WO2011009246A1 - 一种扩展同频同伪随机噪声小区覆盖范围的方法和系统 - Google Patents

一种扩展同频同伪随机噪声小区覆盖范围的方法和系统 Download PDF

Info

Publication number
WO2011009246A1
WO2011009246A1 PCT/CN2009/074160 CN2009074160W WO2011009246A1 WO 2011009246 A1 WO2011009246 A1 WO 2011009246A1 CN 2009074160 W CN2009074160 W CN 2009074160W WO 2011009246 A1 WO2011009246 A1 WO 2011009246A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
meta
virtual
cells
same
Prior art date
Application number
PCT/CN2009/074160
Other languages
English (en)
French (fr)
Inventor
刘滔
李良斌
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.)
Filing date
Publication date
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
Publication of WO2011009246A1 publication Critical patent/WO2011009246A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection

Definitions

  • the invention relates to a time-division wireless communication system mainly based on data services, in particular to an extended-frequency pseudo-random noise in an EVDO (Evolution, Data Only) system in a Code Division Multiple Access (CDMA) 2000 series standard.
  • EVDO Expon, Data Only
  • CDMA Code Division Multiple Access
  • CDMA20001x EVDO technology is a branch of the CDMA2000 standard series. It is an important international standard for wireless data communication in the Third Generation Communication System (3G) family.
  • EVDO technology is a platform for high-speed wireless data services.
  • the EVDO network can be shared with the CDMA2000 IX network that provides voice services and low-speed data services to share frequency bands.
  • the EVDO high-speed data network is currently in a period of large-scale construction in the domestic and international communication markets, and has a bright future.
  • wireless carriers can provide users with various multimedia services such as web browsing, video on demand VOD, video telephony VT, IP telephony VOIP, and video broadcasting.
  • the CDMA2000 IX EVDO network consists of the basic unit, the cell, and is a typical cellular mobile communication data network.
  • a DO cell has basic functions for processing DO radio services. The main features include cell coverage, cell processing capability, and cell signal quality. The important radio characteristic parameters of the cell include cell ID (identification), cell PN (pseudo-random noise), cell overhead message, and the like.
  • the cross coverage area between cells is called a handover area, and the mobile terminal can receive signals of multiple cells in the handover area, and can accept services of multiple cells. Switching is a fundamental feature of cellular systems. In EVDO systems, the size of the switching area and the performance of the switching are important factors that affect the quality of the system.
  • the physical meaning of the PN value of the cell is the code division multiple access phase of the preamble signal, which is one of the basic parameters of the CDMA signal.
  • the neighboring cells can use different PN values of the same frequency point for networking, and the terminal can distinguish the source of the pilot signal according to the PN value.
  • Cover of the community Capability describes the physical extent of cell service coverage. The wider the coverage of a single cell, the greater the physical distance that supports wireless access for users; the smaller the physical distance supported. If the EVDO network is deployed in a specific urban area with a certain area, it is obvious that the number of required DO cells is inversely proportional to the coverage of the cell without considering other factors such as cell capacity and processing capability. That is, the larger the coverage of a single cell, the smaller the number of cells required; the smaller the coverage of a single cell, the more the number of cells required.
  • Switching problems are an issue that mobile cellular systems cannot avoid. Switching requires the use of various system resources such as a wireless demodulation unit, a vocoder unit, and the like. A system with a high switching rate will inevitably lead to a decrease in the overall capacity of the system. At the same time, a large number of switching phenomena may cause the dropped call rate to rise.
  • a common method for improving service performance is to optimize handover-related service parameters, such as setting of various handover thresholds, setting of handover timers, optimization of handover algorithms, and the like. How to reduce the switching area and improve the performance of the switching area is a hot research issue in the EVDO network system.
  • the present invention provides a method and system for extending the coverage of the same frequency and pseudo-random noise cell, reducing the wireless call drop rate of the communication connection, and improving the service performance of the handover area.
  • the present invention provides a method for extending coverage of an intra-frequency and pseudo-random noise cell, including: setting one or more virtual cells in a network range, each virtual cell including one or more of the same a carrier cell with the same pseudo-random noise value; setting a handover relationship between the meta-cells in each virtual cell to a softer handover relationship; the base transceiver station performs the same processing on signals belonging to different meta-cells in the same virtual cell.
  • the above methods also include:
  • the step of the base transceiver station performing the same processing on the signals belonging to different meta cells in the same virtual cell includes: the base transceiver station processes the signals of the meta cells in the virtual cell by using the configuration parameters of the reference cell. Further, the above method has the following features:
  • the reference cell is one of the primary cells in which the primary service is located in the virtual cell.
  • the step of the base transceiver station processing the signal of each meta cell in the virtual cell by using the configuration parameter of the reference cell includes: when the base station controller sends the forward signal to the meta cell in the virtual cell, the base transceiver station will The signal is identified as a reference cell, and after the received forward signal is configured according to the configuration parameter of the reference cell, the radio frequency is sent to the coverage of the virtual cell.
