DAMA satellite network center station protection switching method

Abstract

The invention discloses a DAMA satellite network center station protection switching method. The method comprises the steps that active equipment and backup equipment send heartbeat messages to each other; when the active equipment detects that the active equipment is abnormal and does not receive abnormal information of the backup equipment, a transmitting channel of the active equipment is closed, and meanwhile, switching indication information is sent to the backup equipment to trigger a switching process; and when the backup equipment is normal and receives the switching indication information of the active equipment or does not receive heartbeat messages of the active equipment continuously for multiple times, a switching response is returned to the active equipment, and a transmitting channel of the backup equipment is opened to finish switching. Under the condition that the existing hardware architecture is not changed and the hardware cost is not increased, the problems of long protection switching time and poor reliability are solved, the detection and decision processing of the protection switching of the master station are transferred to the master station equipment, and the master station equipment detects and decides the switching by themselves, so that the protection switching time of the master station can be remarkably shortened. The reliability of protection switching is improved.

Description

technical field [0001] The invention relates to satellite communication, in particular to a protection switching method for a central station of a DAMA satellite network. Background technique [0002] DAMA (Demand-Assigned Multiple Addressing) satellite network system composition diagram as shown in figure 1 As shown, the network management system (NMS) is mainly responsible for the related functions of the management plane, providing user-related interfaces and interfaces for managing, configuring, and monitoring related network elements in the DAMA satellite network system; the network control system (NCS) is mainly responsible for the control plane , is responsible for the application, release, and recovery of network-wide resources (link building and tearing down), and the access functions of related network elements in the DAMA satellite network system. It is essentially responsible for the management of low-level signaling of the entire network. The central station (H...

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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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