Research On WCDMA High Speed Uplink Packet Access And The Scheduling Algorithm

High Speed Uplink Packet Access (HSUPA) is a new work item of Technical Specification Release 6 in 3GPP. WCDMA system. The techniques of this work item, i.e. Node B controlled scheduling, Hybrid ARQ with Chase Combining, Shorter TTI, are to improve the performance of uplink dedicated transport channels, i.e. to increase capacity and throughput and reduce delay. Firstly, this paper shows the overview of these new technologies, and how WCDMA system works with them; Secondly, tells about the modeling and simulation of HSUPA system, and the study of the the performance of new technology and its influence on the radio network coverage; Thirdly, studys the Node B scheduling mechanism and give a new algothrim to guarantee the efficiency when using the radio uplink resources; At last, some typical UMTS traffic models are studied, and an algothrim to grarantee the QoS of all the traffics while there are multi-traffics in cell is given.