Method and apparatus for maintaining call continuity

A technology of call continuity and equipment, applied in the field of communication, can solve the problems of prolonged handover, long media interruption time, affecting user experience, etc.

Inactive Publication Date: 2014-12-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the process of updating the remote media, a longer media interruption time will be introduced, resulting in a longer switching delay, which will affect the user experience

Method used

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  • Method and apparatus for maintaining call continuity
  • Method and apparatus for maintaining call continuity
  • Method and apparatus for maintaining call continuity

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Embodiment Construction

[0075] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0076] The technical solution of the embodiment of the present invention can be applied to a system that needs to switch from packet switching (Packet Switching, PS) to CS. For example, a system with full coverage of the CS network and partial coverage of the LTE network, wherein the CS network can be Global System of Mobile communication (GSM), Code Division Multiple Access (CDMA), broadband CDMA The core network circuit domain switching network of systems such ...

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Abstract

The present invention discloses a method for maintaining call continuity, a user data server and a mobile switching center apparatus. The method comprises receiving routing request information sent by the mobile switching center apparatus, the routing request information carrying a user identification of UE; acquiring a switchover routing number associated with the user identification according to the user identification; sending a route replay message to the mobile switching center apparatus, the route replay message carrying the switchover routing number, the switchover routing number being used for enabling the mobile switching center apparatus to route a CS call of the UE to ATCF. With adoption of the method for maintaining call continuity, the user data server and the mobile switching center apparatus, the handoff delay can be shortened, and user experience is raised.

Description

technical field [0001] The present invention relates to the field of communication, and more particularly, to a method for maintaining call continuity, a user data server and mobile switching center equipment. Background technique [0002] Voice over LTE (VoLTE) over Long Term Evolution (LTE) is a network that uses an Internet Protocol Multimedia Subsystem (IP Multimedia Subsystem, IMS) network to provide interpersonal communication over wireless access in a full packet mode. The technology aims to replace the traditional circuit switching (Circuit Switching, CS) voice technology in the new wireless technology. As data traffic gradually surpasses voice and becomes the mainstream of user consumption, LTE and other [0003] All packet wireless networks will be gradually deployed to meet people's needs. [0004] However, in practice, it is impossible to complete the coverage of a traditional CS access network overnight when deploying a new wireless access network. There is a ...

Claims

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Application Information

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IPC IPC(8): H04W4/16H04W36/14H04W76/02H04L29/06
CPCH04W36/0011
Inventor 贾毅刚何群
Owner HUAWEI TECH CO LTD
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