  • the step of the base transceiver station processing the signals of the meta cells in the virtual cell by using the configuration parameters of the reference cell includes: when the mobile terminal in the meta cell in the virtual cell sends the reverse signal, the base transceiver station will be the non-reference cell
  • the source of the reverse signal is identified by the identity of the reference cell and sent to the base station controller.
  • the present invention also provides a base transceiver station supporting a system for extending coverage of an intra-frequency and pseudo-random noise cell.
  • the base transceiver station is configured to set one or more virtual cells in a management range, where each virtual cell includes one or more meta cells having the same carrier frequency and the same pseudo random noise value; setting a virtual cell inner cell
  • the switching relationship between the two is a softer handover relationship, and the same processing is performed on signals belonging to different meta-cells in the same virtual cell.
  • the above base transceiver station has the following features:
  • the base transceiver station is configured to process data of each meta cell in the virtual cell by using configuration parameters of the reference cell when performing the same processing on signals of different meta cells in the same virtual cell, where the reference cell is One of the meta cells in the virtual cell.
  • the above base transceiver station has the following features:
  • the reference cell is one of the primary cells in which the primary service is located in the virtual cell.
  • the above base transceiver station has the following features:
  • the base transceiver station includes a service layer module, a baseband processing module, and a radio frequency module; the service layer module is configured to send the received base station controller to the meta cell in the virtual cell
  • the forward signals are all identified as reference cells and sent to the baseband processing module;
  • the baseband processing module is configured to send the received forward signal according to the configuration parameter of the reference cell, and then send the signal to the radio frequency module; the radio frequency module is configured to send the forward signal to the coverage of the virtual cell.
  • the above base transceiver station has the following features:
  • the base transceiver station is further configured to: after receiving the reverse signal sent by the mobile terminal in the meta cell in the virtual cell, identify the source of the reverse signal of the non-reference cell as the identifier of the reference cell, and send the identifier to the base station controller. .
  • the present invention also provides a system for extending coverage of an intra-frequency and pseudo-random noise cell, comprising a base transceiver station and a base station controller as described above.
  • the base station controller is configured to send a forward signal to the meta cell in the virtual cell.
  • the invention reduces the handover area by extending the same-frequency and PN coverage of the DO cell (that is, the cell configured with the DO carrier frequency), thereby achieving the purpose of reducing the handover rate, the dropped call rate, and the system capacity, and solving the wireless mobile communication system.
  • EVDO network optimizers can choose to use this function as needed. This method and system are compatible with previous system designs and support hybrid networking with DO normal cells that do not use this technology.
  • the present invention has a significant effect on improving the service performance of the handover area in the EVDO system.
  • 1 is a flow chart of a method for extending coverage of an intra-frequency and pseudo-random noise cell in an embodiment.
  • a system for extending coverage of an intra-frequency and pseudo-random noise cell including a base transceiver station and a base station controller,
  • a base transceiver station configured to set one or more virtual cells within a management scope, and a virtual cell
  • the one or more meta cells having the same carrier frequency and the same pseudo random noise value are set, and the switching relationship between the meta cells in the virtual cell is set to a softer handover relationship, and the signals belonging to different meta cells in the same virtual cell are the same.
  • the processing is also used to process data of each meta cell in the virtual cell by using a configuration parameter of the reference cell, where the reference cell is one of the primary cells where the primary service is located in the virtual cell.
  • the source of the reverse signal of the non-reference cell is identified as the identifier of the reference cell, and is sent to the base station controller.
  • the base transceiver station includes a service layer module, a baseband processing module, and a radio frequency module; and the base station controller is further configured to send a forward signal to the meta cell in the virtual cell;
  • a service layer module configured to identify the received forward signal as a reference cell, and send the signal to the baseband processing module
  • a baseband processing module configured to send the received forward service message according to the configuration parameter of the reference cell, and send the message to the radio frequency module;
  • the radio frequency module is configured to send the forward service message to a coverage of the virtual cell.
  • the method for extending the coverage of the same-frequency pseudo-random noise cell includes: Step 101: Set one or more virtual cells in the network range, where the virtual cell includes one or more of the same carrier frequency and the same pseudo a meta cell with a random noise value; setting a handover relationship between the meta cells in the virtual cell to a softer handover relationship;
  • a virtual cell is set, where the virtual cell is composed of multiple meta cells, where the meta cell refers to a cell in a general sense including a CDMA system, and each meta cell in the same virtual cell is physically covered differently.
  • the physical range (which may be an adjacent relationship) sets a wireless signal that outputs the same carrier frequency and the same pseudorandom noise value for each meta cell in the same virtual cell.
  • the switching relationship between the meta cells in the virtual cell is set to a softer handover relationship.
