WO2008037208A1 - Procédé et système pour gestion d'un circuit d'interface a et passerelle media - Google Patents

Procédé et système pour gestion d'un circuit d'interface a et passerelle media Download PDF

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Publication number
WO2008037208A1
WO2008037208A1 PCT/CN2007/070625 CN2007070625W WO2008037208A1 WO 2008037208 A1 WO2008037208 A1 WO 2008037208A1 CN 2007070625 W CN2007070625 W CN 2007070625W WO 2008037208 A1 WO2008037208 A1 WO 2008037208A1
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WIPO (PCT)
Prior art keywords
interface circuit
circuit
mgw
msc server
information
Prior art date
Application number
PCT/CN2007/070625
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English (en)
French (fr)
Inventor
Hao Zhang
Runsheng Han
Yong Wang
Hualin Luo
Youjun Chen
Sihai Ye
Xiaochun Cui
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 EP07801034A priority Critical patent/EP2075950B1/en
Priority to PL07801034T priority patent/PL2075950T3/pl
Priority to DE602007014086T priority patent/DE602007014086D1/de
Priority to AT07801034T priority patent/ATE506833T1/de
Publication of WO2008037208A1 publication Critical patent/WO2008037208A1/zh

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Classifications

    • 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 mobile communication technologies, and in particular, to an A interface circuit management method, system and media gateway in a mobile communication network with separate bearer and control. Background of the invention
  • the Mobile Switch Center In the mobile communication network with separate bearer and control, the Mobile Switch Center (MSC) is divided into two parts: a mobile switching center server (MSC Server) and a media gateway (MGW, Media Gateway).
  • MSC Server Mobile switching center server
  • MGW Media Gateway
  • Figure 1 shows the schematic diagram of the allocation and release process of the A interface circuit during the call, which mainly includes the following steps:
  • Step 101 The user equipment (UE, User Equipment) initiates a call or receives a call.
  • CIC circuit identification code
  • TID Termination Identifier
  • Step 103 The MSC Server requests the MGW to reserve the A interface circuit allocated by the MSC Server for the UE by using an ADD.request message, where the ADD.request message carries the TID corresponding to the A interface circuit allocated by the MSC Server for the UE. .
  • Step 104 After receiving the ADD.request message, the MGW performs circuit reservation according to the TID carried in the message and the corresponding relationship between the A interface circuit and the TID configured by itself, and returns an endpoint to the MSC Server to increase the response (ADD.reply).
  • Step 105 After the request for the reservation circuit is successful, the MSC Server sends an ASSIGNMENT REQUEST message to the base station controller (BSC) to request the access side bearer assignment, where the assignment request message carries the MSC Server.
  • BSC base station controller
  • Step 106 After receiving the ASSIGNMENT REQUEST message, the BSC performs bearer assignment and returns the assignment completion (ASSIGNMENT COMPLETE) to the MSC Server.
  • Step 107 Continue call processing or call.
  • Step 108 During the call release process of the UE, the MSC Server sends a CLEAR COMMAND message to the BSC.
  • Step 109 After receiving the CLEAR COMMAND message, the BSC releases the radio resource (RR, Radio Resource) connection and returns a CLEAR COMPLETE message to the MSC Server.
  • RR Radio Resource
  • Step 110 The MSC Server sets the A interface circuit occupied by the UE to an idle state.
  • SUB.request Endpoint Delete Request
  • Step 112 After receiving the SUB.request message, the MGW releases the A interface circuit corresponding to the TID carried in the message, that is, the A interface circuit occupied by the UE, and returns an endpoint deletion response (SUB.reply) message to the MSC Server.
  • the MGW releases the A interface circuit corresponding to the TID carried in the message, that is, the A interface circuit occupied by the UE, and returns an endpoint deletion response (SUB.reply) message to the MSC Server.
  • each MSC Server in the MSC Pool is respectively connected to each virtual media gateway (VMGW, Virtual Media GateWay) in the same MGW, and one MGW.
  • VMGW virtual media gateway
  • Any specified A interface circuit between the BSCs connected to it can only belong to one MSC Server and cannot be MSC.
  • Server sharing the multiplexing rate of the A interface circuit is low; and when the MSC Server is added to the MSC Pool, the A interface circuit resources need to be added through the data configuration, or some A interface circuit resources are transferred from other MSC Servers. Add MSC Server, which will increase the complexity of A interface circuit operation and maintenance. Summary of the invention
  • the invention provides an A interface circuit management method, system and media gateway, which reduces the complexity of A interface circuit management.
