WO2014110904A1 - 一种在lte集群通信***中进行干扰协调的方法及基站 - Google Patents

一种在lte集群通信***中进行干扰协调的方法及基站 Download PDF

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Publication number
WO2014110904A1
WO2014110904A1 PCT/CN2013/083104 CN2013083104W WO2014110904A1 WO 2014110904 A1 WO2014110904 A1 WO 2014110904A1 CN 2013083104 W CN2013083104 W CN 2013083104W WO 2014110904 A1 WO2014110904 A1 WO 2014110904A1
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time
cell
frequency resource
base station
frequency
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PCT/CN2013/083104
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English (en)
French (fr)
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罗夙
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中兴通讯股份有限公司
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Priority to EP13871870.5A priority Critical patent/EP2934033B1/en
Publication of WO2014110904A1 publication Critical patent/WO2014110904A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • 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
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/08—Trunked mobile radio systems

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and a base station for performing interference coordination in an LTE (Long Term Evolution) trunking communication system.
  • LTE Long Term Evolution
  • LTE is a long-term evolution project of 3GPP (The 3rd Generation Partnership Project). It is the largest new technology development project initiated by 3GPP in the past two years. This is OFDM (Orthogonal Frequency Division Multiplexing). Reuse technology) /FDMA (Frequency Division Multiple Access) technology can be regarded as "quasi 4G" technology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • FDMA Frequency Division Multiple Access
  • the main advantages of LTE are high peak rate, small system delay, flexible bandwidth support, and therefore wide application prospects. For example: 20MHz spectrum bandwidth can provide 100Mbps downlink frequency, 50Mbps uplink peak rate, user plane internal unidirectional transmission delay less than 5ms, support flexible configuration of 1.4MHz to 20MHz bandwidth, and can also use carrier aggregation technology to further improve cell capacity.
  • the trunking communication system is a dedicated wireless communication system developed for industrial users' command and dispatching needs for specific industry applications. A large number of wireless users share a small number of wireless channels in the system, and the command and dispatch is the main application. It is a multi-purpose and high-efficiency system. Wireless communication system.
  • the main domestic cluster application bearer network has GSM (Global System for Mobile communications
  • the common LTE system is based on the same frequency networking, so there is co-channel interference between cells.
  • LTE introduces Inter-Cell Interference Coordination (ICIC), which defines a series of processing mechanisms, including: according to edge users (Cell Edge) User, referred to as CEU), Center Center User (CCU), Outer Ring (OC), Inner Circle (IC), Borrowing Area (BC) to distinguish resources, and transfer overload indication between X2 ports (Overload Indicator , referred to as 01), High Interference Indication (HII), and Relative Narrowband TX Power (RNTP) information for power control and resource allocation, thereby reducing intra-cell co-frequency. Interference, enhance system performance and user experience.
  • the LTE trunking communication system belongs to the same frequency grouping network as the ordinary LTE system, and there is a problem of co-channel interference between cells. Therefore, an interference coordination mechanism is needed.
  • a common LTE system is served by a single user; while a cluster system is served by a group, and a group contains multiple users.
  • the distribution of users in a group is special: some may be in the center of the cell, some may be at the edge of the cell, and some may even be located in another cell.
  • the service policy of all users in a group is the same - this is determined by the characteristics of the cluster system, so the group cannot be grouped like a normal LTE network.
  • the users in the user are divided into edge users, center users, outer circles, inner rings, and the like. Therefore, the cluster's interference coordination mechanism cannot use the ordinary LTE mechanism. Summary of the invention
  • the present invention provides a method for performing interference coordination in an LTE trunking communication system, including: Performing the following operations by a base station:
  • the base station When the time-frequency resource is allocated to the cluster service in the cell in the service area, the base station preferentially allocates the time-frequency resource that is not occupied by other neighboring cells according to the time-frequency resource information of the other neighboring cells that have obtained the cell.
  • the periodically acquiring the local Time-frequency resource information used by the neighboring cell of the cell in semi-persistent scheduling including:
  • the base station collects time-frequency resource information used by the neighboring area recorded in the time-frequency resource interaction period during semi-persistent scheduling.
  • the periodically acquiring the time-frequency resource information used by the neighboring cell of the cell in the semi-persistent scheduling includes:
  • the base station When the preset time-frequency resource interaction period arrives, the base station sends the time-frequency resource information used by the cell in the service range recorded in the time-frequency resource interaction period during the semi-persistent scheduling to the neighboring cell of the local cell. Service base station.