  • Softer Handoff refers to switching between different cells handled by the same baseband chip.
  • Softer Handoff can reduce the switching delay compared to “soft handoff”.
  • the system configures the configuration parameters of the virtual cell (such as the meta-cell ID of the virtual cell, the parameters of the reference cell of the virtual cell, and the like) in the base transceiver station, and includes the following steps:
  • Step 1 manually input configuration information of the virtual cell in the system user interface interface; the configuration information of the virtual cell includes the identifier of each meta cell of the virtual cell, and the softer of each meta cell Change relationship, reference cell identity, configuration parameters of the reference cell, antenna parameters of the sector, access channel parameters, forward delay parameters, reverse delay parameters, and the like.
  • a reference cell is selected from a meta cell included in the virtual cell, one of the Solutions in which the primary service is located in the virtual cell is used as the reference cell. Because there are many mobile terminals using the primary service, the primary cell in which the primary service is located is selected as the reference cell. It is beneficial to reduce the switching rate and call drop rate of the terminal.
  • Step 2 configuring configuration information of the virtual cell to the base transceiver station
  • Step 3 The baseband main control module of the base transceiver station maps the configuration information of the virtual cell to the bottom layer parameter group, and configures the baseband chip parameter to the baseband processing chip through the baseband processing chip configuration interface, and baseband logic parameters are configured through the baseband logic chip configuration interface. Configuring to baseband logic chip;
  • the baseband chip parameters include a softer handover relationship of each cell of the virtual cell, each cell ID, a reference cell ID, antenna parameters of each sector, access channel parameters, and the like;
  • the baseband logic parameters include logical parameters such as forward delay parameters and reverse delay parameters.
  • the improvements in the present invention relate only to changes to the base transceiver station and do not involve changes to the base station controller.
  • Step 102 The base transceiver station performs the same processing on the signals belonging to different meta cells in the same virtual cell, and the process ends.
  • the baseband signal of the non-reference cell is configured by the baseband master control module according to the configuration parameter of the reference cell, and is sent to the radio frequency module for transmission; in the reverse signal processing, the reverse signal of the non-reference cell is When transmitted to the system service layer, it is uniformly mapped to the reference cell.
  • the method ensures that the system service layer processing logic of the system above the sector is not changed, and the extended coverage of the same frequency PN signal is realized.
  • the specific processing procedure for the forward signal includes the following steps:
  • Step 1 The base station controller sends a forward signal to the meta cell in the virtual cell.
  • Step 2 because the non-reference cells A and B are both the cell R as the reference cell, the service layer module of the base transceiver station identifies the received forward signal sent to the virtual cell as the reference cell R, and sends the signal to the baseband.
  • Processing module Step 3 The baseband processing module receives the forward service message identified as the reference cell R, and refers to the configuration information of the saved virtual cell, and the baseband main control module configures the received forward service message according to the configuration parameter of the reference cell, And sent to the RF module;
  • Step 4 The radio processing module of the base transceiver station performs the radio frequency transmission of the received forward service message, and the range of the transmission is the coverage of the entire virtual cell, that is, the sum of the coverage ranges of the meta cells R, A, and B.
  • the specific processing procedure for the reverse signal includes the following steps:
  • Step 1 The mobile terminal in the virtual cell transmits a reverse signal.
  • Step 2 The radio frequency processing module of the base transceiver station receives the reverse signal and performs frequency domain processing, and then sends the signal to the baseband processing module.
  • Step 3 The baseband processing module of the base transceiver station parses and obtains the reverse baseband signal, and sends the reverse baseband signal to the service layer processing module of the base transceiver station;
  • Step 4 When the reverse signal is a reverse signal sent by the mobile terminal in the reference cell, the service layer processing module sends the reverse baseband signal to the base station controller; the reverse signal is a reverse sent by the mobile terminal in the non-reference cell.
  • the service layer processing module identifies the source of the reverse signal of the non-reference cell as the identifier of the reference cell, and sends the identifier to the base station controller;
  • Step 5 The base station controller uniformly processes the reverse message from the virtual cell.
  • the reverse signal of the virtual cell is processed as the reverse signal of the reference cell R, where the mobile terminal is located in the virtual cell.
  • the base station controller does not need to perceive and process the handovers, thereby reducing the data processing amount of the base station controller, reducing the processing of the handover operation of the mobile terminal by the base station controller, and simultaneously reducing the call drop rate of the mobile terminal.
  • the above method achieves the purpose of reducing the handover area, reducing the handover rate and the call drop rate, and improving the system capacity by extending the coverage of the same frequency and the same PN cell in the EVDO system.
  • the present invention achieves the purpose of reducing the handover area, reducing the handover rate and the call drop rate, and improving the system capacity by extending the coverage range of the same frequency and the same PN cell in the EVDO system.

