Network coding based transport protocol variants in cognitive radio network

Abstract

Cognitive radio network has recently got more focus in research due to lack of spectrum resources. The unlicensed users can perform communication in the licensed frequency band. In response to the behavior of licensed users communication, unlicensed users communication need to change from one frequency band to another band. In this communication paradigm, the performance of unlicensed users transmission control protocol gets degraded due to the features of cognitive radio network. To overcome this, several authors suggested quite a few modifications in the existing wireless transport protocol for cognitive radio network environment. This paper gives an overview of different transport protocols used for unlicensed user’s communication in cognitive radio networks. Also, this paper deals with two different network coding algorithms such as dynamic generation size adjustment algorithm and modified joint generation network coding implemented in transport layer of cognitive-radio based communication. Simulation work is carried out in NS3, as the sensing time of unlicensed user changes the different quality-of-service parameters are analyzed.