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Session preemption method

A session transfer and session update technology, applied in the field of communication, can solve the problems of low operability of SUBSCRIBE request, high UE requirements, and unfavorable new services.

Inactive Publication Date: 2008-10-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] However, this session picking technology has the following disadvantages: the requirements for UE are relatively high, not all UEs support Dialog events, and the operability of SUBSCRIBE requests is not strong for relatively backward equipment, which is not conducive to extensive development of new services; users must Knowing the proxy address is even more unrealistic for cross-operator business

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Embodiment Construction

[0047] The technical solution of the present invention will be described in more detail below with reference to the drawings and embodiments.

[0048] The present invention mainly comprises the following steps:

[0049] (1) Initialize the configuration, configure the session preemption service for the user terminal (such as UE-B) on the application server, and configure a certain preemption strategy;

[0050] (2) When the user wants to use the preempting device C to preempt the call of the B device in the session A-B, the B device will be used as the session transfer party; the A device will be used as the session transferee, and the C device will be used to initiate a call to the B device.

[0051](3) According to the preemption policy, the application server of the session transferer B device completes the session update for the session transferee A device and the preemption party C device for the call that meets the policy—that is, the call that the preempting party is allo...

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Abstract

The invention relates to a conversation preemption method which comprises the steps that: a device of a preemption party starts up a calling to the device of a conversation transfer party; an application server of the conversation transfer party judges whether the calling is in accordance with a preemption strategy, if so, the conversation of the device of a conversation transferred party is updated and the calling of the device of the preemption party is responded; finally the conversation connection between the device of the preemption party and the device of the conversation transferred party is realized. The technical proposal of the method of the invention can ensure that users can preempt the existed conversation by using another device or preempt the conversation with calling intention by using another device directly when the call is not answered.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a session preemption method. Background technique [0002] IP (Internet Protocol, referred to as IP) multimedia subsystem (IP MultimediaCore Network Subsystem, referred to as IMS) is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3GPP for short), Constructed an open and flexible business environment, supports multimedia applications, and can provide users with rich multimedia services. [0003] In the IMS service system, the control layer and the service layer are separated, and the control layer does not provide specific services, but only provides necessary functions such as triggering, routing, and charging to the service layer. The service trigger and control function in the control layer is the call session control function (Call Session Control Function, referred to as CSCF, which is divided into three types: Proxy, In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/58H04M3/42H04Q7/38H04L29/06
Inventor 谢振华
Owner ZTE CORP