Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article An Intelligent Handover Management System for Future Generation Wireless Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2008 Article ID 791691 12 pages doi 2008 791691 Research Article An Intelligent Handover Management System for Future Generation Wireless Networks Meriem Kassar Brigitte Kervella and Guy Pujolle Labortoire d Informatique de Paris 6 LIP6 University Pierre et Marie Curie Paris6 CNRS UMR 7606 104 avenue du President Kennedy 75016 Paris France Correspondence should be addressed to Meriem Kassar Received 27 December 2007 Revised 6 June 2008 Accepted 15 August 2008 Recommended by Athanasios Vasilakos Future generation wireless networks should provide to mobile users the best connectivity to services anywhere at anytime. The most challenging problem is the seamless intersystem vertical mobility across heterogeneous wireless networks. In order to answer it a vertical handover management system is needed. In our paper we propose an intelligent solution answering user requirements and ensuring service continuity. We focus on a vertical handover decision strategy based on the context-awareness concept. The given strategy chooses the appropriate time and the most suitable access network among those available to perform a handover. It uses advanced decision algorithms for more efficiency and intelligence and it is governed by handover policies as decision rules for more flexibility and optimization . To maintain a seamless service continuity handover execution is based on mobile IP functionalities. We study our decision system in a case of a 3G UMTS-WLAN scenario and we discuss all the handover decision issues in our solution. Copyright 2008 Meriem Kassar et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION The existence of various wireless technologies 3G UMTS WLAN WMAN etc.
