Auction-based Green Relay Selection For Uplink Transmission In Relay-assisted Cellular Networks

Nowadays, with the rapid development of wireless communications, the demand for high capacity and long battery lifetime has drawn much of the people's attention. In order to solve these two problems, we consider using cooperative communication with the help of green relays. In this paper, we desire an auction market which consists of one base station, M green relays with energy harvesting function, N mobile terminals. Terminals pay to get the relay service and the relay sells it to get reward. In addition, there is a markup factor based on the residual energy of terminals, and relays have a markdown factor based on the instantaneous energy harvesting amount. Furthermore, we propose three different auction rules with different targets. Simulation results shows that the different rules perform diversely but all of them can increase system capacity and extend the lifetime of the mobile terminals.