Network switching method and system

A network switching and network technology, applied in the field of communication, can solve the problems of dual-card terminal call interruption and affect terminal calls, and achieve the effect of avoiding call interruption and reducing waiting time

Active Publication Date: 2016-06-29
CHINA UNITED NETWORK COMM GRP CO LTD
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Problems solved by technology

[0005] The present invention provides a method and system for network switching, which is used to solve the problem that the 3G / 2G network reserves CS domain network resources for the terminal in the prior art during the process of performing SRVCC switching, and the resource reservation process may be delayed due to too long time. The call of the dual card terminal is interrupted, which affects the call of the terminal

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Embodiment approach

[0043] Further, on the basis of the above-mentioned embodiments, another implementation manner of step 101 includes:

[0044] When the dual-card terminal uses the first card to perform an LTE call, the MME entity determines that the dual-card terminal is about to execute the SRVCC handover process according to a notification message from the remote 4G core (Evolved Packet Core, EPC) network.

[0045] Correspondingly, another implementation manner of step 102 includes:

[0046] The MME entity determines the second card identifier of the dual-card terminal corresponding to the pre-stored first card identifier of the dual-card terminal;

[0047] The MME entity determines the MSC corresponding to the second card identifier of the dual-card terminal, and sends the first card identifier to the MSC, so that the MSC determines the CS domain network resource corresponding to the first card identifier;

[0048] The MME entity receives the resource reservation success message returned b...

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Abstract

The invention provides a network switching method and system; wherein the method is applied in a dual-card terminal; a first card is in support of an LTE network; a second card is in support of a 3G/2G (The2/3th Generation mobile communication technology) network; the method comprises following steps of in a process that the dual-card terminal uses the first card to carry out an LTE call, determining that the dual-card terminal is about to execute an SRVCC (Single Radio Voice Call Continuity) switching process; applying CS domain network resources demanded when the dual-card terminal executes the SRVCC switching process, wherein the CS domain network resources are applied through the second card of the dual-card terminal instead of the first card; and when the dual-card terminal executes the SRVCC switching process, finishing the SRVCC switching process through adoption of the CS domain network resources applied in advance. According to the method and the system, the purpose of reserving the CS domain network resources demanded for executing the SRVCC switching process in advance is realized; the waiting time when the dual-card terminal carries out network switching is reduced; and call interruption of the dual-card terminal resulting from network switching is avoided.

Description

technical field [0001] The present invention relates to communication technology, in particular to a network switching method and system. Background technique [0002] Using terminal equipment to make voice calls has become an indispensable way of communication in people's life and work. The network under the voice call includes: the second and third generation mobile communication technology (The2 / 3thGeneration mobile communication technology, referred to as 3G / 2G) network, and the LTE network based on IMS voice service; among them, the LTE network is often called 4G network. Generally, the primary card and secondary card in a dual-card terminal can use LTE network and 3G / 2G network respectively. When a card of a dual-card terminal makes a call under the LTE network, since the LTE network does not cover all geographical areas, the 3G / 2G network still covers most of the geographical areas. When the range is limited, it is necessary to switch the voice service of the first ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/14H04W88/06
CPCH04W36/0066H04W36/14H04W88/06
Inventor 袁晓静侯玉华
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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