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- W195981207 abstract "Next generation wireless networks are expected to include heterogeneous wireless networks to offer a diverse range of multimedia services to mobile users. Due to the heterogeneity and the diversity of access networks, various user applications with different Quality of Service (QoS) requirements pose new challenges on multi-interface Mobile Terminal (MT) in designing optimal network selection algorithm for guaranteeing seamless QoS support to the users. Thus, Vertical Hand Off (VHO) is necessary to provide uninterrupted services to mobile users anywhere and anytime in 4G networks. In this paper, Service continuity with guaranteed QoS and minimum VHO rate is considered as a challenging issue. In order to achieve this, discovered networks are evaluated periodically according to the velocity and direction of Mobile Terminal. Network evaluation is carried out through the integration of utility function calculation and cell residence time estimation. The proposed scheme avoids unnecessary VHO by selecting the network based on the capabilities of MT, QoS requirements of ongoing service and characteristics of networks. Thus, it eliminates the probability of HO failure by considering all possible critical factors and adaptive Residence Time (RT) threshold in 4G wireless networks. The results are compared against the performance of utility-based handoff and residence time-based handoff schemes. The simulation results show that the proposed scheme reduces the number of unnecessary handoffs which in turn minimizes the VHO rate and probability of HO failure in 4G wireless networks." @default.
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- W195981207 date "2013-11-20" @default.
- W195981207 modified "2023-09-23" @default.
- W195981207 title "Combined Utility and Adaptive Residence Time-Based Network Selection for 4G Wireless Networks" @default.
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- W195981207 doi "https://doi.org/10.1007/978-3-642-41407-7_2" @default.
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