两种应用于HSDPA的最大C/I调度算法的仿真性能分析

Simulation Analysis of Two Max C/I Scheduling Algorithms Applied to HSDPA

高速下行分组接入是UMTS系统为适应高速下行分组业务的需求而提出的解决方案,其调度算法采用最大C/I和RR.对两种不同的最大C/I调度算法——完全的最大C/I算法和重传优先的最大C/I算法进行了性能的仿真,得到了最大重发次数对误帧率影响的曲线.结果表明,重传优先最大C/I算法在最大重发次数低时性能较佳,而完全最大C/I算法在最大重发次数高时性能较佳.分析了仿真结果产生的原因.

HSDPA is the solution to the high speed downlink packet services in UMTS. The max C/I scheduling is one of its scheduling algorithms. Two different scheduling algorithms, thorough max C/I and retransmission priority max C/I, were simulated, and the relation curve of the maximum number of retransmission and FER was obtained. When the maximum number of retransmission is low, the performance of thorough max C/I is better than retransmission priority max C/I, and when maximum number of retransmission is high, the performance of retransmission priority max C/I is better than thorough max C/I. The cause of the simulation results was also analyzed.