  • the A interface circuit management method provided by the present invention is as follows:
  • the MGW After receiving the circuit resource allocation request for the UE to allocate the A interface circuit, the MGW obtains the circuit selection reference information carried in the request; the circuit resource allocation request is sent by the MSC Server to the MGW;
  • the MGW allocates reference information to the UE according to the circuit selection reference information carried in the request, and allocates an A interface circuit to the UE in the A interface circuit resource configured by the local office; and information about the A interface circuit corresponding to the A interface circuit to be allocated to the UE, Send to the MSC Server.
  • the present invention further provides an A-interface circuit management system, where the system includes: an MGW and an MSC Server, where
  • the MSC Server is configured to send, to the MGW, a circuit resource allocation request for requesting the UE to allocate an A interface circuit;
  • the MGW is configured to receive the circuit resource allocation request sent by the MSC server, obtain the circuit selection reference information carried in the request, and allocate the reference information according to the circuit, and allocate the reference information to the UE in the A interface circuit resource configured in the local office.
  • the A interface circuit sends the information of the A interface circuit corresponding to the A interface circuit allocated to the UE to the MSC Server.
  • the present invention also provides an MGW, the MGW comprising: a transceiver unit and a distribution unit, among them,
  • the transceiver unit is configured to receive a request sent by the mobile switching center server MSC Server to allocate a circuit resource allocation request of the A interface circuit to the user equipment UE, and send the received circuit resource allocation request to the allocation unit;
  • An allocating unit configured to receive the circuit resource allocation request from the transceiver unit, obtain circuit selection reference information carried in the request, and select a reference information according to the circuit in the request, and be a UE in the A interface circuit resource configured in the local office. Allocating an A interface circuit;
  • the transceiver unit is configured to send information about the A interface circuit corresponding to the A interface circuit allocated to the UE to the MSC Server.
  • the A interface circuit management function is moved from the MSC Server to the MGW, and the MGW completes the A interface circuit management, which reduces the complexity of the A interface circuit management; and, the MSC Pool separated from the bearer and the control.
  • the foregoing technical solution provided by the present invention can share the resources of the A interface circuit, improve the multiplexing rate of the A interface circuit, and reduce the complexity of the operation and maintenance of the A interface circuit.
  • FIG. 1 is a schematic diagram of a process of allocating and releasing an A interface circuit in the prior art
  • FIG. 2 is a schematic diagram of a process of allocating and releasing an A interface circuit according to the present invention
  • FIG. 3 is a schematic structural diagram of an A interface circuit management system in the present invention.
  • FIG. 4 is a schematic structural diagram of a media gateway in the present invention. Mode for carrying out the invention
  • the invention mainly moves the A interface circuit management function from the MSC Server to the MGW, and the MGW completes the A interface circuit management.
  • the following is a detailed description of the A-interface circuit management in the present invention.
  • the present embodiment mainly includes the following steps: Step 201: The UE initiates a call or receives a call.
  • Step 202 The MSC Server sends a circuit resource allocation request to the MGW when the UE initiates a call or receives a call, and requests the MGW to allocate an A interface circuit to the UE, where the circuit resource allocation request carries circuit selection reference information.
  • the circuit selection reference information may include end office information, such as office direction (OFC, Office Code), or network identifier (NI), force, source signaling point code (OPC, Originating signaling Point Code), force port, destination letter DPC (Destination Signaling Point Code), OFC refers to the office direction of the MSC Server to the BSC, OPC refers to the signaling point code of the MSC Server, and DPC refers to the signaling point code of the BSC.
  • the MSC Server may further include a general land mobile network (PLMN, Pulic Land Mobile Network) bearer capability (BC), a codec list, and the like, for the MGW to allocate A.
  • PLMN Pulic Land Mobile Network
  • BC Pulic Land Mobile Network
  • the MSC Server can send circuit selection reference information such as OFC (or NI, OPC and DPC), PLMN BC and Codec List to the MGW through the h.248 message of the Mc interface, such as the ADD.request message, or through other messages.
  • the circuit selection reference information is sent to the MGW.
  • Step 203 After receiving the circuit resource allocation request sent by the MSC Server, the MGW allocates an A interface circuit to the UE in the idle A interface circuit of the A interface circuit resource configured in the local office according to the circuit selection reference information carried in the local device, and The A interface circuit is placed in a busy state, and the CIC and TID corresponding to the A interface circuit can be obtained according to the correspondence between the preconfigured A interface circuit and the CIC and the TID.
