WO2011088637A1 - 一种中继网络中小区选择与切换的方法及系统 - Google Patents
一种中继网络中小区选择与切换的方法及系统 Download PDFInfo
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- WO2011088637A1 WO2011088637A1 PCT/CN2010/071203 CN2010071203W WO2011088637A1 WO 2011088637 A1 WO2011088637 A1 WO 2011088637A1 CN 2010071203 W CN2010071203 W CN 2010071203W WO 2011088637 A1 WO2011088637 A1 WO 2011088637A1
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- base station
- relay station
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 230000000977 initiatory effect Effects 0.000 claims description 26
- 230000003111 delayed effect Effects 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 238000004873 anchoring Methods 0.000 abstract description 4
- 230000003993 interaction Effects 0.000 abstract description 3
- 230000011664 signaling Effects 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
Definitions
- the present invention relates to a wireless communication network, and more particularly to a method and system for cell selection and handover based on synchronization setting in a relay network with a relay station (RS).
- RS relay station
- a relay station is proposed to solve the coverage and throughput of users in the above-mentioned coverage defects. And other issues.
- the use of a relay station reduces the complexity of system startup compared to adding a base station in an area where coverage defects are present, while further reducing the complexity of the overall system by minimizing the complexity of the relay station.
- a relay station adds/removes a relay station from an existing network, adds/removes a relay station on an existing communication path by scanning, environment monitoring, and ranging, and a new relay station logs in/re-login, the relay station and all users attached to the relay station
- the user equipment UE needs to perform batch cell selection and handover. If each user terminal specified in the current specification performs cell selection and handover operations separately, the cell selection of the user terminal in the relay network will be significantly increased. With the time of switching. Summary of the invention
- the main object of the present invention is to provide a method and system for cell selection and handover in a relay network, which are used to solve a situation in which a relay station is removed, re-registered, etc., a relay station and a user terminal attached to the relay station.
- a relay station is removed, re-registered, etc., a relay station and a user terminal attached to the relay station.
- a method for cell selection and handover in a relay network comprising:
- selection and handover identifier is used to control a synchronization mode between the base station and the relay station for selecting and switching data
- the serving base station or the relay station determines an indicator for initiating the cell selection and handover request and sets a corresponding threshold of the indicator
- the serving base station or the relay station sets the selection and handover identifier corresponding to the anchor base station or the relay station to a synchronization state, and sets the selection and handover identifier of the base station or the relay station other than the anchor base station or the relay station to an asynchronous or delayed synchronization state; the user terminal specifies The switching point is connected to the anchored base station or relay station.
- the indicator of the initiating cell selection and handover request is a combination of one or more of the following indicators: inter-cell interference, load status, throughput, and peak rate.
- the step of initializing the selection and the handover identifier is further included, where the serving base station or the relay station sets the initial value of the selection and the handover identifier corresponding to all the adjacent base stations or the relay station to the synchronization state.
- the measuring is specifically: measuring, by the serving base station or the relay station, the indicator of the neighboring base station or the relay station, when the measured value of the indicator of the neighboring base station or the relay station reaches a threshold
- the anchor base station or the relay station is determined by the serving base station or the relay station for the user terminal; after determining the anchor base station or the relay station, the serving base station or the relay station initiates a cell selection and handover request.
- the serving base station or the relay station sets the indicator of the cell selection and the handover request and the corresponding threshold, and then sends the indicator and the threshold to the user terminal; the user terminal measures the adjacent base station according to the indicator and its corresponding threshold. Or a relay station, and determining an anchor base station or a relay station according to the comparison result; after determining the anchor base station or the relay station, the user terminal initiates a cell selection and handover request to the serving base station or the relay station, where the request carries the anchor base station or the relay station selected by the user terminal
- the present invention also provides a system for cell selection and handover in a relay network, the system comprising:
- a setting module located at a serving base station or a relay station, configured to set a selection and handover identifier, set an indicator for initiating a cell selection and handover request, and a corresponding threshold;
- a measuring module configured to measure the indicator of a neighboring base station or a relay station
- An anchor point determining module configured to determine an anchor base station or a relay station according to a comparison result between the measurement result of the measurement module and the threshold of the indicator;
- a handover initiation module configured to initiate a cell selection and handover request after determining the anchor base station or the relay station;
- a handover execution module configured to set a selection and a handover identifier corresponding to the anchor base station or the relay station to a synchronization state after initiating the cell selection and handover request, and select a corresponding base station or a relay station other than the anchor base station or the relay station
- the handover identity is set to an asynchronous or delayed synchronization state; cell selection and handover are performed.
