WO2009039695A1 - Système de communication ip, appareil et procédé de traitement de message selon le protocole sip - Google Patents

Système de communication ip, appareil et procédé de traitement de message selon le protocole sip Download PDF

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Publication number
WO2009039695A1
WO2009039695A1 PCT/CN2007/003659 CN2007003659W WO2009039695A1 WO 2009039695 A1 WO2009039695 A1 WO 2009039695A1 CN 2007003659 W CN2007003659 W CN 2007003659W WO 2009039695 A1 WO2009039695 A1 WO 2009039695A1
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WIPO (PCT)
Prior art keywords
message
application server
sip
core network
server
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PCT/CN2007/003659
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English (en)
French (fr)
Inventor
Yinjun Han
Xinhua Jia
Yong Yang
Original Assignee
Zte Corporation
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Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to EP07855703.0A priority Critical patent/EP2200247B1/en
Priority to US12/679,655 priority patent/US8713351B2/en
Publication of WO2009039695A1 publication Critical patent/WO2009039695A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/56Provisioning of proxy services
    • H04L67/563Data redirection of data network streams
    • 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
    • H04L65/1045Proxies, e.g. for session initiation protocol [SIP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/60Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/63Routing a service request depending on the request content or context

Definitions

  • the present invention relates to a session message processing method in an IP communication network, and more particularly to an NGN (Next Generation Network) network or an IMS (IP Multimedia System, IP multimedia system), a message processing method based on SIP (Session Initialization Protocol) protocol, an apparatus, and an IP communication system using the same.
  • NGN Next Generation Network
  • IMS IP Multimedia System, IP multimedia system
  • SIP Session Initialization Protocol
  • the present invention is proposed to overcome the above problems. SUMMARY OF THE INVENTION
  • the technical problem to be solved by the present invention is to provide a SIP-based message processing method and apparatus, and an IP communication system using the same, to achieve a distributed implementation of a large-capacity application server in an NGN network or an IMS network.
  • the present invention provides a SIP protocol-based message processing method for a message processing system including a plurality of application servers and core network devices, the method comprising: processing steps from a core network message, for using a SIP proxy As a unified access port from the core network SIP message, the server determines and distributes the received SIP message to the corresponding application server for processing; the processing step from the application server message is used for the application from the SIP proxy server.
  • the unified access port of the server SIP message which will receive the SIP message according to the reference of the application server.
  • the distribution is distributed to the corresponding core network device for processing.
  • the foregoing SIP protocol-based message processing method includes, after receiving the message from the network layer by using the SIP proxy server, before the message processing step from the core network and the message processing step from the application server, determining whether the message is from the core network or the application.
  • the steps of the server, such as from the core network perform the processing steps from the core network message, otherwise the processing steps from the application server message are performed.
  • the processing step from the core network message further includes determining whether there is a tag parameter in the to header in the message, and whether it is a request message step, such as a tag parameter in the to header of the message And a request message, the SIP proxy server distributes the message to the corresponding application server according to the pre-configured message distribution policy, and adds a flag of the core network device from the end of the message; for example, the to header in the message If there is a tag parameter, or a response message, it is further determined whether there is application server identification information in the tag parameter in the to header in the message.
  • the foregoing SIP protocol-based message processing method determines whether there is application server identification information in the tag parameter in the to header in the message, and if yes, the SIP proxy server distributes the message to the corresponding application server. At the same time, at the end of the message, the flag of the core network device from which the message is sent is added; otherwise, it is further determined whether there is an application server identifier in the tag parameter in the from header in the message.
  • the foregoing SIP protocol-based message processing method determines whether there is an application server identifier in the tag parameter in the from header in the message, and if yes, the SIP proxy server distributes the message to the corresponding application server, and simultaneously in the message At the end, add the flag of the core network device from which the message came from, otherwise, discard the message.
  • the foregoing SIP protocol-based message processing method further includes an application survival detecting step, configured to detect an application server failure by using a SIP proxy server, and transfer the traffic on the failed application server to another application server. on.
  • the foregoing SIP protocol-based message processing method further includes a step of adjusting a distribution policy, configured to perceive the performance of the application server according to the result of the survival detection by the SIP proxy server, and dynamically adjust the distribution policy of the application server according to the performance parameter of the application server.
  • the present invention also provides a message processing method based on the SIP protocol message processing method.
