A Simple MAC Protocol for Cognitive Wireless Networks

Abdorasoul GHASEMI; S. Mohammad RAZAVIZADEH

doi:10.1587/transcom.E92.B.3693

A Simple MAC Protocol for Cognitive Wireless Networks

Abdorasoul GHASEMI, S. Mohammad RAZAVIZADEH

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A simple distributed Medium Access Control (MAC) protocol for cognitive wireless networks is proposed. It is assumed that the network is slotted, the spectrum is divided into a number of channels, and the primary network statistical aggregate traffic model on each channel is given by independent Bernoulli random variables. The objective of the cognitive MAC is to maximize the exploitation of the channels idle time slots. The cognitive users can achieve this aim by appropriate hopping between the channels at each decision stage. The proposed protocol is based on the rule of least failures that is deployed by each user independently. Using this rule, at each decision stage, a channel with the least number of recorded collisions with the primary and other cognitive users is selected for exploitation. The performance of the proposed protocol for multiple cognitive users is investigated analytically and verified by simulation. It is shown that as the number of users increases the user decision under this protocol comes close to the optimum decision to maximize its own utilization. In addition, to improve opportunity utilization in the case of a large number of cognitive users, an extension to the proposed MAC protocol is presented and evaluated by simulation.

Publication: IEICE TRANSACTIONS on Communications Vol.E92-B No.12 pp.3693-3700

Publication Date: 2009/12/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E92.B.3693

Type of Manuscript: Special Section PAPER (Special Section on Dynamic Spectrum Access)

Category: Protocols

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Abdorasoul GHASEMI, S. Mohammad RAZAVIZADEH, "A Simple MAC Protocol for Cognitive Wireless Networks" in IEICE TRANSACTIONS on Communications, vol. E92-B, no. 12, pp. 3693-3700, December 2009, doi: 10.1587/transcom.E92.B.3693.
Abstract: A simple distributed Medium Access Control (MAC) protocol for cognitive wireless networks is proposed. It is assumed that the network is slotted, the spectrum is divided into a number of channels, and the primary network statistical aggregate traffic model on each channel is given by independent Bernoulli random variables. The objective of the cognitive MAC is to maximize the exploitation of the channels idle time slots. The cognitive users can achieve this aim by appropriate hopping between the channels at each decision stage. The proposed protocol is based on the rule of least failures that is deployed by each user independently. Using this rule, at each decision stage, a channel with the least number of recorded collisions with the primary and other cognitive users is selected for exploitation. The performance of the proposed protocol for multiple cognitive users is investigated analytically and verified by simulation. It is shown that as the number of users increases the user decision under this protocol comes close to the optimum decision to maximize its own utilization. In addition, to improve opportunity utilization in the case of a large number of cognitive users, an extension to the proposed MAC protocol is presented and evaluated by simulation.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.3693/_p

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@ARTICLE{e92-b_12_3693,
author={Abdorasoul GHASEMI, S. Mohammad RAZAVIZADEH, },
journal={IEICE TRANSACTIONS on Communications},
title={A Simple MAC Protocol for Cognitive Wireless Networks},
year={2009},
volume={E92-B},
number={12},
pages={3693-3700},
abstract={A simple distributed Medium Access Control (MAC) protocol for cognitive wireless networks is proposed. It is assumed that the network is slotted, the spectrum is divided into a number of channels, and the primary network statistical aggregate traffic model on each channel is given by independent Bernoulli random variables. The objective of the cognitive MAC is to maximize the exploitation of the channels idle time slots. The cognitive users can achieve this aim by appropriate hopping between the channels at each decision stage. The proposed protocol is based on the rule of least failures that is deployed by each user independently. Using this rule, at each decision stage, a channel with the least number of recorded collisions with the primary and other cognitive users is selected for exploitation. The performance of the proposed protocol for multiple cognitive users is investigated analytically and verified by simulation. It is shown that as the number of users increases the user decision under this protocol comes close to the optimum decision to maximize its own utilization. In addition, to improve opportunity utilization in the case of a large number of cognitive users, an extension to the proposed MAC protocol is presented and evaluated by simulation.},
keywords={},
doi={10.1587/transcom.E92.B.3693},
ISSN={1745-1345},
month={December},}

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TY - JOUR
TI - A Simple MAC Protocol for Cognitive Wireless Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 3693
EP - 3700
AU - Abdorasoul GHASEMI
AU - S. Mohammad RAZAVIZADEH
PY - 2009
DO - 10.1587/transcom.E92.B.3693
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2009
AB - A simple distributed Medium Access Control (MAC) protocol for cognitive wireless networks is proposed. It is assumed that the network is slotted, the spectrum is divided into a number of channels, and the primary network statistical aggregate traffic model on each channel is given by independent Bernoulli random variables. The objective of the cognitive MAC is to maximize the exploitation of the channels idle time slots. The cognitive users can achieve this aim by appropriate hopping between the channels at each decision stage. The proposed protocol is based on the rule of least failures that is deployed by each user independently. Using this rule, at each decision stage, a channel with the least number of recorded collisions with the primary and other cognitive users is selected for exploitation. The performance of the proposed protocol for multiple cognitive users is investigated analytically and verified by simulation. It is shown that as the number of users increases the user decision under this protocol comes close to the optimum decision to maximize its own utilization. In addition, to improve opportunity utilization in the case of a large number of cognitive users, an extension to the proposed MAC protocol is presented and evaluated by simulation.
ER -