CN101026618B - Method for realizing negotiated message receiving terminal for session initiation protocol domain - Google Patents

Method for realizing negotiated message receiving terminal for session initiation protocol domain Download PDF

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Publication number
CN101026618B
CN101026618B CN 200610033974 CN200610033974A CN101026618B CN 101026618 B CN101026618 B CN 101026618B CN 200610033974 CN200610033974 CN 200610033974 CN 200610033974 A CN200610033974 A CN 200610033974A CN 101026618 B CN101026618 B CN 101026618B
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terminal
request message
message
access
bifurcated
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CN 200610033974
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Chinese (zh)
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CN101026618A (en )
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王啸
赖昊
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华为技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents
    • H04L29/02Communication control; Communication processing contains provisionally no documents
    • H04L29/06Communication control; Communication processing contains provisionally no documents characterised by a protocol
    • H04L29/0602Protocols characterised by their application
    • H04L29/06027Protocols for multimedia communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1066Session control
    • H04L65/1083In-session procedures

Abstract

The invention discloses a method for realizing negotiated message receiving terminal of session initiation protocol domain. Setting up a fork process entity (FPE) between REFER initiator and each terminal, the method includes steps: REFER initiator sends REFER message; receiving ends are as multiuser terminals, where parallel forks take place; FPE sends REFER request to each terminal; FPE collects response from each user terminal, based on prearranged strategy, FPE or initiator selects terminal to receive REFER message. Setting up FPE, the invention eliminates non-controllable problem of terminal operation under condition of multiuser terminals, where parallel forks take place so as to realize stability of system.

Description

一种会话发起协议域协商消息接收终端的实现方法 One kind of session initiation domain implementation negotiation message receiving terminal protocol

技术领域 FIELD

[0001] 本发明涉及一种会话发起协议方法,尤其涉及的是一种会话发起协议域协商消息接收终端的实现方法,用于消除并行分叉问题。 [0001] The present invention relates to a method of a Session Initiation Protocol, in particular, it relates to a session initiation domain implementation protocol negotiation message receiving terminal, used to eliminate parallel Bifurcation.

背景技术 Background technique

[0002] 现有技术中,SIP (Session Initiation Protocol,会话发起协议)是IETF制定的多 [0002] prior art, SIP (Session Initiation Protocol, Session Initiation Protocol) is the IETF and more

媒体通信系统框架协议之一,它是一个基于文本的应用层控制协议,独立于底层协议, 用于建立、修改和终止IP网上的双方或多方多媒体会话。 One media communication protocol framework, which is a text-based application-layer control protocol is, independent of the underlying protocol for creating, modifying, and terminating two or more parties online IP multimedia session.

[0003] SIP协议为实现指示接收方访问指定资源的功能引入REFER方法,REFER方法在RFC 3515中定义,提供了一种指示对方依据所提供的信息向第三方发起会话的机制, 用于呼叫偏转等应用中。 [0003] SIP protocol to access the specified resource indicates that the receiving function is introduced to realize REFER method, REFER method defined in RFC 3515 in, provides a mechanism for directing the other initiates a session to a third party based on information provided for deflecting the call and other applications.

[0004] 一个REFER的简单流程如图1所示,其包括步骤: Simple processes [0004] a REFER shown in Figure 1, comprising the steps of:

[0005] (1) REFER发起方向REFER接收方发送REFER消息,请求接收方访问REFER 消息中指示的资源,如发起一个到第三方的呼叫;REFER请求还会隐性创建一个订阅。 [0005] (1) REFER REFER direction initiates sending REFER message recipient, to access a resource request that the recipient indicated in the REFER message, such as a call to a third party; REFER request to create a subscription also recessive.

[0006] (2) REFER 接收方接收REFER 请求,返回200/2020K ; [0006] (2) REFER REFER request recipient receives return 200 / 2020K;

[0007] (3) REFER接收方根据事件通知框架,发送一个NOTIFY (通知)消息,携带订阅的资源状态的内容信息; [0007] (3) REFER event notification recipient in accordance with the frame, it transmits a NOTIFY (notification) message carrying the subscription information of the content resource status;

[0008] (4) REFER发送方收到NOTIFY消息后,向接收方发送一个2000K响应,表示成功接收了NOTIFY消息。 [0008] (4) After the REFER received NOTIFY message sender sends a 2000K response to the recipient, indicating successful reception of the NOTIFY message.

[0009] (5) REFER接收方根据REFER方法中的指示动作,如发起呼叫(INVITE)。 [0009] (5) REFER REFER recipient in accordance with the method indicated in the operation, such as a call (INVITE). 这个动作的发生也可能是在向REFER发送方返回200/2020K时。 This action may also occur in the return 200 / 2020K REFER to the sender.

[0010] 上述REFER流程中,在没有建立会话的情况下,如果REFER接收方用户多终端(用户有多个注册终端共享一个公有标识),则会在检查和产生分叉(forking)的网络实体上发生分叉。 [0010] The REFER flow, without establishing a session, if multiple REFER recipient user terminal (user terminals to share a plurality of registered public user identity), and will be produced in the inspection bifurcation (the forking) network entity the occurrence of bifurcation. 检查和产生分叉的网络实体,后续简称分叉处理实体,在SIP域中可以是REFER接收方代理服务器,当发生并行分叉(并行分叉指分叉处理实体同时把REFER消息发给每个用户终端)时,用户的多个终端中可能有超过一个的终端接受请求返回200/2020K,并根据REFER方法中的指示动作,如发起INVITE,但分叉处理实体只接受从接收终端获得的一个成功响应。 Check and generating a bifurcated network entities, hereafter referred bifurcated processing entity may be a field in the SIP REFER recipient proxy server occurs when the diverging parallel (parallel processing entity bifurcated diverging means while the REFER message to each when the user terminal), a plurality of user terminals may have more than one terminal accepts the request returns 200 / 2020K, REFER method according to indicate the action, such as initiate the INVITE, but only accept a bifurcated processing entity obtained from the receiving terminal a successful response. 由于没有机制使其他终端的成功响应无效,这样就造成了终端响应的操作不可控,并造成网络资源的浪费。 Since there is no mechanism to the other end of a successful response is invalid, thus causing the operation of the terminal in response to the uncontrollable, and waste of network resources.

[0011] 因此,现有技术存在缺陷,而有待于改进和发展。 [0011] Thus, the prior art deficiencies, but room for improvement and development.

发明内容 SUMMARY

[0012] 本发明的目的在于提供一种会话发起协议域协商消息接收终端的实现方法,用于消除REFER消息发生分叉时的问题。 [0012] The object of the present invention is to provide a method for negotiating a session initiation message receiving terminal implemented protocol field, for eliminating problems occur bifurcated REFER message.

