效用及实时业务QoS联合保证的资源分配方案

Utility and Real Time Traffic QoS Jointly Guaranteed Resource Allocation Scheme

为了有效利用和公平分配有限的网络资源,从而优化网络性能,提高社会福利,该文提出了一种效用及实时业务QoS联合保证的资源分配方案,将效用模型与具有不同服务质量需求的业务相结合,引入需求带宽和期望带宽,建立优化模型。方案不仅体现了资源分配效率的要求,达到系统效用的最优,同时优先保证实时业务的QoS要求,并达到QoS保证业务和尽力而为(Best Effort,BE)业务之间的公平分配。仿真结果表明,提出的方案较传统方案有效地提高了系统总效用,实现了面向服务的资源分配目标,优化了网络系统的整体性能。

Resource allocation plays a significant role in current wireless communications.In order to improve the performance of the whole wireless network and social welfare,the limited network resources should be allocated efficiently and fairly.In this paper,a jointly guaranteed resource allocation scheme is proposed,which firstly introduces the required bandwidth and the desired bandwidth,and then combines the utility model with services that have different QoS（Quality of Service） requirements.An optimized model is built and the corresponding resource allocation scheme is proposed.The scheme could guarantee different QoS requirements,while the utility of the system could be improved.Furthermore,it can realize the fairness allocation between QoS and BE（Best Effort） traffics.The simulation results show that the proposed scheme can effectively improve the system utility compared with the traditional method,meanwhile,the goal of service oriented allocation is achieved,and the performance of the whole system is optimized.