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Volte service recovery method, system and device

A service recovery and called side technology, applied in the communication field, can solve the problems of increasing the recovery delay and reducing the success rate of recovery, etc., to achieve the effect of reducing the number of nodes, reducing transmission delay, and avoiding signaling storms

Active Publication Date: 2020-11-06
XINYANG BRANCH HENAN CO LTD OF CHINA MOBILE COMM CORP
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Problems solved by technology

[0005] The embodiment of the present invention provides a VoLTE service restoration method, system and device, which are used to overcome the problem that in the prior art, when the VoLTE service is restored, the transmission of fault signaling needs to pass through a large number of nodes and transmission equipment, which increases the recovery time delay. , which reduces the success rate of recovering defects

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  • Volte service recovery method, system and device

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Embodiment Construction

[0052] 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 only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0053] For ease of understanding, the following firstly introduces the existing VoLTE restoration method when PCRF fails (including the PCRF failure of the calling side and the PCRF failure of the called side) according to the current 3GPP specifications.

[0054] (1) After the PCRF failure on the calling side, the existing calling recovery scheme

[0055] Since at least two normally working PCRFs are set in the network, and after one PCRF fails, the network (...

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Abstract

The present invention relates to a VoLTE service recovery method, system and device. In this method, after confirming at the calling side P-CSCF that the calling side PCRF itself or its route fails, the calling side P-CSCF can be invoked to send the first message containing the calling side PCRF failure information to the calling side UE. A message, so that after receiving this message, the UE can autonomously initiate corresponding fault contingency measures to restore the VoLTE session service. Compared with the recovery process of the VoLTE session service in the existing 3GPP protocol specification, the method provided by the embodiment of the present invention changes the signaling transmission process in the recovery process, and can directly send the fault information to the UE so that the UE can perform the service spontaneously Recovery, so as to reduce the number of nodes passed through when the fault information is forwarded, reduce transmission delay, avoid signaling storms caused by inconsistent processing capabilities of each node, and ensure that VoLTE session services can return to normal as soon as possible.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular to a VoLTE service recovery method, system, and device. Background technique [0002] With the promotion and popularization of high-definition voice, more and more users use VoLTE (Voice over LTE) to make calls. The process of VoLTE calls is relatively complicated, which requires the network to maintain sufficient robustness and strong disaster recovery capabilities. It is necessary to ensure that the caller can quickly recover to the IMS network, and it is also necessary to ensure that subsequent calls can be made through VoLTE. [0003] PCRF (Policy and Charging Rules Function, policy and charging rules functional unit) is a relatively important network device for the network. Generally speaking, at least two normally working PCRF devices need to be set up in a network. When one of them fails, according to the current 3GPP specifications, UE1 c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/703H04L12/24H04L45/28
CPCH04L41/0654H04L45/28
Inventor 张秀成刘召阳
Owner XINYANG BRANCH HENAN CO LTD OF CHINA MOBILE COMM CORP
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