基于用户公平性的OFDMA业务分集资源调度算法  

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

作　　者：郑吉妮[1] 秦家银[1] 刘梁杰[1] 

机构地区：[1]中山大学信息科学与技术学院电子与通信工程系,广东广州510275

出　　处：《中山大学学报（自然科学版）》2010年第4期53-57,62,共6页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(60672048);广州市科技计划资助项目(2008Z1-D151);国家自然科学基金;广东省联合基金资助项目(U0635003)

摘　　要：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。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.

关 键 词：OFDMA 资源调度 业务分集 用户公平性 

分 类 号：TN929[电子电信—通信与信息系统]