A spacewire communication network fault recovery method and system

Abstract

The present invention discloses a SpaceWire communication network fault recovery method and system, wherein the method includes: when a fault occurs in the main communication link of a certain communication node in the SpaceWire communication network, activating the communication The standby communication link of node; Wherein, described certain communication node is redundantly connected with two or more routers; According to the link information of the standby communication link of described certain communication node, to SpaceWire communication network Perform dynamic optimization and reconstruction to obtain a reconstructed routing table; configure the reconstructed routing table in a router to restore the SpaceWire communication network from failure. The invention solves the fault recovery problem of the link disconnection error of the SpaceWire network under space radiation.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a SpaceWire communication network failure recovery method and system. Background technique [0002] The SpaceWire bus is a high-speed, point-to-point, full-duplex serial bus standard designed for aerospace missions. It has the characteristics of high transmission rate, low power consumption, upgradeability, and low cost. The highest communication rate can reach 400Mbps, and the topological structure is flexible. It plays an important role in solving the insufficient bus bandwidth of the current on-board data processing system, and has been more and more widely used in the aerospace industry. The aerospace environment is complex and harsh, and has high requirements for the reliability of the communication network. Due to the continuous reduction of the characteristic size of the device and the increase of the operating frequency, the probability of single-event m...

AI Technical Summary

Problems solved by technology

The aerospace environment is complex and harsh, and has high requirements for the reliability of the communication network. Due to the continuous reduction of the characteristic size of the device and the increase of the operating frequency, the probability of single-event multi-bit flipping in the SpaceWire circuit is greatly increased, and the sensitivity of the single-event transient is continuously enhanced. Therefore, the current application of SpaceWire bus communication technology still has the problem of insufficient fault tolerance to link failures.

In the star topology of the original SpaceWire communication network, if a link fails to re-establish the connection, the network communication will be partially disconnected, and the network cannot update information in time, so the correctness and reliability of network data transmission cannot be guaranteed. sex

In addition, it is inevitable that the network state will change due to network link or device damage. Obviously, the traditional static routing configuration cannot efficiently solve the problem of network failure recovery.

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