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Enhancing the Efficiency of MANETs by Improving the On-demand Routing Protocols and QoSmetrics

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A Mobile Ad Hoc Network represents a system of wireless mobile nodes that can freely and dynamically selforganize into arbitrary and temporary network topologies, allowing people and devices to seamlessly communicate without any pre-existing communication architecture. The growth of real time multimedia application in such environments, has drawn a lot of attention to wireless networks that support quality of service (QoS). In this work, the QoS metrics, delay and link life time (LLT) of the path are dynamically calculated. Based on these values the routing decisions are made. Here the multipath routing protocol is taken as the base protocol. The proposed algorithm finds the multiple QoS routes only, based on the QoS metrics and stores only those paths in the routing table. The route is selected based on the integrated QoS metric and is used to transmit the data. The base protocol used is multipath AODV(Ad Hoc On demand Distance Vector ) routing protocol. The proposed protocol may take extra time during route discovery process to compute the additional QoS parameters, but this time is compensated by having only QoS paths for data transmission. A few patents on the QoS Routing for MANETS have been reviewed.The simulator NS-2.34 is used to simulate and compare the performance of the protocols in terms of the QoS metrics such as end-to-end delay, PDR in the MANET.
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Keywords: Ad Hoc On demand Distance Vector (AODV); CBR (Constant Bit Rate); Destination Sequence Distance Vector (DSDV); Dynamic Source Routing (DSR); LLT (Link Life Time); Mobile Ad Hoc Network (MANET); PDR (Packet Delivery Ratio); PLTR (Percentage Life Time Ratio); Quality of Service (QoS); RLT (Route Life Time); TCP (Transmission Control Protocol)

Document Type: Research Article

Publication date: December 1, 2012

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  • Recent Patents on Telecommunications publishes review and research articles, and guest edited thematic issues by experts on recent patents in telecommunications. The journal also covers recent research (where patents have been registered) in fast emerging areas of the field such as networks, wireless communications, communication technology, computing and processing, and the Internet. A selection of important and recent patents on telecommunications is also included in the journal. The journal is essential reading for all researchers involved in telecommunication science and technology.
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