  • Step 204 After the MGW allocates the A interface circuit successfully, the information of the A interface circuit allocated to the UE may be returned to the MSC Server, and the information of the A interface circuit may include the CIC, TID can also include Codec List and the like.
  • the MGW may send the information of the A interface circuit to the MSC Server through ADD.reply, or send the information of the A interface circuit to the MSC Server through other messages.
  • Step 206 After receiving the ASSIGNMENT REQUEST message, the BSC performs bearer assignment and returns an assignment to the MSC Server to complete the ASSIGNMENT COMPLETE message.
  • Step 207 The MSC Server continues to perform call or call processing of the UE.
  • Step 208 During the call release process of the UE, the MSC Server sends a CLEAR COMMAND message to the BSC.
  • Step 209 After receiving the CLEAR COMMAND message, the BSC releases the RR connection and returns a CLEAR COMPLETE message to the MSC Server.
  • Step 210 The MSC Server sends a circuit resource release request to the MGW, where the request may carry information (such as CIC, TID, etc.) of the A interface circuit that needs to be released.
  • the request may carry information (such as CIC, TID, etc.) of the A interface circuit that needs to be released.
  • the MSC Server can send the information of the A interface circuit that needs to be released to the MGW through the h.248 message SUB.request of the Mc interface, or send the information of the A interface circuit that needs to be released to the MGW through the newly set message.
  • the A interface circuit to be released may be the A interface circuit assigned to the UE.
  • Step 211 After receiving the circuit resource release request sent by the MSC Server, the MGW releases the A interface circuit corresponding to the information of the A interface circuit carried in the request, such as the A interface circuit occupied by the UE, and the A interface The circuit is placed in an idle state.
  • the MGW determines the TID carried in the request by referring to the correspondence between the A interface circuit configured by itself and the CIC and the TID. Corresponding A interface circuit, and release.
  • Step 212 After the resource release is completed, the MGW returns a circuit resource release response to the MSC Server, and the interface SUB.reply.
  • the MSC Server in the MSC Pool uses the same signaling point to connect to the same BSC through the MGW. After receiving the message from the BSC, the MGW receives the message from the BSC.
  • the destination MSC Server that sends the message to the same signaling point is determined according to the user parameter carried in the message, and the received message is sent to the destination MSC Server, that is, the MGW is responsible for distributing the message from the BSC.
  • each MSC Server in the MSC Pool can share the A interface circuit resources of the same BSC, improve the multiplexing rate of the A interface circuit, and reduce the complexity of the operation and maintenance of the A interface circuit.
  • Figure 2 mainly illustrates the A-interface circuit management of the MGW during the call.
  • the MGW also needs to complete the maintenance operation of the A-interface circuit.
  • the operation management system 0 or M initiates blocking of the A interface circuit.
  • the processing of operations such as (BLOCK), unblocking (UNBLOCK), and reset (RESET), processing of BLOCK, UNBLOCK, and RESET by the BSC for the A interface circuit.
  • the embodiment of the present invention further provides an A-interface circuit management system.
  • the system mainly includes: an MGW and an MSC Server, and performs an A-interface circuit.
  • the MSC Server is configured to send a circuit resource allocation request to the MGW and to receive the A interface circuit information from the MGW.
  • the MGW is configured to receive the circuit resource allocation request sent by the MSC Server, in the A interface circuit resource configured in the local office. Perform the assignment of the A interface circuit and assign the assigned A interface Circuit information is sent to the MSC Server.
  • the MSC Server When performing the release of the A interface circuit, the MSC Server is configured to send a circuit resource release request to the MGW; the MGW is configured to receive the circuit resource release request sent by the MSC Server, and perform the A interface according to the A interface circuit information that needs to be released. The release of the circuit.
  • the MGW is further configured to place the allocated A interface circuit to be busy when the A interface circuit is allocated; and to release the released A interface circuit to the idle state when the A interface circuit is released.
  • the MGW is further operable to send information of the A interface circuit assigned to the UE to the MSC Server; the MSC Server is further operable to receive information of the A interface circuit assigned to the UE.
  • the MGW may include: a transceiver unit, an allocating unit, and a releasing unit, where the transceiver unit is configured to receive a circuit resource allocation request sent by the MSC Server, send the received circuit resource allocation request to the allocating unit, and use Receiving the A interface circuit message from the distribution unit, and transmitting the received A interface circuit information to the MSC Server; the allocation unit is configured to receive the circuit resource allocation request from the transceiver unit, and perform A in the A interface circuit resource configured in the local office.
