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    • 3. 发明申请
    • METHOD OF SESSION PROCESSING IN AN IMS AND INTERROGATING-CALL STATE CONTROL FUNCTION
    • IMS中的会话处理方法和调用状态控制功能
    • US20080160996A1
    • 2008-07-03
    • US12040571
    • 2008-02-29
    • Changlin LIFenqin ZHUJianguo ZHAOJing WANGXiaoyan HE
    • Changlin LIFenqin ZHUJianguo ZHAOJing WANGXiaoyan HE
    • H04Q7/20
    • H04L65/1016H04L41/12
    • A method of session processing in the Internet Protocol (IP) Multimedia Subsystem (IMS) comprises: Interrogating-Call State Control Function (I-CSCF) accessing the Home Subscriber Server (HSS) to query the registration location of the called user, the I-CSCF sending the Session Initiation Protocol (SIP) request to the Serving-Call State Control Function (S-CSCF) based on the response of the HSS; when the response time of the S-CSCF to the SIP request sent from the I-CSCF has expired, the I-CSCF re-selecting the S-CSCF, and sending the SIP request to the S-CSCF. And an Interrogating-Call State Control Function is provided. According to the present invention, if the S-CSCF returned by the HSS to process the unregistered service of the IMS user does not responded because of the device failure or communication interruption or the like, the I-CSCF can re-select other S-CSCF to process the unregistered service of the IMS user, so as to improve the quality of service and to increase the satisfaction of user.
    • 互联网协议(IP)多媒体子系统(IMS)中的会话处理方法包括:询问 - 呼叫状态控制功能(I-CSCF),访问本地用户服务器(HSS)以查询被叫用户的注册位置,I -CSCF基于HSS的响应向服务呼叫状态控制功能(S-CSCF)发送会话发起协议(SIP)请求; 当S-CSCF对从I-CSCF发送的SIP请求的响应时间到期时,I-CSCF重新选择S-CSCF,并向SIP-CSCF发送SIP请求。 并提供询问电话状态控制功能。 根据本发明,如果由于设备故障或通信中断等而由HSS返回的用于处理IMS用户的未注册服务的S-CSCF没有响应,则I-CSCF可以重新选择其他S- CSCF处理IMS用户的未注册服务,从而提高服务质量并提高用户满意度。