to the base station of the neighboring cell, if the serving cell is not in the same base station as the neighboring cell.
  • the base station described in Embodiment 3 above can effectively reduce the interference of the D2D communication to the macro base station.
  • the fourth embodiment further provides a base station.
  • the hardware structure diagram of the base station is as shown in FIG. 5, and includes: a processor 501, a memory 502, a transceiver 503, and a bus 504.
  • the processor 501, the memory 502, and the transceiver 503 are connected to each other through a bus 504.
  • the bus 504 may be an Indus try Standard Architecture (ISA) bus or a peripheral component interconnect (English: Per iphera l Component Interconnect, referred to as PCI) ) Bus, etc.
  • the processor 501 may be a general-purpose processor, including a central processing unit (English: centra l proces s ing uni t , abbreviated as CPU ) and a network processor (English: network proces sor , abbreviation NP) and so on.
  • a central processing unit English: centra l proces s ing uni t , abbreviated as CPU
  • NP network processor
  • the memory 502 is configured to store a program.
  • the program can include program code, the program code including computer operating instructions for instructing the processor 501 to issue computer operating instructions.
  • the memory 502 may include a high-speed random access memory (English: random-acces s memory, RAM for short), and may also include non-volatile memory, such as at least one disk memory.
  • the transceiver 503 is configured to receive or send data, information or a list.
  • the transceiver 503 is configured to receive an interference indication that is sent by the user equipment in the at least one subframe.
  • the interference indication includes: an interference signal strength of all physical resource blocks PRB received by the user equipment in the at least one subframe. a sort index value indicating an RSSI or an RSSI of all of the PRBs;
  • the processor 501 is configured to determine, according to the interference indication, an uplink candidate resource allocation information of the serving cell in the at least one subframe, a highest priority first candidate user equipment identifier list, where the serving cell is managed by the base station.
  • the first candidate user equipment identifier list includes: an alternate user equipment identifier of the serving cell, and an alternate user equipment identifier of the serving cell corresponding to a macro cell communication link.
  • the interference information of the macro cell corresponding to the user equipment identifier with the least interference in the first candidate user equipment identifier list is determined as a reusable resource of device-to-device (D2D) communication.
  • D2D device-to-device
  • the processor 501 is configured to determine, according to the interference indication and the uplink resource allocation information, a first candidate user equipment identifier list with the highest priority, and obtain a second candidate user equipment identifier list of the neighboring cell.
  • the second candidate user equipment identifier list includes: the candidate user equipment identifier of the neighboring cell and the interference information of the communication link of the macro cell corresponding to the candidate user equipment identifier of the neighboring cell;
  • the second candidate user equipment identity list adjusts the first candidate user equipment identity list.
  • the obtaining, by the processor 501, the second candidate user equipment identifier list of the neighboring cell may be: if the serving cell and the neighboring cell are located under the same base station, directly acquiring the neighboring cell a second user equipment identifier list; if the serving cell and the neighboring cell are not located in the same base station, the control transceiver 503 receives the second candidate user equipment identifier list sent by the base station of the neighboring cell. .
  • the transceiver 503 sends the first user equipment candidate identifier list to the base station of the neighboring cell if the serving cell is not in the same base station as the neighboring cell.