[0013] 本发明的技术方案包括: [0013] aspect of the present invention comprises:

[0014] 一种会话发起协议域协商消息接收终端的实现方法,其设置一分叉处理实体在指示终端访问指定资源的请求消息发起方和各终端之间,并包括步骤: [0014] A session initiation domain implementation protocol negotiation message receiving terminal, which is provided between a bifurcation process entities to access the resource specified in the request message indicating that the terminal and each terminal initiator, and comprising the steps of:

[0015] A、指示终端访问指定资源的请求消息发起方发送指示终端访问指定资源的请求消息; [0015] A, indicating the terminal access to a specified resource request message originating terminal sends the access request message indicating the specified resource;

[0016] B、接收方为多用户终端且发生并行分叉,所述分叉处理实体向各终端发送指示终端访问指定资源的请求消息请求; [0016] B, the recipient is a multi-user terminal and in parallel bifurcation occurs, the bifurcated processing entity each terminal transmits the access request message indicating that the terminal specified resource request;

[0017] C、所述分叉处理实体收集各用户终端的响应,根据预定策略由所述分叉处理实体选择接收指示终端访问指定资源的请求消息的终端,向所述选定的终端发送事件通知消息的成功响应,指示所述选定的终端访问指定资源的请求消息中所指示的动作。 [0017] C, the solid collected diverging processing in response to each user terminal, selected by the entity in accordance with a predetermined processing strategy bifurcated receiving access terminal indicating that the terminal specified resource request message, sends an event to the selected terminal notification message success response, indicating that the selected terminal to access the specified resource request message indicated in operation.

[0018] 所述的方法,其中,还包括: [0018] The method, wherein, further comprising:

[0019] 只在指示终端访问指定资源的请求消息接收终端收到分叉处理实体发送的对事件通知消息的成功响应之后,进行指示终端访问指定资源的请求消息中指示的动作,所述动作包括发送会话发起消息。 [0019] only access the specified resource request message indicating that the terminal at a receiving terminal after receiving a successful response to treatment bifurcation event notification message sent by an entity, access terminal action instruction specifies resource request message indicated the action comprises send session initiation message.

[0020] 一种会话发起协议域协商消息接收终端的实现方法,其特征在于,其在指示终端访问指定资源的请求消息发送方和各终端之间设置一分叉处理实体,并包括:在发生并行分叉时,先使用查询请求消息依预定策略选择接收指示终端访问指定资源的请求消息的终端,再把指示终端访问指定资源的请求消息发送给选定的终端,其中,所述先使用查询请求消息依预定策略选择接收指示终端访问指定资源的请求消息的终端,包括: 所述分叉处理实体向各个终端发送查询请求消息,接收并收集各终端的响应,并根据预定策略选择接收指示终端访问指定资源的请求消息的终端。 [0020] A session initiation domain implementation protocol negotiation message receiving terminal, wherein the processing entity is provided between a bifurcated access to a specified resource request message indicating the sender terminal and each terminal, and comprising: in the event when parallel bifurcation, the first query request message by using a predetermined strategy selection receiving terminal indicates a terminal to access the specified resource request message, then instruct the terminal to access the specified resource request message to the selected terminal, wherein the first inquiry using request message indicating the terminal receiving a selection request message to access the specified resource in accordance with a predetermined policy terminal, comprising: a bifurcated processing entity sends a query request message to each terminal, each terminal receives and collects the response, and receiving a selection indicative of the terminal in accordance with a predetermined strategy terminal requesting access to a specified resource message.

[0021] 所述的方法,其中,所述分叉处理实体与指示终端访问指定资源的请求消息发送方为不同的网络实体。 [0021] The method, wherein said processing entity indicating bifurcated terminal accesses the specified resource request message sender to different network entities.

[0022] 所述的方法,其中,还包括:所述分叉处理实体同时向各个用户终端发送查询请求消息,并在该请求消息中携带查询终端能力信息的指示,查询终端支持的方法和终端当前的优先级指数的终端能力信息,各终端返回各自的响应,分叉处理实体收集各终端的响应,并把响应的终端列表通过重定向消息发给指示终端访问指定资源的请求消息发送方,由发送方选择接收指示终端访问指定资源的请求消息的终端时,所述发送方并将指示终端访问指定资源的请求消息发送给选定的终端。 [0022] The method, wherein, further comprising: a bifurcated processing entity simultaneously transmitted query request message to each user terminal, and carries the terminal capability information indicating a query in the request message, the method of inquiring terminal and the terminal support the current terminal capability information priority index, return to their response to each terminal, in response to the processing entity bifurcated collected each terminal, the terminal and the access list in response to a specified resource request message sent to the sender indicating that the terminal through the redirection message, when the terminal receives an indication selected by the sender terminal to access the specified resource request message, the sender and indicating a terminal accesses the specified resource request message to the selected terminal.

[0023] 所述的方法,其中,还包括:由所述分叉处理实体向各个终端发送查询请求消息,各终端返回各自的响应,分叉处理实体收集各终端的响应根据预定策略选择接收指示终端访问指定资源的请求消息的终端,并将指示终端访问指定资源的请求消息发送给选定的终端。 [0023] The method, wherein, further comprising: transmitting, by the processing entity bifurcated query request message to each terminal, each terminal in response to return to their furcation process responding entity receiving an indication of each terminal collected in accordance with a predetermined selection policy terminal access terminal specified resource request message, and to instruct the terminal to access the specified resource request message to the selected terminal.

[0024] 所述的方法,其中,所述分叉处理实体与指示终端访问指定资源的请求消息发送方为同一个网络实体,并包括步骤: [0024] The method, wherein said processing entity indicating bifurcated terminal accesses the specified resource request message to the sender with a network entity, and comprising the steps of:

[0025] A1、所述指示终端访问指定资源的请求消息发送方/分叉处理实体在发送指示终端访问指定资源的请求消息之前先向各个终端发送查询请求消息,各终端返回各自的响应; Before sending the [0025] A1, the access terminal indicating a specified resource request message sender / diverging processing entities to access the specified resource transmission request message indicating that the terminal Xianxiang query request message to each terminal, each terminal returns the respective responses;

[0026] B1、所述指示终端访问指定资源的请求消息发送方/分叉处理实体收集各终端的响应,根据预定策略选择接收指示终端访问指定资源的请求消息的终端,并向该终端发送指示终端访问指定资源的请求消息请求。 [0026] B1, indicating the terminal to access the specified resource request message sender / response processing entity to gather diverging each terminal, the terminal receiving a selection indicating the terminal to access the specified resource request message according to a predetermined policy, and sends an indication to the terminal terminal accesses the specified resource request message requesting. [0027] 所述的方法,其中,所述预定策略包括: [0027] The method, wherein said predetermined policy includes:

[0028] 所述分叉处理实体同时向各个用户终端发送查询请求消息,并在该请求消息中携带查询终端能力信息的指示,查询包含终端所支持的方法和终端当前的优先级指数的终端能力信息,并选择支持指示终端访问指定资源的请求消息方法和/或优先级指数较大的终端作为接收终端。 Terminal capability [0028] The processing entity bifurcated simultaneously transmitted query request message to each user terminal, and carries the terminal capability information indicating a query in the request message, the query contains the current priority index method supported by the terminal and a terminal information, and instruct the terminal to choose to support access to the resource request message specifies a method and / or a priority index greater terminal as a receiving terminal.