Landscapes

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

Description

技术领域
本发明涉及以数据业务为主的时分方式无线通讯系统， 尤其涉及码分多 址 （Code Division Multiple Access , CDMA ) 2000 系列标准中的 EVDO ( Evolution, Data Only )系统中扩展同频同伪随机噪声小区覆盖范围的方法。
背景技术
CDMA20001x EVDO技术是 CDMA2000标准系列的一个分支， 是第三 代通信系统 ( The Third-Generation Communication System, 简称 3G ) 家族重 要的一个无线数据通信国际标准， EVDO技术专门为高速无线数据业务提供 支持平台。 EVDO网络可以与提供语音业务和低速数据业务的 CDMA2000 IX 网络共同组网， 共享频段。 EVDO 高速数据网络目前在国内和国际通信市场 正处于大规模建设时期， 未来前景广阔。 基于 EVDO网络， 无线运营商可为 用户提供 Web浏览， 视频点播 VOD, 可视电话 VT, IP电话 VOIP, 视频广 播等各种多媒体业务。
CDMA2000 IX EVDO网络由基本单元即蜂窝小区组成， 是典型的蜂窝 移动通信数据网络。 一个 DO蜂窝小区具备处理 DO无线业务的基本功能， 主要的特征指标包括小区覆盖范围， 小区处理能力， 小区信号质量等。 小区 的重要无线特征参数包括小区 ID (标识） ， 小区 PN (伪随机噪声） ， 小区 开销消息等。 小区之间的交叉覆盖区域称为切换区， 移动终端在切换区可以 收到多个小区的信号， 可接受多个小区的服务。 切换是蜂窝系统的基本特征。 在 EVDO系统中， 切换区的大小、 切换的性能是影响系统质量非常重要的因 素。
DO蜂窝小区间的切换问题， 涉及小区伪随机噪声（ Pseudorandom Noise,
PN )值、 小区的覆盖能力等概念。 小区 PN值的物理含义是前向导频信号的 码分多址相位， 属于 CDMA信号的基本参数之一。 相邻小区可以使用同频点 的不同 PN值进行组网， 终端可以根据 PN值区分出导频信号来源。 小区的覆 盖能力表述小区业务覆盖的物理范围。 单小区覆盖范围越广， 表明支持用户 无线接入的物理距离越大； 反之支持的物理距离越小。 如果在面积一定的特 定城市区域部署 EVDO网络， 显然在不考虑小区容量和处理能力等其他因素 情况下， 所需要的 DO蜂窝小区数目跟小区的覆盖范围成反比。 即单小区覆 盖范围越大， 需要的小区数目越少； 单小区覆盖范围越小， 需要的小区数目 越多。
切换问题是移动蜂窝系统无法回避的一个问题。 切换需要占用无线解调 单元， 声码器单元等各种系统资源。 一个切换率高的系统必然导致系统总体 容量降低， 同时切换现象大量存在容易引起掉话率上升。 对于切换区来说， 提高业务性能的常用方法是优化切换相关的业务参数， 如各种切换门限的设 置， 切换定时器的设置， 切换算法的优化等。 如何减少切换区域， 提高切换 区性能， 是 EVDO网络系统中的一个研究热点问题。
发明内容
本发明提供了一种扩展同频同伪随机噪声小区覆盖范围的方法和系统， 减少通信连接无线掉话率， 提高切换区的业务性能。
为了解决上述问题， 本发明提供了一种扩展同频同伪随机噪声小区覆盖 范围的方法， 包括： 在组网范围内设置一个或多个虚拟小区， 每个虚拟小区 包含一个或多个具有相同载频和相同伪随机噪声值的元小区； 设置每个虚拟 小区内元小区间的切换关系为更软切换关系； 基站收发信机对属于同一虚拟 小区中不同元小区的信号进行相同的处理。
进一步地，
上述方法还包括：
在每个虚拟小区中的元小区中确定一参考小区， 每个虚拟小区中所确定 的参考小区之外的元小区为非参考小区；
基站收发信机对属于同一虚拟小区中不同元小区的信号进行相同的处理 的所述步骤包括： 基站收发信机使用参考小区的配置参数对虚拟小区中各元 小区的信号进行处理。 进一步地， 上述方法还具有以下特点：
参考小区是虚拟小区中主业务所在的元小区之一。
进一步地， 上述方法还具有以下特点：
基站收发信机使用参考小区的配置参数对虚拟小区中各元小区的信号进 行处理的所述步骤包括： 基站控制器向虚拟小区中元小区发送前向信号时， 基站收发信机将所述前向信号均标识为参考小区， 根据参考小区的配置参数 对接收到的前向信号进行配置后， 向虚拟小区的覆盖范围进行射频发送。
