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CSFB calling method, mobile management entity, service gateway and system

A technology of mobile management entities and calling methods, which is applied to electrical components, wireless communication, etc., and can solve problems such as time consumption and resource consumption

Active Publication Date: 2020-10-23
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a CSFB call method, a mobile management entity, a service gateway and a system for the above-mentioned deficiencies in the prior art, which can solve the problem of terminal Time and resource consumption due to the need to re-establish the bearer context when returning to the 4G network

Method used

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  • CSFB calling method, mobile management entity, service gateway and system
  • CSFB calling method, mobile management entity, service gateway and system
  • CSFB calling method, mobile management entity, service gateway and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] This embodiment provides a CSFB call method, which is applied to a mobility management entity MME (MobilityManagement Entity), such as figure 1 As shown, the method includes:

[0060] Step S102: After the terminal in the 4G network performs fallback, determine whether the fallback cell of the terminal is a 2G / 3G cell;

[0061] Step S104: If the fallback cell is a 2G / 3G cell, send a request for suspension of the terminal bearer context to the serving gateway SGW;

[0062] Step S106: after the terminal returns to the 4G network, send a request to the SGW to restore the bearer context of the terminal.

[0063] In this embodiment, the terminal is a 4G multi-mode card, and the 4G multi-mode card selects CSFB technology to implement voice calls. The terminal has the ISR (Idle mode Signaling Reduction, saving signaling in idle mode) function. 2 / 3G network coverage, attach to the 2 / 3G network, the terminal releases the connection after the attachment is completed, and starts ...

Embodiment 2

[0073] Such as figure 2 As shown, this embodiment provides a CSFB paging method, which is applied to the serving gateway, and the method includes:

[0074] Step S202: receiving the request for suspension of the terminal bearer context sent by the MME, and suspending the terminal bearer context according to the request for suspension of the terminal bearer context;

[0075] Step S204: Receive the request for restoring the terminal bearer context sent by the MME, and restore the terminal bearer context according to the request for restoring the terminal bearer context.

[0076] Optionally, the method also includes:

[0077] When it is detected that the terminal has a downlink data service arriving and it is determined that the terminal activates the ISR, it is determined whether the terminal bearer context is in a suspended state;

[0078] If it is in the suspended state, a paging request for downlink data services is sent to the serving GPRS support node SGSN.

Embodiment 3

[0080] Such as image 3 As shown, this embodiment provides a mobility management entity, including:

[0081] The first judging module 302 is used to judge whether the fallback cell of the terminal is a 2G / 3G cell after the terminal in the 4G network falls back;

[0082] The first sending module 304 is connected to the first judging module 302, and is used to send a terminal bearer context suspension request to the serving gateway SGW when receiving the judging result of the first judging module 302 that the fallback cell is a 2G / 3G cell;

[0083] The second sending module 306 is configured to send a request to restore the bearer context of the terminal to the SGW after the terminal returns to the 4G network.

[0084] Optionally, can also include:

[0085] The first receiving module is connected to the first judgment module 302, and is used to receive the terminal fallback information sent by the evolved base station eNB, and send the terminal fallback information to the firs...

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Abstract

The invention provides a CSFB calling method, a mobile management entity, a service gateway and a system, and the method comprises the steps: judging whether a falling cell of a terminal is a 2G / 3G cell or not after the falling of the terminal in a 4G network; if the fallback cell is a 2G / 3G cell, sending a request for suspending the terminal bearer context to a serving gateway SGW; and after theterminal returns to the 4G network, sending a request for recovering the context borne by the terminal to the SGW. According to the CSFB calling method, the mobile management entity, the service gateway and the system, the consumption of time and resources can be reduced, and the problem that the existing CSFB calling method consumes time and resources due to the fact that a bearer context needs to be reestablished when a terminal returns to a 4G network is solved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a CSFB calling method, a mobile management entity, a serving gateway and a system. Background technique [0002] In the long-term evolution (English: Long Term Evolution, referred to as LTE) network, when the terminal makes a voice call, it is usually implemented through the circuit domain fallback (English: Circuit Switched Fallback, referred to as CSFB) technology, that is, the terminal will switch from the fourth generation mobile communication Technology (English: the 4Generation Mobile Communication Technology, referred to as 4G) network falls back to the second generation mobile communication technology (English: Second Generation, referred to as 2G) / third generation mobile communication technology (English: 3rd Generation, referred to as 3G) network, using 2G / 3G network realizes voice service. [0003] During the research and practice of the prior art, the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/14
CPCH04W36/0033H04W36/0058H04W36/14
Inventor 张余
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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