A method for preventing call session control function entity from active resource hangup

A technology for calling session control and functional entities, which is applied in the direction of wireless network protocols, electrical components, transmission systems, etc., to achieve the effect of preventing resources from hanging

Inactive Publication Date: 2008-01-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention solves the problem that when the user accesses the IMS from the SBC to conduct a session, the SBC is abnormal, and the problem of preventing active session resources from hanging up after the SBC fault recovery

Method used

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  • A method for preventing call session control function entity from active resource hangup

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Experimental program
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Embodiment Construction

[0017] The invention proposes a method for preventing resource hangup on CSCF after the SBC fails during the conversation between the calling party and the called party when the SBC is connected to the IMS for conversation, and after the failure is recovered. Include the following steps:

[0018] Step 110: After the SBC failure recovery is completed, notify the access CSCF connected to the SBC of its failure recovery;

[0019] Before the step 110, it also includes that the calling party sends a message to the call session control function entity through the session border control device, calls the called party, the called party rings and picks up the hook, establishes an active session with the calling party, and the caller and the called party During a call, the session border control device malfunctions abnormally.

[0020] After the call between the calling party and the called party is established, the calling party sends a media stream to the called party through the ses...

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Abstract

The invention provides a method for preventing call / session control functional entity active resource from hanging. After recovery of session border controller failure is finished, a failure recovery message is transmitted to an access call / session control functional entity; and after receiving the failure recovery message, the access call / session control functional entity releases all the user resources of active session accessed from the session border control and notifies other call / session control functional entities to release all user resources of active session accessed from the session border control. The inventive method can notify a call / session control functional entity to release correspondent resources after a session border controller failure is recovered, thereby preventing resources hanging.

Description

technical field [0001] The invention relates to a processing strategy after an abnormal situation occurs in the SBC when a user accesses an IMS (IP Multimedia Subsystem) from an SBC (Session Border Control, session border control device) to conduct a session. Background technique [0002] With the development of mobile communication technology, a single voice communication method will not be able to meet the needs of users. What users need is a new multimedia communication method. This communication method can not only handle basic voice and video communications, but also support real-time communication. Messaging, collaboration, and streaming. 3GPP proposes an IP Multimedia Subsystem (IMS, IP Multimedia Subsystem) on the basis of the packet domain. [0003] The main functional entities in IMS are CSCF (Call Session Control Function, call session control function entity), HSS (Home Subscriber Server, home user server) and network element BGCF (Border Gateway Control Functio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04L29/06H04W80/10
Inventor 孙闵汤凯张宝健汪军
Owner ZTE CORP
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