进一步地， 上述方法还具有以下特点：
基站收发信机使用参考小区的配置参数对虚拟小区中各元小区的信号进 行处理的所述步骤包括： 虚拟小区中元小区内的移动终端发送反向信号时， 基站收发信机将非参考小区的反向信号的来源标识为参考小区的标识， 并发 送至基站控制器。
本发明还提供了一种支持扩展同频同伪随机噪声小区覆盖范围的系统的 基站收发信机，
所述基站收发信机设置成在管理范围内设置一个或多个虚拟小区， 其中 每个虚拟小区包含一个或多个具有相同载频和相同伪随机噪声值的元小区； 设置虚拟小区内元小区间的切换关系为更软切换关系， 并对属于同一虚拟小 区中不同元小区的信号进行相同的处理。
进一步地， 上述基站收发信机还具有以下特点：
所述基站收发信机设置成在对同一虚拟小区中不同元小区的信号进行相 同的处理时， 是使用参考小区的配置参数对虚拟小区中各元小区的数据进行 处理的， 所述参考小区是所述虚拟小区中元小区中的一个。
进一步地， 上述基站收发信机还具有以下特点：
参考小区是虚拟小区中主业务所在的元小区之一。
进一步地， 上述基站收发信机还具有以下特点：
所述基站收发信机包括业务层模块、 基带处理模块、 射频模块； 所述业务层模块设置成将接收到的基站控制器向虚拟小区中元小区发送 的前向信号均标识为参考小区， 并发送给基带处理模块；
所述基带处理模块设置成根据参考小区的配置参数对接收到的前向信号 进行配置后， 发送至射频模块； 所述射频模块设置成将所述前向信号向虚拟 小区的覆盖范围发送。
进一步地， 上述基站收发信机还具有以下特点：
所述基站收发信机还设置成接收到虚拟小区中元小区内的移动终端发送 的反向信号后， 将非参考小区的反向信号的来源标识为参考小区的标识， 并 发送至基站控制器。
本发明还提供一种扩展同频同伪随机噪声小区覆盖范围的系统， 包括如 上所述的基站收发信机和基站控制器。
进一步地， 上述系统中， 所述基站控制器设置成向虚拟小区中元小区发 送前向信号。
本发明通过扩展 DO小区（即配置了 DO载频的小区）的同频同 PN覆盖 范围， 来减少切换区域， 达到降低切换率和掉话率、 提高系统容量的目的， 解决无线移动通信系统中因蜂窝小区覆盖范围有限而造成的通信连接无线掉 话和频繁切换的问题。 在高速铁路或者室内密集分布的应用场景， EVDO 网 络优化人员可以根据需要选择使用本功能。 此方法和系统可以兼容之前的系 统设计， 支持与不使用此技术的 DO 正常小区混合组网。 本发明对于改善 EVDO系统中切换区的业务性能有显著效果。
附图概述
图 1是实施例中扩展同频同伪随机噪声小区覆盖范围的方法的流程图。
本发明的较佳实施方式
一种扩展同频同伪随机噪声小区覆盖范围的系统， 包括基站收发信机和 基站控制器，
基站收发信机， 用于在管理范围内设置一个或多个虚拟小区， 虚拟小区 包含一个或多个具有相同载频和相同伪随机噪声值的元小区， 设置虚拟小区 内元小区间的切换关系为更软切换关系， 并对属于同一虚拟小区中不同元小 区的信号进行相同的处理； 还用于使用参考小区的配置参数对虚拟小区中各 元小区的数据进行处理， 所述参考小区是虚拟小区中主业务所在的元小区之 一。 还用于接收到虚拟小区中元小区内的移动终端发送的反向信号后， 将非 参考小区的反向信号的来源标识为参考小区的标识， 并发送至基站控制器。
所述基站收发信机包括业务层模块、 基带处理模块、 射频模块； 基站控制器， 还用于向虚拟小区中元小区发送前向信号；
业务层模块， 用于将接收到的前向信号均标识为参考小区， 并发送给基 带处理模块；
基带处理模块， 用于根据参考小区的配置参数对接收到的前向业务消息 进行配置后， 发送至射频模块；
所述射频模块， 用于将所述前向业务消息向虚拟小区的覆盖范围发送。 如图 1所示， 扩展同频同伪随机噪声小区覆盖范围的方法包括： 步骤 101 , 在组网范围内设置一个或多个虚拟小区， 虚拟小区包含一个 或多个具有相同载频和相同伪随机噪声值的元小区； 设置虚拟小区内元小区 间的切换关系为更软切换关系；
根据网络部署的配置需要，设置虚拟小区， 虚拟小区由多个元小区组成， 此处元小区是指包括 CDMA系统中一般意义上的蜂窝小区， 同一虚拟小区内 各元小区在物理上分别覆盖不同的物理范围 （可以是相邻的关系） ， 设置同 一虚拟小区内各元小区输出相同载频和相同伪随机噪声值的无线信号。
