A fault recovery method and system

A fault recovery and abnormal technology, applied in wireless communication, network data management, electrical components, etc., can solve the problems of train communication system interruption, inability to apply rail transit scene fault recovery, UE unreachable, etc., to achieve the effect of fault recovery

Inactive Publication Date: 2019-12-20
POTEVIO INFORMATION TECH CO LTD
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Problems solved by technology

In this mode, even if the terminal changes lines, its public data network gateway (PGW) remains unchanged. If the PGW fails, the UE will be unreachable, the train communication system will be interrupted, and normal operation will not be possible.
[0003] The existing 3GPP PGW fault recovery methods all use dynamic IP address allocation and require different EPCs for backup scenarios. Therefore, they cannot be applied to rail transit scenarios for fault recovery

Method used

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Embodiment Construction

[0015] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] The core idea of ​​the present invention is: when the SGW detects that the connected PGW is abnormal, it triggers the binding of the static IP address of the UE on the PGW with the local PGW (ie, the visited location), and then the local PGW initiates a routing update, so that the UE The static IP address is only bound to the local PGW and displayed only in the visited PGW.

[0017] figure 1 It is a schematic flow diagram of the method of the embodiment of the present invention, such as figure 1 As shown, the embodiment of the fault recovery method mainly includes:

[0018] Step 101, the service gateway SGW in the rail transit area detects in real time whether the public data network gateway PGW linked to the SGW is abnormal.

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Abstract

The invention discloses a fault recovery method and system. The method comprises the following steps: a service gateway SGW in a rail transit area detects whether a public data gateway PGW linked with the SGW is abnormal in real time; and when it is detected that the PGW is abnormal, the SGW triggers a corresponding mobility management entity MME to bind a static IP address of user equipment UE with a local PGW, wherein the UE is UE attached to the abnormal PGW in the coverage area of the SGW, and the MME is an MME serving the UE at present. By adoption of the fault recovery method and system disclosed by the invention, the fault recovery in a rail transit line transfer scene can be realized.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method and system for rail transit line change and handover fault recovery. Background technique [0002] The vehicle-mounted user equipment (UE) of the LTE system has its special requirements in rail transit applications. When the vehicle-mounted UE operates across lines and offices, it usually uses Home-Routed to ensure business continuity and Static IP address assignment. In this mode, even if the terminal changes lines, its public data network gateway (PGW) remains unchanged. If the PGW fails, the UE will be unreachable, the train communication system will be interrupted, and normal operation will not be possible. [0003] The existing 3GPP PGW fault recovery methods all use dynamic IP address allocation and require different EPCs for backup scenarios. Therefore, they cannot be applied to rail transit scenarios for fault recovery. Contents of the invention [0004] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08H04W8/26H04W88/16
CPCH04W8/26H04W24/08H04W88/16
Inventor 杨美荟
Owner POTEVIO INFORMATION TECH CO LTD
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