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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 the problems of asynchronous switching and reduce user experience, so as to reduce the voice interruption time and improve user experience.

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

[0019] The inventors found that in the method for realizing the continuity of single-channel voice service, if the SRUE currently still has PS domain services, GERAN / UTRAN needs to notify the SGSN to perform the handover. After receiving the notification, the SGSN will send a PStoPS handover request to the MME, and the MME After receiving the handover request, PS-to-PS handover is performed. Since the SRUE’s CS-to-PS handover and PS-to-PS handover are independent of each other, the SRUE’s CS domain service and PS domain service handover will be asynchronous, reducing the user experience

Method used

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Examples

Experimental program
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Embodiment 1

[0035] Figure 4 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 and MME30 of the target network (ie PS domain network). Among them, UTRAN / GERAN10 is used to notify eMSC20 to prepare to handover the UE from the CS domain network to the PS domain network (i.e. the target network); eMSC20 is used to determine whether the UE has CS voice services and PS data services at the same time, and if so, notify MME30, the UE has CS voice service and PS data service at the same time; MME30 is used to receive the UE's CS to PS handover request message and the UE's After the PS-to-PS handover request message, notify the network element of the PS domain network to prepare network resources for the UE, so that after the UE switches to the PS domain network, the network resources prepared for it by the PS domain network are transmitted between the UE and the remote e...

Embodiment 2

[0062] This embodiment describes the procedure for the SRUE to switch to the PS domain network when the CS domain voice service and the PS domain data service occur simultaneously on the GERAN / UTRAN network. Figure 7 For the signaling flow chart of this embodiment, GERAN / UTRAN decides to initiate an access network handover according to the measurement report reported by the SRUE, and sends a handover request message to the source MSC, mainly including the following steps:

[0063] 701. GERAN / UTRAN decides to initiate inter-network access handover according to the wireless measurement report reported by SRUE;

[0064] 702. GERAN / UTRAN perceives that SUUE initiates CS voice service and PS data service on the network at the same time, and sends a handover request message to the source MSC. The target address location cell in the message is the target PS domain network cell, and the message also carries PS service indication identifier, the PS service indication identifier is use...

Embodiment 3

[0097] This embodiment describes the process of the SGSG notifying the MSC whether the current UE is initiating a PS data service.

[0098] Figure 8 The signaling process of this embodiment mainly includes the following steps:

[0099] 801. SRUE registers in the PS domain, and registers with the MSC from the SGSN through joint registration;

[0100] 802. The SRUE initiates a data service request;

[0101] 803. The SGSN informs the MSC that the current SRUE initiates a data service through a notification message;

[0102] 804. SRUE performs data interaction with the remote IP network;

[0103] 805. The SRUE initiates a data service release request;

[0104] 806. The SGSN informs the MSC that the current SRUE has canceled the data service through a notification message;

[0105] 807. The PS network releases the PS connection of the UE.

[0106] Through this embodiment, the jointly registered SGSN can notify the MSC whether the SRUE is initiating the PS data service, so th...

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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 eMSC to prepare to switch the UE from the CS domain network to the PS domain network; the eMSC determines that the UE has both CS voice services and PS data services, and notifies the MME of the PS domain network? The UE has both CS voice services and PS data services; after receiving the UE's CS to PS handover request message and PS to PS handover request message, the MME notifies the network element of the PS domain network to prepare network resources for the UE; the MME uses the CS The domain network notifies the UE to switch to the PS domain network; after the UE switches to the PS domain network, the media data between the UE and the remote end is transmitted through the network resources prepared by the PS domain network for the UE. Through the present invention, the CS voice service and PS data service of the UE can be switched synchronously.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and system for realizing single-channel speech continuity. Background technique [0002] figure 1 It is the architecture diagram of the evolved packet domain system (EvolvedPacketSystem, referred to as EPS), including: Evolved Universal Mobile Communication System Radio Access Network (EvolvedUniversalMobileTelecommunicationSystemRadioAccessNetwork, referred to as E-UTRAN or EUTRAN), mobile management entity (MobilityManagementEntity, referred to as MME) , Serving Gateway entity (ServingGateway, referred to as S-GW); packet data network gateway (PacketDataNetworkGateway, referred to as PDNGW or P-GW), serving GPRS support node (ServingGPRSSupportingNode, referred to as SGSN), charging and policy control entity (PolicyandChargingRuleFunction , referred to as PCRF) and a home network server (HomeSubscriberServer, HSS). Wherein, the P-GW and the S-GW may be co-locate...

Claims

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Application Information

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