设置虚拟小区内元小区间的切换关系为更软切换关系。 "更软切换" 是 指同一基带芯片处理的不同小区间的切换， "更软切换" 相比于 "软切换" 可以减少切换时延。
系统将虚拟小区的配置参数 (如组成虚拟小区的元小区 ID,虚拟小区的参 考小区的参数等)配置在基站收发信机中， 包括以下步骤：
步骤 1 , 在系统用户接口界面中人工输入虚拟小区的配置信息； 虚拟小区的配置信息包括虚拟小区各元小区的标识、 各元小区的更软切 换关系、 参考小区标识、 参考小区的配置参数、 扇区的天线参数、 接入信道 参数、 前向时延参数， 反向时延参数等。 从虚拟小区包括的元小区中选择参 考小区时， 将虚拟小区中主业务所在的元小区之一作为参考小区， 因为使用 主业务的移动终端较多， 选择主业务所在元小区作为参考小区， 更有利于减 少终端的降低切换率和掉话率。
步骤 2, 将虚拟小区的配置信息配置到基站收发信机；
步骤 3 , 基站收发信机的基带主控模块将虚拟小区的配置信息映射为底 层参数组，通过基带处理芯片配置接口将基带芯片参数配置到基带处理芯片， 通过基带逻辑芯片配置接口将基带逻辑参数配置到基带逻辑芯片；
基带芯片参数包括虚拟小区各元小区的更软切换关系， 各元小区 ID, 参 考小区 ID, 各扇区的天线参数、 接入信道参数等；
基带逻辑参数包括前向时延参数， 反向时延参数等逻辑参数。
本发明中的改进只涉及基站收发信机的改动， 不涉及对基站控制器的改 动。
步骤 102, 基站收发信机对属于同一虚拟小区中不同元小区的信号进行 相同的处理， 流程结束。
在前向信号处理上， 非参考小区的基带信号通过基带主控模块根据参考 小区的配置参数进行配置， 并发送至射频模块进行发射； 在反向信号处理上， 非参考小区的反向信号在传输到系统业务层时， 统一映射到参考小区。 这样， 从系统业务层的角度， 虚拟小区跟一个正常小区的功能没有任何差别。 因此， 本方法保证了不需要改动扇区以上的系统业务层处理逻辑， 实现同频同 PN 信号的扩展覆盖。
以一虚拟小区中包括参考小区 R, 非参考小区 A, B为例， 对前向信号 的具体处理流程包括以下步骤：
步骤 1 , 基站控制器向虚拟小区中元小区发送前向信号；
步骤 2, 因为非参考小区 A和 B均是以小区 R为参考小区， 基站收发信 机的业务层模块将接收到的向虚拟小区发送的前向信号均标识为参考小区 R, 并发送给基带处理模块； 步骤 3 , 基带处理模块接收标识为参考小区 R的前向业务消息， 并参考 其保存的虚拟小区的配置信息， 基带主控模块根据参考小区的配置参数对接 收到的前向业务消息进行配置， 并发送至射频模块；
步骤 4, 基站收发信机的射频处理模块将接收到的前向业务消息进行射 频发送， 发送的范围是整个虚拟小区的覆盖范围， 即元小区 R, A, B的覆盖 范围的总和。
以一虚拟小区中包括参考小区 R, 非参考小区 A, B为例， 对反向信号 的具体处理流程包括以下步骤：
步骤 1 , 虚拟小区中的移动终端发射反向信号；
步骤 2, 基站收发信机的射频处理模块接收此反向信号并进行频域处理 后发送至基带处理模块；
步骤 3 , 基站收发信机的基带处理模块解析得到反向基带信号， 发送至 基站收发信机的业务层处理模块；
步骤 4, 此反向信号是参考小区内的移动终端发出的反向信号时， 业务 层处理模块将此反基带信号发送至基站控制器； 此反向信号是非参考小区内 的移动终端发出的反向信号时， 业务层处理模块将非参考小区的反向信号的 来源标识为参考小区的标识， 并发送至基站控制器；
步骤 5 , 基站控制器统一处理来自虚拟小区的反向消息， 在基站控制器 看来， 处理的是此虚拟小区的反向信号均是参考小区 R的反向信号， 移动终 端在此虚拟小区的各元小区间切换时，基站控制器无需感知和处理这些切换， 这样减少基站控制器的数据处理量， 减少基站控制器对移动终端的切换操作 的处理， 也同时降低移动终端的掉话率。
上述方法， 通过在 EVDO系统中扩展同频同 PN小区的覆盖范围， 达到 减少切换区域、 降低切换率和掉话率、 提高系统容量的目的。
以上实施例仅用以说明本发明的技术方案而非限制， 尽管参照较佳实施 例对本发明进行了详细说明， 本领域的普通技术人员应当理解， 可以对本发 明的技术方案进行修改或者等同替换， 而不脱离本发明技术方案的精神和范 围， 其均应涵盖在本发明的权利要求范围当中。 工业实用性 与现有技术相比， 本发明通过在 EVDO系统中扩展同频同 PN小区的 ^ 盖范围， 达到减少切换区域、 降低切换率和掉话率、 提高系统容量的目的。