  • the allocation of the interface circuit may be based on the circuit selection reference information carried in the request, and allocate an A interface circuit to the UE in the A interface circuit resource configured in the local office; and send the allocated A interface circuit information to the transceiver unit.
  • the allocation unit can further be used to place the assigned A interface circuit in a busy state.
  • the transceiver unit is configured to send information about the A interface circuit corresponding to the A interface circuit allocated to the UE to the MSC Server.
  • the transceiver unit is further configured to receive a circuit resource release request sent by the MSC Server, and send the received circuit resource release request to the release unit; the release unit is configured to receive the circuit resource release request from the transceiver unit, and carry the The A interface circuit information that needs to be released is released by the A interface circuit.
  • the release unit can further be used to place the released A interface circuit in an idle state.
  • An embodiment of the present invention further provides an MGW, and the specific structure thereof is the same as shown in FIG. 4, where No longer.

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

一种 A接口电路管理方法、 ***及媒体网关
技术领域
本发明涉及移动通信技术, 尤其涉及承载与控制分离的移动通信网 络中的 A接口电路管理方法、 ***及媒体网关。 发明背景
在承载与控制分离的移动通信网络中,移动交换中心(MSC, Mobile Switch Center )被分成移动交换中心服务器( MSC Server )和媒体网关 ( MGW, Media Gateway ) 两部分, 在该网络中, A接口电路管理主要 由 MSC Server完成。
图 1所示为呼叫过程中 A接口电路的分配和释放过程示意图, 主要 包括以下步骤:
步骤 101: 用户设备(UE, User Equipment )发起呼叫或接收呼叫。 步骤 102: MSC Server通过 A接口电路管理功能, 在本局配置的 A 接口电路资源的空闲 A接口电路中为该 UE分配一条 A接口电路,并将 该 A接口电路置为忙态, 同时,根据自身配置的 A接口电路与电路标识 码 (CIC , Circuit Identification Code ), 端点标识 (TID , Termination Identifier ) 的对应关系, 获取该 A接口电路对应的 CIC和 TID。
步骤 103: MSC Server通过端点增加请求(ADD.request )消息请求 MGW保留 MSC Server为该 UE分配的 A接口电路, 该 ADD.request消 息中携带 MSC Server为该 UE分配的 A接口电路所对应的 TID。
步骤 104: MGW收到 ADD.request消息后, 根据该消息中携带的 TID、 以及自身配置的 A接口电路与 TID的对应关系, 进行电路保留, 并向 MSC Server返回端点增加响应 ( ADD.reply ) 消息。 步骤 105: 请求保留电路成功后, MSC Server向基站控制器(Base Station Control, BSC )发送指配请求( ASSIGNMENT REQUEST )消息, 请求接入侧承载指配,该指配请求消息中携带 MSC Server为该 UE分配 的 A接口电路所对应的 CIC。
