Title :
An analysis on decentralized adaptive MAC protocols for Cognitive Radio networks
Author :
Shah, Munam Ali ; Zhang, Sijing ; Maple, Carsten
Author_Institution :
Dept. of Comput. Sci. & Technol., Univ. of Bedfordshire, Luton, UK
Abstract :
The scarcity of bandwidth in the radio spectrum has become more vital since the demand for more and more wireless applications has increased. Most of the spectrum bands have been allocated although many studies have shown that these bands are significantly underutilized most of the time. The problem of unavailability of spectrum and inefficiency in its utilization has been smartly addressed by the Cognitive Radio (CR) Technology which is an opportunistic network that senses the environment, observes the network changes, and then using knowledge gained from the prior interaction with the network, makes intelligent decisions by dynamically adapting their transmission characteristics. In this paper some of the decentralized adaptive MAC protocols for CR networks have been critically analyzed and a novel adaptive MAC protocol for CR networks, DNG-MAC which is decentralized and non-global in nature, has been proposed. The results show the DNG-MAC out performs other CR MAC protocols in terms of time and energy efficiency.
Keywords :
access protocols; cognitive radio; decision making; radio networks; CR MAC protocols; CR networks; CR technology; DNG-MAC; cognitive radio networks; decentralized adaptive MAC protocol analysis; energy efficiency; intelligent decision making; opportunistic network; radio spectrum; spectrum band allocation; Ad hoc networks; Cognitive radio; Media Access Protocol; Wireless LAN; Wireless sensor networks; Cognitive Radio; Common Control Channel; Cooperative Communication; MAC Protocols;
Conference_Titel :
Automation and Computing (ICAC), 2012 18th International Conference on
Conference_Location :
Loughborough
Print_ISBN :
978-1-4673-1722-1