一种TD-HSUPA系统的TCP优化方法  

A strategy for improving TCP performance based on TD-HSUPA system

作　　者：王耀[1] 李方伟[1] 朱涛[1] 吴德操[1] 

机构地区：[1]重庆邮电大学移动通信重点实验室,重庆400064

出　　处：《电子技术应用》2011年第5期104-106,109,共4页Application of Electronic Technique

基　　金：国家科技重大专项(No.2009ZX03003-006-01;No.2009ZX03001-004-02);重庆市发改委高技术产业技术开发项目(No.20091537)

摘　　要：TCP在TD-HSUPA系统中的表现不理想,需要采取一些优化措施,在分析了TD-HSUPA系统的网络协议结构之后,提出了一种适用于TD-HSUPA系统的TCP优化方法——由RNC解析终端TCP连接的状态,在终端可能出现超时之前,由NodeB通过调度和信道分配相结合的方法改变终端物理层网络环境。经仿真表明,对于复杂多变的无线空口环境,本方法能保证TD-HSUPA数据传输的稳定性,提高网络的利用率和吞吐量。Due to the poor performance of TCP over TD-HSUPA system, so it needs to take some optimization measures. This paper analyzes the TD-HSUPA network structure and proposes a solution to enhance the TCP performance, the optimization mea- sure is that RNC analyses the TCP state of UE and informs NodeB to adjust the UE＇s physical channel by scheduling and DCA （dynamic channel assignment）.The simulation shows that the method mentioned above can guarantee TD-HSUPA data transmission stability and improve network utilization and throughput in the complex wireless air interface environment.

关 键 词：TD—HSUPA TCP 拥塞控制 

分 类 号：TN929[电子电信—通信与信息系统]