  • the neighboring cell is a pre-N neighboring cell pre-configured in a neighboring cell list of the current serving cell.
  • the time-frequency resource information includes: a frame number, a subframe number, and a resource block occupied bitmap.
  • the present invention provides a base station, which is applied to a long-term evolution trunking communication system, and includes: a control module and N resource allocation modules; wherein N is a positive integer, and the value is equal to the number of cells in the service range of the base station. ;
  • the control module is configured to: periodically acquire time-frequency resource information used by the neighboring cell of the cell within the service range of the base station in semi-persistent scheduling;
  • Each of the resource allocation modules is configured to: record, according to a cell in the service area of the base station, the time-frequency resource information used by the corresponding cell in the semi-persistent scheduling, and report the information to the control module;
  • the time-frequency resource is allocated to the cluster service, the time-frequency resource information of the other neighboring cells of the cell is obtained according to the control module, and the time-frequency resources that are not occupied by other neighboring cells are preferentially allocated.
  • the control module is configured to: when the neighboring cell and the local cell belong to the same base station service range, periodically acquire the time-frequency resource information used by the neighboring cell of the cell in the semi-persistent scheduling, and include: the control module Counting the time-frequency resource when the preset time-frequency resource interaction period arrives The time-frequency resource information used by the neighboring resource corresponding to the neighboring cell received by the neighboring cell in the semi-persistent scheduling.
  • the control module is configured to: when the neighboring cell and the local cell belong to the service range of different base stations, periodically acquire time-frequency resource information used by the neighboring cell of the cell in semi-persistent scheduling, including:
  • the control module sends the received time-frequency of the corresponding cell recorded by the resource allocation module in the time-frequency resource interaction period during semi-persistent scheduling.
  • the resource information is sent to the serving base station of the neighboring cell of the cell.
  • the neighboring cell is a pre-N neighboring cell pre-configured in a neighboring cell list of the current serving cell.
  • Preferably
  • the time-frequency resource information includes: a frame number, a subframe number, and a resource block occupied bitmap.
  • the co-channel interference between cells can be reduced or even avoided in the LTE trunking communication system, the system performance is improved, and the user perception is enhanced.
  • FIG. 1 is a flow chart of a method for performing interference coordination in an LTE trunking communication system according to an embodiment of the present invention
  • 2( a ) to 2 ( c ) are schematic diagrams showing an implementation manner of interference coordination resource allocation in an application example of the present invention
  • FIG. 3 is a flow chart of a method for interference coordination for a cell in an application example of the present invention. Preferred embodiment of the invention
  • a method for performing interference coordination in an LTE trunking communication system is performed by the base station as follows:
  • the time-frequency resources that are not occupied by other neighboring cells are preferentially allocated, thereby achieving the neighboring interval 4 especially for the purpose of coordination.
  • the time-frequency resource information used by the neighboring cell in the semi-persistent scheduling of the cell is periodically obtained, including:
  • the base station When the preset time-frequency resource interaction period arrives, the base station counts the time-frequency resource information used by the neighboring area in the semi-persistent scheduling during the time-frequency resource interaction period.
  • the time-frequency resource information that is used in the semi-persistent scheduling of the neighboring cell of the local cell is periodically acquired, and specifically includes:
  • the base station When the preset time-frequency resource interaction period arrives, the base station sends the time-frequency resource information used by the cell in the service range recorded in the time-frequency resource interaction period to the serving base station of the neighboring cell of the local cell. .
  • the administrator can pre-configure the neighboring cell (ie, other cells except the cell) list of the cell in the background of the network management, and the base station can use the first N neighboring cells in the neighboring cell list as the time-frequency interference coordination of the local cell.
  • the neighboring cell may also use all the neighboring cells in the neighboring cell list as the neighboring cell for coordinating the time-frequency interference of the local cell, where N is a positive integer; and the related parameters of the semi-persistent scheduling of the cell may be pre-configured through the network management background. The period of time-frequency resource interaction.
  • a method for performing interference coordination in an LTE trunking communication system which is applied to interference coordination of a base station to each serving cell within its own service range, including: Step 10: The base station records or updates time-frequency resource occupation information of each group in each subframe in each cell in the service range in each semi-persistent scheduling period, and the information includes: a frame number occupied by the cluster service, and a sub-frame Frame number and RB (Resource Block) bitmap (bit bitmap); Step 20: When the period of the current frequency resource interaction arrives, the base station counts the time-frequency occupied information of each cell in the service range;
  • Step 30 When allocating time-frequency resources for the cells in the service area, preferentially allocate time-frequency resources that are not occupied by other neighboring cells of the cell; if the time-frequency resources that have been occupied by the neighboring cells are removed, there are no time-frequency resources remaining. It can be allocated to the local cell, and then the time-frequency resources that have been occupied by other neighboring cells can be used.
