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A processing method and as

A technology of session switching and processing method, which is applied in the field of communication, can solve problems such as switching failure and model inconsistency, and achieve the effect of ensuring the success of session switching

Active Publication Date: 2017-11-03
ZTE CORP
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  • Summary
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Problems solved by technology

However, during the handover process, both the SDP offer information of UE A's source media and the SDP offer information of UE A's target media arrive at AS, but AS has not received the SDP answer information corresponding to the above two SDP offer information In this case, it will not match the existing SDP offer / answer model, which will cause the switchover to fail

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Embodiment Construction

[0080] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0081] In order to realize media resource negotiation and reservation under the condition that the caller switches before ringing, and ensure the success of switching before ringing, a method for session switching provided by the present invention mainly includes:

[0082] During the establishment of a session that requires resource reservation, the AS learns about media resource negotiation and reservation, and when receiving a session handover request, judges whether it has received the results to determine when to perform the session switch process.

[0083] It should be noted that the session switching on the calling side occurs during the resource negotiation process between the calling side and the called side, and before the called side sends a ringing request.

[0084] In addition, when receiving the session...

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Abstract

The invention discloses a processing method and an application server (AS) for session switching on the calling side. The method includes: the application server (AS) learns about media resource negotiation and reservation during the session establishment process requiring resource reservation , and when the session switching request is received, it is judged whether the confirmation information of resource reservation completion of the calling side is received, and the session switching process is executed according to the judgment result. The present invention realizes media resource negotiation and reservation in the case of session switching on the calling side before ringing, and ensures successful session switching before ringing.

Description

technical field [0001] The invention relates to a session switching technology in the field of communication, in particular to a processing method and an AS for session switching on a calling side. Background technique [0002] With the development of mobile communication technology and the evolution of the core network, the control plane and the media plane of the core network are separated; in the process of establishing a voice session, both a signaling path and a media path must be established. In the signaling message, resource negotiation is carried out between the calling user and the called user, and an agreement is reached on the combination of media used in this session and the encoding scheme used by various media; in this process, the Session Description Protocol (SDP, Session Description Protocol) offer / answer (offer / answer) mechanism. In addition, since the establishment of the media path often takes longer than the establishment of the signaling path, the exi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/18H04W28/26H04W36/14H04W88/14
Inventor 徐绍华李世涛
Owner ZTE CORP
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