Cross-layer Design of CSMA/CA with Spectrum Sensing for Cognitive Radio Networks

We devise a cross-layer design (CLD) of carrier sensing multiple access with collision avoidance (CSMA/CA) at the medium access control (MAC) layer with spectrum sensing (SpSe) at the physical layer for cognitive radio networks (CRNs). The proposed CLD relies on a Markov chain model with a state pai...

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Bibliographic Details
Published inarXiv.org
Main Authors Foukalas, F, Karetsos, G T, Chatzimisios, P
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 08.12.2013
Subjects
Access control
Cognitive radio
Collision avoidance
Collision dynamics
Computer simulation
Detection
Markov analysis
Markov chains
Performance evaluation
Radio networks
Two dimensional models
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Summary:We devise a cross-layer design (CLD) of carrier sensing multiple access with collision avoidance (CSMA/CA) at the medium access control (MAC) layer with spectrum sensing (SpSe) at the physical layer for cognitive radio networks (CRNs). The proposed CLD relies on a Markov chain model with a state pair containing both the SpSe and the CSMA/CA with exponential backoff from which we derive the transmission and collision probabilities. Due to the 2-dimensions of CSMA/CA model with exponential backoff, the resulted Markov chain is obtained with 3-dimensions. Simulation and numerical results are derived and illustrated highlighting the impact of SpSe in CSMA/CA with exponential backoff. The obtained results could be used as performance criteria to evaluate the performance of specific CRNs when they are deployed in a distributed coordination fashion that is prone to collisions.
ISSN:2331-8422