Wireless sensor network intrusion tolerance method and system based on tree topology

Abstract

The invention provides a wireless sensor network tolerance system based on tree topology. The system comprises an intrusion detecting subsystem, a safety management center and an attacking feature matching bank. The intrusion detecting subsystem can judge a network abnormal situation through node flow and energy analysis, and by arranging threshold value warning, results are uploaded to the safety management center at the same time. For the wireless sensor network abnormal situation, attack matching can be carried out through the attacking feature matching bank, meanwhile, corresponding processing is carried out according to attack types, and network lifetime is prolonged. For attacked backbone nodes in a network, a redundant node rousing strategy is used, redundant nodes are roused to take over current attacked nodes, and network normal operation is kept. For attacked member nodes in the network, an isolation burying strategy is used, node ID is recorded, and using by attacking nodes is avoided.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a wireless sensor network intrusion tolerance technology. Background technique [0002] The wireless sensor network is composed of a large number of cheap miniature sensor nodes, and is deployed in a certain detection area, forming a self-organized multi-hop network through wireless communication; it can complete cooperative perception, collection and processing of network coverage Information about objects in the area and sent to observers etc. However, due to the openness of wireless sensor networks, they are generally deployed in an open environment without monitoring, which makes them face various threats and attacks, and its security issues are particularly important. [0003] In the security technology of wireless sensor networks, security technologies such as network access authentication, key management, access control, and intrusion detection have been ...

AI Technical Summary

Problems solved by technology

However, the intrusion detection system has problems such as high false alarm rate, false negative rate, and time delay between attack and detection in terms of performance, and even if malicious attacks can be detected, the system still cannot prevent the damage caused by the intrusion.

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