- the indicator of the initiating cell selection and handover request is a combination of one or more of the following indicators: a small interval interference, a load condition, a throughput, and a peak rate.
- the measurement module, the anchor point determination module, and the selection and handover initiation module are located at a serving base station or a relay station, and the measurement is performed by the serving base station or the relay station, and the anchor base station or the middle station is determined. The station is followed by a cell selection and handover request after determining the anchor base station or relay station.
- the measurement module, the anchor point determination module, and the selection and handover initiation module are located at the user terminal; the serving base station or the relay station sends the indicator and the corresponding threshold to the user terminal, and the user terminal performs
- the anchor base station or the relay station is measured and determined, and after determining the anchor base station or the relay station, a cell selection and handover request is initiated, and the request carries the anchor base station or the relay station selected by the user terminal.
- the invention reduces the number of signaling interactions negotiated between the serving base station or the relay station, the anchor base station or the relay station, and the user terminal by selecting the setting of the handover identifier, thereby reducing the delay of selection and handover; the invention is anchored by
- the selection and handover identifier corresponding to the neighboring base station or the relay station outside the base station or the relay station are set to an asynchronous or delayed synchronization state, and the inter-cell interference of the partial base station or the relay station to the user terminal is increased, so that the measurement result of the user terminal is synchronized with the same.
- the base station or the relay station becomes the first choice when the serving base station or the relay station selects the anchor base station or the relay station, which reduces the probability of mis-selection and handover.
- FIG. 1 is a flowchart of processing for active cell selection and handover initiated by a base station or a relay station according to performance reasons such as interference, load status, throughput, and peak rate;
- FIG. 2 is a flowchart of a process for passive cell selection and handover initiated by a user terminal according to the measurement of the present invention
- FIG. 3 is a system structural diagram of cell selection and handover in a relay network according to the present invention. detailed description
- a selection and handover identifier is set at a serving base station or a relay station, and the selection and handover identifier is used to control synchronization between the base station and the relay station for selecting and switching data.
- the identifier has three values, namely: synchronous, asynchronous, and delayed synchronization states, where the base station includes a base station that the relay station is serving and a neighboring cell base station.
- the cell selection and handover of the user terminal are classified into active mode and passive mode.
- the active mode refers to the performance requirement that the user terminal detects that the inter-cell interference is too large, or the current transmission mode cannot meet the throughput and peak rate of the user terminal.
- the passive mode is a cell selection and handover mode initiated by the base station due to network load and the like.
- the serving base station or the relay station first needs to determine.
- the anchor base station or the relay station to be selected and switched, and the selection and handover identifier corresponding to the anchor base station or the relay station are set to the synchronization state, and the selection and handover identifiers corresponding to the other non-anchor base stations or the relay station are set to the asynchronous or delayed synchronization state.
- the serving base station or the relay station negotiates with the anchor base station or the relay station, and the anchor base station or the relay station receives the selection and handover request initiated by the user terminal and feeds back the response information to complete selection and handover.
- the invention reduces the number of signaling interactions negotiated between the serving base station or the relay station, the anchor base station or the relay station, and the user terminal, thereby reducing the delay of selection and handover; when anchoring the base station or
- the selection of the base station or the relay station other than the relay station and the handover identifier are set to asynchronous or delayed synchronization, the inter-cell interference of the part of the base station or the relay station to the user terminal is increased, so that the measurement result of the user terminal is synchronized with the base station or
- the relay station becomes the first choice when the serving base station or the relay station selects the anchor base station or the relay station, which reduces the probability of mis-selection and handover.
