Adaptive harvest-then-cooperate: Delay-aware wireless powered communication networks

Qizhong Yao, Aiping Huang, Hangguan Shan, Tony Q.S. Quek, Wei Wang

研究成果: Conference contribution

6 引文 斯高帕斯(Scopus)

摘要

In this paper, we consider a network where an access point (AP) wirelessly transfers energy to user equipments (UEs) and UEs use the harvested energy to communicate with the AP. Due to different radio propagation losses, the UEs far from the AP harvest little but consume much, thus suffering high transmission delay, while the UEs close to the AP has redundant energy. To reduce the average delay, we propose an adaptive harvest-then-cooperate (AHC) protocol, where every UE sends data to the AP directly or via other UEs acting as relays in a time-division multiplexing manner. Based on the load and energy distributions, the AP controls the transmit power and routing topology to minimize the average delay. To avoid data overflow in UE relays, we propose a method generating scheduling schemes given the transmit power and the routing topology. The average delay minimization is approximately modeled as a Markov decision process, and a policy iteration algorithm is employed to obtain the optimal combination of the power and the routing. Simulation results demonstrate the effectiveness of the AHC protocol in the delay minimization and reveal that the protocol can relieve the unbalance of the energy distribution.

原文English
主出版物標題SPAWC 2016 - 17th IEEE International Workshop on Signal Processing Advances in Wireless Communications
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781509017492
DOIs
出版狀態Published - 2016 八月 9
事件17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016 - Edinburgh, United Kingdom
持續時間: 2016 七月 32016 七月 6

出版系列

名字IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
2016-August

Conference

Conference17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016
國家United Kingdom
城市Edinburgh
期間16-07-0316-07-06

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Information Systems

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