Claims

权 利 要 求 书
1、 一种扩展同频同伪随机噪声小区覆盖范围的方法， 包括：
在组网范围内设置一个或多个虚拟小区， 每个虚拟小区包含一个或多个 具有相同载频和相同伪随机噪声值的元小区；
设置每个虚拟小区内元小区间的切换关系为更软切换关系； 以及 基站收发信机对属于同一虚拟小区中不同元小区的信号进行相同的处 理。
2、 如权利要求 1所述的方法， 所述方法还包括： 在每个虚拟小区中的元 小区中确定一参考小区， 每个虚拟小区中所确定的参考小区之外的元小区均 为非参考小区；
基站收发信机对属于同一虚拟小区中不同元小区的信号进行相同的处理 的所述步骤包括： 基站收发信机使用参考小区的配置参数对虚拟小区中各元 小区的信号进行处理。
3、 如权利要求 2所述的方法， 其中，
参考小区是虚拟小区中主业务所在的元小区之一。
4、 如权利要求 2或 3所述的方法， 其中，
基站收发信机使用参考小区的配置参数对虚拟小区中各元小区的信号进 行处理的所述步骤包括： 基站控制器向虚拟小区中元小区发送前向信号时， 基站收发信机将所述前向信号均标识为参考小区， 根据参考小区的配置参数 对接收到的前向信号进行配置后， 向虚拟小区的覆盖范围进行射频发送。
5、 如权利要求 2或 3所述的方法， 其中，
基站收发信机使用参考小区的配置参数对虚拟小区中各元小区的数据进 行处理的所述步骤包括： 虚拟小区中元小区内的移动终端发送反向信号时， 基站收发信机将非参考小区的反向信号的来源标识为参考小区的标识， 并发 送至基站控制器。
6、 一种支持扩展同频同伪随机噪声小区覆盖范围的系统的基站收发信 机， 所述基站收发信机设置成： 在管理范围内设置一个或多个虚拟小区， 其中每个虚拟小区包含一个或 多个具有相同载频和相同伪随机噪声值的元小区； 设置每个虚拟小区内元小 区间的切换关系为更软切换关系， 并对属于同一虚拟小区中不同元小区的信 号进行相同的处理。
7、 如权利要求 6所述的基站收发信机， 其中，
所述基站收发信机是设置成在对同一虚拟小区中不同元小区的信号进行 相同的处理时， 使用参考小区的配置参数来对同一虚拟小区中各元小区的信 号进行相同的处理的， 所述参考小区是所述虚拟小区中元小区中的一个。
8、 如权利要求 6所述的基站收发信机， 其中，
参考小区是虚拟小区中主业务所在的元小区之一。
9、 如权利要求 7或 8所述的基站收发信机， 其中，
所述基站收发信机包括业务层模块、 基带处理模块以及射频模块； 所述业务层模块设置成将接收到的基站控制器向虚拟小区中元小区发送 的前向信号均标识为参考小区， 并发送给基带处理模块；
所述基带处理模块设置成根据参考小区的配置参数对接收到的前向信号 进行配置后， 发送至射频模块；
所述射频模块设置成将所述前向信号向虚拟小区的覆盖范围发送。
10、 如权利要求 7或 8所述的基站收发信机， 其中，
所述基站收发信机还设置成接收到虚拟小区中元小区内的移动终端发送 的反向信号后， 将非参考小区的反向信号的来源标识为参考小区的标识， 并 发送至基站控制器。
11、 一种扩展同频同伪随机噪声小区覆盖范围的系统， 包括如权利要求 6-10中任一项所述的基站收发信机和基站控制器。
12、如权利要求 11所述的系统， 其中所述基站控制器设置成向虚拟小区 中元小区发送前向信号。
PCT/CN2009/074160 2009-07-23 2009-09-23 一种扩展同频同伪随机噪声小区覆盖范围的方法和系统 WO2011009246A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910159948.0A CN101964984B (zh) 2009-07-23 2009-07-23 一种扩展同频同伪随机噪声小区覆盖范围的方法和系统
CN200910159948.0 2009-07-23

Publications (1)

Publication Number Publication Date
WO2011009246A1 true WO2011009246A1 (zh) 2011-01-27

