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Cloud Java Networking BE-Engineering(CO/IT) BCS MCS BCA MCA MCM BSC Computer/IT MSC Computer/IT IEEE-2016

Optimal Partial Relaying for Energy-Harvesting Wireless Networks

In this paper, we assess the benefits of using partial relayingin energy-harvesting networks.
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Abstract

In this paper, we assess the benefits of using partial relayingin energy-harvesting networks. We consider a system composedof a source, a relay, and a destination. Each of the sourceand the relay has energy-harvesting capability and generates itsown traffic. The source is helped by the relay through a partialrelaying network-level cooperation protocol. The relay regulatesthe arrivals from the source by accepting only a proportion of thesuccessfully received packets at the relay. The relaying parameter,which determines the proportion of packets to be accepted, is selectedbased on the parameters of the network to ensure the stabilityof the source and the relay data queues. In this work, weprovide an exact characterization of the stability region of the network.We derive the optimal value of the relaying parameter tomaximize the stable throughput of the source for a given data arrivalrate to the relay. Also, we compare the stability region of theproposed strategy with partial relaying to the stability regions ofsimple transmission strategies. Finally, we consider the problem ofnetwork utility optimization in which we optimize over the valueof the relaying parameter for a given pair of data arrival rates forthe source and the relay.

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