A method and device for releasing resources after a network switch occurs in a terminal in volte

A network switching and post-release technology, applied in connection management, wireless communication, electrical components, etc., can solve problems such as increasing network burden and increasing VoLTE network element resource occupation time.
CN107529200BActive Publication Date: 2021-02-23ZTE CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ZTE CORP
Publication Date
2021-02-23

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Abstract

The present invention discloses a method and device for releasing resources after network switching of a terminal in VoLTE, and relates to the field of VoLTE. Whether the user terminal has the ability to tear down the original network voice call; if the IMS network detects that the user terminal has the ability to tear down the original network voice call, the IMS network will release the original network voice call by sending SIP signaling. Call resources; if the IMS network detects that the user terminal does not have the ability to tear down the original network voice call, the IMS network releases the voice call resources of the original network by not sending or retransmitting SIP signaling. By detecting the ability of the user terminal to tear down the original network voice call, the resource occupation time of the original network voice call on the IMS network element is reduced.
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Description

technical field

[0001] The present invention relates to the field of voice service (Voice over Long Term Evolution, VoLTE) network based on long-term evolution, and in particular to a method and a device for releasing resources after network switching of a terminal in VoLTE. Background technique

[0002] In the VoLTE network, when the fourth generation communication technology (The 4th Generation Mobile Communication Technology, 4G) terminal makes a voice call with the IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) network through the Packet Switching Domain (PS) network , if the terminal undergoes a network switchover, and a voice call occurs with the IMS network through the Circuit Switched Domain (CS) network, the network elements of the IMS network will follow the Session Initiation Protocol (Session Initiation Protocol, SIP). The call is torn down, and SIP signaling messages such as a call release request (ie BYE request) or a failure response are sent to ensure...

Claims

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