  • each module or unit included is only divided according to functional logic, but is not limited to the above division, as long as the corresponding function can be realized; in addition, the specific name of each functional module is also They are only used to facilitate mutual differentiation and are not intended to limit the scope of the present invention.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明适用于通信领域，提供了一种干扰协调方法及基站，所述方法包括：基站接收用户设备发送的在至少一个子帧内的干扰指示；所述干扰指示包括：所述用户设备在所述至少一个子帧内接收到的所有PRB的RSSI或所述所有PRB的 RSSI的排序索引值；所述基站根据所述干扰指示和服务小区在所述至少一个子帧内的上行资源分配信息确定最高优先级的第一备选用户设备标识列表；所述服务小区为所述基站管理的为所述用户设备正在服务的小区；所述基站将所述第一备选用户设备标识列表中干扰最小的用户设备标识所对应的宏小区的通信链路确定为D2D通信的可重用资源。

Description

一种干扰协调方法及基站
技术领域
本发明属于通信领域， 尤其涉及一种干扰协调方法及基站。 背景技术
在 3GPP提出的后续长期演进（英文： long term evolut ion Advanced , 简 称： LTE-A) 的研究项目中， 需要在 LTE 的基础上提供新的技术来满足 IMT- Advanced (英文全禾尔： Interna t iona l Mobi le Te lecommunica t ions- Advanced ) 的要求， 提供更高的数据速率和系统容量。 IMT-A系统在蜂窝网络下允许支持设 备到设备（英文： Device-to-Dev ice， 简称： D2D )通信来提高频谱利用率。 D2D 通信是一种不经过基站转接而直接进行数据交换或者服务的技术。 D2D通信在蜂 窝网络中是工作在许可频段， 每一个 D2D通信链路占用的资源与一个蜂窝通信 链路占用的资源相同。 D2D通信与蜂窝网络共享资源的同时， 也会带来一定的干 扰。 如何有效的协调蜂窝网络与 D2D通信之间的干扰是急需解决的问题。 发明内容
本发明实施例的目的在于提供一种干扰协调方法， 皆在解决有效的协调蜂 窝网络与 D2D通信之间的干扰的问题。
第一方面， 提供一种干扰协调方法， 所述方法包括：
基站接收用户设备发送的在至少一个子帧内的干扰指示； 所述干扰指示包 括： 所述用户设备在所述至少一个子帧内接收到的所有物理资源块 PRB的干扰 信号强度指示 RSSI或所述所有 PRB的 RSS I的排序索引值；
所述基站根据所述干扰指示和服务小区在所述至少一个子帧内的上行资源 分配信息确定最高优先级的第一备选用户设备标识列表； 所述服务小区为所述 基站管理的为所述用户设备正在服务的小区， 所述第一备选用户设备标识列表 包括： 所述服务小区的备选用户设备标识以及所述服务小区的备选用户设备标 识对应宏小区的通信链路的干扰信息；
所述基站将所述第一备选用户设备标识列表中干扰最小的用户设备标识所 对应的宏小区的通信链路确定为设备到设备（D2D )通信的可重用资源。
结合第一方面的一种干扰协调方法， 在第一方面的第一种可选方案中， 所 述基站根据所述干扰指示和服务小区在所述至少一个子帧内的上行资源分配信 息确定最高优先级的第一备选用户设备标识列表包括：
所述基站根据所述干扰指示和所述上行资源分配信息确定最高优先级的第 一备选用户设备标识列表， 所述基站获取相邻小区的第二备选用户设备标识列 表； 所述第二备选用户设备标识列表包括： 所述相邻小区的备选用户设备标识 以及所述相邻小区的备选用户设备标识对应宏小区的通信链路的干扰信息； 根 据所述第二备选用户设备标识列表调整所述第一备选用户设备标识列表。
结合第一方面的第一种可选方案， 在第一方面的第二种可选方案中， 所述 根据所述第二备选用户设备标识列表调整所述第二备选用户设备标识列表具体 包括：
