Performance Optimization Of EBPoC Prototype System

In the upcoming of 3G, the telecommunications industry has set our sights on a new killer service similar to SMS service in 2G to promote the development of the entire industry. During the past a few years, PoC (Push-to-talk over Cellular) service has aroused great concern in the industry. It is most likely to become a mobile data value-added business killer application from the perspective of application. Because PoC service achieves calls based on the data transmission capabilities provided by the mobile operators, mobile operators can increase network efficiency, data throughput. It can also provide the opportunities for mobile operators and service providers to explore new markets.PoC service is a typical network service in 3G network, and also a part of IMS (IP Multimedia Subsystem). It originates from trunking communication, supports both 1-1 communication and group communication based on half-duplex VoIP (Voice over Internet Protocol). It can be used rapidly and quickly to establish the point-to-point, point-to-multipoint communication in a team so that the information can be effective and timely shared, which is called push-to-talk. The original users of trunking communication are generally some special group users, but with the development of commercial, the intensification of global competition, this means of communication have been concerned and applied by mobile operators in a wide range.Eastcom-BUPT Information Technology Co. Ltd, PoC project team developed a prototype system which could provide a server-to-end total solution. It meets the most functional requirements of the OMA-PoC 1.0.2 version. However, because of the current GPRS network performance constraints and the performance of the prototype system constraints, the PoC service performance provided by current EBPoC prototype system, cannot achieve the business requirements. Therefore, how to optimize the performance of the EBPoC prototype system has become the subject of this research.This article illustrated the design and implementation of performance optimization of EBPoC prototype system. In chapter one, it introduced the PoC services briefly, including the business background, business description, business characteristics, performance requirements, as well as market positioning. Then it introduced the network structure and system architecture of EBPoC prototype system, and further analyzed the significance of performance optimize of EBPoC prototype systemIn chapter two, it analyzed the performance optimize of EBPoC prototype system detailed. First, it chose a typical business process, analyzed and got the causes of performance bottlenecks of prototype system, found the directions of optimization. Then it brought several optimization plans and made comparison to choose.Chapter three carried out the design and implementation of agent subsystem, which is based on the extended architecture of EBPoC prototype system. It described some key technologies and third part tools, it described the design and implementation of agent subsystem's modules, and it studied and elaborated some key technology points.In chapter four, it described the design of the private protocol we used in performance optimization plan. It picked some typical business processes, and illustrated the private signaling formats and the private business processes.In chapter five, it tested and compared some time delay data of some specific businesses, before and after the prototype system performance optimization. Then it analyzed and summarized the test results.There are still some problems to solve to make it better. In the end of this paper it summarized both the advantages and the deficiencies of the performance optimization of EBPoC prototype system, and proposed the possible enhancements.