  • the device includes a plurality of application servers and a SIP proxy server, and the SIP proxy server receives SIP messages from the core network or the application server as a unified access port, and determines the SIP messages and distributes them to the corresponding application server or the core network device. deal with.
  • the SIP proxy server is further configured to detect a failure of the application server, and transfer the traffic on the failed application server to another application server.
  • the SIP protocol-based message processing device, the SIP proxy server is further configured to perceive the performance of the application server according to the result of the fault detection, and dynamically adjust the distribution policy of the application server according to the performance parameter of the server.
  • the present invention also provides an IP communication system using the above method and apparatus, comprising a SIP-based message processing apparatus, the apparatus comprising a plurality of application servers and a SIP proxy server, the SIP proxy server acting as A unified access port receives SIP messages from the core network or the application server, and determines the SIP messages and distributes them to the corresponding application server or core network device for processing.
  • the invention realizes message interaction between the core network and the application server by adding a SIP proxy server as a unified access port, and expands the application server when the processing capability of an application server is insufficient.
  • FIG. 1 is a schematic structural diagram of a message processing system based on SIP protocol in an IP communication system according to the present invention
  • FIG. 2 is a flowchart of a message processing method based on SIP protocol according to the present invention
  • FIG. 3 is a specific processing method based on SIP protocol of the present invention. Example flow chart.
  • a schematic diagram of a SIP-based message processing system architecture in an IP communication system 10 of the present invention includes a SIP-based message processing apparatus 10 in an IP communication system 10, at a front end, and a plurality of core network devices 1 2, X-connected SIP proxy server 100 (SipDisProxy) as a SIP signaling distribution device, at the back end of the SIP proxy server 100, there are several for processing
  • AppServer Application Server for SIP Signaling and Business Logic (AppServer) 1, 2 x. Core network equipment and
  • the SIP proxy server 100 takes the standard SIP signaling.
  • the SIP proxy server 100 and the application server are on the standard SIP signaling, plus some specific private fields.
  • the SIP proxy server 100 does not process the SIP message, but simply performs judgment and distribution according to the received SIP message, including distribution to different application servers and core network devices, and the distribution is based on special fields in the SIP signaling. For example, the called number, the calling number, the Call-ID, the address of the core network device, and so on.
  • the SIP proxy server 100 is stateless and has no data area. The processing procedure is simple and the performance is strong, and is not affected or affected by the call volume.
  • Step S201 the SIP proxy server 100 receives a message from the network layer
  • Step S202 determining whether the message is from a core network or an application server, such as from a core network.
  • Step S203 as step S210 is performed from the application server.
  • Step S203 determining whether there is a tag parameter in the to header in the message from the core network, and whether it is a request message;
  • Step S204 if there is no tag parameter in the to header in the message, and is a request message, then the SIP proxy server 100, according to the pre-configured message distribution policy, distribute the SIP request to the specified application server;
  • Step S205 if there is a tag parameter in the to header of the message, or a response message, then check the tag parameter in the to header.
  • Step S206 if there is application server identification information in the tag parameter in the to header, then Directly distributing the message to the application server according to the identification information, and at the end of the message, adding a flag from which core network device to receive the message;
  • Step S207 if there is no application server identification information in the tag parameter in the to header, Then, whether there is application server identification information in the tag parameter in the from header in the message;
  • Step S208 if there is application server identification information in the tag parameter in the from header, directly distributing the message to the application according to the identification information On the server, at the same time, at the end of the message, a flag is received from which core network device is received;
  • Step S209 if there is no application server identification information in the tag parameter in the from header, the message is discarded, and no processing is performed.
  • Step S210 the SIP proxy server 100 receives the message from the application server, and sends it to the corresponding core network device according to the instruction of the application server.
  • the above message processing procedure is further described.
  • the SIP proxy server 100 receives the message from the core network, it first determines whether there is a tag parameter in the to header, if there is no tag parameter in the to header, and is a request message, The description is a message outside the conversation.
  • the SIP proxy server 100 distributes the SIP message to the corresponding application server according to the pre-configured message distribution algorithm.
  • the application server responds, the identifier of the application server is placed.
  • the tag parameters in the to header are the same, so that the SIP proxy server 100 only needs to receive the message in the conversation.
  • the message can be distributed.
  • the application server when receiving the request initiated by the application server, the application server will put its identifier in the tag parameter in the from header of the message, because The message in the SIP dialog, the tag parameter in the from header is the same, so that the SIP proxy server 100 only needs to receive the message in the conversation.
