Switching method, device, equipment and storage medium for single standby voice continuous service

Abstract

The embodiment of the present invention discloses a switching method, device, equipment and storage medium for single standby voice continuous service, which are used to improve the success rate of SRVCC service switching, avoid the waste of network resources caused by the failure of SRVCC service switching, and improve the network performance index. The method includes: receiving a handover request message sent by a base station, wherein the handover request message carries an identifier of a user equipment requesting SRVCC service handover; acquiring the user equipment in the Internet Protocol Multimedia Subsystem IMS domain according to the handover request message Session state; if it is determined that the session state of the user equipment is the pre-ringing state, suspend the switching request message until it is determined that the session state of the user equipment is switched from the pre-ringing state to the ringing state, and continue according to the The handover request message is used to perform SRVCC handover; or, if it is determined that the session state of the user equipment is in the deleting state, the SRVCC handover is terminated.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a switching method, device, equipment and storage medium for a single-waiting voice continuous service. Background technique [0002] The single radio voice call continuity (Single Radio Voice Call Continuity, SRVCC) service refers to LTE-based voice (Voice over LTE, VoLTE) users during the conversation from the Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network, E-UTRAN) When roaming to the terrestrial radio access network (UMTSTerrestrial Radio Access Network, UTRAN) / radio access network (GSM EDGE Radio AccessNetwork, GERAN), after the switching process of the user equipment (User Equipment, UE) and network equipment, the user's call is maintained without interruption. [0003] Such as figure 1 As shown, the switching process of SRVCC can be divided into the following steps: [0004] In step 1, the eNodeB ...

AI Technical Summary

Problems solved by technology

[0010] 1. For the SRVCC process (that is, bSRVCC) before the session rings, it needs the support of multiple network elements such as UE, eNodeB, SRVCC IWF, ATCF, SCC AS, etc., and the process is very complicated, and MME, SAE-GW is also required (SGW and PGW, Serving Gateway and Packet Data Gateway) can correctly handle related processes of bearer modification / deletion

Therefore, the bSRVCC process has a high probability of failure

[0011] 2. For the SRVCC process initiated during the disconnection process, since the IMS domain will delete the session soon, it will eventually reject the IST (session transfer) request sent by the SRVCC IWF, so the SRVCC process will inevitably fail

[0012] It can be seen that the existing SRVCC process is prone to bSRVCC with low success rate, invalid SRVCC, etc. Network performance indicators, but unable to improve the service perception of VoLTE users

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