  • the administrator can pre-configure the neighboring cell (ie, other cells except the cell) list of the cell in the background of the network management, and the base station can use the first N neighboring cells in the neighboring cell list as the time-frequency interference coordination of the local cell.
  • the neighboring cell may also use all the neighboring cells in the neighboring cell list as the neighboring cell for coordinating the time-frequency interference of the local cell, where N is a positive integer; and the related parameters of the semi-persistent scheduling of the cell may be pre-configured through the network management background. The period of time-frequency resource interaction.
  • a method for performing interference coordination in an LTE trunking communication system is applied to interference coordination between cells in different base stations. For each base station, the method includes:
  • Step 210 Record time-frequency resource occupation information of each group in the service area in each sub-frame in each semi-persistent scheduling period, and the information includes: a frame number occupied by the cluster service, a subframe number, and an RB bitmap. ;
  • Step 220 When the period of the current frequency resource interaction arrives, the recorded time-frequency resource occupation information is broadcasted to the serving base station of the neighboring cell of the cell in the service range through the X2 interface;
  • Step 230 After receiving time-frequency resource occupation information sent by other base stations, update the time-frequency resource occupation information of the corresponding cell.
  • Step 240 When allocating time-frequency resources for the cells in the service range, preferentially allocate time-frequency resources that are not occupied by other neighboring cells of the cell. If the time-frequency resources that have been occupied by the neighboring cells are removed, no remaining resources are available. If the cell is allocated, then the time-frequency resources that have been occupied by other neighboring cells can be used. The following uses a specific example to illustrate.
  • the horizontal axis represents the time domain resource
  • the vertical axis represents the frequency domain resource.
  • Each time-frequency resource is uniquely identified by a two-dimensional resource in the time domain and the frequency domain.
  • group 1 in cellO occupies frequency domain resource 0-2, group 2 occupies frequency domain resource 3-5; then, in resource allocation, each group in Celll cannot occupy The frequency domain resources are 0-5, so the serving base station of Celll can allocate the frequency domain resources 10-15 for the group 1 and the group 2 in the Celll; the groups in the cell 2 cannot occupy the frequency domain resources 0-5 and 10-15. Therefore, the serving base station of Cell2 can allocate the occupied frequency domain resources 19-24 for Group 1 and Group 2 in Cell2.
  • time domain resource 1 group 3 in cellO occupies frequency domain resources 3-5; then, when resource allocation is performed, group 3 in Celll cannot occupy frequency domain resources 3-5, so the service of Celll
  • the base station allocates the frequency domain resources 22-24 for the group 3 in the Celll; the groups in the cell 2 cannot occupy the frequency domain resources 3-5 and 22-24, so the serving base station of the Cell2 can be the group 3 in the Cell2.
  • the frequency domain resource 0-2 is occupied when allocated.
  • group 4 in CellO occupies frequency domain resource 0-2; then, when resource allocation is performed, group 4 in Celll cannot occupy frequency domain resource 0-2, so Celll's serving base station
  • the frequency domain resources 7-9 can be occupied when the group 4 in the Celll is allocated; the groups in the cell 2 cannot occupy the frequency domain resources 0-2 and 7-9, so the serving base station of the Cell2 can be the group 4 in the Cell2.
  • the allocation occupies frequency domain resources 22-24.
  • time domain resource 2 group 5 in CellO occupies frequency domain resources 22-24; then, when resource allocation is performed, group 5 in Celll cannot occupy frequency domain resources 22-24, so Celll's serving base station
  • the frequency domain resources 7-9 can be allocated for the group 5 in the Celll; the groups in the cell 2 cannot occupy the frequency domain resources 22-24 and 7-9, so the serving base station of the Cell2 can allocate the occupied group 5 in the Cell2.
  • the time-frequency resource occupancy of the cell that is, record all of the semi-persistent scheduling periods.
  • the time-frequency resources of the group including the frame number, the subframe number, and the RB occupation bitmap;
  • the recorded time-frequency resource occupation information is sent to all other neighboring areas, such as to Celll and Cell2;
  • the serving base station receives the time-frequency resource occupation information sent by the serving base station of the other neighboring cell of the cell, such as the time-frequency resource occupation information sent by the serving base station receiving the Cell1 and the Cell2;
  • the serving base station allocates time-frequency resources to the cluster service of the cell, it tries to avoid the time-frequency resources that have been occupied by other neighboring areas, and preferentially allocates time-frequency resources that are not occupied by other neighboring areas.
