Adaptive charging strategy for wireless rechargeable sensor networks
In wireless rechargeable sensor networks,the reasonable arrangement of charging scheduling is the key to ensuring the survival rate of network nodes.To solve this problem,the paper was based on a clustered wireless sensor network,dividing nodes into important nodes and ordinary nodes,which were charged by two mobile charging equipments(WCEs)collaborate in real-time on demand.Based on the cur-rent energy of mobile charging equipment,an adaptive charging strategy was proposed to adjust the char-ging method according to the urgency of the node's energy demand when there were too many charging re-quests.The simulation results show that the proposed algorithm performs better than other scheduling schemes in terms of the number of surviving nodes,total residual energy,mobile loss ratio and the occur-rence time of the first dead node.This algorithm provides a solution for the uncertainty of charging tasks and the collaborative problem of multiple charging equipment in practical application scenarios,which ex-tends the life of the network to a certain extent.
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