Coalitional Game Theoretic Approach for Cooperative Transmission in Vehicular Networks

摘要

Cooperative transmission in vehicular networks is studied by usingcoalitional game and pricing in this paper. There are several vehicles androadside units (RSUs) in the networks. Each vehicle has a desire to transmitwith a certain probability, which represents its data burtiness. The RSUs canenhance the vehicles' transmissions by cooperatively relaying the vehicles'data. We consider two kinds of cooperations: cooperation among the vehicles andcooperation between the vehicle and RSU. First, vehicles cooperate to avoidinterfering transmissions by scheduling the transmissions of the vehicles ineach coalition. Second, a RSU can join some coalition to cooperate thetransmissions of the vehicles in that coalition. Moreover, due to the mobilityof the vehicles, we introduce the notion of encounter between the vehicle andRSU to indicate the availability of the relay in space. To stimulate the RSU'scooperative relaying for the vehicles, the pricing mechanism is applied. Anon-transferable utility (NTU) game is developed to analyze the behaviors ofthe vehicles and RSUs. The stability of the formulated game is studied.Finally, we present and discuss the numerical results for the 2-vehicle and2-RSU scenario, and the numerical results verify the theoretical analysis.