Dynamic Source Routing with Delay and Bandwidth Guarantees for Mobile Ad Hoc Networks

Abstract

Mobile ad-hoc networks (MANETs) are a specific kind of wireless networks that can be quickly deployed without pre-existing infrastructures. They are used in different contexts such as collaborative, medical, military or embedded applications. However, MANETs raise new challenges when they are used to support multimedia and real time applications (e.g., videoconference, VoIP, Video on Demand, etc.,) that require constraints on Quality of Service like the delay or the bandwidth. Indeed, these networks undergo drawbacks due to both the characteristics of the transmission medium (transmission medium sharing, low bandwidth, etc.,) and the routing protocols (information diffusion, path calculation, etc.,). In this paper, we have added and enhanced the aspect QoS in dynamic source routing (DSR) to get the new protocol called DB-DSR (Delay & Bandwidth Dynamic Source Routing). In this proposal we have considered the constraints of bandwidth, delay and coupling of these two constraints together in research and establishment of paths. The simulation results obtained after implementation of our protocol in OPNET showed the efficiency and level of performance of our protocol compared to the DSR protocol.