Method and system for implementing self-adaptive active defense in wsn

Abstract

The invention discloses an adaptive active defense realizing method and system in a WSN (wireless sensor network), and relates to the field of WSN. The method comprises the following steps: A, nodes in the WSN are divided to different node domains according to a preset rule; B, the node in each node domain is set as monitoring node or common node; C, the monitoring node checks data packets passing by and judges whether the data packets are an attack packets or not; if the not, the data packets are forwarded according to a routing path; otherwise, the step D is performed; D, the monitoring node judges whether a common node exists in the current node domain; if so, the common node in the current node domain is activated to carry out defense; otherwise, the step E is performed; and E, the data packets are forwarded according to the routing path till reaching the monitoring node of the next node domain, and then the step D is performed. The method realizes active defense for WSN on the premise of low energy consumption by dividing node domain and setting monitoring node.

Description

technical field [0001] The present invention relates to the technical field of WSN (Wireless Sensor Network, wireless sensor network), in particular to a method and system for realizing self-adaptive active defense in WSN. Background technique [0002] WSN is a multi-hop self-organizing network formed by a large number of low-cost sensor nodes with sensing, computing, data processing and wireless communication capabilities deployed in the monitoring area through wireless communication. Network security design is a major requirement of WSN, but because WSN has many distinctive features, such as limited communication capability, limited power supply energy, limited computing power and storage space, dense sensor node configuration and flexible network topology, etc., WSN The security design of the network is more stringent than that of the traditional network. [0003] In recent years, there have been many studies on WSN security, which can be simply divided into two categori...

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Problems solved by technology

[0005] However, in the algorithm-level research of infrastructure security, due to the limited resources of nodes, it is impossible to effectively defend against network attacks. The attacking node will increase the overhead of network transmission

For system-level research, the self-healing system focuses more on the recovery of the bad state of the node itself, but does not consider the active defense against network attacks, so it cannot solve the problem of network attack defense, and its defense is only It is called passive defense; the immune system can well solve the problem of active defense against network attacks, but because the current research only stays at the level of how to correspond to the wireless sensor network and the artificial immune system, many restrictions on the wireless sensor network have not yet been solved. come up with a reasonable solution

Therefore, there is currently a lack of a reasonable mechanism and its system to achieve active defense against network attacks under the premise of low energy consumption

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