WO2007022684A1 - Procédé de détection de connexion dans une procédure d’appel entre bsc et msc - Google Patents

Procédé de détection de connexion dans une procédure d’appel entre bsc et msc Download PDF

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Publication number
WO2007022684A1
WO2007022684A1 PCT/CN2006/001726 CN2006001726W WO2007022684A1 WO 2007022684 A1 WO2007022684 A1 WO 2007022684A1 CN 2006001726 W CN2006001726 W CN 2006001726W WO 2007022684 A1 WO2007022684 A1 WO 2007022684A1
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WO
WIPO (PCT)
Prior art keywords
switching center
base station
mobile switching
station controller
check
Prior art date
Application number
PCT/CN2006/001726
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English (en)
French (fr)
Inventor
Jiecheng He
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to DE602006009777T priority Critical patent/DE602006009777D1/de
Priority to AT06761462T priority patent/ATE445977T1/de
Priority to CNA2006800123927A priority patent/CN101161021A/zh
Priority to EP06761462A priority patent/EP1860908B1/en
Publication of WO2007022684A1 publication Critical patent/WO2007022684A1/zh
Priority to US11/872,103 priority patent/US7974594B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/08Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/04Interfaces between hierarchically different network devices
    • H04W92/14Interfaces between hierarchically different network devices between access point controllers and backbone network device

Definitions

  • the present invention relates to the field of communications technologies, and more particularly to a method for conducting a check in a call between a base station controller and a mobile switching center.
  • the inter-office TUP (Telephone User Part), ISUP (ISDN User Part), and the relay connection error (including the line and loopback, etc.) will result in the call.
  • Crosstalk single pass, double no pass, etc. Under normal circumstances, you need to use the self-loop, pull E1 or specify the circuit dial test to locate the problem of relay error.
  • the error can only be checked by self-loop, E1 or specified circuit dialing. Assume that there are 10 E1 connections between two NEs. The 10 E1 interfaces (1 to 10) of NE A need to be connected to 10 E1 interfaces (1 to 10) of NE B. The maintenance personnel of B can self-loop or insert E1 on E1, causing the E1 connection to be interrupted or connected. Then, the maintenance personnel of NE A check whether the E1 connection on the No. 1 E1 port of the A-network element is interrupted or connected. Pass to determine if this E1 connection is correct. Repeat this process to check all E1 ports.
  • the maintenance personnel can perform the actual telephone dial test, and use the designated dial test function to make the call occupy the channel that needs to test E1. If the voice call is normal, it means this. E1 connection is no problem.
  • the technical problem to be solved by the present invention is to provide a method for conducting and detecting a call during a call between a base station controller and a mobile switching center in view of the shortcomings of the prior art that the circuit error cannot be quickly and conveniently located.
  • the technical solution adopted by the present invention to solve the technical problem thereof is: constructing a continuity check method in a call process between a base station controller and a mobile switching center, comprising the following steps: (a) the mobile switching center will self-loop the circuit and send a continuity check command to the base station controller;
  • the base station controller performs a continuity check according to the continuity check command, and if the continuity check is successful, sends a conduction check success flag to the mobile switching center, instructing the mobile switching center to cancel the circuit self-loop;
  • the continuity check fails, and the base station controller sends a clear request message to the mobile switching center to remove the communication connection and cancel the circuit self-loop.
  • the continuity check is implemented by the assignment request message sent by the mobile switching center to the base station controller.
  • the sending of the instruction, the request request message includes a request to conduct a check instruction.
  • the step (b) the implementation of the assignment completion message sent by the base station controller to the mobile switching center is implemented. Passing the verification success flag, the assignment completion message includes a continuity check success flag Q
  • the method further includes the base station controller transmitting a request message with the continuity check flag to the mobile switching center, instructing the mobile switching center to perform the continuity check. A step of.
  • the base station controller is a base station controller on the calling side, and the mobile switching center is a mobile switching center on the calling side.
  • the request message with the continuity check flag is a CM service request message; or the base station controller is a base station controller on the called side, and the mobile switching center is a mobile switching center on the called side, the tape guide
  • the request message of the pass check flag is a page response message.
  • the continuity check is performed according to the following steps:
  • the invention also provides a continuity check method in a call process between a base station controller and a mobile switching center, comprising the following steps:
  • the calling side mobile switching center sends a request for the continuity check command to the calling side base station controller after the circuit is self-looped;
  • the base station controller performs a continuity check according to the continuity check command, and if the calling side conduction test is successful, the calling side base station controller sends a conduction check to the calling side mobile switching center.
