期刊名称：International Journal of Mechatronics, Electrical and Computer Technology
印刷版ISSN：2305-0543
出版年度：2016
卷号：6
期号：22
页码：3124-3133
出版社：Austrian E-Journals of Universal Scientific Organization
摘要：The next generation wireless networks will be created by putting together several heterogeneous radio access technologies, which have capabilities, abilities and limitations of their own. In these networks providing multimedia services with guaranteed quality of service is essential. The main purpose of heterogeneous wireless access networks is to realize the concept of "always best connection", in which user can connect to the most suitable and the best network based on their own service requirements at anytime, anywhere and at any conditions. For effective use of radio resources in heterogeneous networks, the joint radio resource management method has been applied. Performance and efficiency of this management method will be better than independent radio resource management in any radio access technology. The two most important challenges of network selection optimization and meeting overall goals such as load balancing are considered, and in this regard, this paper presents an architecture for managing connectivity in heterogeneous access networks. Also, the decision algorithms of user side connection and feedback production methods to meet overall goals in these networks is designed and analyzed. Generally, connection management architecture consists of three layers: the user side resource manager, the station resource manager and the network resource manager. In the proposed architecture, decisions are made locally in the user side using the received feedbacks. The decision algorithms of user side are designed to reduce overhead control, reduce decision-making time, remove the overhead of scanning the environment, reduce the handover and also to supply the requirements of users and they use many parameters to determine the optimal connection such as conditions of mobile devices, requirements of applications, velocity and mobility parameters, load and price of each of the stations and received signal intensity of them and finally the personal preferences of the end users.
关键词：Self-Optimization Networking; Inter RAT Handover; QoS; Multi-Dimensional Decision