步骤 106: BSC收到 ASSIGNMENT REQUEST消息后, 进行承载 指配, 并向 MSC Server返回指配完成( ASSIGNMENT COMPLETE )消 步骤 107: 继续呼叫处理或通话。
步骤 108: 在该 UE的呼叫释放处理过程中, MSC Server向 BSC发 送清除命令 ( CLEAR COMMAND ) 消息。
步骤 109: BSC收到 CLEAR COMMAND消息后, 释放无线资源 ( RR, Radio Resource )连接, 并向 MSC Server返回清除完成( CLEAR COMPLETE ) 消息。
步骤 110: MSC Server将该 UE占用的 A接口电路置为空闲态。 步骤 111 : MSC Server向 MGW发送端点删除请求( SUB.request ) 消息,该 SUB.request消息中携带该 UE占用的 A接口电路所对应的 TID。
步骤 112: MGW收到 SUB.request消息后,释放该消息中携带的 TID 所对应的 A接口电路即该 UE所占用的 A接口电路, 并向 MSC Server 返回端点删除响应 (SUB.reply ) 消息。
可见, 现有的 A接口电路管理主要由 MSC Server完成, 由于移动 通信网络中 MSC Server数量众多, 因此管理起来较为复杂。 并且, 通 常在承载与控制分离的 MSC 池(MSC Pool )组网结构中, MSC Pool 中的各 MSC Server分别与同一个 MGW中的各虚拟媒体网关( VMGW, Virtual Media GateWay )连接, 而一 MGW与其连接的 BSC之间的任意 一条指定的 A接口电路只能够归属到一个 MSC Server,不能够被各 MSC Server共享, A接口电路的复用率较低;而且, 当 MSC Pool中新增 MSC Server时,则需要通过数据配置新增 A接口电路资源、或者由其它 MSC Server中转移一部分 A接口电路资源给新增 MSC Server, 这将增加 A 接口电路运维的复杂度。 发明内容
本发明提供一种 A接口电路管理方法、 ***及媒体网关, 降低 A接 口电路管理的复杂度。
本发明提供的 A接口电路管理方法如下:
MGW接收到请求为 UE分配 A接口电路的电路资源分配请求后, 获取该请求中携带的电路选择参考信息;所述电路资源分配请求由 MSC Server发送给所述 MGW;
所述 MGW根据该请求中携带的电路选择参考信息, 在本局配置的 A接口电路资源中为 UE分配 A接口电路; 将被分配给 UE的所述 A接 口电路所对应的 A接口电路的信息, 发送给 MSC Server。
对应本发明提供的 A接口电路管理方法,本发明还提供一种 A接口 电路管理***, 该***包括: MGW和 MSC Server, 其中,
MSC Server用于向 MGW发送请求为 UE分配 A接口电路的电路资 源分配请求;
MGW用于接收 MSC Server发送来的所述电路资源分配请求,获取 该请求中携带的电路选择参考信息, 根据该请求中携带的电路选择参考 信息, 在本局配置的 A接口电路资源中为 UE分配 A接口电路, 将被分 配给 UE的所述 A接口电路所对应的 A接口电路的信息, 发送给 MSC Server„
本发明还提供一种 MGW, 该 MGW包括: 收发单元和分配单元, 其中,
收发单元用于接收移动交换中心服务器 MSC Server发送来的请求 为用户设备 UE分配 A接口电路的电路资源分配请求, 将收到的电路资 源分配请求发送给分配单元;
分配单元, 用于接收来自收发单元的所述电路资源分配请求, 获取 该请求中携带的电路选择参考信息, 根据该请求中携带的电路选择参考 信息, 在本局配置的 A接口电路资源中为 UE分配 A接口电路;
所述收发单元, 用于将被分配给 UE的所述 A接口电路所对应的 A 接口电路的信息发送给 MSC Server。
由此可见, 本发明中, 将 A接口电路管理功能由 MSC Server下移 到 MGW, 由 MGW完成 A接口电路管理, 降低了 A接口电路管理的复 杂度; 并且, 在承载与控制分离的 MSC Pool组网结构中, 本发明提供 的上述技术方案能够实现 A接口电路资源的共享,提高 A接口电路的复 用率, 降低 A接口电路运维的复杂度。 附图简要说明
图 1为现有技术中 A接口电路的分配和释放过程示意图;
图 2为本发明中 A接口电路的分配和释放过程示意图;
图 3为本发明中的 A接口电路管理***结构示意图;
图 4为本发明中的媒体网关结构示意图。 实施本发明的方式
