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Research on TCP Congestion Control Technology over Cognitive Radio Networks

Dong Lei (Chongqing University of Posts and Telecommunications,400065)  
The radio spectrum is a valuable,limited resource, licensed by the state.However,with the rapid development of wireless communications,people on the growing demand for spectrum resources.The emergence of cognitive radio effectively solve the situation of shortage of radio spectrum,but the traditional TCP congestion control methods are not well applied cognitive radio network,it is necessary for considering the characteristics of wireless networks,improving the existing congestion control. This paper introduces the concept of cognitive networks,then analysis of the cognitive problems in the network transport layer, optimization of the existing TCP protocol proposed method,the final analysis of future trends.
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