Research On Routing Protocol For Supporting QoS In Ad Hoc Networks

The general field of mobile Ad Hoc networks is still in its infancy. Particularly, the challenge of providing quality of service (QoS) support is an open problem and remains relatively uncharted territory because of the lack of centralized control, limited node capability, and variability of the links and network topology. This paper, based on the current research, does extensive research and introduces the modified QoS algorithm in mobile Ad Hoc networks.Firstly, dynamic source routing (DSR) is modified to support the QoS requirement. DSR is a simple and efficient routing protocol designed specifically for use in mobile Ad Hoc networks. The protocol allows multiple routes to any destination and allows each sender to select and control the routes used in routing its packets, for example for use load balancing or for increased robustness. Other advantages of the DSR protocol include easily guaranteed loop-free routing, support for use innetworks containing unidirectional links, and very rapid recovery when routes in the network change. It's presented that a survey of the current research that has addressed the basic concepts and the implementation of QoS routing in the Ad Hoc networks. However, these protocols bring much complexity and the application is different, if not impossible. In this paper, we first develop detailed computations that allow us to estimate the available bandwidth in Ad Hoc networks, and then modify DSR followed by extensive simulation to verify the effectiveness with different environment.After analysis the existiing quality - of - service in mobile Ad Hoc network, bases on AODV protocol draft, this article presents a new QoS routing algorithm. It can be applied in the network which has a QoS operation demand. We also compare this new arithmetic with the Greedy arithmetic, the simulation results indicate that the new arithmetic has low control cost, higher end-to-end connectivity and low transmitting fluctuation.