Hsupa, System-level Simulation And Key Technology Research

HSUPA, High Speed Uplink Packet Access, is a new work item of Release-6 in 3GPP WCDMA. The justification of the work item is that, since the use of IP based services becomes more important there is an increasing demand to improve the coverage and throughput as well as reduce the delay of the uplink. Applications that could benefit from an enhanced uplink may include services like video-clips, multimedia, e-mail, gaming, ftp, video-streaming etc.This work item investigates enhancements that can be applied to WCDMA in order to improve the performance on uplink dedicated transport channels. The techniques of the work item, i.e. Node B controlled scheduling, Hybrid ARQ, Shorter TTI, are to improve the performance of uplink dedicated transport channels, i.e. to increase capacity and throughput and reduce delay.Cell-level system performance of HSUPA is described through the simulation results, including cell throughput of uplink packet service, system delay, capacity, fairness of UEs, radio resource occupation and system device utilization. Much reference of the algorithms and models can be got from the performance results for the practical design and layout.System-level simulation of HSUPA builds the integrated platform and key models to describe and simulate the common structure and features of the radio network, including cell layout, path gain, traffic model, power control, handover, etc., also the special ones of HSUPA, including MAC- es/e, Node B controlled scheduling, HARQ, shorter TTI, etc..In this thesis, a powerful simulation tool, MATLAB, is chosen. On it, HSUPA special platform is implemented on the basis of the existed common one, including all the special structure and features of HSUPA. Series of data and curves in various scenarios are collected, and the results analysis provides valuable references and guideline for the practical system design.