WO2011079665A1 - 用于集群通信系统的软切换小区指派方法及基站控制器 - Google Patents

用于集群通信系统的软切换小区指派方法及基站控制器 Download PDF

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Publication number
WO2011079665A1
WO2011079665A1 PCT/CN2010/079012 CN2010079012W WO2011079665A1 WO 2011079665 A1 WO2011079665 A1 WO 2011079665A1 CN 2010079012 W CN2010079012 W CN 2010079012W WO 2011079665 A1 WO2011079665 A1 WO 2011079665A1
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WIPO (PCT)
Prior art keywords
cells
cell
pilot
bsc
list
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PCT/CN2010/079012
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English (en)
French (fr)
Inventor
王凯
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP10840454.2A priority Critical patent/EP2464170A4/en
Publication of WO2011079665A1 publication Critical patent/WO2011079665A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0083Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085Hand-off measurements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0058Transmission of hand-off measurement information, e.g. measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/16Performing reselection for specific purposes
    • H04W36/18Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection

Definitions

  • the present invention relates to the field of communications, and in particular to a soft handover cell assignment method and a base station controller (Base Station Controller) for a trunking communication system. , referred to as BSC).
  • BSC Base Station Controller
  • BACKGROUND With the development of CDMA (Code Division Multiple Access) trunking communication technology, how to improve the assignment of a CDMA cluster system into a soft handover scheme has become a key issue in the industry.
  • an assignment method capable of supporting a soft handover cell of a single user is provided, in which the BSC is responsive to a pilot environment measurement from a single user, and the user is assigned the report domain. All cells indicated or a specific number of cells.
  • the existing trunking communication system there are multiple users under the access cell of the cluster service, and the distribution of each user's cell and its environment are also different, and the pilot environment of the above 4 ⁇ is measured in the advertising domain.
  • the cells carried are also different from each other.
  • the inventors have found that when the cell assignment is performed using the assignment method of the above-described conventional predetermined communication system, since the BSC can only respond to the pilot environment measurement report domain from a single user, it cannot respond to different users of the cluster communication system.
  • the pilot environment measures 4 reporting domains.
  • An object of the present invention is to provide a soft handover cell assignment method and a base station controller for a trunking communication system, to solve the related art, in which the BSC of the trunking communication system cannot respond to different guides of multiple users in the trunking communication system.
  • the frequency environment measures the problem of the reporting domain.
  • a soft handover cell assignment method for a trunking communication system comprising: receiving, by a base station controller, a pilot environment measurement report field from one or more terminal UEs in a scheduling period; The BSC selects a predetermined number of cells from the cells indicated by all the pilot environment measurement report fields received in the scheduling period; the BSC transmits a broadcast channel assignment message carrying information of the predetermined number of cells to one or more UEs in the scheduling period.
  • the predetermined number is less than the number of searchers for each of the one or more UEs.
  • selecting, by the BSC, a predetermined number of cells from the cells indicated by all the pilot environment measurement report fields received in the scheduling period includes: performing, by the BSC, one or more UEs according to a sequence of receiving times of all the pilot environment measurement report domains. Sorting, obtaining the sorted UE list; selecting step: the BSC determining whether the number N of cells in the cell indicated by the pilot environment measurement report field of the current UE in the UE list that meets the predetermined condition is greater than or equal to the predetermined remaining number M, and if so, Then, the M cells are selected from the cells that meet the predetermined conditions.
  • the predetermined condition includes: the carrier frequency of the cell is the same as the carrier frequency of the current cell, the geographic location of the cell is adjacent to the source cell, and the cell is not selected.
  • the selection step is performed for the first time, the current UE is the first in the UE list. For one UE, the predetermined remaining number M is equal to the predetermined number.
  • selecting the M cells from the cells that meet the predetermined condition includes: selecting, according to the pilot strength of the cell, the cell according to the predetermined condition Sort to small, get the sorted cell list; select the top M cells in the cell list.
  • selecting the M cells from the cells that meet the predetermined condition includes: selecting, according to the pilot strength of the cell, the cell according to the predetermined condition Sort to small, get the sorted cell list; select the top M cells in the cell list.
  • the process of sorting the cells according to the predetermined condition according to the pilot strength of the cell if there are two or more cells whose pilot strengths are the same, according to the pilot strength provided by the operator. The order of the list sorts two or more cells.
  • a base station controller including: a receiving module, configured to receive a pilot environment measurement report field from each of one or more terminal UEs in one scheduling period; And a method for selecting a predetermined number of cells from the cells indicated by all the pilot environment measurement report fields in the received scheduling period, where the sending module is configured to send, to the one or more UEs, the broadcast channel carrying the information of the predetermined cell in the scheduling period. Assign a message.
  • the predetermined number is less than the number of searchers for each of the one or more UEs.
  • the selecting module includes: a time sorting module, configured to sort one or more UEs according to a sequence of receiving time of all the pilot environments to obtain a sorted UE list; and a judging module, configured to: Determining whether the number N of cells in the cell indicated by the pilot environment measurement report field of the current UE in the UE list is greater than or equal to a predetermined remaining number M, where the predetermined condition includes: a carrier frequency of the cell and a current cell If the frequency is the same, the geographical location of the cell is adjacent to the source cell, and the cell is not selected.
