Priority-based Combined Power and Rate Control for Integrated Voice and Data Traffic
Fan Ping-zhi · Journal of the China Railway Society · 2008
A priority-based combined power and rate control(PBCPRC) algorithm is proposed for the uplink of a cellular system with integrated voice and data traffic.When allocating system resources,on the basis of the real-time characteristics of voice service,all voice users are assigned higher priority.At the same time,the algorithm maximizes the throughput of data service provided that the quality of voice service is ensured.Simulation results demonstrate that under heavy load,the proposed algorithm can provide better performance than the non-priority CPRC.Since the average transmission power of the voice users and the data users are reduced by 43% and 68% respectively,the outage probability of the voice users are decreased by 30% and the average data rate of the data users are reduced by 9%,the proposed algorithm gives a better trade-off between the throughput of data service and the outage probability of voice service.