Network switching method based on circuit switched domain fall back CSFB

A circuit domain fallback and network switching technology, applied in the field of network switching based on circuit domain fallback CSFB, can solve the problems of link overhead, affecting communication quality and user experience, slowing system response speed, etc. Quality and user experience, the effect of improving response speed

Active Publication Date: 2016-02-17
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0005] However, in the prior art, in the above-mentioned network switching process, if the network switching fails, it will return to the LTE network, first establish an RRC (RadioResourceControl) link, and under active calling or paging, the user / application layer will initiate a voice call again. Re-doing the CSFB process and the above-mentioned network switching will result in link overhead, call delay, and slow system response, affecting communication quality and user experience

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  • Network switching method based on circuit switched domain fall back CSFB
  • Network switching method based on circuit switched domain fall back CSFB
  • Network switching method based on circuit switched domain fall back CSFB

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[0039] In order to make the purpose, features and effects of the present invention more obvious and understandable, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0040] Many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways than described here, so the present invention is not limited by the specific embodiments disclosed below.

[0041] Such as figure 1 As shown, when the LTE network is deployed, the coverage of the 2G network can be considered as full coverage of the entire range 10 to 12, while the 3G network may be continuous coverage of the range 11 and range 12, and the LTE network may achieve high-speed range 12. Coverage of data services.

[0042] In order to ensure the continuity of user services, combined with the progress of LTE, it is n...

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Abstract

The present invention relates to a network switching method based on circuit switched domain fall back CSFB, comprising: performing a packet switched domain service in a current service cell that does not support a circuit switched domain service; switching a terminal to a first target cell for network decision, the network type of the first target cell matches the circuit switched domain service; if the switching is failed, continuing retaining in the circuit switched domain; performing cell selection by the terminal; and connecting to a second target cell that can perform the circuit switched domain service. The network switching method of the present invention can improve the success rate for establishing a call when the network switching based on a CSFB process is failed, thereby improving communication quality.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a network switching method based on CSFB fallback. Background technique [0002] Circuit Switched Domain Fallback (CSFB for short) can enable user equipment (User Equipment, UE for short) to initiate circuit switched (Circuit Switched, CS for short) services such as voice and receive paging for CS services such as voice under LTE access, and can Correctly process the ongoing Packet Switching (PS) service of the terminal under the access of the Long Term Evolution (LTE for short) system. In CSFB technology, in the dual coverage area of ​​LTE and 2G / 3G, for voice, Location Services (LCS for short) and supplementary services, user equipment can trigger a fallback from LTE access to the second generation mobile communication technology (2rd- generation (2G for short) / third-generation mobile communication technology (3rd-generation, 3G for short) network access and CS service....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/14H04W36/00H04W48/16
Inventor 范伟高喜春陈贤亮
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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