  • the first selection module includes: a pilot sequencing module, configured to sort the cells that meet the predetermined condition according to the pilot strength of the cell, to obtain a sorted cell list; and a sorting selection module, configured to select a cell The first M cells in the list.
  • the pilot sequencing module is further configured to: when there are two or more cells with the same pilot strength, the two or more cells are in the order of the pilot strength list provided by the operator. Sort.
  • the base station controller selects a predetermined number of cells from the received cells indicated by all the pilot environment measurement report fields from one or more UEs, and transmits the information of the selected cells to one or more UEs.
  • FIG. 1 is a flowchart of a soft handover cell assignment method for a trunking communication system according to an embodiment of the present invention
  • FIG. 2 is a soft handover for a trunking communication system according to Example 1 of the present invention.
  • FIG. 3 is a detailed flowchart of a soft handover cell assignment method for a trunking communication system according to Example 2 of the present invention
  • FIG. 4 is a structural block diagram of a base station controller according to an embodiment of the present invention.
  • FIG. 5 is a detailed structural block diagram of a base station controller according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a soft handover cell assignment method for a trunking communication system according to an embodiment of the present invention, as shown in FIG.
  • the method includes: Step S102: The base station controller BSC receives a pilot environment measurement report field from one or more terminal UEs in one scheduling period; Step S104, all guides received by the BSC from the scheduling period Selecting a predetermined number of cells in the cell indicated by the frequency environment measurement report field; Step S106: The BSC sends a broadcast channel assignment message carrying information of the predetermined number of cells to one or more UEs in the scheduling period.
  • the BSC uniformly selects a predetermined number of cells from the received cells indicated by all the pilot environment measurement report fields from one or more UEs, and sends the information of the selected cells to one or more UEs.
  • the BSC in the existing ordinary voice communication system only responds to the pilot environment measurement report field sent by a single UE, and therefore can only perform cell assignment for one UE.
  • the method solves the problem that the BSC of the existing trunking communication system cannot respond to different pilot environment measurement reporting domains of multiple users in the trunking communication system, and is particularly suitable for multiple users with different pilot environments in the trunking communication system.
  • the cell assignment also applies to the assignment of one UE within one scheduling period.
  • the predetermined number is less than the number of searchers for each of the one or more UEs. Since the broadcast channel assignment message is a broadcast type message, all terminals in the cell will receive, which may cause many terminals to receive their unwanted cell pilots, thereby affecting the terminal's traffic channel pilot search capability. Based on the foregoing considerations, the predetermined number may be smaller than the number of searchers of the UE, so that the terminal that receives the cell pilot that it does not need to continue to send the pilot environment measurement report field to the BSC in the subsequent scheduling period, and accepts the BSC. Cell assignment.
  • the process of selecting a predetermined number of cells in the cells indicated by the BSC from all the pilot environment measurements received by the BSC may include, but is not limited to:
  • the BSC sorts one or more UEs according to the sequence of receiving time of all the pilot environments, and obtains the sorted UE list.
  • the selection step The BSC determines the pilot environment measurement report of the current UE in the UE list. Whether the number N of cells in the cell indicated by the domain that meets the predetermined condition is greater than or equal to the predetermined remaining number M (the predetermined remaining number is used to indicate the number of cells that meet the predetermined condition, in addition to the number of cells that have been selected according to the predetermined condition.
  • the sum of the number of selected cells satisfying the predetermined condition and the number of cells that need to be selected according to the predetermined condition is equal to the predetermined number, and if yes, selecting M cells from the cells that meet the predetermined condition, otherwise, selecting all the predetermined conditions
  • the predetermined condition includes: the carrier frequency of the cell is the same as the carrier frequency of the current cell, and the cell The geographical location is adjacent to the source cell, and the cell is not selected (the three are simultaneously satisfied;), performing the selection step for the first time , The current UE to a UE list of the first UE, a predetermined number M is equal to the predetermined remaining number.
  • the process provides a specific method for performing cell selection, and the BSC preferentially selects the pilot environment that is received earlier to measure the cell indicated in the reporting field, and this method preferentially responds to the pilot environment in which the first arrival is measured. It is fair to the user to follow the principle of requesting the first response first. Of course, other cell selection methods can also be selected in practical applications.
  • selecting the M cells from the cells that meet the predetermined condition includes: selecting, according to the pilot strength of the cell, the cell according to the predetermined condition Sort to small, get the sorted cell list; select the top M cells in the cell list.
  • the process is mainly for the process in which the BSC preferentially selects a cell indicated in the pilot environment measurement report field that is received earlier, and if a part of the cell is selected from a cell indicated by a certain pilot environment measurement report field, the process may be adopted.
  • the method of selecting a cell with a strong pilot strength is performed in a manner of 'J, zone selection, to improve the access success rate of the user. If the pilot strengths of the cells are ranked according to the pilot strength of the cell, if the pilot strengths of the two or more cells are the same, the pilot strength list provided by the operator may be used. The two or more cells are sorted in order, or may be sorted by random order or by cell number. The present invention is not limited thereto. The implementation process of the embodiment of the present invention will be described in detail below with reference to examples.