- the invention divides cell selection and handover in a relay network into two types:
- a base station or a relay station that is providing services, preparing for execution selection and handover is referred to as a serving base station or a service relay station (referred to as a serving base station or a relay station), and FIG. 1 is a service base station or a relay station according to the present invention due to interference, load conditions, throughput.
- Cell selection due to performance reasons such as quantity and peak rate
- the process of selecting and switching requests, the specific steps are as follows:
- FIG. 1 is a flowchart of a process for active cell selection and handover initiated by a base station or a relay station according to performance reasons such as interference, load status, throughput, and peak rate.
- the specific steps are as follows: Step 101: The serving base station or the relay station determines the originating cell selection. Main indication with the switch request;
- the main indicator of the cell selection and handover request may be a combination of one or more of the following indicators: a small interval interference, a base station load condition, a base station throughput, a base station peak rate, and the like, but is not limited thereto.
- Step 102 The serving base station or the relay station sets a comparison threshold of the main indicator of the cell selection and the handover;
- the serving base station or the relay station may perform a cell selection and handover according to a certain policy. For example, when the serving base station is overloaded, it may decide whether to initiate selection and handover according to the set threshold.
- Step 103 The serving base station or the relay station sets an initial value of the selection and switching identifier corresponding to all neighboring base stations or relay stations to a synchronization state;
- Step 104 The serving base station or the relay station measures main indicators of cell selection and handover of the neighboring base station or the relay station;
- Step 105 The serving base station or the relay station compares the indicator threshold with the measured value, determines the anchor base station or the relay station according to the comparison result, and sets the determined anchor base station or the relay station selection and the handover identifier to a synchronization state;
- Step 106 The serving base station or the relay station sets the selection and the handover identifier of the determined neighboring base station or the relay station other than the anchor base station or the relay station to an asynchronous or delayed synchronization state;
- Step 107 The serving base station or the relay station initiates a selection and handover request, and the serving base station or the relay station negotiates with the determined anchor base station or the relay station and the user terminal.
- Step 108 The serving base station or the relay station disconnects from the user terminal, and the user terminal accesses the anchor base station or the relay station at the designated switching point;
- Step 109 The serving base station or the relay station resets the selection and switching identifiers for the switched base station or the relay station.
- Step 201 The serving base station or the relay station determines a primary indicator for initiating a cell selection and handover request
- the main indicator of the cell selection and handover request is a combination of one or more of the following indicators: inter-cell interference, load condition, throughput, peak rate, etc., but is not limited thereto.
- Step 202 The serving base station or the relay station sets a comparison threshold of the main indicator of the cell selection and the handover, and sends the determined indicator and the corresponding threshold to the user terminal.
- Step 203 The serving base station or the relay station sets an initial value of the selection and switching identifier corresponding to all neighboring base stations or relay stations to a synchronization state;
- Step 204 The user terminal measures a main indicator of cell selection and handover determined by the base station or the relay station, and the user terminal compares the indicator threshold with the measured value, determines an anchor base station or a relay station according to the comparison result, and the user terminal initiates a cell to the serving base station or the relay station. Selecting and switching the request, the request carrying the anchor base station or the relay station selected by the user terminal;
- Step 205 After receiving the selection and handover request reported by the user terminal, the serving base station or the relay station sets the selection and handover identifier of the neighboring base station or the relay station other than the anchor base station or the relay station determined by the user terminal to an asynchronous or delayed synchronization state;
- Step 206 After the serving base station or the relay station negotiates with the determined anchor base station or the relay station and the user terminal, the serving base station or the relay station disconnects from the user terminal, and the user terminal accesses the anchor base station or the relay station at the designated switching point;
- Step 207 The base station or the relay station resets the selection and handover identifiers for the switched user terminal.
- the present invention also provides a system for selecting and switching a cell in a relay network.