  • a base station is applied to an LTE trunking communication system, and includes: a control module and N resource allocation modules; wherein, N is a positive integer, and the value is equal to the number of cells in the service range of the base station. ;
  • the control module is configured to periodically acquire time-frequency resource information used by a neighboring cell of a cell in a service range of the base station in semi-persistent scheduling;
  • Each of the resource allocation modules is configured to record time-frequency resource information used by the corresponding cell in the semi-persistent scheduling, and is reported to the control module, and is also used to be in the corresponding cell.
  • the time-frequency resource is allocated to the cluster service, the time-frequency resource information of the other neighboring cells of the cell is obtained according to the control module, and the time-frequency resources that are not occupied by other neighboring cells are preferentially allocated.
  • the control module is configured to periodically acquire the time-frequency resource information used by the neighboring cell of the cell in the semi-persistent scheduling, and specifically includes: the control module When the preset time-frequency resource interaction period arrives, the time when the neighboring area corresponding to the resource allocation module received by the neighboring area received in the time-frequency resource interaction period is used in semi-persistent scheduling is used. Frequency resource information.
  • control module is configured to periodically acquire the time-frequency resource information used by the neighboring cell of the cell in the semi-persistent scheduling, which specifically includes:
  • the control module is configured to: when the preset time-frequency resource interaction period arrives, use the received corresponding resource that is recorded by the resource allocation module and is recorded in the time-frequency resource interaction period during semi-persistent scheduling.
  • the time-frequency resource information is sent to the serving base station of the neighboring cell of the cell.
  • the neighboring cell is a pre-N neighboring cell pre-configured in a neighboring cell list of the current serving cell.