  • Example 1 In this example, three UEs are involved, which are respectively recorded as UE 1, UE2, and UE3, and the number of searchers is 6.
  • Step 4 201, the BSC receives in a scheduling period.
  • the pilot environment measurement reporting domain from the three UEs wherein the pilot environment measurement reporting domain from UE1 is the pilot environment measurement reporting domain 1, and the pilot environment measurement reporting domain from UE2 is the pilot environment measurement reporting report.
  • Domain 2 the pilot environment measurement report field from UE3 is the pilot environment measurement report field 3. It should be noted that the pilot environment measurement report fields from UE1, UE2, and UE3 do not necessarily arrive at the BSC at the same time, but Arrived at the BSC within the current scheduling period.
  • the order of arrival is assumed to be: pilot environment measurement report domain 1, pilot environment measurement domain 2, pilot environment measurement domain 3, pilot environment measurement domain 1 carrying cell 1 and cell 2 information
  • the frequency environment measurement 4 reports the information of the cell 2, the cell 3, and the cell 4, and the pilot environment measurement 4 carries the information of the cell 1 and the cell 5.
  • Step 202 If the predetermined number is 3, the BSC selects 3 of the cells (ie, cell 1, cell 2, cell 3, cell 4, and cell 5) indicated by all the pilot environment measurement report fields received in the scheduling period. Community.
  • the specific selection method includes, but is not limited to:
  • Step 2022 the BSC determines the number of cells satisfying the condition of the pilot environment measurement report field 1 (assuming that the cell carrier frequency of the cell 1 and the cell 2 is the same as the source cell carrier frequency and adjacent to the source cell) 2 ⁇ 3 Then, cell 1 and cell 2 are selected (ie, the pilot environment measurement of UE1 is all selected by the cell indicated by the message field 1), and one cell needs to be selected at this time (the predetermined remaining number is 1).
  • Step 2023 BSC judges The number of cells satisfying the condition in the pilot environment measurement report field 2 is 0 (cell 2 has been selected, assuming that the carrier frequency of cell 3 is different from the source cell, and cell 4 is not adjacent to the source cell) ⁇ 1, and it is necessary to select 1 cell (the predetermined remaining number is 1).
  • Step 2024 the BSC determines that the number of cells satisfying the condition of the pilot environment measurement report field 3 is 1 (cell 1 has been selected, assuming the cell carrier frequency of the cell 5 and the source cell carrier frequency Same and with the source cell Neighbor), select cell 5, and the selection process ends.
  • Step 203 The BSC sends a broadcast channel assignment message carrying information of the cell 1, the cell 2, and the cell 5 to the UE1, the UE2, and the UE3 in a scheduling period.
  • the BSC can start subsequent processing immediately after receiving the pilot environment measurement of the UE, without waiting for the pilot environment measurement report field of other UEs, for example, receiving the pilot environment of UE1 in step 201.
  • Step 202 is started after the measurement report field is started. If the pilot environment measurement report field of UE2 and UE3 is received again, step 202 is continued to improve the processing efficiency of the BSC.
  • FIG. 3 is a detailed flowchart of a soft handover cell assignment method for a trunking communication system according to Example 2 of the present invention. As shown in FIG.
  • Step A The cluster monthly service has been In progress, the call setup is complete.
  • Step B The BSC receives an access message of the terminal 1, and the message carries a pilot environment measurement report field.
  • Step C The BSC saves the access cell pilot environment measurement report domain cell, and establishes a radio resource for the cell and the access cell (ie, the source cell) carried in the report domain.
  • Step D The BSC receives the access message of the terminal 2 in the same 'j, the area, and the message carries the pilot environment measurement area.
  • Step E The BSC determines that the current access cell has not sent the broadcast channel assignment message, and then merges and stores the access cell pilot environment measurement report domain cell (that is, the source set selected by the cell should include the terminal 1 and the terminal 2) Two pilot environments measure the cells indicated by the reporting domain), and establish radio resources for the merged saved cells.
  • Step F The cluster scheduling server establishes radio resources successfully for all cells selected by the base station controller, and notifies the BSC.
  • Step G After the resource establishment is completed, the delay is a 'j, the time of the segment (optional), and the BSC selects three cells in the pilot measurement report domain to establish a broadcast channel assignment, and the selection principle is to preferentially select the carrier frequency of the access cell.
  • the first 8 bits of the neighboring cell if less than 3 cells are complemented by the cells with the strong pilot strength selected from the remaining cells, assign the terminal 1 and the terminal 2 through the broadcast channel assignment message to complete the assignment and enter the soft handover.
  • the selection process of step G can also be implemented by the selection process of step 202 in example 1, and the results may be different.
  • the cell resource in which the BSC is located in the access terminal has not been successfully established, and the broadcast channel assignment message is not sent.
  • the embodiment of the present invention further provides a base station controller BSC, and FIG. 4 is a structural block diagram of a base station controller according to an embodiment of the present invention. As shown in FIG. 4, the method includes: a receiving module 42, configured to receive in a scheduling period.
  • FIG. 5 is a block diagram showing a detailed structure of a base station controller according to an embodiment of the present invention. As shown in FIG. 5, on the basis of FIG.
  • the selecting module 44 includes: a time sorting module 51 for measuring 4 ⁇ according to all pilot environments.
