Fault-tolerance method in wireless sensor network

Abstract

The invention discloses a fault-tolerance method in a wireless sensor network. The fault-tolerance method has the advantages that a source node transmits original data through a plurality of transmission paths with mutually disjoint nodes, so that, in case of transmission failure of a certain middle sensor node or the single transmission path, the impact on the successful transmission of the original data is very small, thereby ensuring the accurate transmission of the original data; the source node carries out the erasure correction encoding of information codes at a source node end, then as long as the lost information is in the error-correcting range of erasure codes, a base station node end can recover the original data, thereby being more conductive to the data transmission. The method dynamically changes the number of the transmission paths needed by transmission by utilizing the index weighted averaging method according to the link state of the wireless sensor network environment, thereby improving the fault-tolerance ability of a system while improving the success rate of code element transmission, reducing the total communication traffic during the transmission and further achieving the maximum transmission success rate by utilizing the minimum transmission paths.

Description

technical field [0001] The invention relates to a sensor network technology, in particular to a fault tolerance method in a wireless sensor network. Background technique [0002] The research on Wireless Sensor Networks (WSN, Wireless Sensor Networks) originated in the 1970s and was first applied in the military field. In 1980, the Distributed Sensor Networks project (DSN, Distributed Sensor Networks) of the US Defense Advanced Research Agency (DARPA, Defense Advanced Research Projects Agency) opened a precedent for modern sensor network research. Subsequently, with the rapid development of various technologies such as sensors, embedded computing systems, distributed information processing and wireless communication networks, wireless sensor networks have become a new information acquisition and processing technology. A wireless sensor network is a task-oriented wireless network composed of a group of multiple sensor nodes distributed in a set position in the form of a wire...

AI Technical Summary

Problems solved by technology

[0006] 3. Wireless sensor networks are still an emerging field of research and engineering, and the best way to deal with specific problems is still unclear

Since the technology and expected application of wireless sensor networks are still developing rapidly, it is difficult to predict the specific fault-tolerant processing technology in wireless sensor networks

Images