下面参照附图并举实施例,对本发明的技术方案作进一步详细说明。 本发明主要是将 A接口电路管理功能由 MSC Server下移到 MGW, 由 MGW完成 A接口电路管理。 下面以呼叫过程中 A接口电路的分配和释放为例,对本发明中 A接 口电路管理进行详细说明,参见图 2所示,本实施例主要包括以下步骤: 步骤 201: UE发起呼叫或接收呼叫。
步骤 202: MSC Server在 UE发起呼叫或接收呼叫时, 向 MGW发 送电路资源分配请求, 请求 MGW为该 UE分配 A接口电路, 该电路资 源分配请求中携带电路选择参考信息。
其中, 电路选择参考信息可包括端局信息, 如局向 (OFC, Office Code )、或者网络标识( NI ),力 ,源信令点码 ( OPC, Originating signaling Point Code ),力口, 目的信令点码 ( DPC, Destination signaling Point Code ), OFC指 MSC Server到 BSC的局向, OPC指 MSC Server的信令点码, DPC指 BSC的信令点码。 在电路资源分配请求中, MSC Server还可进 一步包括通用陆地移动网络( PLMN, Pulic Land Mobile Network )承载 能力 ( BC, Bearer Capability ), 编解码列表( Codec List )等信息, 以供 MGW在分配 A接口电路时参考使用。
MSC Server可以通过 Mc接口的 h.248消息, 如 ADD .request消息 将电路选择参考信息,如 OFC(或 NI、 OPC与 DPC )、 PLMN BC和 Codec List发送给 MGW, 也可以通过其他的消息将电路选择参考信息发送给 MGW。
步骤 203: MGW收到 MSC Server发送来的电路资源分配请求后, 根据其中携带的电路选择参考信息,在本局配置的 A接口电路资源的空 闲 A接口电路中为该 UE分配一条 A接口电路, 并将该 A接口电路置 为忙态, 且, 根据预先配置的 A接口电路与 CIC、 TID的对应关系, 可 获取该 A接口电路对应的 CIC和 TID。
步骤 204: MGW分配 A接口电路成功后, 可将被分配给 UE的 A 接口电路的信息返回给 MSC Server, 该 A接口电路的信息可包括 CIC、 TID , 还可以包括 Codec List等。
MGW可以通过 ADD.reply将该 A接口电路的信息发送给 MSC Server,也可以通过其他消息将该 A接口电路的信息发送给 MSC Server^ 步骤 205: MSC Server收到 MGW发送来的关于该 A接口电路的信 息后, 保留该 A 接口电路的信息, 并向 BSC 发送 ASSIGNMENT REQUEST消息, 请求接入侧承载指配, 该指配请求中携带 MGW为该 UE分配的 A接口电路所对应的 CIC。
步骤 206: BSC收到 ASSIGNMENT REQUEST消息后, 进行承载 指配,并向 MSC Server返回指配完成 ASSIGNMENT COMPLETE消息。
步骤 207: MSC Server继续进行 UE的呼叫或通话处理。
步骤 208: 在该 UE的呼叫释放处理过程中, MSC Server向 BSC发 送 CLEAR COMMAND消息。
步骤 209: BSC收到 CLEAR COMMAND消息后, 释放 RR连接, 并向 MSC Server返回 CLEAR COMPLETE消息。
步骤 210: MSC Server向 MGW发送电路资源释放请求, 该请求中 可携带需要释放的 A接口电路的信息(如 CIC、 TID等)。
MSC Server可以通过 Mc接口的 h.248消息 SUB .request将需要释放 的 A接口电路的信息发送给 MGW, 也可以通过新设置的消息将需要释 放的 A接口电路的信息发送给 MGW。该需要释放的 A接口电路可以是 上述被分配给 UE的 A接口电路。
步骤 211: MGW收到 MSC Server发送来的电路资源释放请求后, 释放该请求中携带的 A接口电路的信息所对应的 A接口电路, 如该 UE 所占用的 A接口电路, 并将该 A接口电路置为空闲态。
比如, 当电路资源释放请求中携带 TID时, MGW通过查阅自身配 置的 A接口电路与 CIC、 TID的对应关系, 确定该请求中携带的 TID所 对应的 A接口电路, 并进行释放。
步骤 212: 资源释放完毕后, MGW向 MSC Server返回电路资源释 响应, ^口 SUB .reply。
另外, 还存在某些特定的承载与控制分离的 MSC Pool组网结构, 比如, MSC Pool中的 MSC Server采用相同的信令点通过 MGW与同一 个 BSC连接, MGW收到来自 BSC的消息后, 根据消息中携带的用户 参数确定发送往同一个信令点的消息的目的 MSC Server,并将收到的消 息发送给目的 MSC Server, 也就是说, 由 MGW负责分发从 BSC上来 的消息。