  • the time-frequency resource information includes: a frame number, a subframe number, and a resource block occupied bitmap.
  • the co-channel interference between cells can be reduced or even avoided in the LTE trunking communication system, the system performance is improved, and the user perception is enhanced.

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Abstract

一种在 LTE集群通信***中进行干扰协调的方法，包括：由基站进行如下操作：针对服务范围内的每一个小区，周期性获取到本小区的邻区在半静态调度时使用的时频资源信息；在为服务范围内的小区中的集群业务分配时频资源时，所述基站根据获取到该小区的其他邻区的时频资源信息，优先分配未被其他邻区占用的时频资源。

Description

一种在 LTE集群通信***中进行干扰协调的方法及基站
技术领域
本发明涉及一种通信领域，尤其涉及一种在 LTE( Long Term Evolution, 长期演进） 集群通信***中进行干扰协调的方法及基站。
背景技术
LTE是 3GPP ( The 3rd Generation Partnership Project, 第三代合作伙伴计 划） 的长期演进项目， 是近两年来 3GPP启动的最大的新技术研发项目， 这 种以 OFDM( Orthogonal Frequency Division Multiplexing ,正交频分复用技术 ) /FDMA ( Frequency Division Multiple Access , 频分多址 )为核心的技术可以 被看作是"准 4G"技术。 LTE主要的优势是峰值速率高、 ***时延小、 支持带 宽灵活配置， 因此具有广泛的应用前景。 例如： 20MHz频谱带宽能够提供下 行 100Mbps、上行 50Mbps的峰值速率，用户面内部单向传输时延小于 5ms, 支持 1.4MHz到 20MHz带宽的灵活配置，还可以使用载波聚合技术， 进一步 提高小区容量。
集群通信***是为了满足行业用户指挥调度需求而开发的、 面向特定行 业应用的专用无线通信***， ***中大量无线用户共享少量无线信道， 以指 挥调度为主体应用， 是一种多用途、 高效能的无线通信***。
根据网络制式的分类， 国内主要的集群应用承载网络有 GSM ( Global
System for Mobile Communications , 全球移动通信***）集群***、 CDMA ( Code Division Multiple Access ,码分多址 ) 2000集群***。 由于带宽有限， 这些集群***只能使用语音通话功能。 而 LTE网络的优势在于大带宽、 高速 数据业务。 因此， 基于 LTE制式的集群***成为发展趋势。 在这种集群*** 中， 不但可以进行语音通话， 还可以实现可视电话通话、 视频直播等高速数 据业务。
普通 LTE***基于同频组网， 因此存在小区间的同频干扰。 为了解决这 个问题， LTE引入了小区间干扰协调功能（ Inter-Cell Interference Coordination, 简称为 ICIC ),协议中定义了一系列处理机制，包括：根据边缘用户（ Cell Edge User,简称为 CEU )、中心用户（ Cell Center User,简称为 CCU )、外圈（ OC )、 内圈（ IC )、借用区域（ BC )来区分资源，在 X2口间传递过载指示（ Overload Indicator, 简称为 01 ) 、 高干扰指示 ( High Interference Indication, 简称为 HII ) 、 载波相对发射功率 （ Relative Narrowband TX Power, 简称为 RNTP ) 信息来进行功率控制和资源分配， 以此减少小区间的同频干扰， 增强***性 能和用户感受。
LTE集群通讯***与普通的 LTE***一样都属于同频组网，存在小区间 的同频干扰问题， 因此就需要一套干扰协调机制。
普通 LTE***是以单个用户为服务对象的； 而集群***是以一个群组为 服务对象的， 一个群组中又包含多个用户。 群组中的用户分布具有特殊性： 有的可能在小区中心， 有的可能在小区边缘， 有的甚至位于另外一个小区。 虽然群组中的用户分布不固定， 但^ ^站对一个群组下所有用户的服务策略 都是相同的——这是由集群***的特性决定的，所以不能像普通 LTE网络那 样把群组中的用户分成边缘用户、 中心用户、 外圈、 内圈等。 因此集群的干 扰协调机制不能釆用普通 LTE的机制。 发明内容
本发明的目的在于提供一种在 LTE 集群通信***中进行干扰协调的方 法及基站， 以克服现有无法对集群业务进行干扰协调的缺陷。
