QoS Routing Protocol Design And Simulation For UWB Ad Hoc Networks

The Mobile Ad hoc Network (MANET) is self-organized without use of any existing network infrastructure or any centralized administration. Distributing randomly, the nodes connect each other with wireless and multi-hop fashion. The prime motivation to build MANET is to meet the need of battlefield. On the inclement environment, the communication unit unlikely depend existing infrastructure, because in one hand, maybe there is no infrastructure at all, in the other hand, the infrastructure can be damaged at any moment. Compared with commercial GSM networks, the ability to setup rapidly and self organization is the basic element of MANET. With fine characteristic, MANET became more and more important in commercial and military communication. It can be applied in traffic guidance, emergency rescue, sensor network, education and mobile meeting. As an important part of 4G, MANET has been a hot spot in theory research and became more and more important in commercial and military applications.Development of UWB technology brings efficient PHY for short range wireless communications. The high transmission rate unclog of bandwidth bottlenecks. The fine security characteristic enable UWB support security on PHY layer. Pulsing decreases the electric power consumption. The precise localization supports neighbor discovery and routing better for MANET.Meanwhile, as the premise of real data transmission, QoS support system became increasing fundamental especially in the dynamic topology and time varying environments. As a part of QoS support system, Qos routing aimed to search route which meets the resource requirements. QoS routing works cooperatively with QoS MAC and QoS signaling protocols to establish available routes then satisfy end to end QoS requirement such as requirement of delay, jitter, and bandwith or multi metrics constraint.Conetent of this paper: Based on the UWB technology and the characteristic of Ad hoc networks, the formation of UWB networks and QoS guarantee are researched in order to meet the requirement of both UWB and QoS; We analyze the routing strategy of basic routing protocols, implement a novel routing strategy considering the bandwidth to support QoS; Finally, afer protocol simulaton, the trace file is analyzed and the performance is evaluated.Main contributions:(1) Propose an novell QoS routing protocol for UWB Ad hoc networks - DURP(Distance based UWB Routing Protocol) adopting greedy forward based on location, limiting the flood of routing packets, considering the bandwidth and stability of nodes as well, finally ensure the routing success ratio and QoS requirement.(2) Propose a conception of AS (Available Subset) utilizing multicast and local area maintenance to control the broadcast storm(3) Propose a new method to measure the stability of nodes, ie. by caculating number of neighbor to measure the node is stable or not.This information can be adopted in routing maintenance and forward.