DNS: Dynamic Network Selection Scheme for Vertical Handover in Heterogeneous Wireless Networks

Deva Priya, Prithviraj Dhandayuthapani, Valarmathi M.L

Abstract


Seamless Service delivery in a heterogeneous wireless network environment demands selection of an optimal access network. Selecting a non-promising network, results in higher costs and poor services. In heterogeneous networks, network selection schemes are indispensable to ensure Quality of Service (QoS). The factors that have impact on network selection include Throughput, Delay, Jitter, Cost and Signal Strength. In this paper, multi-criteria analysis is done to select the access network. The proposed scheme involves two schemes. In the first scheme, Dynamic Analytic Hierarchy Process (AHP) is applied to dynamically decide the relative weights of the evaluative criteria set based on the user preferences and service applications. The second scheme adopts Modified Grey Relational Analysis (MGRA) to rank the network alternatives with faster and simpler implementation. The proposed system yields better results in terms of Throughput, delay and Packet Loss Ratio (PLR).


Keywords


Multi-Criteria Decision Making (MCDM) Scheme, Analytic Hierarchy Process (AHP), Grey Relational Analysis (GRA), WiMAX, WiFi, QoS.

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References


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ISSN: 1694-2507 (Print)

ISSN: 1694-2108 (Online)