IQoS-ODMRP: A novel routing protocol considering QoS parameter in MANET

Mobile Ad-hoc Networks (MANETs) consist of mobile devices that form the wireless networks without any fixed infrastructure or centralized administration. Due to the rising popularity of multimedia applications and potential commercial usages of the mentioned networks, Quality of Service (QoS) in MANET has become necessary to meet their QoS requirements. In this paper, first study the QoS requirements of multicast routing in ad hoc networks, then proposed a novel Improved QoS On-Demand Multicast Routing Protocol (IQoS-ODMRP) by adding two new characteristics to the multicast routing protocols with QoS considerations. The first characteristic is that if there is not sufficient bandwidth for requested one, it could be accepted by getting feedback from application. The second characteristic is the ability of adjusting the timers' value and delays with mobility speed. In IQoS-ODMRP protocol packet delivery ratio increased and end-to-end delay decreased. The simulation results confirm the validity of the proposed protocol.