Wireless Energy Transfer Enabled D2D in Underlaying Cellular Networks

Wireless powered device-to-device (D2D) communications can prolong the lifetime of energy constrained D2D transmitters. This paper proposes an analytical model for D2D communications powered by both ambient radio frequency (RF) signals from base stations (BSs) and power beacons (PBs) in a multichannel downlink cellular network to enhance harvested energy at D2D transmitters without changing the original cellular networks. With fixed transmit powers of D2D transmitters, we derive a probability for D2D transmitters to harvest enough energy for D2D communications based on stochastic geometry. We investigate the profit gained by a cellular system with RF wireless energy transfer enabled D2D (WET-D2D), where the profit is defined as the difference between the revenue earned from downlink data transmission from BSs and D2D communications and the energy cost for BSs and PBs. Numerical results verify that a maximum profit of a cellular system with WET-D2D is achieved with a well-designed PB and proper transmit powers at D2D transmitters.

[1]  Derrick Wing Kwan Ng,et al.  Simultaneous wireless information and power transfer in modern communication systems , 2014, IEEE Communications Magazine.

[2]  Kaibin Huang,et al.  Enabling Wireless Power Transfer in Cellular Networks: Architecture, Modeling and Deployment , 2012, IEEE Transactions on Wireless Communications.

[3]  Derrick Wing Kwan Ng,et al.  Practical Non-Linear Energy Harvesting Model and Resource Allocation for SWIPT Systems , 2015, IEEE Communications Letters.

[4]  Ying-Dar Lin,et al.  Multihop cellular: a new architecture for wireless communications , 2000, Proceedings IEEE INFOCOM 2000. Conference on Computer Communications. Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies (Cat. No.00CH37064).

[5]  Qing Wang,et al.  A Survey on Device-to-Device Communication in Cellular Networks , 2013, IEEE Communications Surveys & Tutorials.

[6]  Jeffrey G. Andrews,et al.  A Tractable Approach to Coverage and Rate in Cellular Networks , 2010, IEEE Transactions on Communications.

[7]  Ekram Hossain,et al.  Cognitive and Energy Harvesting-Based D2D Communication in Cellular Networks: Stochastic Geometry Modeling and Analysis , 2014, IEEE Transactions on Communications.

[8]  Seung-Yeon Kim,et al.  Profit Versus Energy Efficiency Maximization in Regular Topology Cellular Networks , 2016, IEEE Communications Letters.

[9]  Kang G. Shin,et al.  Transmit Power Control for D2D-Underlaid Cellular Networks Based on Statistical Features , 2017, IEEE Transactions on Vehicular Technology.

[10]  Kwang-Cheng Chen,et al.  Operator’s Economy of Device-to-Device Offloading in Underlaying Cellular Networks , 2017, IEEE Communications Letters.

[11]  Ekram Hossain,et al.  Two-Tier HetNets with Cognitive Femtocells: Downlink Performance Modeling and Analysis in a Multichannel Environment , 2014, IEEE Transactions on Mobile Computing.