  • the distribution of the message can be realized by the tag parameter in the from header; therefore, the SIP proxy server 100 can implement the distribution of the message in the conversation according to the tag parameter in the to header in the message or the tag parameter in the from header.
  • the SIP proxy server 100 receives the request message without the tag parameter in the to header, it indicates that it is a message outside the session, and then distributes to a different application server according to the message distribution policy, thereby realizing the balance of the service.
  • the distribution algorithm in the SIP proxy server 100 is configurable, and the SIP proxy server can also detect the survival of the application server, and the SIP proxy server can sense the performance of the application server according to the detected result, and the performance of the application server Parameter dynamic adjustment of application server distribution Strategy. If the SIP proxy server detects that an application server has failed, the traffic on the application server can be transferred to other application servers to achieve fault tolerance and redundancy of the call.
  • the SIP protocol-based message processing method of the present invention is further illustrated by using an embodiment.
  • the SIP proxy server 100 receives a message from the network layer.
  • the SIP proxy server 100 further determines whether the message is from the core network.
  • step S303 is performed from the core network, otherwise, step S310 is performed to remove the characters of the ends of the message, and the message is sent to the address specified by the senders.
  • the SIP proxy server 100 further determines whether there is a tag parameter in the to header in the message from the core network, and whether it is a request message;
  • Step S304 if there is no tag parameter in the to header in the message, and is a request The message is sent to the corresponding application server according to a specific application server distribution algorithm, and the recv_send field is added at the end.
