A dama satellite network central station protection switching method

Abstract

A DAMA satellite network center station protection switching method, comprising the steps of: an active device and a backup device send heartbeat messages to each other; the active device closes its own transmission channel when it detects its own abnormality and does not receive the abnormal information of the backup device, and at the same time Send switchover instruction information to the backup device to trigger the switchover process; the backup device returns a switchover response to the active device when it is normal and receives the switchover instruction information from the active device or does not receive heartbeat messages from the active device for several times in a row, and at the same time Open the self-transmitting channel to complete the switching. Under the condition that the existing hardware structure remains unchanged and the hardware cost is not increased, the problems of long protection switching time and poor reliability are solved, and the detection and decision-making process of the protection switching of the master station are moved down to the master station equipment. The detection and decision-making of switching between station equipment can significantly shorten the protection switching time of the main station and improve the reliability of protection switching.

Description

A DAMA satellite network central station protection switching method technical field [0001] The present invention relates to satellite communications, and is particularly relevant to a DAMA satellite network central station protection switching method. Background technique [0002] DAMA (Assignment on Demand Multiple Addressing) satellite network system composition schematic diagram shown in Figure 1, network management system (NMS) is mainly responsible for management plane-related functions, providing user-related interfaces and interfaces for managing, configuring, and monitoring DAMA Relevant network elements in the star network system; the network control system (NCS) is mainly responsible for the control plane, and is responsible for the entire network resources (chain building, dismantling, etc.) chain) application, release, recovery, and the access functions of related network elements in the DAMA satellite network system, which are essentially responsible for th...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the detection and decision-making process of master-standby switchover of the NCS dominant master station in the existing DAMA satellite network system, there are problems such as long protection switchover time and poor reliability. The present invention provides a DAMA satellite network central station protection switchover method. The hardware architecture remains unchanged, and without increasing the hardware cost, the detection and decision-making process of the protection switching of the master station is moved down to the master station equipment, and the master station equipment detects and decides the switchover by itself, which can significantly shorten the protection switching time of the master station. Protection switching time, improving the reliability of protection switching

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