WO2006074603A1 - Procede de distribution de messages entre un dispositif de commande de passerelle support et une passerelle support - Google Patents

Procede de distribution de messages entre un dispositif de commande de passerelle support et une passerelle support Download PDF

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Publication number
WO2006074603A1
WO2006074603A1 PCT/CN2006/000036 CN2006000036W WO2006074603A1 WO 2006074603 A1 WO2006074603 A1 WO 2006074603A1 CN 2006000036 W CN2006000036 W CN 2006000036W WO 2006074603 A1 WO2006074603 A1 WO 2006074603A1
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Prior art keywords
media gateway
message
ccu
mgw
mgc
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PCT/CN2006/000036
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English (en)
French (fr)
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Kun Su
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Huawei Technologies Co., Ltd.
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Publication of WO2006074603A1 publication Critical patent/WO2006074603A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/102Gateways
    • H04L65/1033Signalling gateways
    • H04L65/104Signalling gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/102Gateways
    • H04L65/1023Media gateways
    • H04L65/103Media gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/102Gateways
    • H04L65/1043Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1101Session protocols

Definitions

  • the present invention relates to a method of message distribution between a media gateway controller and a media gateway. Background technique
  • a switch in order to meet the requirements of large capacity, a switch usually works by multiple call processing boards (CCUs). Each CCU can process tens of thousands of calls, and multiple CCUs in the switch can work together to handle hundreds of calls. Ten thousand calls.
  • CCUs call processing boards
  • a Next Generation Network is a network in which service control and bearer are separated.
  • the service control part is called a Media Gateway Controller (MGC)
  • MGW Media Gateway Controller
  • H.248 International TELECOMMUNICATION UNION, an H-series protocol proposed by the International Telecommunications Union
  • MGCP Media Gateway Control Protocol
  • the switch can decide which CCU handles the call at the beginning of the call. Then in order to establish a call, the CGC of the MGC will send a request message to the MGW, and the MGW will also send a response message to the MGC.
  • the CGC of the MGC will send a request message to the MGW, and the MGW will also send a response message to the MGC.
  • the switch first needs to maintain a large table, and secondly, to ensure the correctness of the contents recorded in the table, that is, to ensure that the CCU that actually processes a call and the record of this table are The content is consistent; Finally, because the table is large, the query efficiency may be low.
  • An object of the present invention is to provide a method for message distribution between a media gateway controller and a media gateway, when the media gateway responds to a message of the media gateway controller or when the media gateway reports an event detection message to the media gateway controller, It has high accuracy of message distribution and high query efficiency.
  • a method for message distribution between a media gateway controller and a media gateway comprising:
  • A. Set a number for each call processing board in the media gateway controller
  • the media gateway controller carries the corresponding number of the call processing board in the request message sent to the media gateway;
  • the media gateway carries the call processing board number in the postback response message, and the media gateway controller sends the response message to the corresponding call processing board for processing according to the processing board number in the response message.
  • the call processing board number is recorded in the transaction number.
  • the request message and the response message are specified by the H248 protocol or the MGCP protocol, and the request message includes an event detection request message, and the response message includes an event report.
  • the media gateway of the present invention adds the number of the call processing board in the transaction number and the event request number in the message responding to the media gateway controller, so that the distribution board can accurately distribute the message to the corresponding call processing board without maintenance.
  • the huge record table improves the efficiency of querying message distribution.
  • FIG. 1 is a schematic structural view of a switch according to the present invention.
  • FIG. 2 is a schematic diagram of a communication protocol between a media gateway and a media gateway controller according to the present invention
  • FIG. 3 is a schematic diagram of message distribution between a media gateway and a media gateway controller according to the present invention
  • FIG. 4 is an embodiment of the method according to the present invention; flow chart.
  • step 1 a number is set for each call processing board in the MGC, such that the request message sent by the MGC at the MGW The number of the corresponding call processing board is carried in the message; after the MGW performs the corresponding operation in step 3 according to the request, the call processing board number may be carried in the MGC return response message in step 4, so that The MGC sends the response message to the corresponding call processing board for processing according to the processing board number in the response message.
  • H.248 protocol as an example for detailed description. Of course, protocols such as MGCP can also be used.
  • a message between an MGC and an MGW can contain one or more transactions, and each transaction has a transaction number, which is recorded as: TransactionID.
  • the transaction includes a request and a response.
  • the TransactionID of the request transaction is specified by the sender of the message, and the TransactionID of the response transaction must be the same as the TransactionID in the request message.
  • the transaction is generally initiated by the MGC, that is: the MGC sends a request message to the MGW; the MGW sends a response message to the MGC. In another case, the transaction can also be initiated by the MGW.
  • the MGC will request the MGW to detect certain events. When the MGW detects these events, it will report to the MGC actively, and the TransactionID of the reported message is allocated by the MGW.
  • the H.248 and MGCP protocols also specify: When the MGC requests the MGW to detect certain events, the MGC specifies the RequestID (Request Number) corresponding to the detection event. When the MGW detects the requested event, it reports to the MGC. Join the RequestID.
  • the present invention distributes the message sent by the MGW to the MGC correctly and efficiently to each CCU by using the Transaction ID and RequestID assigned by the MGC.
  • each CCU in the MGC is numbered first, and the number is recorded as CCU_ID, which may be composed of 1 byte or a plurality of binary bits (here, only 1 byte is taken as an example). Both the TransactionID and the RequestID are 4 bytes. When the MGC allocates the TransactionID and RequestID, some bits of them are filled in as CCU-ID, for example: The highest 1 byte. MGC can respond to CCU-ID positively for response messages and event reporting messages. It is distributed to any CCU for the corresponding business or transaction processing.
  • the MGC fills in the highest byte of TransactionlD as the CCU_ID.
  • the MGW sends back the response message, it will carry the TransactionlD.
  • the response message first arrives at the distribution board, and the distribution board extracts the TransactionlD and extracts the CCUJD from it. Then, the message is distributed to the corresponding CCU for processing according to the extracted CCU_ID.
  • the filling refers to writing the CCUJD represented by 1 byte in the above example to the highest byte of the TransactionlD, so that the TransactionlD can carry the CCU— ID.
  • the distribution board extracts the CCU_ID from Transaction1D, since the CCU_ID is filled in as the highest byte of Transaction1D, only the highest byte of Transaction1D needs to be read, that is, the CCU-ID is obtained. .
  • the MGC When the MGC requests the MGW to detect the event, it specifies the RequestlD corresponding to the detection, and fills in the highest word of RequestlD as the CCU_ID.
  • the MGW When the MGW detects the requested event, it reports the message to the MGC, and the reported message carries the specified CCUJD.
  • the report message first arrives at the distribution board. The distribution board recognizes that this is a message that the MGW actively reports, and then extracts RequestlD from it, and extracts the CCU_ID from it. Finally, the reported message is distributed to the corresponding CCU according to the CCU_ID. deal with.
  • the above filling and extracting processing for RequestlD is the same as the filling and extracting of the above TransactionlD, and will not be described herein.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Description