在这种特定的承载与控制分离的 MSC Pool组网结构中, 如果采用 本发明实施例提供的 A接口电路管理方法, 则 MGW与其连接的 BSC 之间的任意一条 A接口电路无需归属到一个 MSC Server, MSC Pool内 的各个 MSC Server可以共享同一个 BSC的 A接口电路资源,提高 A接 口电路的复用率, 降低 A接口电路运维的复杂度。
图 2主要阐述了 MGW在呼叫过程中的 A接口电路管理,在实际应 用中, MGW还要完成对 A接口电路的维护类操作的处理, 比如, 操作 管理*** 0&M 发起的对 A 接口电路的阻塞 ( BLOCK )、 疏通 ( UNBLOCK )及复位(RESET )等操作的处理, BSC发起的对 A接口 电路的 BLOCK、 UNBLOCK及 RESET等操作的处理等。
对应本发明实施例所提供的 A接口电路管理方法, 本发明实施例还 提供了一种 A接口电路管理***, 参见图 3所示, 该***主要包括: MGW和 MSC Server, 在进行 A接口电路的分配时, MSC Server用于 向 MGW发送电路资源分配请求,并用于接收来自 MGW的 A接口电路 信息; MGW用于接收 MSC Server发送来的电路资源分配请求, 在本局 配置的 A接口电路资源中进行 A接口电路的分配, 并将分配的 A接口 电路信息发送给 MSC Server。
在进行 A接口电路的释放时, MSC Server用于向 MGW发送电路资 源释放请求; MGW用于接收 MSC Server发送来的电路资源释放请求, 并根据其中携带的需要释放的 A接口电路信息进行 A接口电路的释放。
另外, MGW还进一步用于在分配 A接口电路时将分配的 A接口电 路置为忙态; 在释放 A接口电路时将释放的 A接口电路置为空闲态。
另外, MGW进一步可用于将被分配给 UE的 A接口电路的信息发 送给 MSC Server; MSC Server进一步可用于接收所被分配给 UE的 A 接口电路的信息。
参见图 4所示, MGW可包括: 收发单元、 分配单元和释放单元, 其中, 收发单元用于接收 MSC Server发送来的电路资源分配请求, 将 收到的电路资源分配请求发送给分配单元, 并用于接收来自分配单元的 A接口电路消息,将收到的 A接口电路信息发送给 MSC Server;分配单 元, 用于接收来自收发单元的电路资源分配请求, 在本局配置的 A接口 电路资源中进行 A接口电路的分配,该分配可以是根据该请求中携带的 电路选择参考信息,在本局配置的 A接口电路资源中为 UE分配 A接口 电路; 并将分配的 A接口电路信息发送给收发单元。 分配单元还可进一 步用于将分配的 A接口电路置为忙态。 所述收发单元, 用于将被分配给 UE的所述 A接口电路所对应的 A接口电路的信息发送给 MSC Server。
收发单元还可进一步用于接收 MSC Server发送来的电路资源释放 请求, 并将收到的电路资源释放请求发送给释放单元; 释放单元用于接 收来自收发单元的电路资源释放请求, 并根据其中携带的需要释放的 A 接口电路信息进行 A接口电路的释放。释放单元还可进一步用于将释放 的 A接口电路置为空闲态。
本发明实施例还提供了一种 MGW, 其具体结构如图 4一致, 这里 不再赘述。
以上所述对本发明的目的、 技术方案和有益效果进行了进一步的详 细说明, 所应理解的是, 以上所述并不用以限制本发明, 凡在本发明的 精神和原则之内, 所做的任何修改、 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 A接口电路管理方法, 其特征在于, 该方法包括: 媒体网关 MGW接收到请求为用户设备 UE分配 A接口电路的电路 资源分配请求后, 获取该请求中携带的电路选择参考信息; 所述电路资 源分配请求由移动交换中心服务器 MSC Server发送给所述 MGW;
所述 MGW根据该请求中携带的电路选择参考信息, 在本局配置的 A接口电路资源中为 UE分配 A接口电路; 将被分配给 UE的所述 A接 口电路所对应的 A接口电路的信息, 发送给 MSC Server。
2、 根据权利要求 1所述的方法, 其特征在于,
所述电路选择参考信息包括: 网络标识 NI和源信令点码 OPC和目 的信令点码 DPC; 或,
所述电路选择参考信息包括: 局向 OFC。
3、根据权利要求 2所述的方法, 其特征在于, 所述电路选择参考信 息进一步包括: 通用陆地移动网络 PLMN承载能力 BC、 编解码列表 Codec Listo
4、 根据权利要求 1、 2或 3所述的方法, 其特征在于, 所述电路选 择参考信息由所述 MSC Server通过 Mc接口的 h.248消息发送给 MGW。
5、 根据权利要求 1所述的方法, 其特征在于, 为 UE分配 A接口 电路的步骤包括:
在本局配置的 A接口电路资源的空闲 A接口电路中为该 UE分配一 条 A接口电路。
