A MAC Protocol for Utilizing the Optimal Idle Channel in Cognitive Radio Wireless Networks

doi:10.13190/jbupt.201002.121.274

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2010, Vol. 33 ›› Issue (2): 121-125.doi: 10.13190/jbupt.201002.121.274

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A MAC Protocol for Utilizing the Optimal Idle Channel in Cognitive Radio Wireless Networks

ZHAI Lin-bo, LIU Yuan-an, LIU Kai-ming

(School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China)

Received:2009-05-25 Revised:2009-06-12 Online:2010-04-28 Published:2010-04-28

Abstract

Abstract:

A mdeia access control (MAC) protocol, utilizing the optimal idle licensed channel, is proposed for cognitive radio wireless networks. The protocol enables the secondary (unlicensed) users to select the optimal idle licensed channel with spectrum sensing of multiple licensed channels, and solves the problems of hidden terminals and exposed terminals. An analytic model is proposed to analyze the throughput of our proposed MAC protocol under the saturated network case. Simulations show that the model is very accurate in evaluating the saturation throughput of our proposed MAC protocol. 

Key words: cognitive radio, hidden terminals, exposed terminals, saturation throughput

CLC Number:

TN91

ZHAI Lin-bo LIU Yuan-an LIU Kai-ming . A MAC Protocol for Utilizing the Optimal Idle Channel in Cognitive Radio Wireless Networks[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2010, 33(2): 121-125.

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A MAC Protocol for Utilizing the Optimal Idle Channel in Cognitive Radio Wireless Networks

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