  • a success flag indicating that the calling side mobile switching center cancels the circuit self-loop and performs a conducting check on the called side; if the calling side conduction check fails, the calling side base station controller moves to the calling side The center sends a clear request message, instructing the calling side mobile switching center to remove the communication connection and cancel the circuit self-loop.
  • the conduction check on the called side is performed according to the following steps:
  • the called side mobile switching center sends a request for the continuity check command to the called side base station controller after the circuit is self-looped;
  • the base station controller performs a continuity check according to the continuity check command, and if the called side conduction check succeeds, the called side base station controller sends a conduction check to the called side mobile switching center. a success indicator to indicate that the called side mobile switching center cancels the circuit self-loop; if the continuity check fails, the called side base station controller sends a clearing request message to the called side mobile switching center, indicating the called side mobile switching center Remove the communication connection and cancel the circuit self-loop of the called side mobile switching center.
  • the calling side base station controller before the calling side mobile switching center is self-looped, further includes sending the calling side base station controller to the calling side mobile switching center.
  • the called side base station controller before the called side mobile switching center is self-looped, the called side base station controller further sends the called side base station controller to the called side mobile switching center. a step of paging a response message, the paging response message including a continuity check flag.
  • the continuity check is performed according to the following steps: the base station controller sends a tone to the de-route of the de-circuit connected thereto, and if the base station controller receives the tone on the return path of the de-circuit connected thereto, and If the transmission capacity and implementation of the tone meet the predetermined requirements, the continuity check is successful; if the base station controller does not receive the tone on the return path of the connected circuit connected thereto, or receives the transmission of the tone If the shield quantity and implementation do not meet the predetermined requirements, the continuity test fails.
  • the continuity check method in the call process of the base station controller and the mobile switching center of the present invention can quickly and conveniently locate the connection error by adding a continuity check command to the message of the A interface without changing the call flow.
  • FIG. 1 is a schematic structural diagram of a system for implementing a specific embodiment of the present invention
  • FIG. 2 is a schematic diagram of a call flow according to an embodiment of the present invention.
  • Figure 3 is a flow chart showing the method of conducting a check during a call in the embodiment of Figure 2.
  • FIG. 1 it is a schematic diagram of a system configuration for implementing a continuity check method in a call process of the present invention.
  • the system includes a plurality of base station controllers (BSCs) (only two are shown in the figure, namely, the calling side base station controller 11 and the called side base station controller 14), and a plurality of mobile switching centers (MSCs) (only Two are shown, namely, the calling side mobile switching center 12 and the called side mobile switching center 13), and the home location register (HLR) 16.
  • BSCs base station controllers
  • MSCs mobile switching centers
  • the calling side base station controller 11 is connected to the calling side switching center 12 through the A interface
  • the called side base station controller 14 is connected to the called side mobile switching center 13 through the A interface
  • the calling side mobile switching center 12 passes the B.
  • the interface is connected to the called side mobile switching center 13.
  • the calling side mobile switching center 12 and the called side mobile switching center 13 are also connected to the home location register 16 via the C interface, respectively.
  • the base station controller includes a wireless transceiver, an antenna, and related signal processing circuits, and generally includes four main components: a cell controller (CSC), a voice channel controller (VCC), and a signaling channel controller (SCC). ) and Multi-End Interface (EMPI) for expansion.
  • the base station controller is responsible for all communication interface management, mainly the allocation, dry play and management of the wireless channel.
  • the Mobile Switching Center (MSC) is primarily used for communication control and management.
  • HLR Home Location Register
  • the contents of the registration are divided into two categories: one is permanent parameters, such as user number, mobile device number, priority of access, predetermined service type, and security parameters; the other is temporary and needs to be updated at any time.
  • the parameter which is the relevant parameter of the user's current location.
  • the A interface standard defines all functional interfaces between the base station (BS) and the mobile switching center (MSC), including message interfaces and procedures, so that the base stations of different equipment vendors and the MSC equipment are seamlessly interconnected. .
  • Fig. 2 and Fig. 3 it is a schematic flow chart of the continuity check method in the call process of the present invention.
  • the invention adds a continuity check command to the message transmitted between the base station controller and the mobile switching center to implement the continuity check between the base station controller and the mobile switching center, thereby quickly and conveniently positioning the communication. Errors in the connection (such as twist lines, loopbacks, etc.).
  • the present invention will be described below by way of an example of a call flow.
  • the calling side base station controller 11 and the calling side mobile switching center 12 are the calling side, and the called side mobile switching center 13 and the called side.