  • Step S305 if there is a tag parameter in the to header in the message, or a response message, check whether there is SSx_ASx information in the tag parameter in the to header; step S306, if there is a tag parameter in the to header SSx - ASx information, then distribute the message to the corresponding ASx; Step S307, if there is no SSx_ASx information in the tag parameter in the to header, then check whether there is SSx_ASx information in the tag parameter in the from header in the message; S308. If there is SSx_ASx information in the tag parameter in the from header, then the message is distributed to the corresponding ASx.
  • step S309 if there is no SSx_ASx information in the tag parameter in the from header, the message is discarded.
  • the system is tested on a small machine with a CPU of 1.80 GHz and a memory of 1.0 G.
  • the call of 1024 caps is occupied by the CPU. 19.1% or so, and the single application server has a CPU of 1.80 GHz and a 1.0 g minicomputer handles 150 caps of calls, the CPU has reached about 80%, in this case, by extending the application server
  • the number can solve the expansion and reliability issues of the application server.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Telephonic Communication Services (AREA)

Description

基于 SIP协议的消息处理方法、 装置及 IP通信*** 技术领域 本发明涉及 IP通信网络中会话消息处理方法, 特别是涉及 NGN ( Next Generation Network,下 ~H弋网络) 网络或 IMS(IP Multimedia System , IP多媒 体***)网络中, 基于 SIP ( Session Initialization Protocol, 会话初始协议)协 议的消息处理方法、 装置及应用其的 IP通信***。 背景技术 在 NGN网络或 IMS网络中, 应用月艮务器(Application Server, AS )处 于核心网之上, 用来处理复杂的业务逻辑控制, 其性能受到业务逻辑的复杂 性, 数据库访问的频繁性的影响, 一台应用服务器的处理性能有限, 在话务 量不断增加时, 需要扩充应用服务器的数目来增强应用服务器的处理性能。 增加应用服务器的数目, 从核心网侧看, 势必会带来应用服务器 IP地址数目 的增加, 网络拓朴结构的变化, 用户分布的变化。 如果能实现在增加应用服 务器处理性能的同时, 无需改变核心网设备的配置, 将能很好的解决应用服 务器的性能瓶颈和扩容问题, 本发明正为克服以上问题而提出。 发明内容 本发明所要解决的技术问题在于,提供一种基于 SIP协议的消息处理方 法、 装置及应用其的 IP通信***, 以达到在 NGN网络或 IMS网络中大容量 应用服务器的分布式实现, 在应用服务器扩容和升级时, 不需要核心网设备 做任何配置的改动, 同时还提高应用服务器的稳定性和健壮性。 为达到上述目的, 本发明提供的基于 SIP协议的消息处理方法, 用于包 括若干应用服务器和核心网设备的消息处理***, 该方法包括: 来自核心网消息的处理步骤,用于通过一 SIP代理月良务器作为来自核心 网 SIP消息的统一接入口, 将接收到的 SIP消息进行判断并分发给相应的应 用服务器进行处理; 来自应用服务器消息的处理步骤,用于通过 SIP代理服务器作为来自应 用服务器 SIP消息的统一接入口, 将接收到的 SIP消息根据应用服务器的指 示分发到相应的核心网设备进行处理。 上述基于 SIP协议的消息处理方法,在来自核心网消息处理步骤和来自 应用服务器消息处理步骤之前, 还包括一通过 SIP代理服务器接收到来自网 络层的消息后, 判断该消息是来自核心网还是应用服务器的步骤, 如来自核 心网, 则执行来自核心网消息处理步骤, 否则执行来自应用服务器消息的处 理步骤。 