6、 根据权利要求 5所述的方法, 其特征在于, 为 UE分配 A接口 电路后, 该方法进一步包括: MGW将被分配给 UE的 A接口电路置为 忙态。
7、 根据权利要求 1所述的方法, 其特征在于, 所述将被分配给 UE 的所述 A接口电路所对应的 A接口电路的信息, 发送给 MSC Server的 步骤包括:
根据预先配置的 A接口电路与 A接口电路的信息的对应关系,获取 被分配给 UE的所述 A接口电路所对应的 A接口电路的信息,并将获取 的 A接口电路的信息发送给 MSC Server;
所述 A接口电路的信息包括至少其中之一: 电路标识码 CIC、 端点 标识 TID。
8、 根据权利要求 7所述的方法, 其特征在于, 将所述被分配给 UE 的 A接口电路的信息发送给 MSC Server的步骤包括: MGW通过端点 增加响应将该信息发送给 MSC Server。
9、 根据权利要求 7所述的方法, 其特征在于, 将被分配给 UE的 A 接口电路的信息发送给 MSC Server后, 该方法进一步包括:
MGW接收 MSC Server发送来的请求释放被分配给 UE的 A接口电 路的电路资源释放请求,根据其中携带的需要释放的 A接口电路的信息 进行 A接口电路的释放。
10、 根据权利要求 9所述的方法, 其特征在于, 所述需要释放的 A 接口电路的信息包括 CIC或 TID;
所述进行 A接口电路的释放包括: MGW根据所述 CIC或 TID、 以 及预先配置的 A接口电路与 CIC、 TID的对应关系确定所要释放的 A接 口电路, 并释放该 A接口电路。
11、 根据权利要求 9所述的方法, 其特征在于, 所述需要释放的 A 接口电路的信息由 MSC Server通过 Mc接口的 h.248消息发送给 MGW。
12、 根据权利要求 9所述的方法, 其特征在于, 进行 A接口电路的 释放后,该方法进一步包括: MGW将被释放的 A接口电路置为空闲态。
13、 一种 A接口电路管理***, 其特征在于, 该***包括: 媒体网 关 MGW和移动交换中心服务器 MSC Server, 其中,
MSC Server用于向 MGW发送请求为 UE分配 A接口电路的电路资 源分配请求;
MGW用于接收 MSC Server发送来的所述电路资源分配请求,获取 该请求中携带的电路选择参考信息, 根据该请求中携带的电路选择参考 信息, 在本局配置的 A接口电路资源中为 UE分配 A接口电路, 将被分 配给 UE的所述 A接口电路所对应的 A接口电路的信息, 发送给 MSC Server„
14、 根据权利要求 13所述的***, 其特征在于, 所述 MGW进一 步用于将被分配 UE的 A接口电路置为忙态。
15、 根据权利要求 13所述的***, 其特征在于, 所述 MSC Server 进一步用于向 MGW发送请求释放被分配给 UE的 A接口电路的电路资 源释放请求;
所述 MGW进一步用于接收 MSC Server发送来的所述电路资源释放 请求,并根据其中携带的需要释放的 A接口电路的信息进行 A接口电路 的释放。
16、 根据权利要求 15所述的***, 其特征在于, 所述 MGW进一 步用于将被释放的 A接口电路设置为空闲态。
17、 一种媒体网关 MGW, 其特征在于, 该 MGW包括: 收发单元 和分配单元, 其中,
收发单元用于接收移动交换中心服务器 MSC Server发送来的请求 为用户设备 UE分配 A接口电路的电路资源分配请求, 将收到的电路资 源分配请求发送给分配单元;
分配单元, 用于接收来自收发单元的所述电路资源分配请求, 获取 该请求中携带的电路选择参考信息, 根据该请求中携带的电路选择参考 信息, 在本局配置的 A接口电路资源中为 UE分配 A接口电路;
所述收发单元, 用于将被分配给 UE的所述 A接口电路所对应的 A 接口电路的信息发送给 MSC Server。
18、 根据权利要求 17所述的 MGW, 其特征在于, 分配单元进一步 用于将被分配给 UE的 A接口电路设置为忙态。
19、 根据权利要求 17或 18所述的 MGW, 其特征在于, 该 MGW 进一步包括释放单元, 其中,
收发单元进一步用于接收 MSC Server发送来的请求释放被分配给 UE的 A接口电路的电路资源释放请求, 将该请求发送给释放单元; 释放单元用于接收来自收发单元的电路资源释放请求, 根据其中携 带的需要释放的 A接口电路的信息进行 A接口电路的释放。
20、 根据权利要求 19所述的 MGW, 其特征在于, 所述释放单元进 一步用于将被释放的 A接口电路设置为空闲态。
PCT/CN2007/070625 2006-09-28 2007-09-05 Procédé et système pour gestion d'un circuit d'interface a et passerelle media WO2008037208A1 (fr)

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