  • the base station controller 14 is the called side, and the signaling between the calling side mobile switching center 12 and the called side mobile switching center 13 is ISUP (actually, the SIP-T or BICC protocol can also be used between the MSCs, even It is the H.323 protocol for interoffice signaling).
  • the calling side base station controller 11 sends a CM Service Request (CM SERV REQ) message to the calling side switching center 12, where the CM service request message includes a continuity check flag, and the continuity check flag can be set as a CM service request.
  • CM SERV REQ CM Service Request
  • a parameter in the message the calling side mobile switching center 12 generates a request conducting check command according to the continuity check flag to indicate that the conducting check is performed during the call, and then the calling side mobile switching center 12 to the calling side base station
  • the controller 11 returns a connection confirmation (CC) message (step S31).
  • CC connection confirmation
  • the communication network subsystem performs address resolution (step S32), and the address resolution process specifically includes the following steps:
  • the calling side mobile switching center 12 sends a message to the home location register 16. a location request (LOC REQ) message; the home location register 16 then sends a route request (ROUTE REQ) message to the called side mobile switching center 13; the called side mobile switching center 13 returns a route request feedback to the home location register 16, the return
  • the routing request feedback includes the temporary local number of the called party; then the home location register 16 returns a location request message to the calling side mobile switching center 12, notifying the calling party of the location of the called party.
  • the calling side mobile switching center 12 transmits an Initialization Address Message (IAM) to the called side mobile switching center 13.
  • IAM Initialization Address Message
  • the conducting check of the calling side is performed, and the calling side mobile switching center 12 sends a circuit to the calling side base station controller 11 and sends an assignment request (ASSIGNMENT REQ) message, and the assignment request message includes The turn-on check command is requested, and the request-on check command initiates the call-side base station controller 11 to perform the continuity check (step S34), and judges whether the continuity check is successful (step S36).
  • ASSIGNMENT REQ assignment request
  • the conduction check and judgment on the calling side specifically includes the following steps:
  • the calling side base station controller 11 issues a tone to the de-route of the disconnected circuit connected thereto. If the continuity check fails, the calling side base station controller 11 does not receive the above tone on the return path of the circuit to which it is connected, or the transmission quality and implementation of the tone do not meet the predetermined requirements (refer to Q).
  • the calling side base station controller 11 sends a clear request (CLEAR REQ) message to the calling side mobile switching center 12, removes the communication connection, and causes the calling side mobile switching center 12 to cancel the self-loop (step S35) If the continuity check is passed, the calling side base station controller 11 receives a tone on the return path of the circuit to which it is connected, and the transmission quality and implementation of the tone meet the predetermined requirements (refer to Q.724). Standard), the calling side base station controller 11 returns an ASSIGNMENT CMP message to the calling side mobile switching center 12, and the assignment completion message includes a continuity check success flag (for example, in the form of a parameter in the message) ) to cancel the circuit self-loop by instructing the calling side mobile switching center.
  • a continuity check success flag for example, in the form of a parameter in the message
  • step S37 the conduction check on the called side is started (step S37), and it is judged whether or not the continuity check is successful (step S38).
  • the conducting check and the judgment on the called side specifically includes the following steps:
  • the called side mobile switching center 13 sends a paging (PAGING) message to the called side base station controller 14, and then the called side base station controls.
  • the device 14 returns a paging response to the called side mobile switching center 13, and the paging response message includes a continuity check flag (which can be set as a parameter in the paging response message) to indicate conduction Inspection, and the called side mobile switching center 13 then returns a Connection Confirmation (CC) message to the called side base station controller 14.
  • a continuity check flag which can be set as a parameter in the paging response message
  • the called-side mobile switching center 13 sends an ASSIGNMENT REQ message to the called-side base station controller 14, and the assignment request message includes a request-to-confirmation command (for example, in the message)
  • the parameter form exists, and the request continuity check command starts the called side base station controller 14 to perform the continuity check, and the process of the conduction check is similar to the conduction check process on the calling side.
  • the called side base station controller 14 sends a clear request (CLEAR REQ) message to the called side mobile switching center 13, disconnects the communication connection, and causes the called side mobile switching center 13 to cancel the self-loop (step S39).
  • the called side base station controller 14 If the continuity check is successful, the called side base station controller 14 returns an ASSIGNMENT CMP message to the called side mobile switching center 13, and the assignment completion message includes a continuity check success flag (for example, a message) The parameter form exists to indicate that the called side mobile switching center 13 cancels the circuit self-loop.