  • the sequence of the receiving time of the reporting domain is sorted by one or more UEs to obtain a sorted UE list.
  • the determining module 52 is connected to the time sorting module 51 for determining the pilot environment measurement report of the current UE in the UE list. Whether the number N of the cells that meet the predetermined condition in the cell indicated by the domain is greater than or equal to the predetermined remaining number M, wherein the predetermined condition includes: the carrier frequency of the cell is the same as the carrier frequency of the current cell, and the geographic location of the cell is related to the source cell The neighboring cell is not selected.
  • the current UE is the first UE in the UE list, and the predetermined remaining number M is equal to the predetermined number.
  • the first selecting module 53 is connected to the determining module 52.
  • the M cells are selected from the cells that meet the predetermined condition;
  • the second selection module 54 is connected to the determination module 52.
  • the first selection module 53 includes: a pilot sequencing module 55, configured to sort the cells that meet the predetermined condition according to the pilot strength of the cell, to obtain a sorted cell list; and the order selection module 56 is connected to The pilot sequencing module 55 is configured to select the first M cells in the cell list.
  • the pilot ordering module 55 can also be used to sort two or more cells according to the order of the pilot strength list provided by the operator if the pilot strengths of two or more cells are the same. .
  • the soft handover cell assignment scheme for the trunking communication system provided by the embodiment of the present invention solves the problem that the BSC of the existing trunking communication system cannot respond to different pilot environment measurement report domains of multiple users in the trunking communication system.
  • the problem is that the assignment of cells for soft handover can be performed simultaneously for multiple UEs in the trunking communication system.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明公开了一种用于集群通信系统的软切换小区指派方法和基站控制器,该方法包括:基站控制器BSC在一个调度周期内接收来自一个或者多个终端UE的导频环境测量报告域;BSC从调度周期内接收到的所有导频环境测量报告域指示的小区中选择预定数量小区;BSC在调度周期内向一个或者多个UE发送携带有预定数量小区的信息的广播信道指派消息。通过本发明,能够同时对集群通信系统中的多个UE进行用于软切换的小区的指派。

Description

