Data consistency method based on unreliable network

Abstract

The invention provides a data consistency method based on an unreliable network, which is used for achieving data consistency through a fault-tolerant mechanism in a condition of unreliable network transmission. The method comprises the following steps: 1, a redundant fault-tolerant architecture is defined; 2, in the condition of unreliable network transmission, a hypothetical condition for data consistency is defined; and 3, a data interaction process and a redundant information processing method are defined. Thus, the method of the invention can be used in important fields such as space andmilitary, thereby enhancing the fault-tolerant ability of the system and the reliability of the key equipment; and the method is applicable to a distributed architecture and can be promoted for faulttolerance for remote network data communication.

Description

technical field [0001] The invention belongs to the field of fault tolerance, and in particular relates to a data consistency method based on an unreliable network, which is used to achieve data consistency through a fault tolerance mechanism under the condition of unreliable network transmission. Background technique [0002] The on-board control computer is a key component of the spacecraft, and its reliability is directly related to the normal operation of the spacecraft. Due to the complexity and variety of the space environment, we do not fully know the failure modes of the components in the space environment. The fault-tolerant method in the case of unclear mode makes it possible to continue to complete the expected task in the case of partial hardware failure. Tolerating arbitrary failure modes is called Byzantine Resilience. The basic method is to use redundant computers, provide them with exactly the same input, execute the same code, run synchronously, and achieve ...

AI Technical Summary

Problems solved by technology

However, with the development of spacecraft technology and the expansion of spacecraft scale, it becomes more and more difficult for the centralized architecture to meet the technical needs

Under the distributed architecture, redundant computers can be interconnected through the network, and the reliability of communication cannot be guaranteed due to the possible failure of the network itself (such as network switch failure or network link failure, etc.)

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