HSDPA测试问题的分析-电子与信工程专业毕业论文.docx

浙江T业人学硕lj学fI．，．论文关键词：HSDPA(高速下行包交换接入)、自适应调制(AMC)、混合自动重发请求 浙江T业人学硕lj学fI．，．论文 关键词：HSDPA(高速下行包交换接入)、自适应调制(AMC)、混合自动重发请求 (HARQ)、分组调度、关键性能指标(KPI) 浙江T业人学硕1．学f≯论义THE 浙江T业人学硕1．学f≯论义 THE ANALYSIS OF PROBLEMS IN HSDPA TESTING AB STRACT The starting point of the thesis is testing the funct iota lity of HSDPA which is a new technology of WCDMA network．Through doing the HSDPA testing cases，the key performance indicatots of HSDPA were introduced briefly．While testing the HSDPA throughput case，the methodology of solving the throughput problem was raised，the troubleshooting experience was also got by doing the cases．In addition，the case about HSDPA packet scheduling was executed． Different packet scheduling schemes was piloted on the trial network and the test result was recorded．Finally the network performance Was analyzed by different packet scheduling schemes． So far,there are only quite limited studies about packet scheduling of HSDPA network in OLff country and there is no corresponding reports about packet scheduling testing on trail network． HSDPA is the term of Hi曲Speed Downlink Packet Access，which was published in the Release 5 of 3GPP．The purpose of the brand new solution is about tO enhance the downlink speed of packet service．It is consisted of some of the neW technobgies such as shortened T11， adaptive rnodulation and coding,hybrid autOma tic repeat request,optimized packet scheduling schemes．Right noW in the mainland of China，there’S no commerciaI lunched 3G network．The governrnent of China hasn’t allowed the bid of 3G network license．However,government had made the bluepr int of 3G msearck In the near f-utⅦ呛，3G network would be spread out in the whole mainhnd．In the initial phase，there must be quite a lot oftechnical problems．Discussing ofhow to solve the problems is not only beneficial to the network operators’investment，but also help them to save the cost and gain more profit．HSDPA throughput problem is one of the classica 1 cases which affect the end user’s satisf