Research Solutions On Key Issues Of SAE Introduction Process

With the continuous development of technology of mobile communication, and the continuous increasement of user demand, the existing 2G/3G communication system is difficult to meet the growing needs of communication. In the Release 8 phase,3GPP standards organization started the long-term evolution (LTE) and System Architecture Evolution (SAE) standardization. SAE is the core network of LTE radio access network architecture, it's based on IP, take the packet switching as the core, support multi-access, offers a variety of new features of the new core network architecture. In the broadband era of mobile conmunication, operators will be more competitive through using the core network solutions. However, how to protect existing investments of 2G/3G networks, reduct the impact on the existing network in the maximum, and make the packet domain network of existing 2G/3G network smoothly evolve to SAE, are the key issues should to consider.This article describes some key technical problems of SAE solution, it's so important for the deployment of the SAE and the smooth evolution of the core network. This paper first introduces the network solutions of multi-access, elaborates the evolution strategy from 2G/3G network to the SAE network step by step, and how the core network ultimately form a unified packet core network. As the current 2G/3G packet domain network will coexist with the SAE network in long-term, and the integration of unified charging is operating strategy and the inevitable need to reduce operating costs, this paper then gives the strategy and solution of convergent charging, and ultimately form a unified network billing system. In Release 7,3GPP proposed PCC architecture, then this paper analyze in detail how the policy and charging control architecture can be applied in the SAE network, and provide solutions to solve problem. This solution can make it essential to provide end to end management and control capability for operators to achieve the data traffic differentiation and fine operation.