Energy efficient Cross Layer Multipath Routing for Image Delivery in Wireless Sensor Networks
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초록
Owing to limited energy in wireless devices power saving is very critical to prolong the lifetime of thenetworks. In this regard, we designed a cross-layer optimization mechanism based on power control in whichsource node broadcasts a Route Request Packet (RREQ) containing information such as node id, image size,end to end bit error rate (BER) and residual battery energy to its neighbor nodes to initiate a multimediasession. Each intermediate node appends its remaining battery energy, link gain, node id and average noisepower to the RREQ packet. Upon receiving the RREQ packets, the sink node finds node disjoint paths andcalculates the optimal power vectors for each disjoint path using cross layer optimization algorithm. Sinkbased cross-layer maximal minimal residual energy (MMRE) algorithm finds the number of image packetsthat can be sent on each path and sends the Route Reply Packet (RREP) to the source on each disjoint pathwhich contains the information such as optimal power vector, remaining battery energy vector and number ofpackets that can be sent on the path by the source. Simulation results indicate that considerable energy savingcan be accomplished with the proposed cross layer power control algorithm.
Abstract
Owing to limited energy in wireless devices power saving is very critical to prolong the lifetime of thenetworks. In this regard, we designed a cross-layer optimization mechanism based on power control in whichsource node broadcasts a Route Request Packet (RREQ) containing information such as node id, image size,end to end bit error rate (BER) and residual battery energy to its neighbor nodes to initiate a multimediasession. Each intermediate node appends its remaining battery energy, link gain, node id and average noisepower to the RREQ packet. Upon receiving the RREQ packets, the sink node finds node disjoint paths andcalculates the optimal power vectors for each disjoint path using cross layer optimization algorithm. Sinkbased cross-layer maximal minimal residual energy (MMRE) algorithm finds the number of image packetsthat can be sent on each path and sends the Route Reply Packet (RREP) to the source on each disjoint pathwhich contains the information such as optimal power vector, remaining battery energy vector and number ofpackets that can be sent on the path by the source. Simulation results indicate that considerable energy savingcan be accomplished with the proposed cross layer power control algorithm.
참고문헌 (16)
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