Coverage Probability of Hierarchical Wireless Networks with Hybrid Powering/Relaying Nodes (Invited Paper)

In this paper, by deploying hybrid relaying nodes (HNs), capable of both, data relaying and power radiation, the technique of wireless power transfer is integrated into legacy wireless communications networks. In particular, applying the nearest-neighbour criterion to associate HNs to base stations, or user equipments (UEs) to HNs, a two-tier hierarchical wireless network is developed. Using stochastic geometry tools, the transmission probability of UEs and the coverage probability of uplink data transmission are investigated. Moreover, to optimize the coverage probability for given densities of UEs and base stations, the optimal HN density is derived. Simulation results demonstrate the effectiveness of the developed analyses.