  • a continuity check success flag for example, a message
  • the system establishes a call connection, and the specific process is: the called side mobile switching center 13 returns an address full message (ACM) to the calling side mobile switching center 12; the called side base station controller 14 The called side mobile switching center 13 transmits a connection message; finally, the called side mobile switching center 13 transmits a response message to the calling side mobile switching center 12 (step S40).
  • ACM address full message
  • the invention does not change the flow of the A interface call, and realizes the A interface call process by extending the CM service request message, the assignment request message, the paging message (or the paging response message), and the assignment completion message content in the A interface protocol. Conduction test in the middle.

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  • Computer Networks & Wireless Communication (AREA)
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Description

基站控制器与移动交换中心呼叫过程中的导通检验方法
技术领域 本发明涉及通信技术领域, 更具体地说, 涉及一种基站控制器与移 动交换中心呼叫过程中的导通检验方法。
背景技术
在通信过程中,局间 TUP( Telephone User Part,电话用户部分)、 ISUP ( ISDN User Part, 综合业务数字网用户部分) 的中继对接错误 (包括鸳 鸯线以及环回等)将导致通话中的串话、 单通、 双不通等情况。 在通常 情况下, 需采用自环、 拔 E1或者指定电路拨测的方法来定位中继错误的 问题。
在 TDM ( time division multiplexing , 时分复用)类型的 Α接口电路 中却只能通过自环、 拔 E1或者指定电路拨测的方法进行核查错误。 假设 两个网元之间有 10根 E1连线, 网元 A的 10个 E1接口 (1 - 10号)需要 和网元 B的 10个 E1接口 (1 - 10号)相连, 首先由网元 B的维护人员对 1号 E1进行自环或者拔插 E1 , 导致 E1连接出现中断或者接通, 然后网 元 A的维护人员查看 A网元的 1号 E1端口是否出现相应的 E1连接中断 和接通, 来确定此 E1的连接是否正确。 重复此过程, 检查所有的 E1端 口。 如果采用指定电路拨测的方法, 在 E1接通后, 可以由维护人员进行 实际的电话拨测,利用指定拨测的功能,使呼叫占用需要测试 E1的通道, 如果语音通话正常, 则表示此 E1连接是没有问题的。
可以看出, 上面这些手段都是比较麻烦的, 而且不能快速方便地定 位电路错误, 从而增加了维护的成本。
发明内容
本发明要解决的技术问题在于, 针对现有技术不能快速方便定位电 路错误的缺陷, 提供一种基站控制器与移动交换中心呼叫过程中的导通 检险方法。
本发明解决其技术问题所采用的技术方案是: 构造一种基站控制器 与移动交换中心呼叫过程中的导通检验方法, 包括以下步骤: ( a )移动交换中心将电路自环并向基站控制 器发送导通检验指令;