- the system includes: a setting module, a measurement module, an anchor point determining module, a selection and switching initiation module, and a selection and Switch the execution module.
- the setting module is located at the serving base station or the relay station, and is configured to set an indicator for initiating cell selection and handover request and a corresponding threshold; and set a selection and a handover identifier corresponding to the adjacent base station or the relay station to a synchronization state before the measurement.
- a measuring module configured to measure the indicator of a neighboring base station or a relay station
- An anchor point determining module configured to determine an anchor base station or a relay station according to a comparison result between the measurement result of the measurement module and the threshold of the indicator;
- a handover initiation module configured to initiate a cell selection and handover request after determining the anchor base station or the relay station;
- a handover execution module configured to set a selection and a handover identifier corresponding to the anchor base station or the relay station to a synchronization state after initiating the cell selection and handover request, and select a corresponding base station or a relay station other than the anchor base station or the relay station
- the handover identity is set to an asynchronous or delayed synchronization state; cell selection and handover are performed.
- the indicator of the originating cell selection and handover request is a combination of one or more of the following indicators: inter-cell interference, load condition, throughput, peak rate. For different measurement subjects, these indicators correspond to the indicator values of different measurement subjects.
- the active and passive modes are switched.
- the measurement module, the anchor point determination module, and the selection and handover initiation module are located at the serving base station or the relay station.