为解决上述问题，本发明提供了一种在 LTE集群通信***中进行干扰协 调的方法， 包括： 由基站进行如下操作：
针对服务范围内的每一个小区， 周期性获取到本小区的邻区在半静态调 度时使用的时频资源信息；
在为服务范围内的小区中的集群业务分配时频资源时， 所述基站根据获 取到该小区的其他邻区的时频资源信息， 优先分配未被其他邻区占用的时频 资源。
优选地 ,
当所述邻区与本小区属于同一基站服务范围内时， 所述周期性获取到本 小区的邻区在半静态调度时使用的时频资源信息， 包括：
当预设的时频资源交互周期到达时， 所述基站统计在所述时频资源交互 周期内记录的所述邻区在半静态调度时使用的时频资源信息。
优选地 ,
当所述邻区与本小区分属于不同基站的服务范围内时， 所述周期性获取 到本小区的邻区在半静态调度时使用的时频资源信息， 包括：
当预设的时频资源交互周期到达时， 所述基站将在所述时频资源交互周 期内记录的服务范围内的小区在半静态调度时使用的时频资源信息发送给本 小区的邻区的服务基站。
优选地，
所述邻区为预先配置在当前服务小区的邻区列表中的前 N个邻区。
优选地 ,
所述时频资源信息， 包括： 帧号、 子帧号及资源块占用位图。
相应地， 本发明提供了一种基站， 应用于长期演进集群通信***中， 包 括： 控制模块和 N个资源分配模块； 其中， N 为正整数， 其值等于本基站服 务范围内的小区个数；
所述控制模块设置为： 周期性获取本基站服务范围内的小区的邻区在半 静态调度时使用的时频资源信息；
每一个资源分配模块设置为：与本基站服务范围内的一个小区——对应， 记录对应小区在半静态调度时使用的时频资源信息并上报给所述控制模块； 还在为对应的小区中的集群业务分配时频资源时， 根据所述控制模块获取到 该小区的其他邻区的时频资源信息，优先分配未被其他邻区占用的时频资源。
优选地 ,
所述控制模块设置为：当所述邻区与本小区属于同一基站服务范围内时， 周期性获取到本小区的邻区在半静态调度时使用的时频资源信息， 包括： 所述控制模块在预设的时频资源交互周期到达时， 统计在所述时频资源 交互周期内接收到的所述邻区对应的资源分配模块发来的该邻区在半静态调 度时使用的时频资源信息。
优选地 ,
所述控制模块设置为： 当所述邻区与本小区分属于不同基站的服务范围 内时， 周期性获取到本小区的邻区在半静态调度时使用的时频资源信息， 包 括：
所述控制模块当预设的时频资源交互周期到达时， 将接收到的所述资源 分配模块发来的在所述时频资源交互周期内记录的对应小区在半静态调度时 使用的时频资源信息发送给本小区的邻区的服务基站。
优选地，
所述邻区为预先配置在当前服务小区的邻区列表中的前 N个邻区。 优选地 ,
所述时频资源信息， 包括： 帧号、 子帧号及资源块占用位图。
釆用本发明实施例后，可以在 LTE集群通讯***中减少甚至避免小区间 的同频干扰， 提高***性能， 增强用户感知度。 附图概述
图 1是本发明实施例中在 LTE集群通信***中进行干扰协调的方法流程 图；
图 2 ( a )〜图 2 ( c )分别为本发明应用示例中干扰协调资源分配实现方 式示意图；
图 3是本发明应用示例中针对一个小区进行干扰协调的方法流程图。 本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是， 在 不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互任意组合。 集群用户的主要需求是语音业务和视频媒体流， 这两种业务承载在 LTE ***中时都使用半静态调度的方式， 时频资源相对固定。
利用 LTE集群***的这个特点， 在本实施例中， 一种在 LTE集群通信 ***中进行干扰协调的方法， 如图 1所示， 由基站进行如下操作：
针对服务范围内的每一个小区， 周期性获取到本小区的邻区在半静态调 度时使用的时频资源信息；
在为服务范围内的小区中的集群业务分配时频资源时， 根据获取到该小 区的其他邻区的时频资源信息， 优先分配未被其他邻区占用的时频资源， 从 而达到邻区间干 4尤协调的目的。
当该邻区与本小区属于同一基站服务范围内时， 上述周期性获取到本小 区的邻区在半静态调度时使用的时频资源信息， 具体包括：
当预设的时频资源交互周期到达时， 基站统计在时频资源交互周期内记 录的该邻区在半静态调度时使用的时频资源信息。
当该邻区与本小区分属于不同基站的服务范围内时， 上述周期性获取到 本小区的邻区在半静态调度时使用的时频资源信息， 具体包括：
当预设的时频资源交互周期到达时， 基站将在该时频资源交互周期内记 录的服务范围内的小区在半静态调度时使用的时频资源信息发送给本小区的 邻区的服务基站。
下面用几个应用示例进行进一步说明。
应用示例一
针对每一个基站， 管理员可预先通过网管后台配置本小区的邻区 （即除 本小区外的其他小区）列表， 基站可将邻区列表中的前 N个邻区作为本小区 时频干扰协调的邻区， 也可以将邻区列表中的所有邻区作为本小区时频干扰 协调的邻区， 其中， N为正整数； 还可以通过网管后台预先配置本小区的半 静态调度的相关参数和时频资源交互的周期。
