Comprehensive k-coverage scheduling cross-layer directed diffusion routing protocol for wireless sensor networks

Abstract

The invention firstly provides a novel K-coverage judgment algorithm in a wireless sensor network, then provides a novel distributed K-coverage scheduling algorithm by introducing residual energy of nodes into coverage scheduling and considering the residual energy of the nodes, provides a comprehensive distributed K-coverage scheduling and routing cross-layer design method through the relation of energy consumption of the nodes and particularly provides a novel comprehensive K-coverage scheduling directed diffusion routing protocol. In the gradient adjustment process of the novel directed diffusion routing protocol, coverage degree parameters of the nodes are added, the probability of taking the nodes with large coverage redundancy as intermediate forwarding nodes is increased, and the energy consumption of the nodes is further balanced. Simulation results show that the energy consumption of the novel cross-layer directed diffusion routing protocol is far lower than that of the original directed diffusion routing protocol and the directed diffusion routing protocol combined with a typical scheduling algorithm.

Description

technical field [0001] The invention belongs to the field of wireless sensor network support and network technology, and is also a cross synthesis of the two technical fields. Background technique [0002] Node coverage is one of the three supporting technologies of Wireless Sensor Network (WSN). WSN is usually composed of a large number of densely distributed nodes, and there is a large degree of redundancy in node layout. For the normal completion of network application tasks, it is not necessary for all nodes to be in working state. Therefore, in the case of meeting the coverage requirements, the nodes are divided into several disjoint node sets, also called coverage sets, and only one coverage set is required to be in the working state for a period of time. For multiple different coverage sets, they are scheduled and used according to certain rules, which is called coverage scheduling. [0003] In some applications of WSN, there are special requirements for the data c...

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Problems solved by technology

[0004] Most WSN coverage scheduling methods only consider the construction and scheduling of coverage sets from the perspective of node sensing and communication coverage, and do not fully consider the remaining energy of nodes, that is, the lifetime of coverage sets.

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