Evaluation method for importance of sensor network node

Abstract

The invention discloses an evaluation method for the importance of a sensor network node, and relates to the technical field of wireless sensor network communication. The evaluation method comprises the following steps of: S1, establishing an information transfer routing table of a sensor network, and confirming a topological structure of the sensor network; S2, collecting energy information of all nodes in the sensor network according to the routing table; S3, judging whether a node with exhausted energy exists, and going to step S4 if the node with exhausted energy exists, or calculating the importance of each node according to the topological structure contribution and remaining energy of each node and going to step S2 if the node with exhausted energy does not exist; and S4, calculating operation times of the sensor network as a life cycle of the sensor network. When the evaluation method is adopted, the importance of the sensor network node can be calculated more accurately, and therefore, the destruction resistance of the sensor network can be improved through protecting the importance of the node.

Description

technical field [0001] The invention relates to the technical field of wireless sensor network communication, in particular to a sensor network node importance evaluation method. Background technique [0002] The sensor network is a comprehensive intelligent information system that integrates information collection, information transmission, and information processing. It is a hot spot in the research and development of the current information field. Monitoring, medical monitoring, space exploration, urban traffic management, warehouse management and other military and civilian fields. In the practical application of sensor networks, it is generally necessary to deploy a large number of sensor nodes. Since the nodes often work in harsh environments and usually use batteries with limited energy to provide energy, sensor networks are prone to failure due to energy depletion or being affected by nature. In addition, the purposeful damage to the sensor network will directly or ...

AI Technical Summary

Problems solved by technology

[0006] (1) The existing node importance evaluation methods do not consider the remaining energy of nodes and other issues, and their evaluation methods are not suitable for sensor networks;

[0007](2) Most of the existing node importance evaluation methods adopt a single index evaluation method, and the evaluation effect is uncertain and incomplete

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