基于实时业务挤占的OFDMA系统的无线资源分配方案

为了在实时业务和非实时业务共享无线资源的场景中增加系统吞吐量，该文提出了一种基于实时业务挤占的无线资源分配方法，该方案首先实施统一调度，然后进行实时业务挤占过程。在保证对实时业务服务的情况下，实时业务挤占的无线资源分配方案提高了多用户分集效果，增加了系统的吞吐量。理论和仿真分析表明，与已有的传统的实时业务和非实时业务共享无线资源的调度方案相比，该方案能够提供更高的系统吞吐量和频谱效率。在实际应用中，该方案具有一定的可行性和可操作性。

An Occupying Proportional Fair Scheduling Based on OFDMA for Wireless Resource Allocation

In order to improve the system throughput when the wireless resource are shared by real and no-real services,a new type proportional fairness scheme for real time services occupying no-real time services is proposed,which first carries out union proportional fair scheduling,and then followes the procedure of real-time service occupying no-real-time service.The packet scheduling not only can guarantee the resource allocation of real time services,but also acquire better multi-user diversity gain.Theoretical analysis and simulation show that the suggested scheme can effectively improve the system throughput and spectrum efficiency in comparison with the existing approaches.