车联网中V2R通信功率分配策略

V2R communication power allocation scheme for VANETs

针对车载应用对车辆与路侧单元(V2R)的通信质量及系统吞吐量要求越来越高,提出V2R通信功率分配策略,以提高通信链路质量及系统的吞吐量。该策略利用博弈论对功率分配过程进行分析并找出最优分配方案。当效用函数经过多次迭代而达到纳什均衡时,表明系统已经获得最优的功率分配方案。仿真结果表明,本文提出的车联网功率分配策略有利于减小各通信链路之间的干扰,且达到了提升系统吞吐量的目的。

Vehicle applications makes the requirements on Vehicle-to-Roadside（V2 R） communication quality and system throughput more and more higher. V2 R communication power allocation strategy is proposed to improve the quality of communication links and the system throughput. The strategy adopts the game theory to analyze the power allocation process and find out the optimal allocation scheme. When the utility function reaches Nash equilibrium through iterations, it indicates that the system has obtained the optimal power allocation scheme. Simulation results show that the proposed power allocation strategy is helpful to reduce the interference between communication links, and the purpose of improving the system throughput is achieved.