[0029] 所述的方法,其中,所述预定策略包括:所述分叉处理实体同时向各个终端发送查询请求消息,选择第一个成功响应的终端作为接收终端。 [0029] The method, wherein said predetermined policy includes: the entity bifurcated processing terminal simultaneously transmits a query request message to each terminal, a first selection success response as a reception terminal.

[0030] 所述的方法,其中,所述预定策略包括:所述分叉处理实体顺序向各个终端发送查询请求消息,选择第一个返回成功响应的终端作为接收终端。 [0030] The method, wherein said predetermined policy comprises: the processing entity bifurcated query request message sent sequentially to each terminal, a first terminal selection success response is returned as the receiving terminal.

[0031] 所述的方法,其中,所述查询终端能力的请求消息为OPTIONS消息。 [0031] The method, wherein the terminal capability inquiry request message to the OPTIONS message.

[0032] 所述的方法,其中,所述查询终端优先级指数和支持的方法的请求通过扩展Terminal-Info 头域携带。 Request method [0032] The method, wherein said terminal inquiry priority index and supported by extending Terminal-Info header field carries.

[0033] 所述的方法,其中,所述重定向消息是302Moved temporarily消息。 [0033] The method, wherein the redirect message is a message 302Moved temporarily.

[0034] 本发明所提供的一种会话发起协议域协商消息接收终端的实现方法,通过设置一分叉处理实体,实现了在发生并行分叉的多用户终端情况下的消除终端操作不可控的问题,实现了系统的稳定性。 [0034] A present invention provides a session initiation protocol negotiation message receiving terminal domain implementation, by providing a bifurcated processing entity realized in the terminal elimination multi-user terminal bifurcation occurs parallel operation uncontrollable issue and realize the stability of the system.

附图说明 BRIEF DESCRIPTION

[0035] 图1为现有技术的REFER流程示意图; [0035] FIG. 1 is a schematic flow diagram of the prior art REFER;

[0036] 图2为本发明方法的第一实施例的流程图; A flow chart of the first embodiment [0036] FIG. 2 of the present inventive method;

[0037] 图3为本发明方法的另一实施例的流程图; A flow diagram of another embodiment of [0037] FIG. 3 shows a method embodiment of the present invention;

[0038] 图4为本发明方法的第三实施例的流程图; [0038] FIG 4 is a flowchart of a third embodiment of the inventive method;

[0039] 图5为本发明方法的第四实施例的流程图; [0039] FIG 5 is a flowchart of a fourth embodiment of the inventive method;

[0040] 图6为本发明方法的第五实施例的流程图; [0040] FIG 6 is a flowchart of a fifth embodiment of the inventive method;

[0041] 图7为本发明方法的第六实施例的流程图。 [0041] FIG. 7 is a flowchart of a sixth embodiment of a method of the present invention.

具体实施方式 detailed description

[0042] 以下结合附图,将对本发明的各较佳实施例进行更为详细的说明。 [0042] described in more detail below in conjunction with the accompanying drawings, various preferred embodiments of the present invention will be described.

[0043] 本发明的会话发起协议域协商消息接收终端的实现方法,可以在REFER接收终端只有收到分叉处理实体发送的对NOTIFY的成功响应之后,才进行REFER中指示的动作,如发送INVITE等,而如果没有收到或收到失败响应时则不进行REFER中指示的动作。 After the [0043] domain implementation session initiation protocol negotiation message receiving terminal according to the present invention, there may be only receives a successful response to the NOTIFY bifurcated processing entity transmitted REFER receiving terminal, only indicated for REFER operation, such as sending an INVITE etc., but not REFER operation is indicated if a failure response is received or not received. 该实施例如图2所示,系统中设置一分叉处理实体,REFER发起方通过该分叉处理实体向所述终端1和终端2发送REFER消息,其步骤包括: The example embodiment shown in FIG. 2, the system is provided in a bifurcated processing entity, the initiator processing entity sending REFER REFER message to the terminal 1 and the terminal 2 through the bifurcated, comprising the steps of:

[0044] 1、REFER发起方发送REFER消息; [0044] 1, REFER REFER message sender sends;

[0045] 2〜3、接收方用户多终端且发生并行分叉,分叉处理实体向各终端同时发送REFER请求。 [0045] 2 ~, the recipient user terminal and multiple furcation occur in parallel, each processing entity bifurcated terminals simultaneously transmits REFER request.

[0046] 4〜7、终端1返回成功响应2000K,并发送一个NOTIFY消息,携带订阅的资源状态的内容信息。 [0046] 4~7, 2000K terminal 1 returns a success response, and sends a NOTIFY message, the content of information carried subscribed resource state. 终端2同样返回成功响应及NOTIFY消息。 Also the terminal 2 returns a success response and the NOTIFY message.

[0047] 8〜9、所述分叉处理实体选择接受终端1的响应和NOTIFY,并把该响应和NOTIFY发送给REFER发起方。 [0047] 8-9, the bifurcated and accepts the response processing selection entity NOTIFY terminal 1, and to send the response to the REFER, and NOTIFY initiator.

[0048] 10、分叉处理实体向终端1发送2000K。 [0048] 10, bifurcated processing entity to the terminal 1 transmits 2000K.

[0049] 11、分叉处理实体向终端2发送400BadRequest,取消向该终端的订阅和REFER请求。 [0049] 11, bifurcated 400BadRequest processing entity transmits to the terminal 2, to cancel the subscription of the terminal and the REFER request.

[0050] 12、终端1收到分叉处理实体发送的2000K响应后,进行REFER中指示的动作,如发送INVITE消息。 [0050] 12, the terminal 1 after receiving 2000K in response to the transmission processing entity bifurcated, operates REFER indicated, such as sending an INVITE message.

[0051] 本发明方法在发生并行分叉时,还可以先使用其他请求消息,如OPTIONS消息,选择接收REFER请求的终端,之后再把REFER消息发送给选中的终端。 [0051] The method of the present invention, when parallel bifurcation occurs, may also be used to request additional information, such as OPTIONS message, the selected terminal receives the REFER request, then after the REFER message sent to the selected terminal. 该实施例方案中包括两种情况,一是分叉处理实体与REFER发送方为不同的网络实体,二是分叉处理实体与REFER发送方为同一个网络实体。 This embodiment comprises the embodiment two cases, one with a forked REFER sender processing entity for different network entities, and the second is bifurcated REFER sender processing entity to the same network entity.

[0052] 可以理解的是,本发明方法的技术构思中,REFER消息只是指示访问指定资源的请求消息的一个实施例而已,本领域技术人员显然可以采用其他相关的消息来实现该功能。 [0052] It will be appreciated that the technical idea of ​​the method of the present invention, but the REFER message indicates a request message to access a specified resource to one embodiment only, will be apparent to those skilled in the art to use other messages related to implement this feature.