媒体网关控制器和媒体网关之间消息分发的方法 技术领域 本发明涉及一种媒体网关控制器和媒体网关之间消息分发的方法。 背景技术
现代的交换机都是大容量、 高可靠的设备, 要求一台交换机能同时处 理几十万甚至上百万的用户。 参见图 1 , 为了达到大容量的要求, 一台交 换机通常由多个呼叫处理板(CCU )协同工作, 每个 CCU能处理几万个 呼叫, 交换机中的多个 CCU协调工作就能处理上百万个呼叫。
参见图 2, 下一代网络 ( Next Generation Network, 简称 NGN )是业 务控制和承载相分离的网络, 业务控制部分称为媒体网关控制器(Media Gateway Controller,简称 MGC ),承载部分称为媒体网关( Media Gate Way, 简称 MGW ) , H.248 ( INTERNATIONAL TELECOMMUNICATION UNION, 国际电信同盟提出的一个 H 系列协议)和媒体网关控制协议 ( Media Gateway Control Protocol, 简称 MGCP )定义了 MGC和 MGW间 的通信接口。
按照大容量的要求, MGC中设有多个 CCU。 通常根据数据配置或其 它的分发策略, 交换机在呼叫一开始就能决定由哪个 CCU对呼叫进行处 理。 随后为了建立呼叫, MGC的 CCU会给 MGW发送请求消息, MGW 也会给 MGC发送响应消息。但是, 在多块 CCU存在的情况下,应当保证 从 MGW来的消息能正确地分发到不同的 CCU。
参见图 3 , 在分发板上, 记录有所有呼叫和相应呼叫目前由哪个 CCU 处理的信息。 MGW发回的消息会首先经过分发板, 收到由 MGW发回的 消息后, 分发板查询自己的记录表, 然后决定把 MGW发回的消息分发给 哪个 CCU。
按照上述的处理方式, 所述的交换机首先需要维护一张庞大的表, 其 次还要保证这张表记录的内容的正确性, 即: 要保证实际处理某个呼叫的 CCU与这张表记录的内容一致; 最后, 由于所述的表比较庞大, 查询效率 可能比较低。 发明内容
本发明的一个目的是提供一种媒体网关控制器和媒体网关之间消息 分发的方法, 在媒体网关响应媒体网关控制器的消息时或者在媒体网关给 媒体网关控制器上报的事件检测消息时 , 具有较高的消息分发的正确性和 较高的查询效率。
本发明是通过如下的技术方案解决上述技术问题的:
一种媒体网关控制器和媒体网关之间消息分发的方法, 包括:
A、 为媒体网关控制器中的每个呼叫处理板设置编号;
B、 媒体网关控制器在向媒体网关发送的请求消息中携带相应的呼叫 处理板的编号;
c、 媒体网关在回发响应消息中携带所述呼叫处理板编号, 媒体网关 控制器根据所述响应消息中的处理板编号将所述响应消息发送到对应的 呼叫处理板进行处理。
所述的呼叫处理板编号记录在所述事务号中。
所述请求消息和所述响应消息为 H248协议或 MGCP协议规定的消 所述请求消息包括事件检测请求消息,所述响应消息包括事件报告消 if
本发明的媒体网关在响应媒体网关控制器的消息中通过在事务号和 事件请求编号中加入呼叫处理板的编号, 使得分发板能够准确地将消息分 发到相应的呼叫处理板上, 而无需维护庞大的纪录表, 提高了消息分发的 查询效率。
附图说明 图 1为本发明交换机的结构示意图;
图 2为本发明媒体网关和媒体网关控制器之间的通信协议示意图; 图 3为本发明媒体网关和媒体网关控制器之间消息分发的示意图.; 图 4是本发明所述方法的实施例流程图。
具体实施方式 W
-3- 以下结合附图和具体的实施例对本发明作进一步的详细说明: 按照图 4, 首先在步骤 1为 MGC中的每个呼叫处理板设置编号, 这 样, 当 MGC在 MGW发送的请求消息时, 在消息中携带相应的呼叫处理 板的编号; 当 MGW按照所述请求在步骤 3进行相应的操作后, 即可在步 骤 4向 MGC回发响应消息中携带所述呼叫处理板编号, 使 MGC根据所 述响应消息中的处理板编号将所述响应消息发送到对应的呼叫处理板进 行处理。下面以应用 H.248协议为例进行详细说明,当然也可以采用 MGCP 等协议。
