Method, terminal and system for shortening CSFB cell fallback time

A cell and time technology, applied in the field of communication, can solve problems such as time extension and complicated process, and achieve the effects of reducing call delay, shortening fallback time, and saving cell measurement and location update processes

Active Publication Date: 2019-10-01
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to at least partly solve the technical problems of complex flow and long delay in the establishment process of the mobile terminal in the CSFB fallback call existing in the prior art, the present invention is completed

Method used

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  • Method, terminal and system for shortening CSFB cell fallback time
  • Method, terminal and system for shortening CSFB cell fallback time
  • Method, terminal and system for shortening CSFB cell fallback time

Examples

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Embodiment 1

[0046] Such as figure 1 As shown, the present invention provides a kind of method that shortens the fallback time of CSFB cell, comprises:

[0047] Step S1: After the mobile terminal is powered on, the mobile terminal sends a request to the eNB to obtain the configuration information of the fallback cell of the current cell, and obtains the configuration information of the fallback cell sent by the eNB, wherein the configuration information of the fallback cell includes the configuration information of the fallback cell configured by the eNB for the mobile terminal and the current Cell identification and frequency point information of multiple fallback cells corresponding to the cell;

[0048] Step S2: The mobile terminal measures each of the acquired fallback cells, and saves the frequency point information of several fallback cells whose signal quality ranks top in the measurement results;

[0049] Step S3: When there is an incoming call to call the 4G card of the mobile te...

Embodiment 2

[0069] According to another aspect of the present invention, such as figure 2 As shown, the present invention also provides a terminal for shortening the fallback time of the CSFB cell, including: an acquisition module 11, a measurement module 12 and a fallback module 13;

[0070] The acquisition module 11 is used to send a request to the eNB to obtain the configuration information of the fallback cell of the current cell after the mobile terminal is turned on, and obtain the configuration information of the fallback cell sent by the eNB, wherein the configuration information of the fallback cell includes the configuration information of the fallback cell configured by the eNB for the mobile terminal. Cell identification and frequency point information of multiple fallback cells corresponding to the current cell to which the mobile terminal falls back;

[0071] The measurement module 12 is used to measure each falling-back cell acquired by the acquisition module 11, and save ...

Embodiment 3

[0087] On the other hand, if Figure 4 As shown, the present invention also provides a system for shortening the fallback time of a CSFB cell, including MME3, eNB2, and terminal 1 as described above.

[0088] In addition to the function of the eNB2 and MME3 for performing the normal CSFB fallback process, eNB2 is also used to send the configuration information of the fallback cell to the mobile terminal after the mobile terminal sends a request to obtain the configuration information of the fallback cell to the eNB; it should be noted that , the technical features of the first method embodiment and the second terminal embodiment are also applicable to this system embodiment, and will not be repeated here.

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Abstract

The invention provides a method for shortening CSFB (Circuit Switched Fallback) cell fallback time, which comprises the following steps that: a mobile terminal obtains fallback cell configuration information sent by an eNB (evolved Node B), measures the obtained fallback cell and stores frequency point information of a plurality of cells with higher signal quality ranks in a measurement result; and when an incoming call calls the 4G card, the MME sends a paging request to the mobile terminal, the mobile terminal sends a cell fallback response to the MME and releases RRC connection, and the mobile terminal falls back to an appropriate cell according to the stored cell frequency point information and establishes a call. The invention also provides a corresponding terminal and system. According to the method, the terminal and the system for shortening the CSFB cell fallback time provided by the invention, when the mobile terminal needs to fallback, the fallback time is shortened; according to the embodiment of the invention, the fallback is directly carried out according to the best fallback cell frequency point of the stored signal, paging is responded, the cell measurement and position updating process of CSFB fallback in the call establishment process is saved, the call delay is reduced, and the mobile terminal can quickly establish the call.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for shortening the fallback time of a CSFB cell, a terminal for shortening the fallback time of a CSFB cell, and a system for shortening the fallback time of a CSFB cell. Background technique [0002] A typical CSFB (Circuit Switched Fallback, circuit domain fallback) service process mainly includes joint attachment, location update, calling (MO) CSFB process, called (MT) CSFB process, and detachment; Stay in the LTE network idle state or data service connection state, when there is a voice service demand (calling or called), through the LTE (Long Term Evolution, long-term evolution) network assistance, fall back to the 2G / 3G network to establish a voice service, and the call is completed Then quickly return to the LTE network. [0003] During the establishment of a CSFB fallback call for a terminal, the signaling interaction is complex and involves many ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/14
CPCH04W36/0022H04W36/0066H04W36/0072H04W36/14H04W36/0085
Inventor 张余
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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