Abstract

In wireless sensor networks, the average cycle method is used to analyze the proposed protocol: the discrete time non- persistent CSMA protocol with functions of monitoring and multichannel mechanism based on binary tree conflict resolution; accurate mathematical expressions of related indicators are got through rigorous mathematical derivation. By simulation, the correctness of the model is verified; by comparing to the system performance with the conventional non-persistent CSMA protocol, the former is more stable and controllable. On the basis of ensuring fairness in the allocation of resources, more network resources is assigned to the channel of higher priority, channel utilization improved greatly. With multichannel mechanism, system throughput has been significantly improved. Keywords-wireless sensor network; conflict resolution; functions of monitoring; multichannel; non-persistent CSMA; throughput

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