删除所述第一用户设备标识列表中在所述相邻小区干扰大的用户设备标 识， 所述相邻小区干扰大的用户设备标识具体为： 在所述第二用户设备标识列 表中干扰超过阈值的用户设备标识。
结合第一方面的第一种可选方案， 在第一方面的第三种可选方案中， 所述 基站获取相邻小区的第二备选用户设备标识列表具体包括：
如所述服务小区与所述相邻小区位于同一基站下， 则所述基站直接获取所 述相邻小区的所述第二备选用户设备标识列表；
如所述服务小区与所述相邻小区不位于同一基站下， 则所述基站接收所述 相邻小区的基站发送的所述第二备选用户设备标识列表。
结合第一方面的一种干扰协调方法、 结合第一方面的第一种可选方案、 结 合第一方面的第二种可选方案或结合第一方面的第三种可选方案， 在第一方面 的第四种可选方案中， 所述方法在所述基站将所述第一备选用户设备标识列表 中干扰最小的用户设备标识所对应的宏小区的通信链路确定为设备到设备 ( D2D ) 通信的可重用资源之后还包括：
如所述服务小区与所述相邻小区不在同一基站下， 则所述基站将所述第一 用户设备备选标识列表发送给所述相邻小区的基站。
第二方面， 提供一种基站， 所述基站包括：
接收单元， 用于接收用户设备发送的在至少一个子帧内的干扰指示； 所述 干扰指示包括： 所述用户设备在所述至少一个子帧内接收到的所有物理资源块 P B的干扰信号强度指示 RSSI或所述所有 PRB的 RSSI的排序索引值；
确定单元， 用于根据所述干扰指示和服务小区在所述至少一个子帧内的上 行资源分配信息确定最高优先级的第一备选用户设备标识列表； 所述服务小区 为所述基站管理的为所述用户设备正在服务的小区， 所述第一备选用户设备标 识列表包括： 所述服务小区的备选用户设备标识以及所述服务小区的备选用户 设备标识对应宏小区的通信链路的干扰信息；
选取单元， 用于将所述第一备选用户设备标识列表中干扰最小的用户设备 标识所对应的宏小区的通信链路确定为设备到设备（D2D )通信的可重用资源。
结合第二方面的一种基站， 在第二方面的第一种可选方案中， 所述确定单 元具体用于根据所述干扰指示和所述上行资源分配信息确定最高优先级的第一 备选用户设备标识列表， 获取相邻小区的第二备选用户设备标识列表； 所述第 二备选用户设备标识列表包括： 所述相邻小区的备选用户设备标识以及所述相 邻小区的备选用户设备标识对应宏小区的通信链路的干扰信息； 根据所述第二 备选用户设备标识列表调整所述第一备选用户设备标识列表。
结合第二方面一种基站， 在第二方面的第二种可选方案中， 所述确定单元 包括：
第一确认模块， 用于根据所述干扰指示和所述上行资源分配信息确定最高 优先级的第一备选用户设备标识列表；
获取模块， 用于如所述服务小区与所述相邻小区位于同一基站下， 则直接 获取所述相邻小区的第二备选用户设备标识列表； 如所述服务小区与所述相邻 小区不位于同一基站下， 则接收所述相邻小区的基站发送的所述第二备选用户 设备标识列表； 所述第二备选用户设备标识列表包括： 所述相邻小区的备选用 户设备标识以及所述相邻小区的备选用户设备标识对应宏小区的通信链路的干 扰信息；
调整模块， 用于删除所述第一用户设备标识列表中在所述相邻小区干扰大 的用户设备标识， 所述相邻小区干扰大的用户设备标识具体为： 在所述第二用 户设备标识列表中干扰超过阈值的用户设备标识。
结合第二方面的一种基站、 结合第二方面的第一种可选方案或结合第二方 面的第二种可选方案， 在第二方面的第三种可选方案中， 所述基站还包括： 发送单元， 用于如所述服务小区与所述相邻小区不在同一基站下， 则将所 述第一用户设备备选标识列表发送给所述相邻小区的基站。
在本发明实施例中， 本发明提供的技术方案选择 D2D的重用资源的标识时， 始终选择的是备选用户设备标识列表中干扰最小的宏小区的通信链路， 所以其 能够减小 D2D通信对宏基站的干扰。 附图说明
图 1是本发明实施例一提供的干扰协调方法的流程图；
图 2是本发明实施例二提供的一种干扰协调方法的流程图；
图 3是本发明实施例二提供的第一备选用户设备标识列表示意图； 图 4是本发明实施例三提供的基站的结构图；
图 5是本发明实施例四提供的基站的结构图。
具体实施方式
为了使本发明的目的、 技术方案及优点更加清楚明白， 以下结合附图及实 施例， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅 仅用以解释本发明， 并不用于限定本发明。