按照 H.248协议, 一条 MGC与 MGW之间的消息可以包含一个或多 个事务, 每个事务都会有一个事务号, 记为: TransactionID。 所述的事务 包括请求和响应,请求事务的 TransactionID由消息发送者指定, 响应事务 的 TransactionID必须与请求消息中的 TransactionID相同。
事务一般由 MGC发起, 即: 由 MGC发送请求消息给 MGW; MGW 再给 MGC发回响应消息。 在另一种情况下, 事务也可以由 MGW发起。 MGC会请求 MGW检测某些事件。 当 MGW检测到这些事件时, 会主动 上报给 MGC, 此时上报消息的 TransactionID就由 MGW分配。 H.248和 MGCP协议还同时规定: 当 MGC请求 MGW检测某些事件时, MGC会 指定这个检测事件对应的 RequestID (请求编号), 当 MGW检测到请求 的事件时,在上报给 MGC的消息中加入该 RequestID。与 H.248协议中事 务处理有关的内容请参见由人民邮电出版社 2002年 8月出版的 《以软交 换为核心的下一代网络技术》一书, 其中详细记载了事务消息的构成、 发 送、 响应等内容。
由此, 本发明则利用由 MGC分配的 TransactionID和 RequestID把 MGW发给 MGC的消息正确、 高效地分发给各个 CCU。
具体地, 先对 MGC中的每个 CCU进行编号, 该编号记为 CCU— ID, 它可以由 1个字节或多个二进制位构成(本文仅以 1字节为例进行描述)。 所述的 TransactionID 和 RequestID 都采用 4 个字节, 在 MGC 分配 TransactionID和 RequestID时, 把它们的某些位填写为 CCU一 ID , 例如: 最高的 1个字节。 MGC对响应消息和事件上报消息都能根据 CCU— ID正 确分发给任何一个 CCU进行相应的业务或事务处理。
1、 响应消息
MGC在给 MGW发送的请求消息中, 把 TransactionlD的最高字节填 写为 CCU— ID, MGW回发响应消息时将携带这个 TransactionlD, 响应消 息首先到达分发板,分发板提取其中的 TransactionlD并从中取出 CCUJD, 然后把消息按照所提取的 CCU_ID分发给对应的 CCU进行处理。 上述的 操作中, 所述的填写, 具体是指将上述举例中所述的以 1 个字节表示的 CCUJD 写到所述的 TransactionlD 的最高字节, 这样就使得所述的 TransactionlD能够携带 CCU— ID。当分发板从 TransactionlD中提取 CCU— ID 时, 由于所述的 CCU— ID被填写为 TransactionlD的最高字节, 因此, 只需 要将 TransactionlD的最高字节读出, 即获得了所述的 CCU一 ID。
2、 事件检查到消息
MGC在请求 MGW检测事件时,指定这个检测对应的 RequestlD,将 RequestlD的最高字填写为 CCU— ID。 当 MGW检测到请求的事件时, 通 过消息上报给 MGC, 该上报的消息中携带有指定的 CCUJD。 上报消息 首先到达分发板, 分发板识别出这是一个 MGW主动上报的消息, 然后从 其中提取 RequestlD, 并从中取出 CCU— ID, 最后, 把该上报的消息按照 CCU— ID分发给对应的 CCU进行处理。上述对于 RequestlD的填写、提取 处理与上述 TransactionlD的填写、 提取相同, 在此不再赘述。
最后应说明的是: 以上实施例仅用以说明本发明而并非限制本发明所 描述的技术方案; 因此, 尽管本说明书参照上述的各个实施例对本发明已 进行了详细的说明, 但是, 本领域的普通技术人员应当理解, 仍然可以对 本发明进行修改或者等同替换; 而一切不脱离本发明的精神和范围的技术 方案及其改进, 其均应涵盖在本发明的权利要求范围当中。

