Open AccessOpportunistic distributed channel access for a dense wireless small‐cell zone
Author(s) -
Goonewardena Mathew,
Yadav Animesh,
Ajib Wessam,
Elbiaze Halima
Publication year - 2016
Publication title -
wireless communications and mobile computing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.42
H-Index - 64
eISSN - 1530-8677
pISSN - 1530-8669
DOI - 10.1002/wcm.2642
Subject(s) - nash equilibrium , computer science , macrocell , channel (broadcasting) , computer network , uniqueness , telecommunications link , channel state information , wireless , telecommunications , mathematical optimization , mathematics , base station , mathematical analysis
This paper considers uplink channel access in a zone of closed‐access small‐cells that is deployed in a macrocell service area. All small‐cell user equipments (SUEs) have access to a common orthogonal set of channels, leading to intercell interference. In addition, each channel forms a separate collision domain in each cell, thus can be successfully used only by one SUE of that cell. This paper proposes two non‐cooperative Bayesian games, G 1 and G 2 , that are played among the SUEs. G 1 assumes the availability of channel state information at the transmitters, while G 2 assumes the availability of only the distribution of the channel state information. Each SUE can choose to transmit over one of the channels or not to transmit. The emphasis of the paper is on the set of symmetric threshold strategies where the Nash equilibrium is fully determined by a single parameter. The existence and uniqueness of pure Bayesian–Nash symmetric equilibrium of G 1 in threshold strategies and mixed Bayesian–Nash symmetric equilibrium of G 2 in uniformly distributed threshold strategies are proven. Numerical results corroborate the theoretical findings and benchmark against another decentralized scheme. Copyright © 2015 John Wiley & Sons, Ltd.