1x EV-DO反向链路概率自适应速率控制算法  

Probability Adaptive Rate Control Algorithm for the Reverse Link in 1x EV-DO Systems

作　　者：张伟[1] 柴远波[1] 谷立鹏[1] 张鑫[1] 

机构地区：[1]信息工程大学信息工程学院,河南郑州450002

出　　处：《信息工程大学学报》2010年第5期600-604,共5页Journal of Information Engineering University

基　　金：河南省杰出青年科学基金资助项目(074100510023)

摘　　要：针对cdma2000 1x EV-DO现有速率控制算法适应负载变化能力不高的问题,提出了一种概率自适应速率控制算法。该算法引入滑动窗口机制,通过统计反向激活比特值的变化情况,灵活改变速率转移概率,从而更加准确地适应系统负载的变化。仿真结果表明,该算法比现有算法明显改善了系统吞吐量和过载概率的性能,实现了二者之间良好的折衷。A probability adaptive rate control algorithm is proposed to solve the poor adaptivity of the system load in the traditional algorithm for cdma2000 1x EV-DO reverse link.This algorithm introduces the sliding windows mechanism,and according to the statistical states of reverse activity bits,the terminals could change the rate transition probability flexibly to adapt to the fluctuation of the system load more accurately.Simulation results show that this algorithm not only evidently improves the performance of system throughput and outage probability,but also makes a better trade-off between them.

关 键 词：1x EV-DO 速率控制 速率转移概率 反向激活比特 

分 类 号：TN929.533[电子电信—通信与信息系统]