( b )所述基站控制器根据所述导通检验指令进行导通检验, 若导通 检验成功, 向所述移动交换中心发送导通检 ¾成功标志, 指示移动交换 中心取消电路自环; 若导通检验失败, 所述基站控制器向移动交换中心 发送清除请求消息以拆除通信连接及取消电路自环。
在本发明所述的基站控制器与移动交换中心呼叫过程中的导通检验 方法中, 所述步骤(a ) 中, 通过由移动交换中心向基站控制器发送的指 配请求消息实现导通检验指令的发送, 所述指配请求消息中包含有请求 导通检验指令。
在本发明所述的基站控制器与移动交换中心呼叫过程中的导通检验 方法中, 所述步驟(b ) 中, 通过由所述基站控制器向移动交换中心发送 的指配完成消息实现导通检验成功标志的发送, 所述指配完成消息包含 有导通检验成功标志 Q
在本发明所述的基站控制器与移动交换中心呼叫过程中的导通检验 方法中, 还包括基站控制器向移动交换中心发送带导通检验标志的请求 消息 , 指示移动交换中心进行导通检验的步骤。
在本发明所述的基站控制器与移动交换中心呼叫过程中的导通检验 方法中, 所述基站控制器为主叫侧的基站控制器, 所述移动交换中心为 主叫侧的移动交换中心, 所述带导通检验标志的请求消息为 CM业务请 求消息; 或者所述基站控制器为被叫侧的基站控制器, 所述移动交换中 心为被叫侧的移动交换中心, 所述带导通检验标志的请求消息为寻呼响 应消息。
在本发明所述的基站控制器与移动交换中心呼叫过程中的导通检验 方法中, 按照下述步驟进行导通检验:
( al )基站控制器向与其连接的去电路的去通路发出单音,若基站控 制器在与其连接的去电路的回通路上收到所述单音, 且所述单音的传输 质量和实现符合预定的要求, 则导通检验成功; 若基站控制器在与其连 接的去电路的回通路上未收到所述单音, 或收到单音的传输质量和实现 不符合预定的要求, 则导通检验失败。 本发明还提供一种基站控制器与移动交换中心呼叫过程中的导通检 验方法, 包括以下步骤:
( a )主叫侧移动交换中心将电路自环后向主叫侧基站控制器发送请 求导通检验指令;
( b )所述基站控制器根据所述导通检验指令进行导通检验, 若主叫 侧导通检验成功 , 所述主叫侧基站控制器向所述主叫侧移动交换中心发 送导通检验成功标志, 指示所述主叫侧移动交换中心取消电路自环, 并 执行被叫侧的导通检验; 若主叫侧导通检验失败, 所述主叫侧基站控制 器向主叫侧移动交换中心发送清除请求消息, 指示所述主叫侧移动交换 中心拆除通信连接及取消电路自环。
在本发明所述的基站控制器与移动交换中心呼叫过程中的导通检验 方法中, 按照下述步骤进行被叫侧的导通检验:
( bl )被叫侧移动交换中心将电路自环后向所述被叫侧基站控制器 发送请求导通检验指令;
( b2 )所述基站控制器根据所述导通检验指令进行导通检验, 若被 叫侧导通检验成功, 所述被叫侧基站控制器向所述被叫侧移动交换中心 发送导通检验成功标志以指示被叫侧移动交换中心取消电路自环; 若导 通检验失败, 所述被叫侧基站控制器向被叫侧移动交换中心发送清除请 求消息, 指示所述被叫侧移动交换中心拆除通信连接及取消被叫侧移动 交换中心的电路自环。
在本发明所述的基站控制器与移动交换中心呼叫过程中的导通检验 方法中, 在主叫侧移动交换中心自环之前, 还包括主叫侧基站控制器向 主叫侧移动交换中心发送 CM业务请求消息的步驟, 其中所述 CM业务 请求消息包含有导通检验标志。
在本发明所述的基站控制器与移动交换中心呼叫过程中的导通检验 方法中, 在被叫侧移动交换中心自环之前, 还包括被叫侧基站控制器向 被叫侧移动交换中心发送寻呼响应消息的步骤, 所述寻呼响应消息包含 有导通检验标志。
在本发明所述的基站控制器与移动交换中心呼叫过程中的导通检验 方法中, 按照下述步骤进行导通检验: 基站控制器向与其连接的去电路 的去通路发出单音, 若基站控制器在与其连接的去电路的回通路上收到 所述单音, 且所述单音的传输盾量和实现符合预定的要求, 则导通检验 成功; 若基站控制器在与其连接的去电路的回通路上未收到所述单音 , 或收到单音的传输盾量和实现不符合预定的要求, 则导通检验失败。
本发明的基站控制器与移动交换中心呼叫过程中的导通检验方法, 在不改变呼叫流程的前提下,通过在 A接口的消息中加入导通检验指令, 实现了快速方便地定位连接错误。
附图说明 下面将结合附图及实施例对本发明作进一步说明, 附图中: 图 1是实现本发明一个具体实施例的系统结构示意图;
图 2是本发明一个具体实施例的呼叫流程示意图;
图 3是图 2所述实施例的呼叫过程中导通检验方法的流程图。