[0053] 对于情况一,本发明方法是分叉处理实体在接收REFER消息时,判断接收方多终端且会发生并行分叉,则分叉处理实体向各个终端发送请求消息,各终端返回各自的响应,分叉处理实体收集各终端的响应,根据某种策略选择接收REFER消息的终端;也可以把响应的终端列表通过重定向消息发给REFER发送方,由发送方选择接收REFER消息的终端。 [0053] In the case of a method of the present invention is a bifurcated processing entity upon receiving a REFER message, the receiver determines a multi-terminal and in parallel bifurcation occurs, the bifurcated processing entity sending a request message to each terminal, each terminal returns to the respective in response, the response collection processing entity bifurcated each terminal, according to some selection policy received REFER message terminal; may be sent to the terminal in response to the list of REFER message sender by redirection, the terminal receives the REFER message is selected by the sender.

[0054] 所述分叉处理实体向各终端发送请求消息并选择接收终端可以采用三种方式: 一是分叉处理实体同时向各个终端发送请求消息,请求消息中携带查询终端信息的指示,查询终端支持的方法和终端当前的优先级指数等终端能力信息,根据某种策略例如选择支持REFER方法和/或优先级指数较大的终端作为接收终端;二是分叉处理实体同时向各个终端发送请求消息,选择第一个成功响应的终端作为接收终端;三是所述分叉处理实体顺序向各个终端发送请求消息,第一个返回成功响应的终端作为接收终端。 [0054] The bifurcated processing entity each terminal sends a request message and selects the reception terminal can be used in three ways: First, the processing entity bifurcation simultaneously send a request message to each terminal, indicating an inquiry message carries request information of the terminal, the query the method and terminal for terminal supports the priority index of the current terminal capability information, for example, according to some policy support REFER method selection and / or a priority index greater terminal as a receiving terminal; second bifurcated processing entity simultaneously transmitted to each terminal request message, to select a first terminal as a receiving terminal in response to successful; Third order of the bifurcated processing entity sending a request message to each terminal, a first terminal receiving a success response is returned as a terminal.

[0055] 具体的说,所述分叉处理实体同时向各个终端发送OPTIONS即能力查询请求,查询终端支持的方法和终端当前的优先级指数,并根据终端返回结果直接选择支持REFER方法且优先级指数较大的终端做为接收REFER消息的终端。 [0055] Specifically, the bifurcated processing entity OPTIONS i.e. simultaneously transmitted to each terminal capability inquiry request, the priority index of the current query and methods supported by the terminal end, and directly select the terminal support REFER method returns the result and the priority index larger terminal as the terminal receives the REFER message.

[0056] 该实施例的流程如图3所示,其包括步骤: [0056] Example embodiment of the process shown in Figure 3, comprising the steps of:

[0057] 1、REFER发起方发送REFER消息,消息中携带是否需要分叉处理实体查询终端能力信息的标识。 [0057] 1, REFER REFER message sender sends the message carrying the identification process whether bifurcated terminal capability information query entity. 分叉处理实体是否查询终端能力指示通过扩展头域Fork-query或扩展Request-Disposition头域的参数fork-query携带,fork-query参数值为TRUE时表示需要分叉处理实体查询终端能力信息。 Bifurcated terminal capability inquiry whether the processing entity header field indicates the spreading or expansion Fork-query Request-Disposition header field carrying the fork-query parameters, fork-query parameter indicates the need to query the terminal capability bifurcated processing entity information is TRUE. REFER消息携带的相关参数如下: REFER message carries the following parameters:

[0058] REFER : sip:mike@example.com [0058] REFER: sip: mike@example.com

[0059] Request-Disposition : fork-directive = fork ; fork-query = True 或 [0059] Request-Disposition: fork-directive = fork; fork-query = True or

[0060] REFER : sip:mike@example.com [0060] REFER: sip: mike@example.com

[0061] Fork-query : fork-query = True [0061] Fork-query: fork-query = True

[0062] 2、分叉处理实体向终端1发送OPTIONS请求,查询终端能力信息。 [0062] 2, bifurcated processing entity transmits OPTIONS request to the terminal 1, the terminal capability information query. 查询的信息包括终端支持的终端支持的方法、终端的优先级指数(q值)。 Priority index information query comprises a terminal supporting a method supported by the terminal, the terminal (q value). OPTIONS消息中携带扩展的Terminal-Info头域,用来标识请求终端的优先级指数(q-value = true)。 OPTIONS message carries extended Terminal-Info header field to identify the priority index requesting terminal (q-value = true). [0063] OPTIONS消息携带的相关参数示例如下: [0063] The exemplary OPTIONS message carries the parameters as follows:

[0064] Terminal-Info : q-value = true [0064] Terminal-Info: q-value = true

[0065] 3、分叉处理实体向终端2发送OPTIONS请求,查询其终端能力信息,消息示例同步骤2。 [0065] 3, bifurcated processing entity transmits OPTIONS request to the terminal 2, its terminal capability information query message with the example 2 step.

[0066] 4、终端1返回2000K,携带终端1的信息,包括终端支持的REFER等方法、 终端的联系地址mike@pcl.example.com和当前的优先级指数(q值)0.5。 [0066] 4, the terminal 1 returns to 2000K, portable information terminals 1, comprising a terminal support REFER the like, and the terminal contact address mike@pcl.example.com current priority index (q value) 0.5.

[0067] 2000K消息中携带的相关参数示例如下: [0067] Example 2000K parameters carried in the message as follows:

[0068] Contact : mike@pcl.example.com ; q = 0.5 [0068] Contact: mike@pcl.example.com; q = 0.5

[0069] Allow : REFER, INVITE, OPTIONS, BYE, CANCEL [0069] Allow: REFER, INVITE, OPTIONS, BYE, CANCEL

[0070] 5、终端2返回2000K,携带终端2的信息,包括终端支持的REFER等方法、 终端的联系地址mike@pc2.example.com和当前的优先级指数(q值)0.3。 [0070] 5, the terminal 2 returns 2000K, portable information terminals 2, comprising a terminal support REFER the like, and the terminal contact address mike@pc2.example.com current priority index (q value) 0.3.

[0071] 2000K消息中携带的相关参数示例如下: [0071] Example 2000K parameters carried in the message as follows:

[0072] Contact : mike@pc2.example.com ; q = 0.3 [0072] Contact: mike@pc2.example.com; q = 0.3

[0073] Allow : REFER, INVITE, OPTIONS, BYE, CANCEL [0073] Allow: REFER, INVITE, OPTIONS, BYE, CANCEL

[0074] 6、分叉处理实体选择支持REFER方法、优先级指数大的终端1作为接收REFER消息的终端,把REFER消息发给该终端。 [0074] 6, bifurcated support REFER processing entity selection method, a priority index greater terminal 1 as a terminal receives the REFER message, the REFER message to the terminal. REFER消息中的Request URI填写的是终端1的联系地址,相关参数示例如下: REFER message to fill in the Request URI is a terminal contact address 1, an example of parameters are as follows:

[0075] REFER : sip:mike@pcl.example.com [0075] REFER: sip: mike@pcl.example.com

[0076] 终端1接收REFER消息之后的处理与现有技术相同,在此不再详细描述。 Processing similar to the conventional [0076] After the terminal receives a REFER message techniques, not described in detail herein.

