A Flexible Sensing Period Mechanism of Spectrum Sensing in Cognitive Radio Networks

doi:10.13190/jbupt.200802.128.zhangy

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (2): 128-131.doi: 10.13190/jbupt.200802.128.zhangy

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A Flexible Sensing Period Mechanism of Spectrum Sensing in Cognitive Radio Networks

ZHANG Yu, FENG Chun-yan, GUO Cai-li

Institute of Communication Network Integrated Technology, Beijing University of Posts and Telecommunications, Beijing 100876,China

Received:2007-06-24 Revised:1900-01-01 Online:2008-04-28 Published:2008-04-28
Contact: ZHANG Yu

Abstract

Abstract:

A new spectrum sensing mechanism based on flexible sensing period（ FSP） is proposed to control the cost of the sensing in the medium access control（MAC） layer of cognitive radio networks. The cognitive radio (CR) users can make a balance between the unexpected time and the sensing count by utilizing the statistic information of licence users and a “period control factor”, that will reduce the cost of sensing. Simulation results show that FSP can give a better performance than the typical fixed sensing period mechanism.

Key words: cognitive radio, spectrum sensing, renewal rewards theory, residual life

CLC Number:

TN911.23

ZHANG Yu, FENG Chun-yan, GUO Cai-li. A Flexible Sensing Period Mechanism of Spectrum Sensing in Cognitive Radio Networks[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(2): 128-131.

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A Flexible Sensing Period Mechanism of Spectrum Sensing in Cognitive Radio Networks

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