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Method and device for recovering a volte call

A terminal device and call failure technology, applied in the communication field, can solve the problems of VoLTE call drop, full-band scanning time-consuming, etc.

Active Publication Date: 2020-08-18
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a method for resuming a VoLTE call over long-term evolution voice bearer, so as to solve the problem of VoLTE call drop in terminal equipment due to the time-consuming full-band scanning due to the timeout of the RTP timer

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  • Method and device for recovering a volte call
  • Method and device for recovering a volte call
  • Method and device for recovering a volte call

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] The technical solution of the present invention can be applied to various communication systems, for example: Long Term Evolution (Long Term Evolution, LTE) / Enhanced Long Term Evolution (Long Term Evolution-advanced, LTE-A) system, New Air Interface (New Radio, NR) system Wait.

[0023] The terminal equipment (User Equipment, UE) in the embodiment of the present invention can also be referred to as a mobile terminal (MobileTerminal), mobile user...

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Abstract

The embodiment of the invention discloses a method and equipment for recovering a VoLTE (Voice over Long Term Evolution) call, and the method comprises the steps: executing historical frequency pointscanning if an RLF (Radio Link Function) occurs in a VoLTE call process; If recovery of the VoLTE call based on the historical frequency point scanning fails, frequency band scanning is executed, thefrequency band scanning comprises Q frequency bands in N frequency bands supported by scanning, the Q frequency bands comprise at least one unscanned frequency band in the N frequency bands, Q is smaller than N, and N is a positive integer larger than or equal to 2; And if recovery of the VoLTE call based on the frequency band scanning fails and the unscanned frequency band exists in the N frequency bands, executing historical frequency point scanning. According to the method provided by the embodiment of the invention, the possibility of VoLTE call drop caused by timeout of the RTP timer canbe reduced, and the probability of VoLTE call recovery is improved.

Description

technical field [0001] The present application relates to the technical field of communications, and more particularly to a method and device for resuming a VoLTE call. Background technique [0002] During a Voice over Long-Term Evolution (VoLTE) call, the terminal device will start the cell reconstruction process after a radio link failure (Radio Link Failure, RLF) occurs due to various reasons: 1) Start the T311 timer , perform cell synchronization to camp on, if a suitable cell can be found for synchronization and camp on, then turn off the T311 timer and start the T301 timer, and the terminal device initiates a re-establishment request; 2) If the T311 timer or the T301 timer times out, then The terminal equipment enters the idle state, turns on various frequency scanning modes, and seeks a suitable cell for downlink synchronization and resides there. [0003] Usually, the terminal device will record some historical cell information during downlink synchronization, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/16H04M7/00H04W48/20
Inventor 孙彦良洪岳谢宁宁
Owner VIVO MOBILE COMM CO LTD