[0077] 本发明方法的第二种方式中,所述分叉处理实体同时向各个终端发送OPTIONS 查询请求,选择第一个成功响应的终端做为接收REFER消息的终端,具体实施步骤见图4所示,包括步骤: [0077] A second embodiment of the method of the present invention, the bifurcated OPTIONS processing entity simultaneously transmitted query request to each terminal, the terminal selecting the first terminal receives the success response as a REFER message, the particular embodiment shown in Figure 4 Step shown, comprising the steps of:

[0078] 1、REFER发起方发送REFER消息。 [0078] 1, REFER REFER message sender sends.

[0079] 2〜3、分叉处理实体向终端1、终端2同时发送OPTIONS请求。 [0079] 2 ~, 1 bifurcated processing entity, while the terminal 2 transmits the OPTIONS request to the terminal.

[0080] 4、终端1返回2000K,并携带终端的联系地址mike@pcl.example.com。 [0080] 4, the terminal 1 returns to 2000K, and carry contact addresses mike@pcl.example.com terminal.

[0081] 2000K消息中携带的相关参数示例如下: [0081] Example 2000K parameters carried in the message as follows:

[0082] Contact : mike@pcl.example.com [0082] Contact: mike@pcl.example.com

[0083] 5、终端2返回2000K,并携带终端的联系地址mike@pc2.example.com。 [0083] 5, the terminal 2 returns 2000K, and carry contact addresses mike@pc2.example.com terminal.

[0084] 2000K消息中携带的相关参数示例如下: [0084] Example 2000K parameters carried in the message as follows:

[0085] Contact : mike@pc2.example.com [0085] Contact: mike@pc2.example.com

[0086] 6、分叉处理实体因为首先收到终端1的反馈,把终端1作为接收REFER消息的终端,把REFER消息发给该终端。 [0086] 6, since the first bifurcated processing entity receives the feedback terminal 1, the terminal 1 as a terminal receives a REFER message, the REFER message to the terminal. REFER消息中的RequestURI填写的是终端1的联系地址,相关参数示例如下: REFER message is filled in RequestURI terminal contact address 1, an example of parameters are as follows:

[0087] REFER : sip:mike@pcl.example.com [0087] REFER: sip: mike@pcl.example.com

[0088] 本发明方法的第三种方式是,分叉处理实体顺序向各个终端发送查询请求,第一个返回成功响应的终端作为接收终端,分叉处理实体直接发REFER消息发送给该终端。 [0088] A third embodiment of the method of the present invention, the processing order of the entities bifurcated sends a query to each terminal, a first terminal receiving a success response is returned as a terminal bifurcated processing entity transmits a REFER message sent directly to the terminal. 该具体实施步骤参见如图5所示: DETAILED DESCRIPTION Referring to the step shown in Figure 5:

[0089] 1、REFER发起方发送REFER消息。 [0089] 1, REFER REFER message sender sends.

[0090] 2、分叉处理实体向终端1发送OPTIONS请求。 [0090] 2, bifurcated processing entity to request the terminal 1 transmits OPTIONS. [0091] 3、终端1返回2000K,并携带终端的联系地址mike@pcl.example.com。 [0091] 3, the terminal 1 returns to 2000K, and carry contact addresses mike@pcl.example.com terminal.

[0092] 2000K消息中携带的相关参数示例如下: [0092] Example 2000K parameters carried in the message as follows:

[0093] Contact : mike@pcl.example.com [0093] Contact: mike@pcl.example.com

[0094] 4、分叉处理实体继续向终端2发送OPTIONS请求。 [0094] 4, forked continuation request processing entity to the terminal 2 transmits OPTIONS.

[0095] 5、终端2返回2000K,并携带终端的联系地址mike@pc2.example.com。 [0095] 5, the terminal 2 returns 2000K, and carry contact addresses mike@pc2.example.com terminal.

[0096] 2000K消息中携带的相关参数示例如下: [0096] Example 2000K parameters carried in the message as follows:

[0097] Contact : mike@pc2.example.com [0097] Contact: mike@pc2.example.com

[0098] 6、分叉处理实体因为终端1成功响应,所以把终端1作为接收REFER消息的终端,把REFER消息发给该终端。 [0098] 6, the terminal 1 as processing entity bifurcated success response, the terminal 1 as the terminal receives the REFER message, the REFER message to the terminal. REFER消息中的RequestURI填写的是终端1的联系地址,相关参数示例如下: REFER message is filled in RequestURI terminal contact address 1, an example of parameters are as follows:

[0099] REFER : sip:mike@pcl.example.com [0099] REFER: sip: mike@pcl.example.com

[0100] 本发明方法还可以使分叉处理实体同时或顺序向各个终端发送OPTIONS请求, 根据某种策略收集终端响应的结果,例如启动一定时器,在定时器超时前响应的终端做为接收REFER消息的终端,并将响应终端列表通过重定向消息发给REFER发送方,由发送方选择接收REFER消息的终端,该具体实施方式如图6所示包括步骤: [0100] The present invention also allows the processing entity bifurcated simultaneously or sequentially transmits the OPTIONS request to each terminal, the terminal according to the results collected in response to some policy, such as starting a timer, the timer expires before receiving a response to the terminal as REFER message to the terminal, and sends the response message to the terminal list by redirecting REFER sender terminal receives the REFER message selected by the sender, the particular embodiment shown in Figure 6 comprising the steps of:

[0101] 1、所述REFER发起方发送REFER消息,消息中携带是否需要分叉处理实体查询终端能力信息的标识;分叉处理实体是否查询终端能力指示通过扩展头域Fork-query 或扩展Request-Disposition头域的参数fork-query携带,fork-query参数值为TRUE表示需要分叉处理实体查询终端能力信息。 [0101] 1, the sender sends the REFER REFER message, whether the message carries a bifurcated terminal capability inquiry processing entity identification information; bifurcated terminal capability inquiry whether the processing entity header field indicates the spreading or expansion Fork-query Request- Disposition header field carrying the fork-query parameters, fork-query parameter is TRUE indicates bifurcated required terminal capability information query processing entity. REFER消息携带的相关参数如下: REFER message carries the following parameters:

[0102] REFER : sip:mike@example.com [0102] REFER: sip: mike@example.com

[0103] Request-Disposition : fork-directive = fork ; fork-query = True 或 [0103] Request-Disposition: fork-directive = fork; fork-query = True or

[0104] REFER : sip:mike@example.com [0104] REFER: sip: mike@example.com

[0105] Fork-query : fork-query = True [0105] Fork-query: fork-query = True

[0106] 2、所述分叉处理实体向终端1发送OPTIONS请求,查询终端信息。 [0106] 2, the bifurcated processing entity transmits an OPTIONS request to the terminal, the terminal information inquiry. 查询的信息包括终端支持的终端支持的方法、终端的优先级指数(q值)。 Priority index information query comprises a terminal supporting a method supported by the terminal, the terminal (q value). OPTIONS消息中携带扩展的Terminal-Info头域,用来标识请求终端的优先级指数(q-value = true)。 OPTIONS message carries extended Terminal-Info header field to identify the priority index requesting terminal (q-value = true).