具体实施方式 如图 1 所示, 是实现本发明呼叫过程中导通检验方法的系统结构示 意图。 该系统包括多个基站控制器(BSC ) (图中仅示出两个, 即主叫侧 基站控制器 11和被叫侧基站控制器 14 )、 多个移动交换中心(MSC ) (图 中仅示出两个, 即主叫侧移动交换中心 12和被叫侧移动交换中心 13 )、 以及归属位置寄存器(HLR ) 16。 其中, 主叫侧基站控制器 11通过 A接 口与主叫侧交换中心 12连接, 被叫侧基站控制器 14通过 A接口与被叫 侧移动交换中心 13连接, 主叫侧移动交换中心 12通过 B接口与被叫侧 移动交换中心 13连接, 此外, 主叫侧移动交换中心 12和被叫侧移动交 换中心 13还分别通过 C接口与归属位置寄存器 16连接。
基站控制器(BSC )包括无线收发信机、 天线和有关的信号处理电路 等, 通常主要包括四个部件: 小区控制器 (CSC)、话音信道控制器 (VCC)、 信令信道控制器 (SCC)和用于扩充的多路端接口 (EMPI)。基站控制器负责 所有的通信接口管理, 主要是无线信道的分配、 幹放和管理。 移动交换 中心 (MSC )主要用于进行通信控制和管理。 例如信道的管理和分配; 呼叫的处理和控制; 过区切换和漫游的控制; 用户位置信息的登记与管 理; 用户号码和移动设备号码的登记和管理; 服务类型的控制; 对用户 实施鉴权; 为系统中连接别的 MSC及为其它公用通信网络, 如公用交换 电信网 (PSTN )、 综合 业务数字网 (ISDN )和公用数据网 (PDN )提供 链路接口, 保证用户在转移或漫游的过程中实现无间隙的服务。 归属位 置寄存器 (HLR )是一种用来存储本地用户位置信息的数据库。 在通信 网中, 通常设置若干个 HLR, 每个用户都必须在某个 HLR (相当于该用 户的原籍) 中登记。 登记的内容分为两类: 一种是永久性的参数, 如用 户号码、 移动设备号码、 接入的优先等级、 预定的业务类型以及保密参 数等; 另一种是暂时性的需要随时更新的参数, 即用户当前所处位置的 有关参数。
A接口标准定义了基站 (BS)和移动交换中心 (MSC)之间的所有功能 接口, 包括消息接口和规程, 以便不同设备供应商的基站和 MSC设备无 缝互连。 .
如图 2、 图 3所示, 是本发明的呼叫过程中的导通检验方法的流程示 意图。 本发明在原有的呼叫流程中, 通过在基站控制器和移动交换中心 间传递的消息中加入导通检验的指令, 实现基站控制器和移动交换中心 间的导通检验, 从而快速方便地定位通信连接中的错误(如鸳鸯线、 环 回等)。
以下以一个呼叫流程的实例来说明本发明, 在该实例中, 假设主叫 侧基站控制器 11和主叫侧移动交换中心 12为主叫侧, 而被叫侧移动交 换中心 13及被叫侧基站控制器 14为被叫侧, 并且主叫侧移动交换中心 12和被叫侧移动交换中心 13之间的信令为 ISUP(实际运用中 MSC之间 也可以用 SIP― T或者 BICC协议, 甚至是 H.323协议做局间信令)。
首先, 主叫侧基站控制器 11向主叫侧交换中心 12发送 CM业务请 求(CM SERV REQ ) 消息, 该 CM业务请求消息中包含有导通检验标志 该导通检验标志可以设置为 CM业务请求消息中的一个参数, 主叫侧移 动交换中心 12根据该导通检验标志生成请求导通检验指令, 以指示在呼 叫过程中进行导通检验, 随即主叫侧移动交换中心 12向主叫侧基站控制 器 11返回一个连接证实 ( CC ) 消息 (步骤 S31 )。
然后通信网络子系统进行地址解析(步驟 S32 ),该地址解析过程具 体包括以下步骤: 主叫侧移动交换中心 12向归属位置寄存器 16发送一 个定位请求(LOC REQ )消息; 随即归属位置寄存器 16向被叫侧移动交 换中心 13发送路由请求(ROUTE REQ ) 消息; 被叫侧移动交换中心 13 向归属位置寄存器 16返回路由请求反馈, 该返回的路由请求反馈包括被 叫方的临时本地号码;然后归属位置寄存器 16向主叫侧移动交换中心 12 返回定位请求消息, 将被叫方的位置通知主叫方。
在完成地址解析后, 主叫侧移动交换中心 12向被叫侧移动交换中心 13发送初始化地址消息 ( IAM )。
然后进行主叫侧的导通检验, 主叫侧移动交换中心 12将电路自环并 向所述主叫侧基站控制器 11发送指配请求( ASSIGNMENT REQ )消息, 该指配请求消息中包含有请求导通检验指令, 请求导通检验指令启动主 叫侧基站控制器 11进行导通检验 (步骤 S34 ), 并判断导通检验是否成功 (步驟 S36 )。
