Ad Hoc Network QoS Routing Protocol Design And Development To Achieve

Wireless mobile Ad Hoc networks are composed of mobile nodes with wireless transceiver functions, without any network infrastructure support. Ad Hoc network is a self-organizing and multi-hop network, each node has the function of user terminals and router. Due to the Ad Hoc network has the characteristics of fast and flexible networking and distributed way of working, make it has been widely used in the field of military and emergency rescue and other special circumstances. With the popularity of mobile and handheld devices, Ad Hoc network is more and more widely concerned, and support QoS in Ad Hoc network has become inevitable. But due to Ad Hoc network has the characteristics of node bandwidth constraints and dynamic network topology, routing technology is used in traditional networks are no longer applicable. Support quality of service (QoS) in Ad Hoc network is a challenging job, design the routing algorithm and the routing protocol support QoS become the focus of the current mobile Ad Hoc network technology research.With the development of Ad Hoc network technology, network applications request to provide QoS support, this paper presents a multiple QoS parameters of MIAQR adaptive routing algorithm. By this algorithm can measure every link of the web service performance and select the optimal path of communication.The paper introduces the concept and architecture characteristics of Ad Hoc network, reviewed the development process of Ad Hoc networks. Researched the current typical QoS routing protocols have been proposed. And through the comparison of the protocol that on-demand logic layer is the development direction of routing protocols in Ad Hoc network. This routing protocol is implemented by five kinds of protocol message. Including the network route discovery and maintenance, and through the programming to realize link parameters acquisition, selection the optimal path and update the system routing table. In the development of protocol implementation, this paper analyses the design of wireless network card driver, and selects the embedded Linux as the implementation platform recompile the NIC driver. According to the design principle of the agreement, the paper has given the software architecture of the protocol. According to the software hierarchy model and thread model, the protocol is designed in detail and analyses the difficulties and the key points in design. Finally, test the performance of the protocol by set up the test environment. The main test protocol functions include route discovery and maintenance, multi-hop routing, the optimal path selection, data forwarding, transmission delay, packet loss rate and protocol overhead. The test results show that the protocol can find a path quickly and maintenance the path effectively. According to MIAQR adaptive routing algorithm, it can calculate the optimal path to the destination node, and the protocol support more jump forward and occupies less system resources.