Autonomous detection method for abnormal network disconnection of satellite mobile communication service

Abstract

The invention discloses an autonomous detection method for abnormal network disconnection of a satellite mobile communication service. The autonomous detection method comprises the following steps: detecting whether media content sent to a core network by a terminal is active or not during a call by an MGW (Media Gateway), and determining a network connection state of a satellite terminal through a dual-check mechanism of media stream detection and signaling query. The method has the beneficial effects that after the satellite terminal establishes a call call at the 3G core network side, the core network does not start periodic signaling query, so that the signaling interaction process after the call and the influence on the call quality are reduced; the core network MSC controls the core network MGW to start to detect the content of the media stream through a method for detecting the inactive event of the media stream, and the network disconnection detection process of the whole satellite terminal can be controlled; and a media and signaling dual detection mechanism is adopted, so that the detection accuracy of the networking state of the satellite terminal is improved.

Description

technical field [0001] The invention relates to an autonomous detection method for network disconnection, in particular to an autonomous detection method for abnormal network disconnection of a satellite mobile communication service, and belongs to the technical field of 3G fusion communication. Background technique [0002] During the call of the satellite mobile communication terminal, the satellite terminal equipment may not be able to communicate with the satellite normally due to factors such as geographical location and environment (passing through the tunnel), weather, and battery exhaustion, and the on-hook signal of the satellite terminal may not be transmitted to the core network normally. MSC (Mobile Switching Center) equipment. In order to prevent the problems of over-long bills and calls and media resource hangups, the 3G core network usually uses the method of signaling query to know the network connection status of satellite terminals. [0003] The signaling ...

AI Technical Summary

Problems solved by technology

Due to the shortage of air interface resources, the signaling status query will temporarily use the call channel to affect the call quality. When a large number of terminals are talking online, the frequent signaling status query will occupy the signaling resources of the access network and the core network side, which will affect the stability of the system.

[0004] For the existing published application number: CN107332735A, a network communication method for automatic reconnection after disconnection, which solves the problem that the network communication cannot be detected in time when the automatic reconnection occurs when the communication between the terminal and the server is abnormal. status issues;

[0005] For the existing published application number: CN112996102A, a satellite terminal connection state management method, device, gateway device, integrated communication system and storage medium, which solves the problem of the integrated communication scenario between the satellite communication system and the 5G core network The problem of wasting network resources that is prone to occur

[0006] In addition, in the existing technology, the connection status of the satellite terminal during the call phase is generally obtained by the method of signaling query in the existing technology of the 3G core network, and it is necessary to locate and send a query message to the satellite terminal to obtain the query result for confirmation, due to the shortage of air interface resources , the query signaling will temporarily occupy the call channel and affect the call quality, and when there are many online call terminals, there will be a large number of query messages between the 3G core network and the satellite terminal, which will increase the burden on the satellite access network

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