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An Efficient Network Resource Reservation Mechanism with Mobility in Nested Heterogeneous Mobile Networks  

Park, In-Soo (Technology Support Business Unit, KT)
Tak, Dong-Kuk (Dept. of Electronics and Communications, Hanyang University)
Kim, Won-Tae (Embedded Software Research Division, ETRI)
Park, Yong-Jin (Dept. of Electronics and Communications, Hanyang University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.10, 2007 , pp. 83-98 More about this Journal
Abstract
The handover between different radio access networks, especially where their coverage overlaps, suffers various complications since the different access networks provide different service characteristics. One way to reduce service interruptions and QoS (i.e., bandwidth, throughput, delay) degradations during the inter-technology handover is to reserve the required resource in advance. The resource reservation algorithm should minimize the handover latency and maximize the resource utilization based on the accurate estimation on mobile's location, velocity, movement pattern and service requirements. In this paper, we propose a resource reservation algorithm based on the mobile terminal velocity and the cell selection probability, which maximizes resource utilization ana reduces network overhead. We compare the proposed algorithm with PMS(Predictive Mobility Support) and VCDS(Velocity and Call Duration Support scheme) based on 3-layer network model under various scenarios.
Keywords
handover; mobility; resource reservation;
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