在本实施例中, 主叫侧的导通检验及判断具体包括以下步骤: 主叫 侧基站控制器 11向与其连接的去电路的去通路发出单音。 若导通检验未 通过, 即主叫侧基站控制器 11在与其连接的去电路的回通路上未收到上 述单音, 或该单音的传输质量和实现不符合预定的要求(可参考 Q.724 标准), 则主叫侧基站控制器 11向主叫侧移动交换中心 12发送清除请求 ( CLEAR REQ ) 消息, 拆除通信连接, 并使主叫侧移动交换中心 12取 消自环(步骤 S35 ); 若导通检验通过, 即主叫侧基站控制器 11在与其连 接的去电路的回通路上收到单音, 且该单音的传输质量和实现都符合预 定的要求(可参考 Q.724标准 ),则主叫侧基站控制器 11向主叫侧移动交 换中心 12返回指配完成( ASSIGNMENT CMP ) 消息, 该指配完成消息 包含有导通检验成功标志 (例如以消息中的参数形式存在) 以指示主叫 侧移动交换中心取消电路自环。
然后, 开始被叫侧的导通检验(步骤 S37 ), 并判断导通检验是否成 功 (步骤 S38 )。
在本实施例中, 被叫侧的导通检验及判断具体包括以下步骤: 被叫' 侧移动交换中心 13向被叫侧基站控制器 14发送寻呼(PAGING ) 消息, 随即被叫侧基站控制器 14向被叫侧移动交换中心 13返回寻呼响应, 该 寻呼响应消息中包含有导通检验标志 (该导通检验标志可以设置为寻呼 响应消息中的一个参数) 以指示进行导通检验, 而被叫侧移动交换中心 13则向被叫侧基站控制器 14返回一个连接证实 (CC ) 消息。 被叫侧移 动交换中心 13将电路自环之后,向被叫侧基站控制器 14发送一个指配请 求( ASSIGNMENT REQ )消息, 该指配请求消息中包含有请求导通检验 指令(例如以消息中的参数形式存在), 请求导通检验指令启动被叫侧基 站控制器 14进行导通检验, 该导通检险的过程与主叫侧的导通检验过程 类似。 若导通检验失败, 则被叫侧基站控制器 14向被叫侧移动交换中心 13发送清除请求(CLEAR REQ )消息, 拆除通信连接, 并使被叫侧移动 交换中心 13取消自环(步骤 S39 ); 若导通检验成功, 则被叫侧基站控制 器 14向被叫侧移动交换中心 13返回指配完成( ASSIGNMENT CMP )消 息, 该指配完成消息包含有导通检验成功标志 (例如以消息中的参数形 式存在) 以指示被叫侧移动交换中心 13取消电路自环。
若被叫侧导通检验成功, 系统建立通话连接, 具体过程为: 被叫侧 移动交换中心 13向主叫侧移动交换中心 12返回一个地址全消息( ACM ); 被叫侧基站控制器 14向被叫侧移动交换中心 13发送连接消息; 最后被 叫侧移动交换中心 13 向主叫侧移动交换中心 12发送应答消息 (步骤 S40 )。
这样, 就完成了一个主叫侧基站控制器 11 到被叫侧基站控制器 14 的呼叫, 同时, 在呼叫过程中也完成了基站控制器与移动交换中心的导 通检验。 需指出的是, 上述主叫侧与被叫侧的导通检验相互独立, 可在 一个系统中单独使用其中任一侧的导通检验。
本发明不改变 A接口呼叫的流程, 通过扩展 A接口协议中的 CM业 务请求消息、 指配请求消息、 寻呼消息 (或寻呼响应消息)、 指配完成消 息内容, 实现了 A接口呼叫过程中的导通检验。
以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围 并不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范 围内, 可轻易想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应该以权利要求的保护范围为准。

Claims

权 利 要 求
1、 一种基站控制器与移动交换中心呼叫过程中的导通检验方法, 其 特征在于, 包括以下步骤:
( a )移动交换中心将电路自环并向基站控制器发送导通检验指令; ( b )所述基站控制器根据所述导通检验指令进行导通检验, 若导通 检验成功, 向所述移动交换中心发送导通检 ¾r成功标志, 指示移动交换 中心取消电路自环; 若导通检验失败, 所述基站控制器向移动交换中心 发送清除请求消息, 指示所述移动交换中心拆除通信连接及取消电路自 环。
2、 根据权利要求 1所述的基站控制器与移动交换中心呼叫过程中的 导通检验方法, 其特征在于, 所述步驟(a ) 中, 通过由移动交换中心向 基站控制器发送的指配请求消息实现导通检验指令的发送, 所述指配请 求消息中包含有导通检验指令。
3、 根据权利要求 1所述的基站控制器与移动交换中心呼叫过程中的 导通检验方法, 其特征在于, 所述步驟(b ) 中, 通过由所述基站控制器 向移动交换中心发送的指配完成消息实现导通检验成功标志的发送, 所 述指配完成消息包含有导通检验成功标志。
