HSDPA中继系统实时业务调度算法研究  

A Real Time Traffic Scheduling Algorithm for HSDPA Relay System

作　　者：丁晓贵[1] 胡丁丁 

机构地区：[1]安庆师范学院计算机与信息学院 [2]安徽省移动公司

出　　处：《中国新通信》2014年第2期124-126,共3页China New Telecommunications

摘　　要：在传统的高速下行链路分组接入(HSDPA,High Speed Downlink PacketAccess)系统中,对于实时业务的调度,主流算法是修正的最大加权时限优先(M odified-LargestW eightD eadline First,M-LW D F)算法。但由于中继的引入,中继用户的延时增加必然会导致中继用户的丢包率增大,从而降低了系统的性能。基于此,本文提出了一种改进的M-LW D F算法,并通过VoIP业务对该算法进行了仿真验证。结果表明该算法能够在保证用户Q oS要求的前提下,提高系统吞吐量。In the traditional HSDPA system, for real time traffic schedule, the current mainstream schedule algo- rithm is M-LWDF algorithm. If continuing to adopt this algorithm in HSDPA relay system, the increasing of relay user latency will inevitably lead to packet loss rate increasing and system performance reducing. Therefore, this paper pro- poses a modified M-LWDF algorithm and adopt VolP traffic to verify the performance of the proposed algorithm. The result shows that the proposed algorithm can increase system throughput under the premise of ensuring user QoS.

关 键 词：高速下行链路分组接入 中继 分组时延调度 

分 类 号：TN925.93[电子电信—通信与信息系统]