基于多目标优化的BRadio系统资源调度算法研究

不同特性和需求的业务共存是未来网络融合所必然带来的状况,也是影响业务性能的主要问题之一.首先简介基于BRadio的专用宽带无线接入网标准,然后通过分析业务特性,在MAC层上提出了一种多目标优化的资源调度算法.该算法包括基于带宽预留的接入控制算法和基于有限状态机的分组调度算法,针对系统带宽利用率、业务分级、时延性能和公平性进行了综合优化.最后通过仿真证明该算法能有效地在保证系统带宽利用率的情况下体现业务分级特性,并能够在时延性能和公平性之间取得很好的平衡.

Resource Scheduling Algorithm in BRadio System based on Multi-objective Optimization

How to improve the performance of services with different priority and QoS demand is a key problem caused by network convergence in the future. After a brief introduction about BRadio system, the services in BRadio system are investigated and a resource scheduling algorithm for multi-objective optimization on MAC layer is proposed. The algorithm contains the method of admission control and packet scheduling, which provides a tradeoff of bandwidth efficiency, priority, delay and fairness. The simulation results show that the algorithm can increase the access performance with high bandwidth efficiency, and guarantee both delay and fairness.