实施例一
实施例一提供一种干扰协调方法， 该方法由基站执行， 该方法如图 1所示， 包括：
S1 基站接收用户设备发送的在至少一个子帧内的干扰指示； 所述干扰指 示包括： 所述用户设备在所述至少一个子帧内接收到的所有物理资源块（英文： Phys ica l resource block , 简称： PRB ) 的干扰信号强度指示 （英文： Rece ived S i gna l Strength Indica t ion, 简称： RSSI )或所述所有 PRB的 RSSI的排序索 引值。
512、 基站根据所述干扰指示和服务小区在所述至少一个子帧内的上行资源 分配信息确定最高优先级的第一备选用户设备标识列表；
上述服务小区为所述基站管理的为该所述用户设备正在服务的小区。 上述 第一备选用户设备标识列表包括： 所述服务小区的备选用户设备标识以及所述 服务小区的备选用户设备标识对应宏小区的通信链路的干扰信息。
513、 将所述第一备选用户设备标识列表中干扰最小的用户设备标识所对应 的宏小区的通信链路确定为设备到设备（D2D ) 通信的可重用资源。
本发明实施例提供的方法在选择 D2D的重用资源的 UE ID (英文全称： user equipment Ident i ty, 中文： 用户设备标识）时， 始终选择的是备选 UE ID列表 中干扰最小的宏小区的通信链路， 所以其能够减小 D2D通信对宏基站的干扰。
可选的， 上述方法在 S13之后还可以包括：
如服务小区与相邻小区不在同一基站下， 则将第一备选 UE ID列表发送给 相邻小区的基站。 这样相邻小区的基站可以参考该第一备选 UE ID列表， 使得 相邻小区基站在进行 D2D的重用资源的 UE ID的选择时更加的合理。 可选的， S12的实现方法具体可以为：
所述基站根据所述干扰指示和所述上行资源分配信息确定最高优先级的第 一备选用户设备标识列表， 所述基站获取相邻小区的第二备选用户设备标识列 表； 所述第二备选用户设备标识列表包括： 所述相邻小区的备选用户设备标识 以及所述相邻小区的备选用户设备标识对应宏小区的通信链路的干扰信息； 根 据所述第二备选用户设备标识列表调整所述第一备选用户设备标识列表。 另外， 上述第二备选用户设备标识列表的获取方式与上述第一备选用户设备标识列表 的获取方式相同， 不同点仅仅是该第二备选用户设备标识列表对应的小区为相 邻小区， 该第一备选用户设备标识列表对应的小区为服务小区， 其中， 该相邻 小区可以为与该服务小区相邻的小区。
上述根据所述第二备选用户设备标识列表调整所述第二备选用户设备标识 列表具体包括： 删除所述第一用户设备标识列表中在所述相邻小区干扰大的用 户设备标识， 所述相邻小区干扰大的用户设备标识具体为： 在所述第二用户设 备标识列表中干扰超过阈值的用户设备标识。
通过上述实施例一所描述的干扰协调方法可以有效减小 D2D通信对宏基站 的干扰。
实施例二
实施例二提供一种干扰协调方法， 本实施例提供的方法在 LTE系统内实现， 本实施例中的 D2D设备之间的通信工作在宏小区的上行频段， 此处， UE1可以 接收到整个频带内所有 PRB上的发射信号到 UE1的接收信号干扰强度指示 ( RSSI ) 。 对与 LTE系统， 系统资源的分配是以一个子帧为单位的， 即在一个 子帧内资源的分配是不变的， 所以该 RSSI值的测量可以在 1ms的时间长度上进 行， 并且， 在一个子帧内可能由于物理下行控制信道（英文全称： Phys ica l Downl ink Control Channe l 英文简称： PDCCH ) 的容量有限等原因造成有的用 户在此子帧内无法被调度， 因此可以在一个 10ms的帧内做多次 lm为单位的信 号强度估计。 该方法如图 2所示包括：
S21、 当 UE1获得该干扰信号强度指示 （RSSI )后， 直接通过物理上行共享 信道（英文全称： Phys ica l Upl ink Shared Channe l ， 英文简称： PUSCH ) 等 上行信道把至少一个子帧内的 PRB干扰指示发送给服务基站 （eNodeBl ) ；
当然 S21也可以替换成， UE1进行 PRB干扰强度指示的排序， 然后再把排序 后的至少一个子帧的按照干扰强度由大到小（或者由小到大） PRB的索引值通过 PUSCH或者 PUCCH等上行信道发送给服务基站 （eNodeBl ) 。 仅发送干扰强度索 引值可以减少发送的数据量。