Family

ID=43498715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/074160 WO2011009246A1 (zh) 2009-07-23 2009-09-23 一种扩展同频同伪随机噪声小区覆盖范围的方法和系统

Country Status (2)

Country Link
CN (1) CN101964984B (zh)
WO (1) WO2011009246A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111246551A (zh) * 2020-01-13 2020-06-05 武汉虹信通信技术有限责任公司 一种获取虚拟多载波通信系统终端占用频点的方法及系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111294822A (zh) * 2018-12-10 2020-06-16 中兴通讯股份有限公司 一种虚拟小区的实现方法、装置及计算机可读存储介质
CN114765812A (zh) * 2021-01-13 2022-07-19 中国移动通信有限公司研究院 切换方法、装置、终端及网络设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1671238A (zh) * 2004-03-17 2005-09-21 华为技术有限公司 一种实现更软切换的无线接入网络系统及方法
CN101115287A (zh) * 2006-07-26 2008-01-30 华为技术有限公司 通信方法及系统、数据传输方法及系统、以及通信方式结合方法及系统
US20080096569A1 (en) * 2006-09-11 2008-04-24 Qualcomm Incorporated Sfn and signaling mechanisms for softer handoff groups
CN101478799A (zh) * 2009-02-05 2009-07-08 中兴通讯股份有限公司 信号覆盖方法、码分多址接入无线蜂窝通信系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1671238A (zh) * 2004-03-17 2005-09-21 华为技术有限公司 一种实现更软切换的无线接入网络系统及方法
CN101115287A (zh) * 2006-07-26 2008-01-30 华为技术有限公司 通信方法及系统、数据传输方法及系统、以及通信方式结合方法及系统
US20080096569A1 (en) * 2006-09-11 2008-04-24 Qualcomm Incorporated Sfn and signaling mechanisms for softer handoff groups
CN101478799A (zh) * 2009-02-05 2009-07-08 中兴通讯股份有限公司 信号覆盖方法、码分多址接入无线蜂窝通信系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111246551A (zh) * 2020-01-13 2020-06-05 武汉虹信通信技术有限责任公司 一种获取虚拟多载波通信系统终端占用频点的方法及系统
CN111246551B (zh) * 2020-01-13 2022-04-22 武汉信科移动通信技术有限公司 一种获取虚拟多载波通信系统终端占用频点的方法及系统

Also Published As

Publication number Publication date
CN101964984B (zh) 2013-08-07
CN101964984A (zh) 2011-02-02

Similar Documents

Publication Publication Date Title
JP5437509B2 (ja) マルチメディア・ブロードキャスト・マルチキャスト・サービス受信の処理方法及び関連通信装置
JP5069685B2 (ja) 基地局および移動局並びにセル選択方法
RU2425453C2 (ru) Способ и устройство для работы блока беспроводной передачи/приема в специализированных сотах услуг мультимедийного широковещания/мультивещания
JP5258569B2 (ja) 基地局および移動局並びに移行先セル設定方法
JP6813593B2 (ja) データ伝送のための方法、端末と基地局
CN102291759B (zh) 接收能力上报的方法及设备
CN101252786B (zh) 一种基站、无线通信系统及切换方法
TW201404202A (zh) 在懼碰撞實體層信號胞元間選擇或再選擇家用節點ｂ（封閉用戶組（ｃｓｇ）胞元）之方法及裝置
KR20070034118A (ko) 소프트 핸드오프를 사용하는 가변 레이트의 브로드캐스트
GB2385745A (en) A mobile subscriber unit selects carriers belonging to a different communication system in a dual second and third generation system
EP2770779B1 (en) Communication method of sharing one cell, base station controller, base station and communication system thereof
JP2021518063A (ja) チャネル送信方法及び関連製品
WO2013177934A1 (zh) 一种能力同步方法、设备及通信系统
CN108541022B (zh) 一种实现网络负载均衡的方法及装置
CN103313331A (zh) 制式切换方法及装置
US20050113023A1 (en) Method of managing communications in a network and the corresponding signal, transmitting device and destination terminal
JP6538313B2 (ja) 干渉調整方法および基地局
CN101267661B (zh) 移动性处理的方法、装置和系统
CN1953347B (zh) 无线信号发送、接收方法及系统
WO2017028053A1 (zh) 通信方法、处理装置、通信设备和通信系统
WO2011009246A1 (zh) 一种扩展同频同伪随机噪声小区覆盖范围的方法和系统
CN103517298B (zh) 用于无线中继网络的切换测量方法、系统及中继节点
CN100586043C (zh) 用于识别无线基站的方法和系统
US10820351B2 (en) Random access method and apparatus
JP2004343309A (ja) 無線ネットワーク装置および無線ネットワーク装置のリソース割り当て方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09847481

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09847481

Country of ref document: EP

Kind code of ref document: A1