基于用户公平性的OFDMA业务分集资源调度算法

提出了一种基于用户公平性、适用于多用户传多业务的OFDMA移动通信系统的资源调度算法。该算法采用跨层设计方案,综合考虑MAC层业务的QoS要求和物理层的信道状态信息进行自适应资源调度,以实现提高系统容量和保证用户公平性之间的折中与优化。仿真结果表明,相对于未采用业务分集的方案,该文所提算法能够显著的提高系统容量;同时,相对于已有的基于容量最大化的算法,所提算法在保证用户公平性方面有明显的优势。

Resource Allocation Algorithm in OFDMA Traffic-Diversity System Based on Fairness

A new resource allocation algorithm, which could ensure the fairness and meet the demand that multiple users transmit multiple traffics simultaneously in OFDMA mobile communication system,is proposed.The algorithm is mainly based on the cross layer design. It takes into consideration both the QoS requirements of services in the MAC layer and the channel status information in the physical layer, hence makes adaptive resource scheduling to make a trade off between the fairness and system capacity. Finally,the simulation results,show that the improved system has a higher capacity than the one not applying the traffic diversity scheme. Besides, the proposed algorithm has an advantage on the performance of ensuing fairness compared with the one that based on the highest capacity.