- the serving base station or relay station performs measurements and determines an anchor base station or relay station, and initiates a cell selection and handover request after determining the anchor base station or relay station.
- the measurement module, the anchor point determination module, and the selection and handover initiation module are located at the user terminal; the serving base station or the relay station sets the indicator and the corresponding threshold The value is sent to the user terminal, and the user terminal initiates a cell selection and handover request according to the determined anchor base station or relay station.
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Description
一种中继网络中小区选择与切换的方法及系统 技术领域
本发明涉及无线通信网络， 尤其涉及一种带有中继站 （ Relay Station, RS ) 的中继网络中基于同步设置的小区选择与切换的方法及系统。 背景技术
在下一代的宽带无线通信网络中， 解决基站 （Base Station, BS ) 范围 内诸如地铁、 隧道、 地下等室内覆盖模型、 一些临时应用模型、 移动的交 通工具等应用模型， 以及小区边缘的用户的覆盖和吞吐量等问题将面临严 峻的挑战。
目 前， 在 IEEE 802.16j、 高级移动通信 ( International Mobile Telecommunications , ΙΜΤ- Advanced )、 WINNER ( Wireless World Initiative New Radio )中都提出采用中继站的方式来解决上述存在覆盖缺陷的场景中 用户的覆盖和吞吐量等问题。 与在存在覆盖缺陷的区域中增加基站相比， 使用中继站的方式降低了系统启动的复杂度， 同时通过使中继站复杂度的 最小化可以进一步降低整个系统的复杂度。
当中继站因现有网络中添加 /删除中继站、 通过扫描、 环境监听和测距 在现有通信路径上添加 /移除中继站、 新中继站登录 /重新登录时， 中继站及 附属于这一中继站的所有用户终端（ User Equipment, UE )都需要进行批量 的小区选择与切换， 如果按照当前规范指定的每个用户终端单独进行小区 选择与切换操作， 那么， 将显著地增加中继网络中用户终端的小区选择与 切换的时间。
发明内容
有鉴于此， 本发明的主要目的在于提供一种中继网络中小区选择与切 换的方法及系统， 用于解决中继站被移除、 重新登录等情况下， 中继站及 附属于这一中继站的用户终端进行批量的小区选择与切换时， 增加了中继 网络中用户终端进行小区选择与切换时间的技术问题。
为达到上述目的， 本发明的技术方案是这样实现的：
一种中继网络中小区选择与切换的方法， 该方法包括：
在服务基站或中继站设置选择与切换标识， 所述选择与切换标识用于 控制基站与中继站之间选择与切换数据的同步方式；
服务基站或中继站确定发起小区选择与切换请求的指标并设置所述指 标的对应阈值；
对邻接基站或中继站的所述指标进行测量， 当邻接基站或中继站的所 述指标的测量值达到阈值时， 确定锚定基站或中继站， 并发起小区选择与 切换请求；
服务基站或中继站将锚定基站或中继站对应的选择与切换标识设置为 同步状态， 将锚定基站或中继站之外的基站或中继站的选择与切换标识设 置为异步或延迟同步状态； 用户终端在指定的切换点接入锚定的基站或中 继站。
进一步地， 所述发起小区选择与切换请求的指标为下述指标中的一种 或多种的组合： 小区间干扰、 负载状况、 吞吐量、 峰值速率。
