Research Of System-level Simulation And Key Technology In HSUPA

High Speed Uplink Packet Access(HSUPA) is a new work item of Technical Specification Release6 in 3GPP. Currently, the study of HSUPA field is very popular.The techniques of HSUPA, i.e. Quick scheduling based on Node B controlled, Hybrid ARQ with Chase Combining in physical layer,Shorter TTI and so on. These not only improved the performance of uplink dedicated transport channels but increased capacity and throughput and reduce delay.This thesis introduced a design method in HSUPA system-level simulation, as well as Universal Mobile Telecommunications System (UMTS) business model, details of the session service (VoIP) and the related technologies. Due to the delay in quiet period, we can not guarantee silent features time meet negative exponential distribution, can not guarantee any of 20ms sent a packet either. For this lack, improved the business model on its algorithm, and made simulation to verify the feasibility.After analysed three typical scheduling algorithm, made in-depth research on scheduling algorithm based on Node B controlled. When the big difference among channel conditions, the proportional fair scheduling algorithm can not effectively ensure fairness of users. In view of this phenomenon, given two modified proportional fair scheduling algorithm, and made simulation to verify the feasibility.In needs of the platform and performance validation, designed the statistical functions of performance, analyzed and interpreted related performance, further validated the feasibility of improved proportional fair scheduling algorithm. Meanwhile, easier when programmers improve the platform, more convenient when user manage and view. This part also provide design foundation for practical application.