Ringing state domain switching method and device
A technology of domain switching and ringing state, which is applied in the domain switching method and device field of ringing state, and can solve the problems that the domain switching process cannot be completed, and the UPDATE message cannot update the remote end, etc.
Active Publication Date: 2011-07-20
NANJING ZHONGXING XIN SOFTWARE CO LTD
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[0076] However, for the above ringing state domain switching process, whether it is the calling mode or the called mode, it is necessary to ensure that the session request / response (offer / answer) negotiation is successful before switching, otherwise the SCC AS receives the ringing state domain switching process. When requested, the UPDATE message cannot be used to update the remote end, so the domain switching process cannot be completed
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[0097] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0098] image 3 It is a flowchart of a method for switching ringing state domains according to an embodiment of the present invention, such as image 3 As shown, in the ringing state domain switching process between the calling party and the called party, the method mainly includes the following steps:
[0099] Step S302, the SCC AS receives a session handover request from the MSC;
[0100]In a preferred embodiment of the present invention, when the calling party initiates a call request to the called party, no matter whether the called party replies to the ringing message carrying the SDP information for protecting the called party, the calling party will first anchor to the SCC AS , while leavin...
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The invention discloses a ringing state domain switching method and a ringing state domain switching device. The method comprises the following steps that: a single radio voice call continuity application server (SCC AS) receives an initiated session switching request from a mobile switching center (MSC) in the process of switching ringing state domains of a calling party and a called party; when the SCC AS determines that the initial session is established in a ringing state, a response message replied by the called party does not carry session description protocol (SDP) information of the called party; the SCC AS fakes the SDP information of the called party and transmits the faked SDP information of the called party to the MSC; and the MSC continuously finishes a subsequent process of ringing state domain switching according to the faked SDP information of the called party. According to the invention, even if session negotiation between a home terminal user and a remote terminal user is failed, the switching process can be successfully finished before the ringing state domain switching.
Description
technical field [0001] The present invention relates to the field of communications, in particular to a ringing state domain switching method and device. Background technique [0002] The Internet Protocol Multimedia Subsystem (IP Multimedia Subsystem, referred to as IMS) is the future development direction of multimedia communication, and is also the most important component of the next generation network. It is a subsystem supporting IP multimedia services proposed by the Third Generation Partnership Project (3GPP) and its notable feature is the adoption of the Session Initial Protocol (SIP) system. In this system In this context, multimedia communication has nothing to do with the access method, and can have multiple capabilities such as separation of multimedia service control functions and bearer capabilities, separation of calls and sessions, separation of applications and services, separation of services and networks, and integration of mobile network and Internet ser...
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IPC IPC(8): H04W36/14H04W76/06
CPCH04L65/1083H04M3/42H04W36/0022H04L29/06353H04L65/1095H04W36/00226
Inventor 高扬周蓝粢
Owner NANJING ZHONGXING XIN SOFTWARE CO LTD