OFDMA系统中实时业务的资源分配与调度算法

Resource allocation and scheduling for real-time traffic in OFDMA

提出了一种适合于OFDMA系统中实时业务传输的资源分配与调度算法,该算法利用物理层的信道信息和MAC层的业务信息,采取分组调度与子载波分配交替进行的资源分配方式,在满足数据包传输时延要求的同时,最大化系统的吞吐量.仿真结果表明,该算法无论是在系统的吞吐量、丢包率,还是数据包等待时延方面,都具有良好的性能.

A resource allocation and scheduling algorithm for real-time traffic in an OFDMA system was proposed. The proposed algorithm fully considered the physical layer and MAC layer information, in which packet scheduling and subcarrier allocation were performed in an alternate manner. The proposed algorithm aimed at satisfying the stringent packet delay constraints while obtaining a high system throughput. It is demonstrated in the simulation result that the proposed algorithm can improve system performance in terms of throughput, packet loss rate and packet delay.