上述基于 SIP协议的消息处理方法,来自核心网消息的处理步骤进一步 包括判断消息中的 to头部中有无 tag参数, 并且是否是请求消息的步骤, 如 消息中的 to头部中没有 tag参数, 并且是请求消息, SIP代理服务器根据预 先配置的消息分发策略, 分发该消息到相应的应用服务器上, 同时在该消息 末尾添加该消息来自哪个核心网设备的标志; 如消息中的 to头部中有 tag参 数, 或是响应消息, 则进一步判断消息中的 to头部中的 tag参数中是否有应 用服务器标识信息。 上述基于 SIP协议的消息处理方法,判断消息中的 to头部中的 tag参数 中是否有应用服务器标识信息的步骤中, 如有, 则 SIP代理服务器分发该消 息到相应的应用月良务器上, 同时在该消息末尾添加该消息来自哪个核心网设 备的标志; 否则 , 进一步判断消息中的 from头部中的 tag参数中是否有应用 服务器标识。 上述基于 SIP协议的消息处理方法, 判断消息中的 from头部中的 tag参 数中是否有应用服务器标识的步骤中, 如有, 则 SIP代理服务器分发该消息 到相应的应用服务器上, 同时在消息末尾添加该消息来自哪个核心网设备的 标志, 否则, 丢弃该消息。 上述基于 SIP 协议的消息处理方法, 还包括一应用;^务器存活检测步 骤, 用于通过 SIP代理服务器检测应用服务器的故障, 并将出现故障的应用 服务器上的话务量转移到其他应用服务器上。 上述基于 SIP协议的消息处理方法, 还包括一调整分发策略的步骤, 用 于通过 SIP代理服务器根据存活检测的结果感知应用服务器的性能, 并根据 应用服务器的性能参数动态调整应用服务器的分发策略。 进一步的,本发明还提供一种基于 SIP协议的消息处理方法的消息处理 装置, 包括若干应用服务器和一 SIP代理服务器, 该 SIP代理服务器作为一 个统一接入口接收来自核心网或者应用服务器的 SIP消息, 并对 SIP消息进 行判断后分发给相应的应用服务器或者核心网设备进行处理。 上述基于 SIP协议的消息处理装置, SIP代理服务器还用于检测应用服 务器的故障, 并将出现故障的应用服务器上的话务量转移到其他应用服务器 上。 上述基于 SIP协议的消息处理装置, SIP代理服务器还用于根据故障检 测的结果感知应用月艮务器的性能, 并 居应用 务器的性能参数动态调整应 用服务器的分发策略。 更进一步的,本发明还提供了一种应用上述方法和装置的 IP通信***, 包括一基于 SIP协议的消息处理装置, 该装置包括若干应用服务器和一 SIP 代理服务器, 该 SIP代理良务器作为一个统一接入口接收来自核心网或者应 用服务器的 SIP消息, 并对 SIP消息进行判断后分发给相应的应用服务器或 者核心网设备进行处理。 与现有技术相比,发明通过增加一 SIP代理^务器作为统一接入口实现 核心网与应用月艮务器间的消息交互, 在一个应用月艮务器处理能力不够时, 通 过扩充应用服务器的数目, 来提高应用服务器的处理能力, 而不需要核心网 设备做任何配置上的改变,有效的解决了应用服务器的性能瓶颈和扩容问题; 同时本发明中的 SIP代理服务器还能够实现应用服务器的容错和冗余功能, 实现了应用服务器的高可靠性。 附图说明 图 1是本发明 IP通信***中基于 SIP协议的消息处理***构架示意图; 图 2是本发明基于 SIP协议的消息处理方法流程图; 以及 图 3是本发明基于 SIP协议消息处理方法具体实施例流程图。 具体实施方式 下面结合附图和具体实施例详细说明本发明的技术方案,以更进一步了 解本发明之目的、 方案及功效, 但并非作为对本发明所附权利要求保护范围 的限制。 参考图 1, 本发明 IP通信*** 10中基于 SIP协议的消息处理***构架 示意图, 在 IP通信*** 10中, 包括一个基于 SIP协议的消息处理装置 10, , 在前端,与多个核心网设备 1、2... X相连接的 SIP代理服务器 lOO(SipDisProxy) 作为 SIP信令分发设备, 在 SIP代理服务器 100的后端, 有若干个用来处理
SIP 信令和业务逻辑的应用服务器 (AppServer ) 1、 2 x。 核心网设备和
SIP代理服务器 100之间走的是标准的 SIP信令, SIP代理服务器 100和应用 服务器之间是在标准 SIP信令的 出上, 加上一些特定的私有字段。 SIP代 理服务器 100不处理 SIP消息, 只是根据收到的 SIP的消息, 进行简单的判 断和分发, 包括分发到不同的应用服务器和核心网设备,其分发的依据是 SIP 信令中的特殊字段, 比如被叫号码, 主叫号码, Call-ID, 核心网设备的地址 等。 SIP代理服务器 100是无状态的, 无数据区的, 其处理过程简单, 性能 很强, 不受呼叫量的影响或影响很小; 而相反的, 应用服务器需要处理 SIP 信令, 业务逻辑, 和数据库访问, 在呼叫量增大时, 需要通过增加应用服务 器的数目来达到相应的处理性能。 本发明通过增加一 SIP代理 Λ艮务器 100作 为一个统一接入口实现应用服务器与核心网设备间的消息交互, 实现应用服 务器的大容量分布, 可以很好的解决应用服务器的性能瓶颈和扩容问题。 参考图 2, 进一步说明本发明基于 SIP协议的消息处理流程: 步骤 S201 , SIP代理服务器 100接收到来自网络层的消息; 步骤 S202, 判断该消息是来自核心网还是应用服务器, 如来自核心网 执行步骤 S203 , 如来自应用服务器执行步骤 S210。 