eprintid: 912 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/09/12 datestamp: 2023-11-09 15:49:03 lastmod: 2023-11-09 15:49:03 status_changed: 2023-11-09 15:38:42 type: conference_item metadata_visibility: show creators_name: Rizvil, S. creators_name: Aziz, A. creators_name: Saad, N.M. title: Optimizations in vertical handoff decision algorithms for real time services ispublished: pub keywords: 4G networks; Degradation of service; Handoff decision; Handoff mechanisms; Heterogeneous network environments; Heterogeneous wireless network; Mobile terminal; Monetary costs; Network condition; Next generation network; Overall efficiency; Real time service; Received signal strength; Seamless mobility; UMTS/WLAN integration; Vertical handoff; Vertical handoff decision algorithm; Vertical handover decision algorithm, Algorithms; Blocking probability; Cellular neural networks; Distributed computer systems; Heterogeneous networks; Interoperability; Radio systems; Wireless networks, Telecommunication networks note: cited By 2; Conference of 2010 International Conference on Intelligent and Advanced Systems, ICIAS 2010 ; Conference Date: 15 June 2010 Through 17 June 2010; Conference Code:84196 abstract: The vision of 4G network is to have a unified network of heterogeneous wireless networks. To achieve seamless mobility in such a diverse environment, vertical hand off is still a challenging problem. Traditional handoff mechanisms were based on the Received Signal Strength (RSS), but to have an efficient handoff decision in a heterogeneous network environment in addition to RSS other parameters, e.g. monetary cost, user preferences and network conditions must be taken into account. In many situations unnecessary handoffs are triggered causing degradation of services, reduction in throughput and increase the blocking probability and packet loss. In this paper we propose real time services vertical handoff decision algorithm (RS-VDA). RS-VDA, defined for upward and downward vertical hand off scenarios. The proposed algorithm takes several metrics into account such as velocity of mobile terminal, bandwidth, RSS and delay of the network. The proposed algorithm will improve the overall efficiency of seamless mobility in Next Generation Networks (NGN). date: 2010 official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952765498&doi=10.1109%2fICIAS.2010.5716262&partnerID=40&md5=832de38658ac8c74f021823d6c30c1aa id_number: 10.1109/ICIAS.2010.5716262 full_text_status: none publication: 2010 International Conference on Intelligent and Advanced Systems, ICIAS 2010 place_of_pub: Kuala Lumpur refereed: TRUE isbn: 9781424466238 citation: Rizvil, S. and Aziz, A. and Saad, N.M. (2010) Optimizations in vertical handoff decision algorithms for real time services. In: UNSPECIFIED.