[0107] OPTIONS消息携带的相关参数示例如下: [0107] exemplary OPTIONS message carries the parameters as follows:

[0108] Terminal-Info : q-value = true [0108] Terminal-Info: q-value = true

[0109] 3、分叉处理实体向终端2发送OPTIONS请求,查询终端能力信息。 [0109] 3, bifurcated processing entity transmits OPTIONS request to the terminal 2, the terminal capability information query. 消息示例同步骤2。 Example 2 Step same message.

[0110] 4、终端1返回2000K,携带终端1的信息,包括终端支持的REFER等方法、 终端的联系地址mike@pcl.example.com和当前的优先级指数(q值)0.5。 [0110] 4, the terminal 1 returns to 2000K, portable information terminals 1, comprising a terminal support REFER the like, and the terminal contact address mike@pcl.example.com current priority index (q value) 0.5.

[0111] 2000K消息中携带的相关参数示例如下: [0111] Example 2000K parameters carried in the message as follows:

[0112] Contact : mike@pcl.example.com ; q = 0.5 [0112] Contact: mike@pcl.example.com; q = 0.5

[0113] Allow : REFER, INVITE, OPTIONS, BYE, CANCEL [0113] Allow: REFER, INVITE, OPTIONS, BYE, CANCEL

[0114] 5、终端2返回2000K,携带终端2的信息,包括终端支持的REFER等方法、 终端的联系地址mike@pc2.example.com和当前的优先级指数(q值)0.3。 [0114] 5, the terminal 2 returns 2000K, portable information terminals 2, comprising a terminal support REFER the like, and the terminal contact address mike@pc2.example.com current priority index (q value) 0.3.

[0115] 2000K消息中携带的相关参数示例如下: [0115] Example 2000K parameters carried in the message as follows:

[0116] Contact : mike@pc2.example.com ; q = 0.3[0117] Allow : REFER, INVITE, OPTIONS, BYE, CANCEL [0116] Contact: mike@pc2.example.com; q = 0.3 [0117] Allow: REFER, INVITE, OPTIONS, BYE, CANCEL

[0118] 6、分叉处理实体把各终端返回的终端能力信息,通过302重定向消息发给REFER发送方,由REFER发送方选择接收REFER消息的终端。 [0118] 6, forked processing terminal capability information of each terminal returns the entity, the REFER sent by the sender 302 redirect message, the receiving terminal selected by the REFER REFER message sender. 各终端能力信息在302 消息中的Contact头域列表中携带。 Carrying the terminal capability information of each list in the Contact header field 302 of the message. 302消息中的相关内容示例如下: The message content 302 the following example:

[0119] Contact : <sip:mike@pcl.example.com> ; q = 0.5 ; expires = 3600 [0119] Contact: <sip: mike@pcl.example.com>; q = 0.5; expires = 3600

[0120] <sip:mike@pc2.example.com> ; q = 0.3 ; expires = 3600 [0120] <sip: mike@pc2.example.com>; q = 0.3; expires = 3600

[0121] 7、REFER发送方根据收到的接收方终端信息,选择终端1做为接收REFER消息的终端。 [0121] 7, REFER according to the recipient side terminal transmits the received information, selecting a terminal as a terminal receives a REFER message. 并把REFER消息直接发给该终端。 And the REFER message directly to the terminal. 在REFER消息的RequestURI中除了携带接收方的公有用户标识,还通过扩展的contact-addr参数携带终端1的联系地址,分叉处理实体收到REFER消息后,检查联系地址的合法性,之后把REFER消息直接发给终端1。 In addition to the Request-URI of the REFER message carries a recipient's public user identity, also carrying the contact address of the terminal 1 through the extended contact-addr parameter, the legitimacy of the bifurcated processing entity receives REFER message, check the contact address after the REFER a message directly to the terminal.

[0122] REFER : sip:mike@.example.com ; contact—addr =” [0122] REFER: sip: mike @ .example.com; contact-addr = "

[0123] mike@pcl.example.com” [0123] mike@pcl.example.com "

[0124] 对于情况二分叉处理实体与REFER发送方为同一个网络实体时,本发明方法通过REFER发起方/分叉处理实体判断接收方多终端且会发生并行分叉,则在发送REFER 之前先向各个终端发送终端能力查询消息,各终端返回各自的响应。 Before [0124] In the case of the bifurcated REFER sender processing entity is the same network entity, the method of the present invention by REFER originator / recipient bifurcated processing entity determines multiple terminals and in parallel bifurcation occurs, then the transmission REFER Xianxiang each terminal sends a terminal capability inquiry message, in response to return to their respective terminals. REFER发起方/分叉处理实体分叉处理实体收集各终端的响应,根据某种策略选择接收REFER消息的终端,然后向该终端发送REFER请求。 REFER initiator / diverging bifurcated processing entity processes the response of each terminal collection entity, according to some strategy selection terminal receiving REFER message, and then transmits REFER request to the terminal.

[0125] 与情况一类似,分叉处理实体向各终端发送请求消息并选择接收终端也可以有三种方式,方式一是分叉处理实体同时向各个终端发送请求消息,请求消息中携带查询终端信息的指示,查询终端支持的方法和终端当前的优先级指数等终端能力信息,根据某种策略选择支持REFER方法和/或优先级指数较大的终端作为接收终端;方式二是分叉处理实体同时向各个终端发送请求消息,选择第一个响应的终端作为接收终端;方式三是分叉处理实体顺序向各个终端发送请求消息,第一个返回成功响应的终端作为接收终端。 [0125] Similarly to the case of a bifurcated processing entity and each terminal sends a request message receiving terminal may select three ways, one way forked processing entity simultaneously send a request message to each terminal, terminal information inquiry request message carries the indication, the terminal capability information query terminal support and a terminal of the current methods of like priority index, according to some policy support REFER method selection and / or priority index greater terminal as a receiving terminal; Second embodiment bifurcated processing entity simultaneously sending a request message to each terminal, in response to a select terminal of a first receiving terminal; Third embodiment bifurcated order processing entity sends a request message to each terminal, a first terminal receiving a success response is returned as a terminal. 如图7所示给出方式一的实施流程,其他两种方式的实施流程可以参考方式一的实施例以及情况一中的对应实施例得到,在此不再赘述。 Given by way of an embodiment shown in Figure 7 process, the process embodiment with reference to the other two methods may be a way of embodiment examples and obtained in an embodiment corresponding to the case, are not repeated here.

