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Method and system for implementing single-channel voice continuity

A technology of voice continuity and implementation method, applied in the field of communication, can solve problems such as reducing user experience and long call interruption time, and achieve the effects of improving user experience, reducing voice interruption time, and saving waiting time

Inactive Publication Date: 2016-01-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the call interruption time is too long, which reduces the user experience

Method used

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  • Method and system for implementing single-channel voice continuity
  • Method and system for implementing single-channel voice continuity
  • Method and system for implementing single-channel voice continuity

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0034] image 3 It is a schematic structural diagram of a single-channel voice continuity realization system according to Embodiment 1 of the present invention, including: UTRAN / GERAN10, eMSC20, MME30, packet data network gateway (including S-GW and P-GW) 40 and E-UTRAN50. Among them, UTRAN / GERAN10 is used to notify eMSC20 to prepare to handover UE from CS domain network to PS domain network accessed by E-UTRAN50; eMSC20 is used to notify MME30 of PS domain network to prepare to handover UE to PS domain network; MME30 , for judging whether there is a UE bearer in the current PS domain network, and if the judgment is no, request the packet data network gateway 40 of the PS domain network to create a bearer for the UE, and receive the bearer returned by the packet data network gateway 40 After creating a successful response, notify the E-UTRAN to allocate air interface resources for the bearer, and notify the UE to switch to the PS domain network through the source network (i.e....

Embodiment 2

[0053] This embodiment describes the procedure for the SRUE to switch from the GERAN / UTRAN to the EUTRAN network when only CS domain voice services occur on the GERAN / UTRAN network. Figure 6 For the signaling flow chart of this embodiment, GERAN / UTRAN decides to initiate an access network handover according to the measurement report reported by SRUE, and sends a handover request message to SourceMSC, which mainly includes the following steps:

[0054] 601. GERAN / UTRAN decides to initiate inter-network access handover according to the wireless measurement report reported by SRUE;

[0055] 602. GERAN / UTRAN sends a handover request message to SourceMSC, and the target address location cell in the message is the target EUTRAN network cell;

[0056] 603. After receiving the handover request message, the SourceMSC selects an eMSC according to the target cell information, and sends a handover preparation message to the eMSC. The message carries the information of the source cell and...

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Abstract

The invention discloses a method and system for realizing single-channel voice continuity. The method includes: UTRAN or GERAN notifies the MME of the PS domain network through eMSC that it is ready to switch the UE from the CS domain network to the PS domain network; the MME determines that the PS domain network does not have a bearer for the UE, and requests the packet data network gateway of the PS domain network to be The UE creates a bearer and notifies E-UTRAN to allocate air interface resources to the bearer; the MME notifies the UE to switch to the PS domain network through the CS domain network; after the UE switches to the PS domain network, it uses the air interface resources allocated by the evolved UTRAN to create a The bearer transmits the voice media between the UE and the remote end. Through the invention, the waiting time before resuming the voice call can be saved, the voice interruption time can be reduced, and the user experience can be improved.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and system for realizing single-channel voice continuity. Background technique [0002] Figure 1 is an architecture diagram of an evolved packet domain system (Evolved Packet System, referred to as EPS), including: an evolved global system for mobile communication radio access network (Evolved Universal Mobile Telecommunications System Radio Access Network, referred to as E-UTRAN or EUTRAN), a mobility management entity (MobilityManagementEntity, referred to as MME), Serving Gateway (Serving Gateway, referred to as S-GW); Packet Data Network Gateway (PacketDataNetworkGateway, referred to as PDNGW or P-GW), Serving GPRS Supporting Node (ServingGPRSSupportingNode, referred to as SGSN), charging and policy control entity ( Policy and ChargingRuleFunction, referred to as PCRF) and a home network server (HomeSubscriberServer, HSS). Wherein, the P-GW and the S-GW may be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/14H04W72/04
CPCH04W36/14H04W36/00226
Inventor 陶全军谢振华卢飞
Owner ZTE CORP
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