A Novel Integrated Priority Computing Scheme For IMT-Advanced System

As IP and mobile communication harmonize, future IMT-Advanced mobile communication system will be full-IP system supporting high speed multimedia services. It is not only available for low or high mobility applications and a wide range of data services, meeting subscriber needs in multiple environment, but also can provide high QoS multimedia applications. Since, IMT-Advanced will provide more flexible, diversified and personalized services, which makes QoS guarantee technology higher complexity.Priority plays an important role in deciding QoS, which means the service order for user distributed by system, to ensure user QoS. Therefore, the determination of priority is particularly important to improve the spectrum efficiency and user QoS.In light of the simplicity of user priority's influencing factors without considering relevancy and the excessively avoiding of non-real-time user in existing communication system, this paper proposes a novel scheme by collecting and in-depth analyzing a large number of the latest scientific research.This paper proposes Integrated Priority Computing (IPC) scheme, which is integrated with QoS characteristics of the IMT-Advanced system. This scheme introduces a priority system structure including Static Integrated Priority and Dynamic Integrated Priority by comprehensively taking into account multiple factors, such as subscriber call type, service characteristic and so on, and adopts iteration method and Fuzzy Analytic Hierarchy Process (FAHP) to determine user integrated priority between users of different services and call types.IMT-Advanced system level simulation platform is designed and realized in this paper, and simulation performance of new handover scheme is researched based on it. The simulation results show that the theoretical evaluation parameters weight V calculated by FAHP algorithm corresponds the best system performance, which proves theoretical analysis matches simulation results, DIPC scheme is effective. And also the results show that DIPC scheme can reduce handover dropping probability and new call blocking probability, improve IMT-Advanced system performance.