[0126] 图7所示的步骤包括: Step shown in [0126] Figure 7 comprising:

[0127] 1、分叉处理实体向终端1发送OPTIONS请求,查询终端信息。 [0127] 1, 1 bifurcated processing entity transmits OPTIONS request to the terminal, the terminal information inquiry. 查询的信息包括终端支持的终端支持的方法、终端的优先级指数(q值)。 Priority index information query comprises a terminal supporting a method supported by the terminal, the terminal (q value). OPTIONS消息中携带扩展的Terminal-Info头域,用来标识请求终端的优先级指数(q-value = true)。 OPTIONS message carries extended Terminal-Info header field to identify the priority index requesting terminal (q-value = true).

[0128] OPTIONS消息携带的相关参数示例如下: [0128] exemplary OPTIONS message carries the parameters as follows:

[0129] Terminal-Info : q-value = true [0129] Terminal-Info: q-value = true

[0130] 2、分叉处理实体向终端2发送OPTIONS请求,查询终端能力信息。 [0130] 2, 2 bifurcated processing entity transmits OPTIONS request to the terminal, terminal capability information query. 消息示例同步骤2。 Example 2 Step same message.

[0131] 3、终端1返回2000K,携带终端1的信息,包括终端支持的REFER等方法、 终端的联系地址mike@pcl.example.com和当前的优先级指数(q值)0.5。 [0131] 3, the terminal 1 returns to 2000K, portable information terminals 1, comprising a terminal support REFER the like, and the terminal contact address mike@pcl.example.com current priority index (q value) 0.5.

[0132] 2000K消息中携带的相关参数示例如下: [0132] Example 2000K parameters carried in the message as follows:

[0133] Contact : mike@pcl.example.com; q = 0.5 [0133] Contact: mike@pcl.example.com; q = 0.5

[0134] Allow : REFER, INVITE, OPTIONS, BYE, CANCEL[0135] 4、终端2返回2000K,携带终端2的信息,包括终端支持的REFER等方法、 终端的联系地址mike@pc2.example.com和当前的优先级指数(q值)0.3。 [0134] Allow: REFER, INVITE, OPTIONS, BYE, CANCEL [0135] 4, the terminal 2 returns 2000K, portable information terminals 2, includes a contact address of a terminal support REFER the like, and a terminal mike@pc2.example.com the current priority index (q value) 0.3.

[0136] 2000K消息中携带的相关参数示例如下: [0136] Example 2000K parameters carried in the message as follows:

[0137] Contact : mike@pc2.example.com ; q = 0.3 [0137] Contact: mike@pc2.example.com; q = 0.3

[0138] Allow : REFER, INVITE, OPTIONS, BYE, CANCEL [0138] Allow: REFER, INVITE, OPTIONS, BYE, CANCEL

[0139] 5、分叉处理实体选择支持REFER方法、优先级指数大的终端1作为接收REFER消息的终端,把REFER消息发给该终端。 [0139] 5, a bifurcated support REFER processing entity selection method, a priority index greater terminal 1 as a terminal receives the REFER message, the REFER message to the terminal. REFER消息中的Request URI填写的是终端1的联系地址,相关参数示例如下: REFER message to fill in the Request URI is a terminal contact address 1, an example of parameters are as follows:

[0140] REFER : sip:mike@pcl.example.com [0140] REFER: sip: mike@pcl.example.com

[0141] 综上,可以看出,虽然本发明的各实施例给出的是REFER发生并行分叉的应用场景,但是如前所分析,本发明技术方案的关键点之一就是分叉处理实体在发生分叉时可以先通过向各终端发送查询终端信息的请求获得各用户终端的能力信息,之后由分叉处理实体或由最初的请求消息发起方选择接收请求消息的终端,然后把最初的请求消息发送给指定终端。 [0141] In summary, it can be seen, although the examples given in each embodiment of the present invention is the use scenario occurs REFER bifurcated parallel, but as previously analyzed, one key aspect of the present invention is the processing entity bifurcation can occur when bifurcated by each terminal to send a query request to obtain capability information of the terminal information of each user terminal, after processing by the entity or to select a terminal bifurcated receiving a request message from the initial request message originator, then the initial request message to the specified terminal.

[0142] 可以理解的是,对本发明领域的普通技术人员来说,本发明方法所给出的协商请求消息接收终端的方法可以但不仅上述实施例的说明,无须创造性劳动的改变或替换,都应属于本发明所附权利要求的保护范围。 [0142] It will be appreciated that one of ordinary skill in the art of the present invention, the negotiation process of the present invention, the method given in the request message receiving terminal may be, but is not described in the above-described embodiments without creative labor changed or replaced, have It should fall within the scope of the appended claims of the invention.

Claims (13)

