Paper Info
Title
Adaptive Sensing Period Based Distributed Medium Access Control For Cognitive Radio Networks
Abstract
In this paper, we propose distributed medium access control (MAC) protocols based on an adaptive sensing period adjustment scheme for low-cost multiple secondary users in interweave-type cognitive radio (CR) networks. The proposed MAC protocols adjust the sensing period of each secondary user based on both primary sensing and secondary data channels in distributed manner. Then, the secondary user with the shortest sensing period accesses the medium using request-to-send (RTS) and clear-to-send (CTS) message exchange. Three components affect the length of each user's sensing period: sensing channel quality from the primary system, data channel quality to the secondary receiver, and collision probability among multiple secondary transmitters. We propose two sensing period adjustment (SPA) schemes to efficiently improve achievable rate considering the three components, which are logarithmic SPA (LSPA) and exponential SPA (ESPA). We evaluate the performance of the proposed schemes in terms of the achievable rate and other factors affecting it, such as collision probability, false alarm probability, and average sensing period.
Year
DOI
Venue
2014
10.1587/transcom.E97.B.2502
IEICE TRANSACTIONS ON COMMUNICATIONS
Keywords
Field
DocType
cognitive radio, distributed MAC, adaptive sensing period
False alarm,Computer science,Collision probability,Data channel,Communication channel,Computer network,Access control,Logarithm,Adaptive sensing,Cognitive radio
Journal
Volume
Issue
ISSN
E97B
11
0916-8516
Citations 
PageRank 
References 
1
0.39
14
Authors
2
Name
Order
Citations
PageRank
Su Min Kim112919.92
Junsu Kim214515.16