一种在 LTE集群通信***中进行干扰协调的方法，应用到基站对自身服 务范围内的各服务小区的干扰协调， 包括： 步骤 10:基站在每个半静态调度周期中记录或更新其服务范围内的各小 区内每个子帧中每个群组的时频资源占用信息， 这些信息包括： 集群业务占 用的帧号、 子帧号及 RB ( Resource Block, 资源块） bitmap (比特位图） ； 步骤 20: 当时频资源交互的周期到达时， 基站统计服务范围内各小区的 的时频占用信息；
步骤 30: 在为服务范围内的小区分配时频资源时， 优先分配未被该小区 的其它邻区占用的时频资源； 如果除去邻区已经占用的时频资源外， 已经没 有剩余时频资源可供分配给本小区， 那么可以使用其他邻区已经占用的时频 资源。
应用示例二：
针对每一个基站， 管理员可预先通过网管后台配置本小区的邻区 （即除 本小区外的其他小区）列表， 基站可将邻区列表中的前 N个邻区作为本小区 时频干扰协调的邻区， 也可以将邻区列表中的所有邻区作为本小区时频干扰 协调的邻区， 其中， N为正整数； 还可以通过网管后台预先配置本小区的半 静态调度的相关参数和时频资源交互的周期。
一种在 LTE集群通信***中进行干扰协调的方法，应用到对不同基站间 的各小区进行干扰协调， 对于每一个基站， 包括：
步骤 210: 在每个半静态调度周期中记录服务范围内的小区在每个子帧 中每个群组的时频资源占用信息， 这些信息包括： 集群业务占用的帧号、 子 帧号及 RB bitmap;
步骤 220: 当时频资源交互的周期到达时，通过 X2接口将记录的时频资 源占用信息广播给服务范围内的小区的邻区的服务基站；
步骤 230: 当接收到其他基站发来的时频资源占用信息后， 更新自身维 护相应小区的时频资源占用信息；
步骤 240: 在为服务范围内的小区分配时频资源时， 优先分配未被该小 区的其它邻区占用的时频资源， 如果除去邻区已经占用的时频资源外， 已经 没有剩余资源可供本小区分配，那么可以使用其他邻区已经占用的时频资源。 下面用一个具体实例进行说明。
如图 2 ( a ) 、 2 ( b )及 2 ( c )所示， 图中横轴表示时域资源， 纵轴表示 频域资源。 每个时频资源由时域和频域两维资源唯一标识。 每个时频资源中 的数字 K表示该时频资源被群组 K 占用， 其中， K=l , 2 , 3 , 4 , 5。 假设 CellO、 Celll及 Cell2是相邻小区。
在 0时刻 （时域资源 0 ) , CellO中群组 1 占用了频域资源 0-2 , 群组 2 占用了频域资源 3-5; 则在进行资源分配时， Celll中各群组不能占用频域资 源 0-5 , 因此 Celll的服务基站可为 Celll内的群组 1和群组 2分配占用频域 资源 10-15; Cell2中各群组不能占用频域资源 0-5及 10-15 , 因此 Cell2的服 务基站可为 Cell2内的群组 1和群组 2分配占用频域资源 19-24。
在 1时刻 (时域资源 1 ) , CellO中群组 3 占用了频域资源 3-5; 则在进 行资源分配时， Celll中的群组 3不能占用频域资源 3-5 , 因此 Celll的服务 基站为为 Celll 内的群组 3分配占用了频域资源 22-24; Cell2中各群组不能 占用频域资源 3-5及 22-24, 因此 Cell2的服务基站可为 Cell2内的群组 3分 配时占用了频域资源 0-2。
在 2时刻 (时域资源 2 ) , CellO中群组 4占用了频域资源 0-2; 则在进 行资源分配时， Celll中群组 4不能占用频域资源 0-2 , 因此 Celll的服务基 站可为 Celll 内的群组 4分配时占用了频域资源 7-9; Cell2中各群组不能占 用频域资源 0-2及 7-9 , 因此 Cell2的服务基站可为 Cell2内的群组 4分配占 用频域资源 22-24。
在 3时刻 （时域资源 2 ) , CellO中群组 5占用了频域资源 22-24; 则在 进行资源分配时， Celll中群组 5不能占用频域资源 22-24, 因此 Celll的服 务基站可为 Celll 内的群组 5分配占用频域资源 7-9; Cell2中各群组不能占 用频域资源 22-24及 7-9, 因此 Cell2的服务基站可为 Cell2内的群组 5分配 占用频域资源 0-2。
如图 3所示， 对于 CellO的服务基站， 执行步骤如下：
1、维护本小区的时频资源占用情况， 即记录这个半静态调度周期内所有 群组的时频资源， 包括帧号、 子帧号及 RB占用位图；
2、 当时频资源交互的周期到达时，将记录的时频资源占用信息发送给其 他所有邻区， 如发送给 Celll和 Cell2;
3、服务基站接收本小区的其他邻区的服务基站发来的时频资源占用信息， 如接收 Celll和 Cell2的服务基站发来的时频资源占用信息；
4、更新相应邻区的时频资源占用信息， 即记录所有邻区新的时频资源占 用信息；
5、服务基站在为本小区集群业务分配时频资源时，尽量避开其他邻区已 经占用的时频资源， 优先分配未被其他邻区占用的时频资源。
此外， 在本实施例中， 一种基站， 应用于 LTE集群通信***中， 包括： 控制模块和 N个资源分配模块； 其中， N 为正整数， 其值等于本基站服务范 围内的小区个数；
所述控制模块用于周期性获取本基站服务范围内的小区的邻区在半静态 调度时使用的时频资源信息；