  1. 1. 一种会话发起协议域协商消息接收终端的实现方法,其设置一分叉处理实体在指示终端访问指定资源的请求消息发起方和各终端之间,并包括步骤:A、指示终端访问指定资源的请求消息发起方发送指示终端访问指定资源的请求消息;B、接收方为多用户终端且发生并行分叉,所述分叉处理实体向各终端发送指示终端访问指定资源的请求消息请求;C、所述分叉处理实体收集各用户终端的响应,根据预定策略由所述分叉处理实体选择接收指示终端访问指定资源的请求消息的终端,向所述选定的终端发送事件通知消息的成功响应,指示所述选定的终端进行所述指示终端访问指定资源的请求消息中所指示的动作。 1. A Method session initiation message receiving terminal domain negotiation protocol which is provided between a bifurcation process entities to access the resource specified in the request message indicating that the terminal and each terminal initiator, and comprising the steps of: A, indicating the terminal access to the specified resource request message indicating that the terminal of the sender sends the access request message specifies the resource; B, the recipient is a multi-user terminal and in parallel bifurcation occurs, the bifurcated processing entity each terminal transmits the access request message indicating that the terminal specified resource request; C, the bifurcated collection processing entity in response to each user terminal, selected by the entity in accordance with a predetermined processing strategy bifurcated receiving terminal indicates a terminal to access the specified resource request message, to the selected terminal transmits the event notification message success response, indicating that the selected operation terminal indicating the terminal to access the specified resource indicated in the request message.
  2. 2.根据权利要求1所述的方法,其特征在于,还包括:只在指示终端访问指定资源的请求消息接收终端收到分叉处理实体发送的对事件通知消息的成功响应之后,进行指示终端访问指定资源的请求消息中指示的动作,所述动作包括发送会话发起消息。 The method according to claim 1, characterized in that, further comprising: accessing only the specified resource request message indicating that the terminal at a receiving terminal after receiving a successful response to treatment bifurcation event notification message sent by an entity, instructing the terminal an act of accessing a specified resource request message indication, the action comprises sending a session initiation message.
  3. 3.—种会话发起协议域协商消息接收终端的实现方法,其特征在于,其在指示终端访问指定资源的请求消息发送方和各终端之间设置一分叉处理实体,并包括:在发生并行分叉时,先使用查询请求消息依预定策略选择接收指示终端访问指定资源的请求消息的终端,再把指示终端访问指定资源的请求消息发送给选定的终端,其中,所述先使用查询请求消息依预定策略选择接收指示终端访问指定资源的请求消息的终端,包括:所述分叉处理实体向各个终端发送查询请求消息,接收并收集各终端的响应,并根据预定策略选择接收指示终端访问指定资源的请求消息的终端。 3.- implemented method of session initiation species domain protocol negotiation message receiving terminal, wherein the processing entity is provided between a bifurcated access to a specified resource request message indicating the sender terminal and each terminal, and comprising: in the event of parallel bifurcation, the first query request message by using a predetermined strategy selection receiving terminal indicates a terminal to access the specified resource request message, then the access request message indicating that the terminal specified resource is sent to the selected terminal, wherein said query request to use receiving a selection message indicating that the terminal specified by the predetermined resource access policy request message to the terminal, comprising: a bifurcated processing entity sends a query request message to each terminal, each terminal receives and collects the response, and instructs the access terminal in accordance with a predetermined policy choose to receive terminal specified resource request message.
  4. 4.根据权利要求3所述的方法,其特征在于,所述分叉处理实体与指示终端访问指定资源的请求消息发送方为不同的网络实体。 4. The method according to claim 3, wherein said bifurcated processing entity indicating the terminal to access the specified resource request message sender to different network entities.
  5. 5.根据权利要求4所述的方法,其特征在于,还包括:所述分叉处理实体同时向各个用户终端发送查询请求消息,并在该请求消息中携带查询终端能力信息的指示,查询终端支持的方法和终端当前的优先级指数的终端能力信息,各终端返回各自的响应,分叉处理实体收集各终端的响应,并把响应的终端列表通过重定向消息发给指示终端访问指定资源的请求消息发送方,由发送方选择接收指示终端访问指定资源的请求消息的终端,所述发送方并将指示终端访问指定资源的请求消息发送给选定的终端。 The method according to claim 4, characterized in that, further comprising: a bifurcated processing entity simultaneously transmitted query request message to each user terminal, and carries a terminal capability information indicating a query in the request message, the query terminal a method and a terminal support of the terminal capability information of the current priority index, return to their response to each terminal, in response to the processing entity were collected bifurcated terminal and sent to the terminal list response indicating that the terminal specified by the redirection message to access the resource request message sender, the terminal receives an indication to select the access terminal by the sender specified resource request message, the sender and the message indicating that the terminal specified resource access request sent to the selected terminal.
  6. 6.根据权利要求4所述的方法,其特征在于,还包括:由所述分叉处理实体向各个终端发送查询请求消息,各终端返回各自的响应,分叉处理实体收集各终端的响应根据预定策略选择接收指示终端访问指定资源的请求消息的终端,并将指示终端访问指定资源的请求消息发送给选定的终端。 6. The method according to claim 4, characterized in that, further comprising: transmitting, by the processing entity bifurcated query request message to each terminal, each terminal in response to return to their furcation processing entity each terminal according to collect responses strategies predetermined terminal receiving an indication terminal accesses the specified resource request message, and instruct the terminal to access the specified resource request message to the selected terminal.
  7. 7.根据权利要求3所述的方法,其特征在于,所述分叉处理实体与指示终端访问指定资源的请求消息发送方为同一个网络实体,并包括步骤:Al、所述指示终端访问指定资源的请求消息发送方/分叉处理实体在发送指示终端访问指定资源的请求消息之前先向各个终端发送查询请求消息,各终端返回各自的响应;Bi、所述指示终端访问指定资源的请求消息发送方/分叉处理实体收集各终端的响应,根据预定策略选择接收指示终端访问指定资源的请求消息的终端,并向该终端发送指示终端访问指定资源的请求消息请求。 7. The method according to claim 3, wherein said processing entity indicating bifurcated terminal accesses the specified resource request message to the sender with a network entity, and comprising the steps of: Al, the designated access terminal indicating resource request message sender / diverging send request message processing entity Xianxiang respective terminals before sending a request message indicating the specified resource access terminal, each terminal returns the respective responses; of Bi, the indication terminal accesses the specified resource request message sender / response processing entity to gather diverging each terminal, the terminal specify the predetermined resource request message indicating the terminal access receiving a selection policy in accordance with, and sends access request message indicating that the terminal specified resource request to the terminal.
  8. 8.根据权利要求6或7所述的方法,其特征在于,所述预定策略包括:所述分叉处理实体同时向各个用户终端发送查询请求消息,并在该请求消息中携带查询终端能力信息的指示,查询包含终端所支持的方法和终端当前的优先级指数的终端能力信息,并选择支持指示终端访问指定资源的请求消息方法和/或优先级指数较大的终端作为接收终端。 8. The method of claim 6 or claim 7, wherein said predetermined policy comprises: the processing entity bifurcated simultaneously transmitted query request message to each user terminal, and carries the terminal capability information included in the query request message indication, the terminal capability information query contains the priority index of the current terminal and a terminal support method, and instruct the terminal to choose to support access to the resource request message specifies a method and / or a priority index greater terminal as a receiving terminal.
  9. 9.根据权利要求6或7所述的方法,其特征在于,所述预定策略包括:所述分叉处理实体同时向各个终端发送查询请求消息,选择第一个成功响应的终端作为接收终端。 9. The method of claim 6 or claim 7, wherein said predetermined policy includes: the entity bifurcated processing terminal simultaneously transmits a query request message to each terminal, a first selection success response as a reception terminal.
  10. 10.根据权利要求6或7所述的方法,其特征在于,所述预定策略包括:所述分叉处理实体顺序向各个终端发送查询请求消息,选择第一个返回成功响应的终端作为接收终端。 10. The method of claim 6 or claim 7, wherein said predetermined policy comprises: the processing entity bifurcated query request message sent sequentially to each terminal, to select a first terminal returns a success response as a reception terminal .
  11. 11.根据权利要求5、6或7所述的方法,其特征在于,所述查询请求消息为OPTIONS消息。 11. The method of claim 6 or claim 7, wherein the inquiry request message is OPTIONS message.
  12. 12.根据权利要求8所述的方法,其特征在于,所述查询终端优先级指数和支持的方法的请求通过扩展Terminal-Info头域携带。 12. The method according to claim 8, wherein said query request method, and the terminal priority index by extending support carrying Terminal-Info header field.
  13. 13.根据权利要求5所述的方法,其特征在于,所述重定向消息是302MOVed temporarily 消息。 13. The method as claimed in claim 5, wherein the redirect message is a message 302MOVed temporarily.
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