摘要
目前已提出的HSDPA调度算法仅是基于用户的优先级进行数据分组的调度。文章考虑了3G系统的业务多样性,综合考虑用户的优先级和业务的级别,创新性地提出将两类分组调度算法,即基于业务类别的分组调度算法——加权公平排队算法,与基于用户优先级的调度算法——最短队列算法或者最长队列算法相结合后的调度算法。仿真的结果显示,提出的调度算法能满足不同业务要求的QoS。从吞吐量和延时来看,最短队列算法与加权公平排队算法结合方案优于最长队列算法与加权公平排队算法结合的方案。
Up to now, the exited HSDPA scheduling algorithms only consider about the users. They schedule data only based on the users＇ priority. In this paper, the class of differents kinds of services in 3G systems was considered too. A new scheduling algorithms based on users＇ priority and the class of services is provided. This paper combined two kinds of packet scheduling algorithms, the class-based scheduling algorithm -- WFQ algorithm and the two user-priority-based scheduling algorithm -- SQF and LQF algorithms. Simulaton results show that the proposed algorithms meet QOS requirments of different traffic classes. And the SQF ＋WFQ algorithms have better performace compared to the LQF＋WFQ algorithms.
出处
《现代电信科技》
2008年第11期49-52,共4页
Modern Science & Technology of Telecommunications
关键词
通信技术
HSDPA
仿真
调度算法
Communication Technology, HSDPA, Simulation, Scheduling Algorithm
