Dual-mode single-standby voice service continuity realization method and Internet protocol (IP) multimedia subsystem

A technology for multimedia subsystems and voice services, applied in transmission systems, communication supplementary services, electrical components, etc., can solve problems such as voice interruption, inability to receive, and poor user experience, to shorten interruption time, improve user experience, and save information. cost effect

Active Publication Date: 2011-06-22
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology

However, due to the uncertainty of the UE's access location, for example, the user may be roaming, the delay of the session update signaling from the SCC AS to the remote UE and the update of the media link may take a long time, In this way,

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  • Dual-mode single-standby voice service continuity realization method and Internet protocol (IP) multimedia subsystem
  • Dual-mode single-standby voice service continuity realization method and Internet protocol (IP) multimedia subsystem
  • Dual-mode single-standby voice service continuity realization method and Internet protocol (IP) multimedia subsystem

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Embodiment Construction

[0063] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] The embodiment of the present invention proposes an improved SRVCC solution for switching voice services from an LTE network to a 2G / 3G network. , to save signaling overhead, shorten the interruption time of the media plane during switching, and improve user experience.

[0065] In order to ensure the continuity of the session, when the terminal initiates a session in the LTE network, the session control signaling is anchored on the application server SCC AS serving the terminal, and the SCC AS serves as the anchor point of the user session signaling to perform session switching The control and media links are updated to help the terminal seamlessly switch from the LTE network to the 2G / 3G network.

[0066] Since the SCC AS also has a media ...

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Abstract

The invention provides a dual-mode single-standby voice service continuity realization method and an Internet protocol (IP) multimedia subsystem. The method comprises the following steps that: A, when local user equipment issues a session request from a long-term evolution (LTE) network, a service continuity control application server (SCC AS) in an information management system (IMS) anchors media links of the local user equipment and opposite user equipment onto a media functional processing entity in the IMS; and B, after the local user equipment is switched from evolved universal terrestrial radio access network (E-UTRAN) access to Gsm edge radio access network (GERAN)/terrestrial radio access network (UTRAN) access, the SCC AS updates the media link of the local user equipment to be the media link between a mobile switching center (MSC) Server and the media functional processing entity. By the method and the subsystem, the interruption time of a media plane in the switching of the user equipment from the LTE network to a 2G/3G network can be shortened, and user experiences are improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for realizing dual-mode single-standby voice service continuity (SRVCC) and an IP multimedia subsystem (IMS). Background technique [0002] In the initial stage of Long-Term Evolution (LTE) network construction, its signal coverage is limited. When a user uses the LTE network for voice calls and moves to a place where the LTE network signal is weak but the 2G / 3G network signal coverage is better, In order to maintain the continuity of the voice service, it is necessary to switch the voice call from the LTE network to the 2G / 3G network. Since there is currently no terminal capable of simultaneously attaching to and sending and receiving data on both the LTE network and the 2G / 3G network, the voice service continuity between the LTE network and the 2G / 3G network is based on the dual-mode single-standby mode. [0003] At present, the third generation partnership (3GPP...

Claims

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Application Information

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IPC IPC(8): H04W4/16H04W36/18H04L29/06
Inventor 姜怡吴宁
Owner CHINA MOBILE COMM GRP CO LTD
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