Various Common Control Channel Assignment Schemes in CRNs: A Survey
Jagsir Singh, Inderdeep Kaur Aulakh, Roopali Garg · International Journal of Computer Science and business informatics/International journal of computer science and business informatics · 2016
Cognitive radio technology makes the unlicensed user to use the licensed band in opportunistic manner. By using licensed band in intelligently way for solving the problem of shortage of radio bands and optimal utilization of licensed band there is the requirement control channel (CCC). Control channels are used for exchanging control information about the new available channel for data transmission. When the primary user is detected or decline of QoS of currently being used channel by cognitive user then there is need of the common control channel to move on a new available channel. These channels are required to sense the free channel, to transmit the control information for channel synchronization between sender and receiver. It is challenging aspect of CRNs to provide the proper coverage of CCC that the problems of data packet loss or termination of connection can be reduced. In this paper various control channel assignment schemes are described.