步骤 S203 , 判断来自核心网的消息中的 to头部中有无 tag参数, 并且 是否是请求消息; 步骤 S204 , 如果消息中的 to头部中没有 tag参数, 并且是请求消息, 那么 SIP代理服务器 100根据预先配置的消息分发策略, 把该 SIP请求分发 到指定的应用服务器上; 步骤 S205 , 如果消息中的 to头部中有 tag参数, 或是响应消息, 那么 检查 to头部中的 tag参数中是否有应用服务器标识信息; 步骤 S206 , 如果 to头部中的 tag参数中有应用服务器标识信息, 那么 直接根据该标识信息把消息分发到该应用服务器上, 同时在消息末尾, 加上 从哪个核心网设备接收到消息的标志; 步骤 S207, 如果 to头部中的 tag参数中没有应用服务器标识信息, 那 么查看消息中的 from头部中的 tag参数中是否有应用服务器标识信息; 步骤 S208, 如果 from头部中的 tag参数中有应用服务器标识信息, 那 么直接根据该标识信息把消息分发到该应用服务器上, 同时在消息末尾, 加 上从哪个核心网设备接收到消息的标志; 步骤 S209 , 如果 from头部中的 tag参数中没有应用服务器标识信息, 那么丢弃该消息, 不作任何处理。 步骤 S210, SIP代理服务器 100接收到来自应用服务器的消息, 根据应 用服务器的指示, 发送到相应的核心网设备。 下面对上述消息处理过程做进一步说明:在 SIP代理服务器 100接收到 来自核心网的消息时, 首先判断 to头部中有无 tag参数, 如果 to头部中没有 tag参数, 并且是请求消息, 说明是对话外的消息, SIP代理服务器 100根据 预先配置的消息分发算法, 4巴 SIP消息分发到相应的应用月 务器, 应用 1 务 器在回响应时,会把该应用服务器的标识放在生成的消息中的 to头部中的 tag 参数中, 由于 SIP对话内的消息, to头部中的 tag参数都是一样的, 这样, SIP代理服务器 100在收到对话内的消息时, 只需要根据 to头部中的 tag参 数就可以实现消息的分发; 同样, 在收到应用服务器主动发起的请求时, 该 应用服务器会把其标识放在消息中的 from头部中的 tag参数中, 由于 SIP对 话内的消息, from头部中的 tag参数都是一样的, 这样, SIP代理服务器 100 在收到对话内的消息时, 只需要根据 from头部中的 tag参数就可以实现消息 的分发; 所以 SIP代理服务器 100可以根据消息中的 to头部中的 tag参数, 或者 from头部中的 tag参数就可以实现对话内消息的分发。 在 SIP代理服务 器 100接收到没有 to头部中的 tag参数的请求消息时,表示是对话外的消息, 则根据消息分发策略, 实现到不同应用服务器的分发, 从而实现业务的负栽 均衡。
SIP代理月艮务器 100中的分发算法是可配置的, 该 SIP代理服务器还能 对应用服务器的存活检测, 该 SIP代理服务器根据检测的结果能够感知应用 服务器的性能, 并 居应用服务器的性能参数动态的调整应用服务器的分发 策略。 如果 SIP代理服务器检测到一台应用服务器出现故障, 可以把该应用 服务器上话务量转移到其它应用服务器上实现呼叫的容错和冗余。 参考图 3 , 以实施例进一步说明本发明基于 SIP协议的消息处理方法, 步骤 S301 , SIP代理服务器 100接收到来自网络层的消息; 步骤 S302 , SIP代理服务器 100进一步判断该消息是否来自核心网, 如 来自核心网执行步骤 S303 , 否则, 执行步骤 S310去除该消息末尾 sendss字 符, 同时把该消息发给 sendss指定的地址。 步骤 S303, SIP代理服务器 100再进一步判断来自核心网的消息中的 to 头部中有无 tag参数, 并且是否是请求消息; 步骤 S304 , 如果消息中的 to头部中没有 tag参数, 并且是请求消息, 根据特定的应用服务器分发算法把该消息发给相应的应用服务器, 同时在末 尾添力口 recv— send字段。 步骤 S305 , 如果消息中的 to头部中有 tag参数, 或是响应消息, 那么 检查 to头部中的 tag参数中是否有 SSx— ASx信息; 步骤 S306,如果 to头部中的 tag参数中有 SSx— ASx信息,那么把该消息 分发给相应的 ASx; 步骤 S307 , 如果 to头部中的 tag参数中没有 SSx_ASx信息, 那么查看 消息中的 from头部中的 tag参数中是否有 SSx_ASx信息; 步骤 S308 , 如果 from头部中的 tag参数中有 SSx_ASx信息, 那么把该 消息分发给相应的 ASx; 步骤 S309 , 如果 from头部中的 tag参数中没有 SSx— ASx信息, 那么丢 弃该消息。 