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Switching method for circuit exchange call connection

A technology of call connection and circuit switching, which is applied in the field of communication, can solve problems that have not yet been proposed, and achieve the effect of ensuring the continuity of calls

Inactive Publication Date: 2009-01-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the deepening of research and the development of network construction, the need to provide voice over IP (VoIP) services through WLAN access to IMS and to achieve service continuity with CS voice calls has been put on the agenda. A related regulation has been passed in 3GPP work project to investigate a solution to this problem, however no concrete solution has been proposed so far

Method used

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  • Switching method for circuit exchange call connection
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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] The core idea of ​​the method of the present invention is: when the CS user needs to switch the access mode or the access terminal during the CS call process, the CS network service control entity obtains the addressing information of the connection point of the switching side user after switching, and Controlling the CS network call control entity to establish a new call connection with the switched connection point according to the addressing information, and then controlling the CS network call control entity to connect the switched connection point to the peer user in the initial CS call connection; Finally, the CS network call control entity is controlled to release the call connection with the pre-handover connection point of the handover side user fro...

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Abstract

A method for switching over connection of circuit interchange call includes obtaining an addressing information of connection point before and after switch-over of user at switch-over side by CS network service control entity, setting up new call connection of connection point after switch-over by said entity as per said information, using said entity to connect connection point after switch-over to opposite user in initial CS call connection and using said entity to release call connection of connection point before user switch-over at switch-over side from initial CS call connection.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a switching method for a circuit switching (CS) call connection. Background technique [0002] With the popularity of the Internet (Internet), people are no longer satisfied with a single voice communication method, but need a new multimedia communication method. Therefore, the IP-based (Internet Protocol) of the mobile communication network and the fixed communication network and the integration of the Internet and the telecommunication network have undoubtedly become the industry-recognized future network development trend. In order to meet the increasingly prominent needs of IP multimedia applications, the 3GPPR5 stage introduced the IP Multimedia Subsystem (IMS) of the all-IP service network architecture on the basis of the packet bearer network. The IMS uses the packet domain as its upper layer control signaling and media data. The transmission bearer channel adopts t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38H04W4/16H04W36/14
CPCH04Q3/0045H04W36/0022H04W36/00226
Inventor 朱东铭
Owner HUAWEI TECH CO LTD
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