By Mahsa Derakhshani, Tho Le-Ngoc
This SpringerBrief provides fresh advances within the cognitive MAC designs for opportunistic spectrum entry (OSA) networks. It covers the fundamental MAC functionalities and MAC improvements of IEEE 802.11. Later chapters talk about the present MAC protocols for OSA and classify them in line with attribute features.
The authors offer new learn in adaptive provider sensing-based MAC designs adapted for OSA, which optimize spectrum usage and confirm a calm coexistence of authorized and unlicensed structures. Analytically devised through optimization and game-theoretic ways, those adaptive MAC designs are proven to successfully decrease collisions among either basic and secondary community users.
Researchers and pros operating in instant communications and networks will locate this content material beneficial. This short can also be an invaluable learn advisor for advanced-level scholars in computing device technology and electric engineering.
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Additional resources for Cognitive MAC Designs for OSA Networks
22. A. De Domenico, E. C. Strinati, and M. Di Benedetto, “A survey on MAC strategies for cognitive radio networks,” IEEE Commun. , vol. 14, no. 1, pp. 21–44, First Quarter 2012. 23. C. Cordeiro and K. Challapali, “C-MAC: A cognitive MAC protocol for multichannel wireless networks,” in Proc. IEEE Intl. Symp. New Frontiers in Dynamic Spectrum Access Networks (DySPAN), Dublin, Ireland, Apr. 2007. 24. M. Timmers, S. Pollin, A. Dejonghe, L. Van der Perre, and F. Catthoor, “A distributed multichannel MAC protocol for multihop cognitive radio networks,” IEEE Trans.
3- After expiry of the backoff time, sense the channel i, if it is idle, transmit. , xik (t j ) = 1) will succeed and transmit in this sub-slot. Let yik (t j ) be a binary random variable representing the capturing status: yik (t j ) = 1 if the SU k captures the channel i in sub-slot t j ; otherwise, yik (t j ) = 0. , the average time proportion of a transmission slot that an SU successfully occupies the channel i, given the competition among SUs) can be obtained as β¯ki = E ∑Sj=1 xik (t j )yik (t j ) S .
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