S22、 服务基站 （eNodeBl )获得该 UE1上的所有 PRB上干扰信号强度指示 ( RSSI )或者相对干扰信号强度指示 （排序后的 PRB索引 )后结合服务小区的 上行资源分配信息 （UL-Grant ) ， 可以确认最高优先级的第一备选 UE ID列表 (该列表如图 3所示） 。
当然， 在实际应用中， 该 UE1在所有 PRB上的干扰强度信息可以通过 X2接 口传送给相邻小区的基站 （eNodeB2 ) ， eNodeB2获得该 UE1上的所有 PRB上干 扰信号强度指示 （RSSI )或者相干扰信号强度指示 （排序后的 PRB索引值）后 结合相邻小区的上行资源分配信息 （UL-Grant ) ， 也可以确认最高优先级的第 二备选 UE ID列表， 该第二备选 UE ID列表的大小可以设定为 K2; 然后 eNodeB2 通过 X2接口向 eNodeBl发送自己获得的第二备选 UE ID列表和一帧内的相邻小 区的上行资源分配信息（UL-Grant )； eNodeBl获得该相邻小区的上行资源分配 信息后可以计算出每一格子帧上可以重用的建议 PRB资源， 并且结合第一备选 UE ID列表和服务小区上行资源分配信息（UL-Grant )可以进一步确定出服务小 区中的最高优先级的重用 UE IDs , 则 D2D的资源可以完全和该重用 UE IDs对应 的宏小区的通信链路重复使用， 避免对基站侧造成较大的干扰。 并且由于宏小 区的用户设备有可能处于高速移动中， 因此该资源分配过程可以按几个子帧或 者一个 10ms帧或者几个 10ms帧的周期进行。
实施例三
实施例三提供一种基站， 该基站如图 4所示， 包括：
接收单元 41， 用于接收用户设备发送的在至少一个子帧内的干扰指示； 所 述干扰指示包括： 所述用户设备在所述至少一个子帧内接收到的所有物理资源 块 PRB的干扰信号强度指示 RSSI或所述所有 PRB的 RSS I的排序索引值；
确认单元 42， 用于根据所述干扰指示和服务小区在所述至少一个子帧内的 上行资源分配信息确定最高优先级的第一备选用户设备标识列表； 所述服务小 区为所述基站管理的为所述用户设备正在服务的小区， 所述第一备选用户设备 标识列表包括： 所述服务小区的备选用户设备标识以及所述服务小区的备选用 户设备标识对应宏小区的通信链路的干扰信息；
选取单元 43， 用于将所述第一备选用户设备标识列表中干扰最小的用户设 备标识所对应的宏小区的通信链路确定为设备到设备通信的可重用资源。
可选的， 上述确定单元 42具体用于
根据所述干扰指示和所述上行资源分配信息确定最高优先级的第一备选用 户设备标识列表， 获取相邻小区的第二备选用户设备标识列表； 所述第二备选 用户设备标识列表包括： 所述相邻小区的备选用户设备标识以及所述相邻小区 的备选用户设备标识对应宏小区的通信链路的干扰信息； 根据所述第二备选用 户设备标识列表调整所述第一备选用户设备标识列表。
可选的， 确定单元 42具体包括：
第一确认模块 421，用于根据所述干扰指示和所述上行资源分配信息确定最 高优先级的第一备选用户设备标识列表；
获取模块 422， 用于如所述服务小区与所述相邻小区位于同一基站下， 则直 接获取所述相邻小区的第二备选用户设备标识列表； 如所述服务小区与所述相 邻小区不位于同一基站下， 则接收所述相邻小区的基站发送的所述第二备选用 户设备标识列表； 所述第二备选用户设备标识列表包括： 所述相邻小区的备选 用户设备标识以及所述相邻小区的备选用户设备标识对应宏小区的通信链路的 干扰信息；
调整模块 423，用于删除所述第一用户设备标识列表中在所述相邻小区干扰 大的用户设备标识， 所述相邻小区干扰大的用户设备标识具体为： 在所述第二 用户设备标识列表中干扰超过阈值的用户设备标识。
可选的， 所述基站还包括：
发送单元 44， 用于如所述服务小区与所述相邻小区不在同一基站下， 则将 所述第一用户设备备选标识列表发送给所述相邻小区的基站。
上述实施例三所描述的基站可以有效减小 D2D通信对宏基站的干扰。
实施例四
实施例四还提供一种基站， 该基站的硬件结构图如图 5 所示， 包括： 处理 器 501、 存储器 502、 收发器 503和总线 504。
处理器 501、 存储器 502、 收发器 503通过总线 504相互连接； 总线 504可 以是工业标准架构体系 （Indus try Standard Archi tecture , ISA ) 总线或外围 组件互联（英文： Per iphera l Component Interconnect , 简称： PCI ) 总线等。