进一步地 , 在所述测量之前还包括对选择与切换标识的初始化步骤 , 具体为： 服务基站或中继站将所有邻接基站或中继站对应的选择与切换标 识的初始值设置为同步状态。
进一步地， 所述测量具体为： 由服务基站或中继站测量所述邻接基站 或中继站的所述指标， 当邻接基站或中继站的所述指标的测量值达到阈值
时， 由服务基站或中继站为用户终端确定锚定基站或中继站； 在确定锚定 基站或中继站后， 所述服务基站或中继站发起小区选择与切换请求。
进一步地， 所述服务基站或中继站设置发起小区选择与切换请求的指 标以及对应的阈值后， 将所述指标以及阈值下发给用户终端； 由用户终端 根据所述指标及其对应阈值测量邻接基站或中继站， 并根据比对结果确定 锚定基站或中继站； 在确定锚定基站或中继站后由用户终端向服务基站或 中继站发起小区选择与切换请求， 请求中携带用户终端选择的锚定基站或 中继站
基于上述方法 , 本发明还提出一种中继网络中小区选择与切换的系统， 该系统包括：
设置模块， 位于服务基站或中继站， 用于设置选择与切换标识、 设置 发起小区选择与切换请求的指标以及对应的阈值；
测量模块， 用于对邻接基站或中继站的所述指标进行测量；
锚定点确定模块， 用于依据测量模块的测量结果与所述指标的阈值的 比对结果确定锚定基站或中继站；
选择与切换发起模块， 用于在确定锚定基站或中继站后发起小区选择 与切换请求；
选择与切换执行模块， 用于在发起小区选择与切换请求后将锚定基站 或中继站对应的选择与切换标识设置为同步状态， 将锚定基站或中继站之 外的其它基站或中继站对应的选择与切换标识设置为异步或延迟同步状 态； 执行小区的选择与切换。
进一步地， 所述发起小区选择与切换请求的指标为下述指标中的一种 或多种的组合： 小区间千扰、 负载状况、 吞吐量、 峰值速率。
进一步地， 所述测量模块、 锚定点确定模块及选择与切换发起模块位 于服务基站或中继站， 由服务基站或中继站执行测量并确定锚定基站或中
继站， 并在确定锚定基站或中继站后发起小区选择与切换请求。
进一步地， 所述测量模块、 锚定点确定模块及选择与切换发起模块位 于用户终端； 所述服务基站或中继站将所述指标以及对应的阈值下发给所 述用户终端， 由所述用户终端执行测量并确定锚定基站或中继站， 并在确 定锚定基站或中继站后发起小区选择与切换请求， 请求中携带用户终端选 择的锚定基站或中继站。
本发明通过选择与切换标识的设置， 减少了服务基站或中继站、 锚定 基站或中继站、 用户终端之间协商的信令交互次数， 进而降低了选择与切 换的时延； 本发明通过将锚定基站或中继站之外邻接基站或中继站对应的 选择与切换标识设置为异步或延迟同步状态， 增加了对该部分基站或中继 站对用户终端的小区间干扰， 从而使用户终端的测量结果中与其同步的基 站或中继站成为服务基站或中继站选择锚定基站或中继站时的首选， 降低 了误选择与切换的概率。 附图说明
图 1 为本发明基站或中继站因干扰、 负载状况、 吞吐量、 峰值速率等 性能原因发起的主动式小区选择与切换的处理流程图；
图 2 为本发明用户终端通过自身的测量发起的被动式小区选择与切换 的处理流程图；
图 3为本发明中继网络中小区选择与切换的系统结构图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚明白， 以下举实施例并 参照附图， 对本发明进一步详细说明。
本发明一具体实施例中 , 在服务基站或中继站设置选择与切换标识， 该选择与切换标识用于控制基站与中继站之间选择与切换数据的同步方
式， 该标识有三种取值， 分别为： 同步、 异步及延迟同步状态， 其中， 基 站包括中继站正在服务的基站以及邻小区基站。 用户终端的小区选择与切 换分为主动方式和被动方式两种， 主动方式是指因用户终端检测到小区间 干扰过大、 或当前的传输方式不能满足用户终端的吞吐量、 峰值速率等性 能需求时， 由用户终端发起小区选择与切换请求的方式； 被动方式是因网 络负载等原因由基站发起的小区选择与切换的方式， 当基站发起小区选择 与切换请求时， 服务基站或中继站首先需要确定将要选择与切换的锚定基 站或中继站， 并将锚定基站或中继站对应的选择与切换标识设置为同步状 态， 其它非锚定基站或中继站对应的选择与切换标识设置为异步或延迟同 步状态， 服务基站或中继站与锚定基站或中继站协商， 锚定基站或中继站 接收用户终端发起的选择与切换请求并反馈响应信息完成选择与切换。 本 发明通过选择与切换标识的设置， 减少了服务基站或中继站、 锚定基站或 中继站、 用户终端之间协商的信令交互次数， 进而降低了选择与切换的时 延； 当把锚定基站或中继站之外的被测基站或中继站的选择与切换标识设 置为异步或延迟同步时， 会增加该部分基站或中继站对用户终端的小区间 干扰， 从而使用户终端的测量结果中与其同步的基站或中继站成为服务基 站或中继站选择锚定基站或中继站时的首选， 降低了误选择与切换的概率。
