Paper Info
Title
Non-Uniform Deployment of Power Beacons in Wireless Powered Communication Networks
Abstract
In wireless powered communication networks (WPCNs), base station (BS) and power beacons (PBs) can offer supplement power for uplink transmission of user equipments (UEs). However, the aggregate power consumption of massively deployed PBs may exceed that of a BS. We propose a non-uniform deployment scheme for PBs in WPCNs, where a cell is divided into inner and outer areas, such that BS and PBs can cooperate to power UEs. To be more specific, a BS located in the center of a cell provides downlink power supply for the inner area UEs and uplink information decoding for all the UEs in the cell; while the PBs power UEs in the outer area. With multiple antennas, maximum ratio transmission and maximum ratio combining are adopted for downlink energy beamforming and uplink information reception. Considering a finite area of the network, we derive the distribution of the distance from a non-center-located UE to its nearest PB in the outer area. An optimization problem is formulated to minimize total average power consumption while satisfying BS average transmission power constraint and coverage probability threshold. Moreover, coverage probability is derived for performance evaluation. The numerical results show that the power consumption of the proposed scheme is reduced significantly compared to PB-only WPCNs.
Year
DOI
Venue
2019
10.1109/TWC.2019.2899098
IEEE Transactions on Wireless Communications
Keywords
Field
DocType
Lead,Wireless communication,Power demand,Uplink,Wireless sensor networks,Downlink,MIMO communication
Beacon,Base station,Beamforming,Telecommunications network,Wireless,Maximal-ratio combining,Computer network,Wireless sensor network,Mathematics,Telecommunications link
Journal
Volume
Issue
ISSN
18
3
1536-1276
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
Kai Liang101.01
Liqiang Zhao225733.36
Gan Zheng32199115.78
Hsiao-Hwa Chen46623425.11