Research On Cognitive Radio Ad Hoc Network Routing Mechanism

Rapid development of wireless communication network, thus there are moreand more demand for access to the spectrum access frequency spectrum resource islimited, however, and most of the equipartition ration of authorized users, causedthe bottleneck in the development of wireless communication network. Cognitiveradio technology is put forward to fundamentally solve the spectrum tensecontradiction, and the traditional wireless network has brought the fundamentalchange. In wireless Ad hoc network in the form of its network organization flexible,topology diversity, has been widely used in many occasions. Cognitive radiotechnology introduced the concept of cognitive radio Ad hoc network, and it bringsthe change of the routing protocol. According to the characteristics of the routingprotocol design, this study based on the characteristics of cognitive radio Ad-hocnetwork study, the research process is as follows:(1) analysis the thinking of Ad hoc network routing protocol design,summarizes the classification of routing protocols, this topic research, summed upthe cognitive radio network routing design challenges and problems need to besolved, and as a starting point, puts forward the preliminary solution and researchroute.(2) to analyze the characteristics of the routing metric, combined with thepresent research hot spot problems-green communication technology, based onreducing energy consumption, a new routing metric, and according to the road bymeasurement, based on the difference after flow routing method, this methodconsiders the spectrum allocation and flow control of each dance, as well as energyconsumption, the simulation results show its advantage on the transmission delay.(3) based on the design of routing metrics, is proposed considering the routingmechanism for protection of primary user receiver design, the idea is to through themain user communication area, with minimal hop through, thus in unknown primaryuser receiver location conditions, effectively avoid the main user interference at thereceiving end, the scheme based on different business is effectively and alsoconsider the guarantee of the quality of service, has a strong robustness andscalability. (4) this project is summarized and prospected, and the future research directionis put forward and need to continue to study in the future work.This topic research is related to cognitive radio Ad hoc network routingmechanism of beneficial exploration, the limitation of factors such as the researchtime, need to constantly improve and explore.