用于集群通信系统的软切换小区指派方法 ^^站控制器 技术领域 本发明涉及通信领域, 具体而言, 涉及一种用于集群通信系统的软切换 小区指派方法及基站控制器 ( Base Station Controller, 简称为 BSC )。 背景技术 随着 CDMA ( Code Division Multiple Access, 码分多址) 集群通信技术 的发展, 如何完善 CDMA 集群系统的指派进入软切换方案成为业内研究的 重点问题。 在普通语音通信系统中, 提供了能够支持单个用户的软切换小区的指派 方法, 在该方法中, BSC响应于来自单个用户的导频环境测量 4艮告域, 为该 用户指派该报告域中指示的所有小区或特定数量的小区。 在现有的集群通信系统中, 集群业务的接入小区下存在多个用户, 且每 个用户的小区的分布及其环境也不一样, 其上 4艮的导频环境测量 4艮告域中携 带的小区也互不相同。 发明人发现, 釆用上述普通预定通信系统的指派方法 进行小区的指派时,因为 BSC只能响应于来自单个用户的导频环境测量报告 域, 所以无法响应集群通信系统中多个用户的不同的导频环境测量 4艮告域。 发明内容 本发明的目的在于提供一种用于集群通信系统的软切换小区指派方法及 基站控制器, 以解决相关技术中, 集群通信系统的 BSC无法响应集群通信系 统中多个用户的不同的导频环境测量报告域的问题。 根据本发明的一个方面, 提供了一种用于集群通信系统的软切换小区指 派方法, 包括: 基站控制器 BSC在一个调度周期内接收来自一个或者多个终 端 UE的导频环境测量报告域; BSC从调度周期内接收到的所有导频环境测 量报告域指示的小区中选择预定数量小区; BSC在调度周期内向一个或者多 个 UE发送携带有预定数量小区的信息的广播信道指派消息。 优选地, 预定数量小于一个或者多个 UE中每个 UE的搜索器数量。 优选地, BSC从调度周期内接收到的所有导频环境测量报告域指示的小 区中选择预定数量小区包括: BSC按照所有导频环境测量报告域的接收时间 的先后顺序对一个或者多个 UE进行排序, 得到排序后的 UE列表; 选择步 骤: BSC判断 UE列表中的当前 UE的导频环境测量报告域指示的小区中符 合预定条件的小区的数量 N是否大于或等于预定剩余数量 M , 若是, 则从符 合预定条件的小区中选择 M个小区, 否则, 选择所有符合预定条件的小区, 并令 M=M-N, 且令 UE列表中当前 UE的下一个 UE作为当前 UE, 并返回 选择步骤, 其中, 预定条件包括: 小区的载频与当前小区的载频相同、 小区 的地理位置与源小区相邻、 且小区未被选择, 在第一次执行选择步骤时, 当 前 UE为 UE列表中的第一个 UE, 预定剩余数量 M等于预定数量。 优选地, 在符合预定条件的小区的数量 N 大于或等于预定剩余数量 M 的情况下, 从符合预定条件的小区中选择 M个小区包括: 将符合预定条件的 小区按照小区的导频强度从大到小进行排序, 得到排序后的小区列表; 选择 小区列表中的前 M个小区。 优选地, 将符合预定条件的小区按照小区的导频强度从大到小进行排序 的过程中, 如果存在两个或两个以上的小区的导频强度相同, 则按照运营商 提供的导频强度列表的顺序对该两个或两个以上的小区进行排序。 根据本发明的另一方面, 提供了一种基站控制器, 包括: 接收模块, 用 于在一个调度周期内接收来自一个或者多个终端 UE中每个 UE的导频环境 测量报告域; 选择模块, 用于从接收到的调度周期内所有导频环境测量报告 域指示的小区中选择预定数量小区; 发送模块, 用于在调度周期内向一个或 者多个 UE发送携带有预定小区的信息的广播信道指派消息。 优选地, 预定数量小于一个或者多个 UE中每个 UE的搜索器数量。 优选地, 选择模块包括: 时间排序模块, 用于按照所有导频环境测量 4艮 告域的接收时间的先后顺序对一个或者多个 UE进行排序,得到排序后的 UE 列表; 判断模块, 用于判断 UE列表中的当前 UE的导频环境测量报告域指 示的小区中符合预定条件的小区的数量 N是否大于或等于预定剩余数量 M , 其中, 预定条件包括: 小区的载频与当前小区的载频相同、 小区的地理位置 与源小区相邻、 且小区未被选择, 在第一次触发所述判断模块时, 当前 UE 为 UE列表中的第一个 UE, 预定剩余数量 M等于预定数量; 第一选择模块, 用于在判断模块的判断结果为是的情况下, 从符合预定条件的小区中选择 M 个小区; 第二选择模块, 用于在判断模块的判断结果为否的情况下, 选择所 有符合预定条件的小区, 并令 M=M-N, 且令 UE列表中当前 UE的下一个 UE作为当前 UE , 并触发判断模块。 优选地, 第一选择模块包括: 导频排序模块, 用于将符合预定条件的小 区按照小区的导频强度从大到小进行排序, 得到排序后的小区列表; 排序选 择模块, 用于选择小区列表中的前 M个小区。 优选地, 导频排序模块还用于在存在两个或两个以上的小区的导频强度 相同的情况下, 按照运营商提供的导频强度列表的顺序对该两个或两个以上 的小区进行排序。 通过本发明, 釆用基站控制器从接收到的来自一个或者多个 UE的所有 导频环境测量报告域指示的小区中选择预定数量小区, 并将选择的小区的信 息发送至一个或者多个 UE, 解决了现有集群通信系统的 BSC无法响应集群 通信系统中多个用户的不同的导频环境测量报告域的问题, 达到了能够同时 对集群通信系统中的多个 UE进行用于软切换的小区的指派的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是才艮据本发明实施例的用于集群通信系统的软切换小区指派方法的 流程图; 图 2是才艮据本发明实例 1的用于集群通信系统的软切换小区指派方法的 详细流程图; 图 3是才艮据本发明实例 2的用于集群通信系统的软切换小区指派方法的 详细流程图; 图 4是根据本发明实施例的基站控制器的结构框图; 图 5是根据本发明实施例的基站控制器的详细结构框图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 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组合。 