4、 根据权利要求 1所述的基站控制器与移动交换中心呼叫过程中的 导通检验方法, 其特征在于, 还包括基站控制器向移动交换中心发送带 导通检验标志的请求消息, 指示移动交换中心进行导通检验。
5、 根据权利要求 4所述的基站控制器与移动交换中心呼叫过程中的 导通检验方法, 其特征在于, 所述基站控制器为主叫侧的基站控制器, 所述移动交换中心为主叫侧的移动交换中心, 所述带导通检验标志的请 求消息为 CM业务请求消息。
6、 根据权利要求 4所述的基站控制器与移动交换中心呼叫过程中的 导通检验方法, 其特征在于, 所述基站控制器为被叫侧的基站控制器, 所述移动交换中心为被叫侧的移动交换中心, 所述带导通检 ¾r标志的请 求消息为寻呼响应消息。
7、 根据权利要求 1至 6任一项所述的基站控制器与移动交换中心呼 叫过程中的导通检验方法, 其特征在于, 按照下述步骤进行导通检验:
( al )基站控制器向与其连接的去电路的去通路发出单音,若基站控 制器在与其连接的去电路的回通路上收到所述单音, 且所述单音的传输 质量和实现符合预定的要求, 则导通检验成功; 若基站控制器在与其连 接的去电路的回通路上未收到所述单音, 或收到单音的传输质量和实现 不符合预定的要求, 则导通检验失败。
8、 一种基站控制器与移动交换中心呼叫过程中的导通检验方法, 其 特征在于, 包括以下步驟:
( a )主叫侧移动交换中心将电路自环后向主叫侧基站控制器发送请 求导通检验指令;
( b )所述主叫侧基站控制器根据所述导通检验指令进行导通检验, 若主叫侧导通检验成功, 所述主叫侧基站控制器向所述主叫侧移动交换 中心发送导通检验成功标志, 指示所述主叫侧移动交换中心取消电路自 环, 并执行被叫侧的导通检验; 若主叫侧导通检验失败, 所述主叫侧基 站控制器向主叫侧移动交换中心发送清除请求消息, 指示所述主叫侧移 动交换中心拆除通信连接及取消电路自环。
9、 根据权利要求 8所述的基站控制器与移动交换中心呼叫过程中的 导通检验方法, 其特征在于, 按照下述步骤进行被叫侧的导通检验:
( bl )被叫侧移动交换中心将电路自环后向所述被叫侧基站控制器 发送请求导通检验指令;
( b2 )所述被叫侧基站控制器根据所述导通检验指令进行导通检验, 若被叫侧导通检验成功, 所述被叫侧基站控制器向所述被叫侧移动交换 中心发送导通检验成功标志, 指示被叫侧移动交换中心取消电路自环; 若导通检验失败, 所述被叫侧基站控制器向被叫侧移动交换中心发送清 除请求消息 , 指示所述被叫侧移动交换中心拆除通信连接及取消被叫侧 移动交换中心的电路自环。
10、 根据权利要求 8 所述的基站控制器与移动交换中心呼叫过程中 的导通检验方法, 其特征在于, 在主叫侧移动交换中心自环之前, 还包 括主叫侧基站控制器向主叫侧移动交换中心发送 CM业务请求消息的步 骤, 其中所述 CM业务请求消息包含有导通检验标志。
11、 根据权利要求 9 所述的基站控制器与移动交换中心呼叫过程中 的导通检验方法, 其特征在于, 在被叫侧移动交换中心自环之前, 还包 括被叫侧基站控制器向被叫侧移动交换中心发送寻呼响应消息的步骤, 所述寻呼响应消息包含有导通检验标志。
12、 根据权利要求 8至 11任一项所述的基站控制器与移动交换中心 呼叫过程中的导通检验方法, 其特征在于, 按照下述步骤进行导通检验: 基站控制器向与其连接的去电路的去通路发出单音, 若基站控制器在与 其连接的去电路的回通路上收到所述单音, 且所述单音的传输质量和实 现符合预定的要求, 则导通检验成功; 若基站控制器在与其连接的去电 路的回通路上未收到所述单音, 或收到单音的传输质量和实现不符合预 定的要求, 则导通检验失败。
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EP1860908B1 (en) 2009-10-14
US7974594B2 (en) 2011-07-05
US20100255789A1 (en) 2010-10-07
ATE445977T1 (de) 2009-10-15
DE602006009777D1 (de) 2009-11-26
CN101161021A (zh) 2008-04-09
EP1860908A1 (en) 2007-11-28
EP1860908A4 (en) 2008-03-26
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