采用本发明的方法和***, 在一个应用服务器处理能力不够时, 通过扩 充应用服务器的数目, 来提高应用服务器的处理能力, 而不需要核心网设备 t文任何配置上的改变; 同时本发明中的 SIP代理月良务器通过和应用月 务器之 间的心跳消息, 检测服务器的处理能力和存活, 实现应用服务器之间的负荷 分担和容错冗余能力; 同时本发明提供的 SIP代理服务器***提供了多种消 息分发的能力, 可以实现灵活的消息分发; 本发明经过了实际的应用, 具有 ί艮好的效果, 本***在 CPU 为 1.80GHZ, 内存为 1.0G 的小型机上测试, 1024caps 的呼叫, CPU 占用 19.1 %左右, 而单个的应用月良务器在 CPU 为 1.80GHZ, 内存为 1.0G的小型机处理 150caps的呼叫的时候, CPU已经达到 80 %左右, 在这种情况下, 通过扩展应用服务器的数量可以解决应用服务器 的扩容和可靠性问题。 虽然本发明已以一较佳实施例揭露如上, 然其并非用以限定本发明, 在 不背离本发明精神及其实质的情况下, 熟悉本领域的技术人员当可根据本发 明作出各种相应的改变和变形, 但这些相应的改变和变形都应属于本发明所 附的权利要求的保护范围。

Claims

权 利 要 求 书 一种基于 SIP协议的消息处理方法, 用于包括若干应用 艮务器和核心 网设备的消息处理***, 其特征在于, 该方法包括: 来自核心网消息的处理步骤, 用于通过一 SIP代理服务器作为来 自核心网 SIP消息的统一接入口, 将接收到的所述 SIP消息进行判断 并分发给相应的应用服务器进行处理; 来自应用服务器消息的处理步骤, 用于通过所述 SIP代理服务器 作为来自应用服务器 SIP消息的统一接入口, 将接收到的所述 SIP消 息根据所述应用服务器的指示分发到相应的核心网设备进行处理。 根据权利要求 1所述的基于 SIP协议的消息处理方法, 其特征在于, 在所述来自核心网消息处理步骤和来自应用 良务器消息处理步骤之 前, 还包括一通过所述 SIP代理服务器接收到来自网络层的消息后, 判断该消息是来自核心网还是应用服务器的步骤, 如来自核心网, 则 执行所述来自核心网消息处理步骤, 否则执行所述来自应用服务器消 息的处理步骤。 根据权利要求 2所述的基于 SIP协议的消息处理方法, 其特征在于, 所述来自核心网消息的处理步骤进一步包括判断所述消息中的 to头部 中有无 tag参数, 并且是否是请求消息的步骤, 如所述消息中的 to头 部中没有 tag参数, 并且是请求消息, 所述 SIP代理服务器根据预先配 置的消息分发策略, 分发该消息到相应的应用服务器上, 同时在该消 息末尾添加该消息来自哪个核心网设备的标志; 如所述消息中的 to头 部中有 tag参数, 或是响应消息, 则进一步判断所述消息中的 to头部 中的 tag参数中是否有所述应用服务器标识信息。
4. 根据权利要求 3所述的基于 SIP协议的消息处理方法, 其特征在于 : 所述判断消息中的 to头部中的 tag参数中是否有所述应用服务器标识 信息的步骤中, 如有, 则所述 SIP代理服务器分发该消息到相应的应 用月 务器上, 同时在该消息末尾添加该消息来自哪个核心网设备的标 志; 否则, 进一步判断消息中的 from头部中的 tag参数中是否有应用 月良务器标识。
5. 根据权利要求 4所述的基于 SIP协议的消息处理方法, 其特征在于, 所述判断消息中的 from头部中的 tag参数中是否有应用服务器标识的 步骤中, 如有, 则所述 SIP代理服务器分发该消息到相应的应用服务 器上, 同时在消息末尾添加该消息来自哪个核心网设备的标志, 否则, 丢弃该消息。
6. 根据权利要求 1所述的基于 SIP协议的消息处理方法, 其特征在于, 还包括一应用服务器存活检测步骤, 用于通过所述 SIP代理服务器检 测所述应用服务器的故障, 并将出现故障的应用服务器上的话务量转 移到其他应用服务器上。
7. 根据权利要求 6所述的基于 SIP协议的消息处理方法, 其特征在于, 还包括一调整分发策略的步骤, 用于通过所述 SIP代理服务器根据所 述存活检测的结果感知所述应用服务器的性能, 并根据所述应用服务 器的性能参数动态调整应用服务器的分发策略。
8. 一种应用上述权利要求 1 ~ 7中任一项所述的基于 SIP协议的消息处理 方法的消息处理装置, 其特征在于, 包括若干应用服务器和一 SIP代 理服务器, 该 SIP代理服务器作为一个统一接入口接收来自核心网或 者应用服务器的 SIP消息, 并对 SIP消息进行判断后分发给相应的应 用月良务器或者核心网设备进行处理。
9. 根据权利要求 8所述的基于 SIP协议的消息处理装置, 其特征在于, 所述 SIP代理服务器还用于检测所述应用服务器的故障, 并将出现故 障的应用服务器上的话务量转移到其他应用服务器上。
10. 根据权利要求 9所述的基于 SIP协议的消息处理装置, 其特征在于, 所述 SIP代理服务器还用于根据所述故障检测的结果感知所述应用服 务器的性能, 并根据所述应用服务器的性能参数动态调整应用服务器 的分发策略。
11. 一种应用上述权利要求 1 ~ 7中任一项所述的基于 SIP协议的消息处理 方法的 IP通信***, 包括一基于 SIP协议的消息处理装置, 其特征在 于, 该装置包括若干应用服务器和一 SIP代理服务器, 该 SIP代理服 务器作为一个统一接入口接收来自核心网或者应用服务器的 SIP消息, 并对 SIP 消息进行判断后分发给相应的应用服务器或者核心网设备进 行处理。
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