本发明将中继网络中的小区选择与切换分为两种类型：
( 1 )基站或中继站因干扰、 负载状况、 吞吐量、 峰值速率等性能原因 发起的主动式小区选择与切换请求；
( 2 )用户终端（ UE )通过自身的测量发起的被动式小区选择与切换请 求；
本发明中， 将正在提供服务、 准备执行选择与切换的基站或中继站称 为服务基站或服务中继站（筒称服务基站或中继站）， 图 1为本发明服务基 站或中继站因干扰、 负载状况、 吞吐量、 峰值速率等性能原因发起小区选
择与切换请求的处理流程， 具体步骤如下：
图 1 为本发明基站或中继站因干扰、 负载状况、 吞吐量、 峰值速率等 性能原因发起的主动式小区选择与切换的处理流程图， 具体步骤如下： 步骤 101 : 服务基站或中继站确定发起小区选择与切换请求的主要指 ；
所述小区选择与切换请求的主要指标可为以下指标中的一种或多种的 组合： 小区间干扰、 基站负载状况、 基站吞吐量、 基站峰值速率等指标参 数， 但不限于此。
步骤 102:服务基站或中继站设置小区选择与切换的主要指标的对比阈 值；
服务基站或中继站执行小区选择与切换可遵循一定的策略， 例如， 当 服务基站负载过重时， 可根据设定的阈值决定是否发起选择与切换。
步骤 103:服务基站或中继站将所有邻接基站或中继站对应的选择与切 换标识的初始值设置为同步状态；
步骤 104:服务基站或中继站测量邻接基站或中继站的小区选择与切换 的主要指标；
步驟 105: 服务基站或中继站将指标阈值与测量值进行对比， 根据比对 结果确定锚定基站或中继站， 并将确定的锚定基站或中继站的选择与切换 标识设置为同步状态；
步骤 106:服务基站或中继站将所确定的锚定基站或中继站之外的其它 邻接基站或中继站的选择与切换标识设置为异步或延迟同步状态；
步骤 107: 服务基站或中继站发起选择与切换请求， 服务基站或中继站 与所确定的锚定基站或中继站、 用户终端协商；
步骤 108: 服务基站或中继站断开与用户终端的连接， 用户终端在指定 的切换点接入锚定基站或中继站；
步骤 109:服务基站或中继站为切换后的基站或中继站重新设置选择与 切换标识；
图 2 为本发明用户终端通过自身的测量发起的被动式小区选择与切换 请求包括如下的步骤：
步骤 201 : 服务基站或中继站确定发起小区选择与切换请求的主要指 标；
所述小区选择与切换请求的主要指标为下述指标中的一种或多种的组 合： 小区间干扰、 负载状况、 吞吐量、 峰值速率等， 但不限于此。
步骤 202:服务基站或中继站设置小区选择与切换的主要指标的对比阈 值， 并将所确定的指标和对应的阈值下发给用户终端；
步骤 203:服务基站或中继站将所有邻接基站或中继站对应的选择与切 换标识的初始值设置为同步状态；
步骤 204:用户终端测量基站或中继站确定的小区选择与切换的主要指 标， 用户终端将指标阈值与测量值进行对比， 根据比对结果确定锚定基站 或中继站， 用户终端向服务基站或中继站发起小区选择与切换请求， 请求 中携带用户终端选择的锚定基站或中继站；
步驟 205: 服务基站或中继站接收到用户终端上报的选择与切换请求 后， 将用户终端确定的锚定基站或中继站之外的其它邻接基站或中继站的 选择与切换标识设置为异步或延迟同步状态；
步骤 206: 服务基站或中继站与所确定的锚定基站或中继站、 用户终端 协商后， 服务基站或中继站断开与用户终端的连接， 用户终端在指定的切 换点接入锚定的基站或中继站；
步骤 207: 基站或中继站为切换后的用户终端重新设置选择与切换标 识；
上述实施例并非用以限定本发明， 任何本领域的技术人员， 在不脱离
本发明的精神和范围内， 所作的修改均包含在本申请的范围内。
基于上述方法， 本发明还提出一种中继网络中小区选择与切换的系统， 如图 3 所示， 该系统包括： 设置模块、 测量模块、 锚定点确定模块、 选择 与切换发起模块及选择与切换执行模块。
设置模块， 位于服务基站或中继站， 用于设置发起小区选择与切换请 求的指标以及对应的阈值； 以及在测量前将邻接基站或中继站对应的选择 与切换标识设置为同步状态。
测量模块， 用于对邻接基站或中继站的所述指标进行测量；
锚定点确定模块， 用于依据测量模块的测量结果与所述指标的阈值的 比对结果确定锚定基站或中继站；
选择与切换发起模块， 用于在确定锚定基站或中继站后发起小区选择 与切换请求；
