Reliability Analysis for Peer Selection in D2D Networks
Muhammad Saleem Khan, Sobia Jangsher · 2018
With the advent of D2D communication and social computing i.e Online Social Networks (OSNs); many challenges have surfaced which are yet to be addressed. Among these, one of the most important is the selection of peer, may it be for relay selection, Simultaneous Wireless Information and Power Transfer (SWIPT) or opportunistic communication during disaster. Conventionally peer selection is performed based on high offered data rate or low latency whichever is desirable; however, reliability of peer for successful transmission is ignored which results in premature termination of session. Using OSNs and social relations among people at physical layer, in this paper we have modeled intended communication session at D2D network layer in a single cell scenario where a reliable device is selected from proximity among competing nodes. Joint distribution functions have been derived considering parameters defining human social relation in physical and OSN's domain. Weighted dependency b/w random variables i.e number of interactions (E) between nodes, mean contact duration (ΔT) and mean interval b/w interactions (ΔI) have been modeled as probability distributions to study the reliability of User Equipment (UEs) above certain variable threshold. Performance of theoretical model has been verified using simulation scenario where time based distribution of nodes has been carried out using Independent Poisson Point Process (IPPP). Simulation results show how reliability of a node is affected with its mobility and social interaction.