上述的处理器 501 可以是通用处理器， 包括中央处理器 （英文： centra l proces s ing uni t , 简称 CPU ) 、 网络处理器 （英文： network proces sor , 简称 NP ) 等。
存储器 502， 用于存放程序。 具体地， 程序可以包括程序代码， 所述程序代 码包括计算机操作指令， 该程序用于指示处理器 501 发出计算机操作指令。 存 储器 502可能包含高速随机存储器（英文： random-acces s memory, 简称： RAM ) 存储器， 也可能还包括非易失性存储器 （non- vo la t i le memory ) ， 例如至少一 个磁盘存储器。
收发器 503， 用于接收或发送数据、 信息或列表。
收发器 503用于接收用户设备发送的在至少一个子帧内的干扰指示； 所述 干扰指示包括： 所述用户设备在所述至少一个子帧内接收到的所有物理资源块 PRB的干扰信号强度指示 RSSI或所述所有 PRB的 RSSI的排序索引值；
处理器 501用于根据所述干扰指示和服务小区在所述至少一个子帧内的上 行资源分配信息确定最高优先级的第一备选用户设备标识列表； 所述服务小区 为所述基站管理的为所述用户设备正在服务的小区， 所述第一备选用户设备标 识列表包括： 所述服务小区的备选用户设备标识以及所述服务小区的备选用户 设备标识对应宏小区的通信链路的干扰信息； 将所述第一备选用户设备标识列 表中干扰最小的用户设备标识所对应的宏小区的通信链路确定为设备到设备 ( D2D ) 通信的可重用资源。
可选的， 处理器 501 具体用于根据所述干扰指示和所述上行资源分配信息 确定最高优先级的第一备选用户设备标识列表， 获取相邻小区的第二备选用户 设备标识列表； 所述第二备选用户设备标识列表包括： 所述相邻小区的备选用 户设备标识以及所述相邻小区的备选用户设备标识对应宏小区的通信链路的干 扰信息； 根据所述第二备选用户设备标识列表调整所述第一备选用户设备标识 列表。
可选的， 处理器 501 获取相邻小区的第二备选用户设备标识列表具体可以 为： 如所述服务小区与所述相邻小区位于同一基站下， 则直接获取所述相邻小 区的第二备选用户设备标识列表； 如所述服务小区与所述相邻小区不位于同一 基站下， 则控制收发器 503接收所述相邻小区的基站发送的所述第二备选用户 设备标识列表。
可选的， 收发器 503 如所述服务小区与所述相邻小区不在同一基站下， 则 将所述第一用户设备备选标识列表发送给所述相邻小区的基站。
述实施例四所描述的基站可以有效减小 D2D通信对宏基站的干扰。 上述单元和系统实施例中， 所包括的各个模块或单元只是按照功能逻辑进 行划分的， 但并不局限于上述的划分， 只要能够实现相应的功能即可； 另外， 各功能模块的具体名称也只是为了便于相互区分， 并不用于限制本发明的保护 范围。
本领域技术人员可以理解， 本发明实施例提供的技术方案全部或部分步骤 是可以通过程序指令相关的硬件来完成。 比如可以通过计算机运行程来完成。 该程序可以存储在可读取存储介质， 例如， 随机存储器、 磁盘、 光盘等。
以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在本发 明的精神和原则之内所作的任何修改、 等同替换和改进等， 均应包含在本发明 的保护范围之内。

Claims

禾 u
1、 一种干扰协调方法， 其特征在于， 所述方法包括：
基站接收用户设备发送的在至少一个子帧内的干扰指示； 所述干扰指示包 括： 所述用户设备在所述至少一个子帧内接收到的所有物理资源块 PRB的干扰 信号强度指示 RSSI或所述所有 PRB的 RSS I的排序索引值；
所述基站根据所述干扰指示和服务小区在所述至少一个子帧内的上行资源 分配信息确定最高优先级的第一备选用户设备标识列表； 所述服务小区为所述 基站管理的为所述用户设备正在服务的小区， 所述第一备选用户设备标识列表 包括： 所述服务小区的备选用户设备标识以及所述服务小区的备选用户设备标 识对应宏小区的通信链路的干扰信息；
所述基站将所述第一备选用户设备标识列表中干扰最小的用户设备标识所 对应的宏小区的通信链路确定为设备到设备 D2D通信的可重用资源。