Claims

权 利 要 求
1、 一种媒体网关控制器和媒体网关之间消息分发的方法, 其特征在 于包括:
A、 为媒体网关控制器中的每个呼叫处理板设置编号;
B、 媒体网关控制器在向媒体网关发送的请求消息中携带相应的呼叫 处理板的编号;
C、 媒体网关在回发响应消息中携带所述呼叫处理板编号, 媒体网关 控制器根据所述响应消息中的处理板编号将所述响应消息发送到对应的 呼叫处理板进行处理。
2、 根据权利要求 1所述的媒体网关控制器和媒体网关之间消息分发 的方法, 其特征在于: 所述的呼叫处理板编号记录在所述事务号中。
3、 根据权利要求 1所述的媒体网关控制器和媒体网关之间消息分发 的方法,其特征在于:所述请求消息和所述响应消息为 H248协议或 MGCP 协议规定的消息。
4、 根据权利要求 1 所述的媒体网关控制器和媒体网关之间消息分发 的方法, 其特征在于: 所述请求消息包括事件检测请求消息, 所述响应消 息包括事件报告消息。
PCT/CN2006/000036 2005-01-12 2006-01-11 Procede de distribution de messages entre un dispositif de commande de passerelle support et une passerelle support WO2006074603A1 (fr)

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