CDMA2000-1x系统分组业务FSCH调度算法优化  

Optimization about the Packet Service SCH Scheduling Algorithm of CDMA2000-1x System

作　　者：贺冰琰[1] 

机构地区：[1]集美大学计算机工程学院,福建厦门361021

出　　处：《云南民族大学学报（自然科学版）》2009年第4期358-360,共3页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：福建省教育厅2007年第1批B类科技项目(JB07132)

摘　　要：分析了CDMA2000-1X系统中影响分组数据业务传输性能的主要原因:1.补充信道带宽振荡对上层TCP业务吞吐量的严重影响;2.补充信道指配延迟对信道资源利用率的的影响.提出了2种能提高分组业务性能的SCH调度算法优化方案:1.FSCH指配延迟的优化;2.FSCH调度时长的修改,并对优化前后的性能进行了对比,分组数据业务吞吐性能提高了10%左右.The main factors affect the performance of the packet data service of CDMA2000 -1x system include the following： 1. The bandwidth oscillation of supplemental channel greatly affects the throughput of the upper TCP service; 2. The supplemental channel assignment delay affects the utilization rate of channel resources ; it brings up two improved scheduling algorithms that help improve the packet service performance： FSCH assigmnent delay optimization; FSCH scheduling duration adjustment; it tests the performace of the improved scheduling algorithm and compares it with the unimproved algorithm, and it concludes that the throughput performance of the system increases about 10 percent.

关 键 词：码分多址 分组数据业务 前向补充信道 带宽振荡 

分 类 号：TN929.533[电子电信—通信与信息系统] TP311.52[电子电信—信息与通信工程]