TD-SCDMA Radio Network QoS Research

TD-SCDMA is the first international communication standard of China patent right, which affect develop history of Chinese communication history.The QoS indicators of TD-SCDMA Radio network are researched in this article, which is based on the Chinese Field Experiment network of TS-SCDMA. As we know, the two main GSM network operators have a set of complete QoS assesment system, however the QoS system of 3rd radio communication system has just started. The research in this article is a part of QoS system --the radio part of QoS. Qos Indicators can reflect the quality of network and operators grasp the whole running status well.The researches are based on two aspects: one point is based on the external tools to examine the Qos indicator; another point is the tools of UTRAN system itself. This article will focus on TD-SCDMA R4 Specification network. Qos indicator can reflect the network quality. The operators are able to master the whole status of network with it and construction and optimization is also referred to it.The task of this topic is to research and establish the Qos assess system of TD-SCDMA (R4) radio system. Not only the indicators are put out, the ways of optimization and improvement are also presented.The research is carried out from the following two aspects: coverage, capacity, and service delay and the end users feeling can be measured with from external tools while the access, paging, access management and handover radio link management are measured by the system tools itself. The two aspects are supported by each other. On the other point many indicators is related to the different systems, so the Datang TD-SCDMA system is be researched in this article , some real network indicators of Datang system is used to help setting up the key performance indicators. Of course the Established QoS indicators are general and comparable. I am responsible for preparation and excution of all the test projects. The methods used in this article theory are deducing, experiment testing and commercial network referring.The content are divided into six chapters. They are coverage, capacity, handover, handover, access, time delay and end users feeling. It is hoped that the result of this article can help to the QoS indicators setting in the future commercial network of TD-SCDMA in China.At the present time, the LTE TDD convergence solution based on Datang core technique has been passed by 3GPP. TD-LTE is aligned with the development of current wide-band mobile telecommunication, satisfy the compaign request of telecom operator, combine super quality of voice and wide-band data. It also support complete mobility, multi-service, controllable and manageable network. It can be foreseen that demand of Qos indicator of HSPA and LTE is improved, which will be extension work of this article.