Cross-layer dynamic source routing for delay-sensitive applications in mobile ad hoc networks
by Binod Kumar Pattanayak, Alok Kumar Jagadev, Manoj Kumar Mishra, Ajit Kumar Nayak, Manojranjan Nayak
International Journal of Information and Communication Technology (IJICT), Vol. 3, No. 1, 2011

Abstract: Efficiency of mobile ad hoc networks (MANETs) primarily rely on a set of quality of service (QoS) parameters such as bandwidth, delay, battery power etc. be guaranteed during the life time of application of the network. The support of these parameters can be more efficient with a cross-layer approach to design and implementation of routing protocols for MANETs. In fact, access mechanisms of radio channels significantly affect the QoS support and improvement of application performance. In this paper, we cross-layer routing issues and present an ad hoc routing protocol called CLDE, which incorporates the on-demand dynamic source routing (DSR) protocol in coordination with IEEE 802.11e MAC protocol (EDCA). The aim of this protocol is to find a path for a flow with lowest possible delay. In this approach, each node needs to estimate periodically the average transmission delay for delay-sensitive applications. This information is incorporated in routing control packets of DSR during route discovery. In order to address transient network characteristics due to new applications admitted to the network, we develop a buffer management scheme for the audio packets as per their end-to-end transfer delay and the current expiration delay. Simulation results depict the improved performance of our proposal for delay-sensitive applications.

Online publication date: Mon, 20-Oct-2014

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