考虑业务优先级的多信道CRANET合作动态功率控制

Cooperative dynamic power control with prioritized traffic in multi-channel CRANET

针对多信道认知自组织网络(CRANET)中不同业务接入类型的优先级对次用户(SU)发射功率的影响,设计了次用户间业务传输的优先级感知因子,考虑到对主用户系统产生的累积干扰量约束,采用微分博弈建立了合作动态功率控制模型(CoDPCM),获得在总联盟下的合作动态功率控制最优解,同时,考虑到自私次用户的非合作性,建立了非合作动态功率控制模型(NoCoDPCM),获得了反馈Nash(纳什)均衡解,并从理论上进行了性能比较。仿真结果表明,与非合作动态功率控制模型相比,合作动态功率控制模型在发射功率、支付量和系统总体吞吐量等方面表现出较好性能。

Aiming at the impact of the priorities of differentiated access categories of data traffic on the transmitted power of secondary＂ users （SU） in multi-channel cognitive radio Ad Hoe network （CRANET）, the priority sensing factor for data transfer of SU was devised. Under the constraint of the accumulated power interference to primary users, the cooperative dynamic power control model （CoDPCM） was proposed by using differential game, and the optimal solution of the CoDPCM was derived under grand coalition. Moreover, due to the non-cooperation of the selfish SU, the non-cooperative dynamic power control model （NoCoDPCM） was also constructed, and the feedback Nash equilibrium solution was obtained. Theoretically, the performanee comparison was investigated. Simulation results demonstrated that the CoDPCM can achieve better performance than the NoCoDPCM in the case of transmitted power, payoff and total throughput.