本发明实施例提供了一种用于集群通信系统的软切换小区指派方法, 图 1 是才艮据本发明实施例的用于集群通信系统的软切换小区指派方法的流程 图, 如图 1所示, 该方法包括: 步骤 S 102, 基站控制器 BSC在一个调度周期内接收来自一个或者多个 终端 UE的导频环境测量艮告域; 步骤 S 104, BSC从调度周期内接收到的所有导频环境测量报告域指示的 小区中选择预定数量小区; 步骤 S 106, BSC在调度周期内向一个或者多个 UE发送携带有预定数量 小区的信息的广播信道指派消息。 上述方法中, BSC统一从接收到的来自一个或者多个 UE的所有导频环 境测量报告域所指示的小区中选择出预定数量的小区, 并将选择的小区的信 息发送至一个或者多个 UE, 充分考虑了 BSC需要同时为多个 UE指派小区 的情况, 与现有的普通语音通信系统中 BSC仅响应单个 UE发来的导频环境 测量报告域, 因此仅能够为一个 UE进行小区指派相比, 该方法解决了现有 集群通信系统的 BSC 无法响应集群通信系统中多个用户的不同的导频环境 测量报告域的问题, 尤其适用于集群通信系统中具有不同导频环境的多个用 户的小区指派, 同时, 也适用于在一个调度周期内为一个 UE进行指派的情 况。 优选地, 预定数量小于一个或者多个 UE中每个 UE的搜索器数量。 由 于广播信道指派消息是一种广播类型的消息,所有该小区下的终端都会收到, 这可能会导致很多终端收到其不需要的小区导频, 从而会影响终端的业务信 道导频搜索能力, 基于上述考虑, 可以使预定数量小于 UE的搜索器的数量, 以便使收到了其不需要的小区导频的终端在后续调度周期内继续向 BSC 发 送导频环境测量报告域, 并接受 BSC的小区指派。 通过这种方法, 能够尽可 能的提高 UE接收到合适的小区导频的概率, 进而提高用户迟后成功率, 对 终端的搜索能力产生的影响较小, 不会因为指派终端不需要的小区资源而导 致终端在业务信道掉话。 BSC 从调度周期内接收到的所有导频环境测量 4艮告域指示的小区中选 择预定数量小区的过程可以包括但不限于:
BSC 按照所有导频环境测量 4艮告域的接收时间的先后顺序对一个或者 多个 UE进行排序, 得到排序后的 UE列表; 选择步骤: BSC判断 UE列表中的当前 UE的导频环境测量报告域指示 的小区中符合预定条件的小区的数量 N是否大于或等于预定剩余数量 M(预 定剩余数量用于指示除已选择的符合预定条件的小区数量外, 还需要选择的 符合预定条件的小区数量, 已选择的符合预定条件的小区数量与还需要选择 的符合预定条件的小区数量之和等于预定数量),若是, 则从符合预定条件的 小区中选择 M个小区, 否则, 选择所有符合预定条件的小区, 并令 M=M-N, 且令 UE列表中当前 UE的下一个 UE作为当前 UE,并返回选择步 4聚,其中, 预定条件包括: 小区的载频与当前小区的载频相同、 小区的地理位置与源小 区相邻、 且小区未被选择(三者同时满足;), 在第一次执行选择步骤时, 当前 UE为 UE列表中的第一个 UE, 预定剩余数量 M等于预定数量。 该过程给出了进行小区选择的具体方法, BSC优先选择较早接收到的导 频环境测量 4艮告域中指示的小区, 这种方式优先响应先到达的导频环境测量 4艮告域, 遵循先请求先响应的原则, 对于用户来说较为公平, 当然, 在实际 应用中也可以选择其他的小区选择方法, 例如, 按照小区的导频强度进行排 序, 优先选择导频强度较强的小区等等。 优选地, 在符合预定条件的小区的数量 N 大于或等于预定剩余数量 M 的情况下, 从符合预定条件的小区中选择 M个小区包括: 将符合预定条件的 小区按照小区的导频强度从大到小进行排序, 得到排序后的小区列表; 选择 小区列表中的前 M个小区。 该过程主要针对上述的 BSC优先选择较早接收 到的导频环境测量报告域中指示的小区的过程, 若需要从某个导频环境测量 报告域指示的小区中选择部分小区, 则可以釆用优先选择导频强度大的小区 的方式进行 'J、区选择, 以提高用户的接入成功率。 将符合预定条件的小区按 照小区的导频强度从大到小进行排序的过程中, 如果存在两个或两个以上的 小区的导频强度相同, 则可以按照运营商提供的导频强度列表的顺序对两个 或两个以上的小区进行排序, 或者, 也可以釆用随机排序或按照小区号进行 排序等方式, 本发明对此不故限制。 下面将结合实例对本发明实施例的实现过程进行详细描述。 实例 1 该实例中涉及 3个 UE , 分别记为 UE 1、 UE2和 UE3 , 其搜索器数量均 为 6。 图 2是才艮据本发明实例 1的用于集群通信系统的软切换小区指派方法 的详细流程图, 如图 2所示, 包括以下步骤: 步 4聚 201 , BSC在一个调度周期内接收到来自 3个 UE的导频环境测量 艮告域, 其中, 来自 UE1的导频环境测量艮告域为导频环境测量艮告域 1 , 来自 UE2的导频环境测量报告域为导频环境测量报告域 2,来自 UE3的导频 环境测量报告域为导频环境测量报告域 3 , 需要说明的是, 来自 UE1、 UE2 和 UE3的导频环境测量报告域不一定是同时到达该 BSC的, 而是在当前调 度周期内到达该 BSC的。 该实例中, 假设到达顺序为: 导频环境测量报告域 1、 导频环境测量 告域 2、 导频环境测量 告域 3 , 导频环境测量 告域 1 携带小区 1和小区 2的信息, 导频环境测量 4艮告域 2携带小区 2、 小区 3、 小区 4的信息, 导频环境测量 4艮告域 3携带小区 1、 小区 5的信息。 