每一个资源分配模块与本基站服务范围内的一个小区——对应， 用于记 录对应小区在半静态调度时使用的时频资源信息并上报给所述控制模块； 还 用于在为对应的小区中的集群业务分配时频资源时， 根据所述控制模块获取 到该小区的其他邻区的时频资源信息， 优先分配未被其他邻区占用的时频资 源。
较佳地，
当所述邻区与本小区属于同一基站服务范围内时， 所述控制模块用于周 期性获取到本小区的邻区在半静态调度时使用的时频资源信息， 具体包括： 所述控制模块用于在预设的时频资源交互周期到达时， 统计在所述时频 资源交互周期内接收到的所述邻区对应的资源分配模块发来的该邻区在半静 态调度时使用的时频资源信息。
较佳地， 当所述邻区与本小区分属于不同基站的服务范围内时， 所述控制模块用 于周期性获取到本小区的邻区在半静态调度时使用的时频资源信息， 具体包 括：
所述控制模块用于当预设的时频资源交互周期到达时， 将接收到的所述 资源分配模块发来的在所述时频资源交互周期内记录的对应小区在半静态调 度时使用的时频资源信息发送给本小区的邻区的服务基站。
较佳地，
所述邻区为预先配置在当前服务小区的邻区列表中的前 N个邻区。 较佳地，
所述时频资源信息， 包括： 帧号、 子帧号及资源块占用位图。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 所述程序可以存储于计算机可读存储介质中， 如只读 存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地， 上述实施例中的各模块 /单元可以釆用 硬件的形式实现， 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
以上所述仅为本发明的优选实施例而已， 并非用于限定本发明的保护范 围。 根据本发明的发明内容， 还可有其他多种实施例， 在不背离本发明精神 改变和变形， 凡在本发明的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。
工业实用性
釆用本发明实施例后，可以在 LTE集群通讯***中减少甚至避免小区间 的同频干扰， 提高***性能， 增强用户感知度。

Claims

权 利 要 求 书
1、 一种在 LTE集群通信***中进行干扰协调的方法， 包括： 由基站进 行如下操作：
针对服务范围内的每一个小区， 周期性获取到本小区的邻区在半静态调 度时使用的时频资源信息；
在为服务范围内的小区中的集群业务分配时频资源时， 所述基站根据获 取到该小区的其他邻区的时频资源信息， 优先分配未被其他邻区占用的时频 资源。
2、 如权利要求 1所述的方法， 其中，
当所述邻区与本小区属于同一基站服务范围内时， 所述周期性获取到本 小区的邻区在半静态调度时使用的时频资源信息， 包括：
当预设的时频资源交互周期到达时， 所述基站统计在所述时频资源交互 周期内记录的所述邻区在半静态调度时使用的时频资源信息。
3、 如权利要求 1所述的方法， 其中，
当所述邻区与本小区分属于不同基站的服务范围内时， 所述周期性获取 到本小区的邻区在半静态调度时使用的时频资源信息， 包括：
当预设的时频资源交互周期到达时， 所述基站将在所述时频资源交互周 期内记录的服务范围内的小区在半静态调度时使用的时频资源信息发送给本 小区的邻区的服务基站。
4、 权利要求 1~3中任意一项所述的方法， 其中，
所述邻区为预先配置在当前服务 d、区的邻区列表中的前 N个邻区。
5、 如权利要求 1~3中任意一项所述的方法， 其中，
所述时频资源信息， 包括： 帧号、 子帧号及资源块占用位图。
6、 一种基站， 应用于长期演进集群通信***中， 包括： 控制模块和 N 个资源分配模块； 其中， N 为正整数， 其值等于本基站服务范围内的小区个 数；
所述控制模块设置为： 周期性获取本基站服务范围内的小区的邻区在半 静态调度时使用的时频资源信息；
每一个资源分配模块设置为：与本基站服务范围内的一个小区——对应， 记录对应小区在半静态调度时使用的时频资源信息并上报给所述控制模块； 还在为对应的小区中的集群业务分配时频资源时， 根据所述控制模块获取到 该小区的其他邻区的时频资源信息，优先分配未被其他邻区占用的时频资源。
7、 如权利要求 6所述的基站， 其中，
所述控制模块设置为：当所述邻区与本小区属于同一基站服务范围内时， 周期性获取到本小区的邻区在半静态调度时使用的时频资源信息， 包括： 所述控制模块在预设的时频资源交互周期到达时， 统计在所述时频资源 交互周期内接收到的所述部区对应的资源调度模块发来的该邻区在半静态调 度时使用的时频资源信息。
8、 如权利要求 6所述的基站， 其中，
所述控制模块设置为： 当所述邻区与本小区分属于不同基站的服务范围 内时， 周期性获取到本小区的邻区在半静态调度时使用的时频资源信息， 包 括：
所述控制模块当预设的时频资源交互周期到达时， 将接收到的所述资源 调度模块发来的在所述时频资源交互周期内记录的对应小区在半静态调度时 使用的时频资源信息发送给本小区的邻区的服务基站。
9、 权利要求 6~8中任意一项所述的基站， 其中，
所述邻区为预先配置在当前服务小区的邻区列表中的前 N个邻区。
10、 如权利要求 6~8中任意一项所述的基站， 其中，
所述时频资源信息， 包括： 帧号、 子帧号及资源块占用位图。
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