2、 根据权利要求 1所述的方法， 其特征在于， 所述基站根据所述干扰指示 和服务小区在所述至少一个子帧内的上行资源分配信息确定最高优先级的第一 备选用户设备标识列表包括：
所述基站根据所述干扰指示和所述上行资源分配信息确定最高优先级的第 一备选用户设备标识列表， 所述基站获取相邻小区的第二备选用户设备标识列 表； 所述第二备选用户设备标识列表包括： 所述相邻小区的备选用户设备标识 以及所述相邻小区的备选用户设备标识对应宏小区的通信链路的干扰信息； 根 据所述第二备选用户设备标识列表调整所述第一备选用户设备标识列表。
3、 根据权利要求 2所述的方法， 其特征在于， 所述根据所述第二备选用户 设备标识列表调整所述第二备选用户设备标识列表具体包括：
删除所述第一用户设备标识列表中在所述相邻小区干扰大的用户设备标 识， 所述相邻小区干扰大的用户设备标识具体为： 在所述第二用户设备标识列 表中干扰超过阈值的用户设备标识。
4、 根据权利要求 2所述的方法， 其特征在于， 所述基站获取相邻小区的第 二备选用户设备标识列表具体包括：
如所述服务小区与所述相邻小区位于同一基站下， 则所述基站直接获取所 述相邻小区的所述第二备选用户设备标识列表；
如所述服务小区与所述相邻小区不位于同一基站下， 则所述基站接收所述 相邻小区的基站发送的所述第二备选用户设备标识列表。
5、 根据权利要求 1至 4任一项所述的方法， 其特征在于， 所述方法在所述 基站将所述第一备选用户设备标识列表中干扰最小的用户设备标识所对应的宏 小区的通信链路确定为设备到设备 D2D通信的可重用资源之后还包括：
如所述服务小区与所述相邻小区不在同一基站下， 则所述基站将所述第一 用户设备备选标识列表发送给所述相邻小区的基站。
6、 一种基站， 其特征在于， 所述基站包括：
接收单元， 用于接收用户设备发送的在至少一个子帧内的干扰指示； 所述 干扰指示包括： 所述用户设备在所述至少一个子帧内接收到的所有物理资源块 P B的干扰信号强度指示 RSS I或所述所有 PRB的 RSS I的排序索引值；
确定单元， 用于根据所述干扰指示和服务小区在所述至少一个子帧内的上 行资源分配信息确定最高优先级的第一备选用户设备标识列表； 所述服务小区 为所述基站管理的为所述用户设备正在服务的小区， 所述第一备选用户设备标 识列表包括： 所述服务小区的备选用户设备标识以及所述服务小区的备选用户 设备标识对应宏小区的通信链路的干扰信息；
选取单元， 用于将所述第一备选用户设备标识列表中干扰最小的用户设备 标识所对应的宏小区的通信链路确定为设备到设备 D2D通信的可重用资源。
7、 根据权利要求 6所述基站， 其特征在于， 所述确定单元具体用于 根据所述干扰指示和所述上行资源分配信息确定最高优先级的第一备选用 户设备标识列表， 获取相邻小区的第二备选用户设备标识列表； 所述第二备选 用户设备标识列表包括： 所述相邻小区的备选用户设备标识以及所述相邻小区 的备选用户设备标识对应宏小区的通信链路的干扰信息； 根据所述第二备选用 户设备标识列表调整所述第一备选用户设备标识列表。
8、 根据权利要求 6所述的基站， 其特征在于， 所述确定单元包括： 第一确认模块， 用于根据所述干扰指示和所述上行资源分配信息确定最高 优先级的第一备选用户设备标识列表；
获取模块， 用于如所述服务小区与所述相邻小区位于同一基站下， 则直接 获取所述相邻小区的第二备选用户设备标识列表； 如所述服务小区与所述相邻 小区不位于同一基站下， 则接收所述相邻小区的基站发送的所述第二备选用户 设备标识列表； 所述第二备选用户设备标识列表包括： 所述相邻小区的备选用 户设备标识以及所述相邻小区的备选用户设备标识对应宏小区的通信链路的干 扰信息；
调整模块， 用于删除所述第一用户设备标识列表中在所述相邻小区干扰大 的用户设备标识， 所述相邻小区干扰大的用户设备标识具体为： 在所述第二用 户设备标识列表中干扰超过阈值的用户设备标识。
9、根据权利要求 6至 8任一项所述的基站， 其特征在于， 所述基站还包括： 发送单元， 用于如所述服务小区与所述相邻小区不在同一基站下， 则将所 述第一用户设备备选标识列表发送给所述相邻小区的基站。
PCT/CN2014/076081 2013-04-28 2014-04-24 一种干扰协调方法及基站 WO2014177008A1 (zh)

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