步骤 202, 假设预定数量为 3 , 则 BSC从调度周期内接收到的所有导频 环境测量报告域指示的小区 (即, 小区 1、 小区 2、 小区 3、 小区 4、 小区 5 ) 中选择 3个小区。 具体的选择方法包括但不限于: 步骤 2021 , BSC按照导频环境测量报告域的接收时间的先后顺序对一个 或者多个 UE进行排序, 得到排序后的 UE列表, 此时 UE列表为 (UE1、 UE2、 UE3 )„ 步骤 2022, BSC判断导频环境测量报告域 1的满足条件的小区数量(假 设小区 1和小区 2的小区载频与源小区载频相同且与源小区相邻) 2<3 , 则 选择小区 1和小区 2 (即, UE1的导频环境测量 4艮告域 1指示的小区全部选 择), 此时还需选择 1个小区 (预定剩余数量为 1 )。 步骤 2023 , BSC判断导频环境测量报告域 2的满足条件的小区数量为 0 (小区 2已被选择, 假设小区 3的载频与源小区不同, 小区 4与源小区不相 邻) <1 , 此时还需选择 1个小区 (预定剩余数量为 1 )。 步骤 2024, BSC判断导频环境测量报告域 3的满足条件的小区数量为 1 (小区 1 已被选择, 假设小区 5的小区载频与源小区载频相同且与源小区相 邻), 则选择小区 5 , 选择过程结束。 步骤 203 , BSC在调度周期内向 UE1、 UE2和 UE3发送携带有小区 1、 小区 2和小区 5的信息的广播信道指派消息。 优选地, BSC可以在接到 UE的导频环境测量 4艮告域后立即开始后续的 处理, 而不必等待其他 UE的导频环境测量报告域, 例如, 步骤 201 中接收 到 UE1的导频环境测量报告域后即开始执行步骤 202, 此时若再接收到 UE2 及 UE3的导频环境测量报告域, 则继续执行步骤 202, 以提高 BSC的处理效 率。 实例 2 图 3是才艮据本发明实例 2的用于集群通信系统的软切换小区指派方法的 详细流程图, 如图 3所示, 包括以下步 4聚: 步骤 A: 集群月艮务已经在进行中, 呼叫建立完成。 步骤 B: BSC收到终端 1的接入消息,该消息携带导频环境测量报告域。 步骤 C: BSC保存该接入小区导频环境测量报告域小区, 并且为报告域 中携带的小区和接入小区 (即, 源小区) 建立无线资源。 步骤 D: BSC在同一' j、区收到终端 2的接入消息, 该消息携带导频环境 测量 告域。 步骤 E: BSC判断当前的接入小区还未发送广播信道指派消息, 则归并 保存该接入小区导频环境测量报告域小区 (即, 小区选择的源集合应包括终 端 1 和终端 2发来的两个导频环境测量报告域指示的小区), 并且为归并保 存的测量 4艮告域小区建立无线资源。 步骤 F: 集群调度服务器为基站控制器选择的所有小区建立无线资源成 功, 并通知 BSC。 步骤 G: 资源建立完成后, 延迟一' j、段时间 (可选), BSC选取建立成 功的导频测量报告域中 3个小区进行广播信道指派, 选取原则为优先选择该 接入小区载频邻区的前 8位小区, 如果不足 3个小区再由剩下的小区中选取 导频强度大的小区补足, 通过广播信道指派消息指派终端 1和终端 2, 完成 指派进入软切换。 优选地, 步骤 G的选择过程还可以通过实例 1中步骤 202 的选择过程来实施, 其结果可能不同。 该实例中, BSC在接入终端所处的小区资源尚未建立成功且未发送广播 信道指派消息, 如果又收到其他同小区下的终端的接入消息, 并且携带导频 环境测量报告域时, BSC会釆用本小区邻区优先并结合导频强度原则, 选取 多次迟后消息的导频环境测量报告域中的若千个 (预定数量) 小区资源进行 软切换小区指派。 本发明实施例还提供了一种基站控制器 BSC, 图 4是根据本发明实施例 的基站控制器的结构框图, 如图 4所示, 包括: 接收模块 42 , 用于在一个调 度周期内接收来自一个或者多个终端 UE的导频环境测量报告域; 选择模块 44 , 连接于接收模块 42 , 用于从接收到的调度周期内所有导频环境测量报告 域指示的小区中选择预定数量小区; 发送模块 46 , 连接于选择模块 44 , 用 于在调度周期内向一个或者多个 UE发送携带有预定小区的信息的广播信道 指派消息。 优选地, 预定数量小于一个或者多个 UE中每个 UE的搜索器数量。 图 5是根据本发明实施例的基站控制器的详细结构框图, 如图 5所示, 在图 4的基础上, 选择模块 44包括: 时间排序模块 51 , 用于按照所有导频 环境测量 4艮告域的接收时间的先后顺序对一个或者多个 UE进行排序, 得到 排序后的 UE列表; 判断模块 52 , 连接于时间排序模块 51 , 用于判断 UE列 表中的当前 UE的导频环境测量报告域指示的小区中符合预定条件的小区的 数量 N是否大于或等于预定剩余数量 M, 其中, 预定条件包括: 小区的载频 与当前小区的载频相同、 小区的地理位置与所述源小区相邻、 且小区未被选 择, 在第一次触发判断模块 52时, 当前 UE为 UE列表中的第一个 UE, 预 定剩余数量 M等于预定数量; 第一选择模块 53 , 连接于判断模块 52 , 用于 在判断模块 52的判断结果为是的情况下, 从符合预定条件的小区中选择 M 个小区; 第二选择模块 54 , 连接于判断模块 52 , 用于在判断模块 52的判断 结果为否的情况下, 选择所有符合预定条件的小区, 并令 M=M-N, 且令 UE 列表中当前 UE的下一个 UE作为当前 UE, 并触发判断模块 52。 其中, 第一选择模块 53 包括: 导频排序模块 55 , 用于将符合预定条件 的小区按照小区的导频强度从大到小进行排序, 得到排序后的小区列表; 排 序选择模块 56 , 连接于导频排序模块 55 , 用于选择小区列表中的前 M个小 区。 