选择与切换执行模块， 用于在发起小区选择与切换请求后将锚定基站 或中继站对应的选择与切换标识设置为同步状态， 将锚定基站或中继站之 外的其它基站或中继站对应的选择与切换标识设置为异步或延迟同步状 态； 执行小区的选择与切换。
所述发起小区选择与切换请求的指标为下述指标中的一种或多种的组 合： 小区间干扰、 负载状况、 吞吐量、 峰值速率。 针对不同的测量主体， 这些指标分别对应不同测量主体的指标值。
从基站或中继站侧来看， 分为主动式和被动式两种方式的小区切换； 在主动式切换场景下， 所述测量模块、 锚定点确定模块及选择与切换 发起模块位于服务基站或中继站， 由服务基站或中继站执行测量并确定锚 定基站或中继站， 并在确定锚定基站或中继站后发起小区选择与切换请求。
在被动式切换场景下， 所述测量模块、 锚定点确定模块及选择与切换 发起模块位于用户终端； 所述服务基站或中继站将所述指标以及对应的阈
值下发给所述用户终端， 所述用户终端依据确定的锚定基站或中继站发起 小区选择与切换请求。
Claims
1、一种中继网络中小区选择与切换的方法， 其特征在于， 该方法包括： 在服务基站或中继站设置选择与切换标识， 所述选择与切换标识用于 控制基站与中继站之间选择与切换数据的同步方式；
服务基站或中继站确定发起小区选择与切换请求的指标并设置所述指 标的对应阈值；
对邻接基站或中继站的所述指标进行测量， 当邻接基站或中继站的所 述指标的测量值达到阈值时， 确定锚定基站或中继站， 并发起小区选择与 切换请求；
服务基站或中继站将所述锚定基站或中继站对应的选择与切换标识设 置为同步状态， 将所述锚定基站或中继站之外的基站或中继站的选择与切 换标识设置为异步或延迟同步状态； 用户终端在指定的切换点接入锚定的 基站或中继站。
2、 根据权利要求 1所述的方法， 其特征在于， 所述发起小区选择与切 换请求的指标为下述指标中的一种或多种的组合： 小区间干 ·ί尤、 负载状况、 吞吐量、 峰值速率。
3、 根据权利要求 2所述的方法， 其特征在于， 在所述测量之前还包括 对选择与切换标识的初始化步骤， 具体为： 服务基站或中继站将所有邻接 基站或中继站对应的选择与切换标识的初始值设置为同步状态。
4、 根据权利要求 1或 2所述的方法， 其特征在于， 所述测量具体为： 由服务基站或中继站测量所述邻接基站或中继站的所述指标， 当邻接 基站或中继站的所述指标的测量值达到阔值时， 由服务基站或中继站为用 户终端确定锚定基站或中继站； 在确定锚定基站或中继站后， 所述服务基 站或中继站发起小区选择与切换请求。
5、 根据权利要求 2所述的方法， 其特征在于， 所述服务基站或中继站 设置发起小区选择与切换请求的指标以及对应的阈值后， 将所述指标以及 对应阈值下发给用户终端； 由用户终端根据所述指标及对应阈值测量邻接 基站或中继站， 并根据比对结果确定锚定基站或中继站； 在确定锚定基站 或中继站后由用户终端向服务基站或中继站发起小区选择与切换请求， 请 求中携带用户终端选择的锚定基站或中继站。
6、一种中继网络中小区选择与切换的系统， 其特征在于， 该系统包括： 设置模块， 位于服务基站或中继站， 用于设置选择与切换标识、 设置 发起小区选择与切换请求的指标以及对应的阔值；
测量模块， 用于对邻接基站或中继站的所述指标进行测量；
锚定点确定模块， 用于依据测量模块的测量结果与所述指标的阈值的 比对结果确定锚定基站或中继站；
选择与切换发起模块， 用于在确定锚定基站或中继站后发起小区选择 与切换请求；
选择与切换执行模块， 用于在发起小区选择与切换请求后将锚定基站 或中继站对应的选择与切换标识设置为同步状态， 将锚定基站或中继站之 外的其它基站或中继站对应的选择与切换标识设置为异步或延迟同步状 态； 执行小区的选择与切换。
7、 根据权利要求 6所述的系统， 其特征在于， 所述发起小区选择与切 换请求的指标为下述指标中的一种或多种的组合： 小区间干^^ 负载状况、 吞吐量、 峰值速率。
8、 根据权利要求 7所述的系统， 其特征在于， 所述测量模块、 锚定点 确定模块及选择与切换发起模块位于服务基站或中继站， 由服务基站或中 继站执行测量并确定锚定基站或中继站， 并在确定锚定基站或中继站后发 起小区选择与切换请求。
9、 根据权利要求 7所述的系统， 其特征在于， 所述测量模块、 锚定点 确定模块及选择与切换发起模块位于用户终端； 所述服务基站或中继站将 所述指标以及对应的阈值下发给所述用户终端， 由所述用户终端执行测量 并确定锚定基站或中继站， 并在确定锚定基站或中继站后发起小区选择与 切换请求， 请求中携带用户终端选择的锚定基站或中继站。
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