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A processing method for session switching on the called side 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

Inactive Publication Date: 2017-07-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, during the handover process, both the SDP offer information updated by the local UE and the SDP offer information of the remote UE arrive at the AS, but the 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

Method used

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  • A processing method for session switching on the called side and as
  • A processing method for session switching on the called side and as
  • A processing method for session switching on the called side and as

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Embodiment Construction

[0089] The technical solution of the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0090] In order to realize the negotiation and reservation of media resources in the case of the session switching on the called side before the ringing, and to ensure the successful session switching before the ringing, the method for processing the session switching on the called side provided by the present invention mainly includes:

[0091] During the establishment of a session that requires resource reservation, the AS learns about media resource negotiation and reservation, and executes it only after receiving a session switching request and receiving confirmation that the resource reservation from the calling side is complete. Session switching process;

[0092] The AS sends the resource reservation on the calling side to the control network element of the target session.

[0093] The control network element of the target...

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Abstract

The invention discloses a processing method and an application server (AS) for session switching on the called side. The method includes: the application server (AS) learns about media resource negotiation and reservation during the session establishment process requiring resource reservation , in the case of receiving the session switching request and receiving the confirmation information that the resource reservation of the calling side is completed, the session switching process is executed. The present invention realizes media resource negotiation and reservation in the case of session switching on the called side before ringing, and ensures successful session switching before ringing.

Description

Technical field [0001] The present invention relates to the field of communication, and in particular to a method and AS for processing session switching on the called 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; during the establishment of a voice session, both a signaling path and a media path must be established. In the signaling message, the caller and the called user negotiate resources to reach an agreement on the media combination used in this session and the coding scheme used by various media; in this process, the Session Description Protocol (SDP, The offer / answer mechanism of Session Description Protocol. In addition, because the establishment of the media path often takes longer than the establishment of the signaling path, the prior art proposes a resource reservation mechanism, that is, the session enters onl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/26H04W36/14H04W88/14
Inventor 徐绍华谢振华
Owner ZTE CORP
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