导频排序模块 55 还可以用于在存在两个或两个以上的小区的导频强度 相同的情况下, 按照运营商提供的导频强度列表的顺序对两个或两个以上的 小区进行排序。 综上所述, 本发明实施例提供的用于集群通信系统的软切换小区指派方 案解决了现有集群通信系统的 BSC 无法响应集群通信系统中多个用户的不 同的导频环境测量报告域的问题, 能够同时对集群通信系统中的多个 UE进 行用于软切换的小区的指派。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 并 且在某些情况下, 可以以不同于此处的顺序执行所示出或描述的步骤, 或者 将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软件 结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"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。

Claims

权 利 要 求 书
1. 一种用于集群通信系统的软切换小区指派方法, 其特征在于, 包括: 基站控制器 BSC在一个调度周期内接收来自一个或者多个终端 UE 的导频环境测量 4艮告域;
所述 BSC 从所述调度周期内接收到的所有导频环境测量 4艮告域指 示的小区中选择预定数量小区;
所述 BSC在所述调度周期内向所述一个或者多个 UE发送携带有所 述预定数量小区的信息的广播信道指派消息。
2. 根据权利要求 1所述的方法, 其特征在于, 所述预定数量小于所述一个 或者多个 UE中每个 UE的搜索器数量。
3. 根据权利要求 1所述的方法, 其特征在于, 所述 BSC从所述调度周期内 接收到的所有导频环境测量报告域指示的小区中选择所述预定数量小区 包括:
所述 BSC 按照所述所有导频环境测量 4艮告域的接收时间的先后顺 序对所述一个或者多个 UE进行排序, 得到排序后的 UE列表;
选择步骤: 所述 BSC判断所述 UE列表中的当前 UE的所述导频环 境测量报告域指示的小区中符合预定条件的小区的数量 N是否大于或等 于预定剩余数量 M, 如果是, 则从所述符合预定条件的小区中选择 M个 小区, 如果不是, 选择所有所述符合预定条件的小区, 并令 M=M-N, 且令所述 UE列表中所述当前 UE的下一个 UE作为当前 UE, 并返回所 述选择步骤, 其中, 所述预定条件包括: 小区的载频与所述当前小区的 载频相同、 小区的地理位置与所述源小区相邻、 且小区未被选择, 在第 一次执行所述选择步骤时,所述当前 UE为所述 UE列表中的第一个 UE, 所述预定剩余数量 M等于所述预定数量。
4. 根据权利要求 3所述的方法, 其特征在于, 在所述符合预定条件的小区 的数量 N大于或等于所述预定剩余数量 M的情况下,从所述符合预定条 件的小区中选择 M个小区包括:
将所述符合预定条件的小区按照小区的导频强度从大到 'j、进行排 序, 得到排序后的小区列表; 选择所述小区列表中的前 M个小区。
5. 根据权利要求 4所述的方法, 其特征在于, 将所述符合预定条件的小区 按照小区的导频强度从大到 'j、进行排序的过程中, 如果存在两个或两个 以上的小区的导频强度相同, 则按照运营商提供的导频强度列表的顺序 对所述两个或两个以上的小区进行排序。
6. —种基站控制器 BSC, 其特征在于, 包括:
接收模块, 用于在一个调度周期内接收来自一个或者多个终端 UE 中每个 UE的导频环境测量报告域;
选择模块, 用于从接收到的所述调度周期内所有导频环境测量报告 域指示的小区中选择预定数量小区;
发送模块, 用于在所述调度周期内向所述一个或者多个 UE发送携 带有所述预定小区的信息的广播信道指派消息。
7. 根据权利要求 6所述的 BSC, 其特征在于, 所述预定数量小于所述一个 或者多个 UE中每个 UE的搜索器数量。
8. 居权利要求 6所述的 BSC, 其特征在于, 所述选择模块包括:
时间排序模块, 用于按照所述所有导频环境测量报告域的接收时间 的先后顺序对所述一个或者多个 UE进行排序, 得到排序后的 UE列表; 判断模块, 用于判断所述 UE列表中的当前 UE的所述导频环境测 量报告域指示的小区中符合预定条件的小区的数量 N是否大于或等于预 定剩余数量 M, 其中, 所述预定条件包括: 小区的载频与所述当前小区 的载频相同、 小区的地理位置与所述源小区相邻、 且小区未被选择, 在 第一次触发所述判断模块时, 所述当前 UE为所述 UE列表中的第一个 UE , 所述预定剩余数量 M等于所述预定数量;
第一选择模块, 用于在所述判断模块的判断结果为是的情况下, 从 所述符合预定条件的小区中选择 M个小区;
第二选择模块, 用于在所述判断模块的判断结果为否的情况下, 选 择所有所述符合预定条件的小区, 并令 Μ=Μ-Ν , 且令所述 UE列表中所 述当前 UE的下一个 UE作为当前 UE, 并触发所述判断模块。
. 根据权利要求 8所述的 BSC, 其特征在于, 所述第一选择模块包括: 导频排序模块, 用于将所述符合预定条件的小区按照小区的导频强 度从大到小进行排序, 得到排序后的小区列表;
排序选择模块, 用于选择所述小区列表中的前 M个小区。
10. 居权利要求 9所述的 BSC, 其特征在于, 所述导频排序模块还用于在 存在两个或两个以上的小区的导频强度相同的情况下, 按照运营商提供 的导频强度列表的顺序对所述两个或两个以上的小区进行排序。
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