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Method and device for realizing circuit switched fallback

A technology of circuit domain fallback and implementation method, which is applied to electrical components, wireless communication, etc., can solve the problems of long time for reading system messages, prolongation of CSFB call establishment, etc., and achieve the effect of shortening the establishment delay

Inactive Publication Date: 2016-06-08
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The embodiment of the present invention provides a CSFB implementation method and equipment to solve the current problem of long CSFB call establishment delay due to the long time for reading system messages

Method used

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  • Method and device for realizing circuit switched fallback
  • Method and device for realizing circuit switched fallback
  • Method and device for realizing circuit switched fallback

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 of the present invention provides a CSFB implementation method, such as image 3 As shown, it is a schematic flow chart of the CSFB implementation method described in Embodiment 1 of the present invention, and the CSFB implementation method may specifically include the following steps:

[0029] Step 301: the terminal determines the target cell to which the CSFB call needs to fall back.

[0030] Specifically, similar to the prior art, the terminal can determine the target cell to fall back to when initiating a CSFB call according to the redirection information issued by the network (which may carry corresponding frequency point information, etc.). Examples are not described here.

[0031] Step 302: Determine whether the target cell is in a pre-saved cell list, the cell list is composed of cells corresponding to the pre-saved cell system information, and if so, execute step 303.

[0032] Wherein, the cell system information pre-saved by the terminal may be ...

Embodiment 2

[0053] Based on the same inventive concept, Embodiment 2 of the present invention provides a terminal device, such as Figure 4 As shown, it is a schematic structural diagram of the terminal device in Embodiment 2 of the present invention, and the terminal device may include:

[0054] The determining unit 41 may be used to determine a target cell to which a CSFB call needs to fall back.

[0055] The judging unit 42 may be used to judge whether the target cell is in a pre-saved cell list, and the cell list is composed of cells corresponding to the pre-saved cell system information; wherein, the pre-saved cell system information corresponds to The cell can be any one or more of GSM cell, WCDMA cell, TD-SCDMA cell or CDMA1X cell.

[0056] The processing unit 43 may be configured to obtain cell system information corresponding to the target cell from pre-saved cell system information when the judgment result of the judgment unit 42 is yes, and use the obtained cell system informa...

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Abstract

The invention discloses a method and a device for realizing CSFB (Circuit Switched Fallback). According to the scheme, a terminal, when determining a target cell to be fallen back is in a cell list composed of each of cells corresponding to preliminarily stored cell system messages, can obtain the cell system message corresponding to the target cell from the preliminarily stored cell system messages, and utilizes the obtained cell system message corresponding to the target cell to establish a CSFB call, so that the effect of shortening the call establishing time delay of the CSFB can be achieved on the basis of not needing to reading the corresponding cell system message from a network place again.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a CSFB (Circuit Switched Fallback, circuit domain fallback) implementation method and device. Background technique [0002] LTE (Long Term Evolution, Long Term Evolution), as a subsequent evolution technology of 3G, is recognized by the industry as the evolution direction of the next generation of mobile communications due to its unique technical advantages such as high data rate, low delay, and flexible bandwidth configuration. However, since most of the current LTE terminals are mainly data terminals such as data cards and CPE (Customer Premise Equipment, customer premises equipment), and the product category is relatively single compared with the existing 3G terminals, it cannot meet the diverse needs of users for LTE terminals. . In addition, considering that LTE is a pure PS domain (PacketSwitch, packet switching domain) technology, how to solve the sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08H04W36/14
Inventor 阮航曹蕾董昊马帅
Owner CHINA MOBILE COMM GRP CO LTD
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