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Multi-path Stable QoS Routing for Real-time Traffic Applications in MANET

mobile ad hoc networks (MANET), the existing routing protocols consider the routing metrics such as bandwidth, delay and link stability in partial manner. Also the real time and non- real time traffic flows are not distinguished based on delay and bandwidth requirements. In order to overcome these issues, in this paper multipath stable QoS routing for real time traffic in MANET is proposed. In this technique, multiple paths are discovered among source and destination. Among the discovered routes, the optimal paths are selected based on bandwidth constraints, delay constraints and path stability. When any flow request is received, it is initially categorized as real time and non-real time flows where real time flows are given higher priority. For real time flows, bandwidth and delay constrained paths are chosen. For non-real time flows, the stable paths are chosen. By simulation results, the proposed approach is validated and the approach minimizes delay and overhead.