Adaptive QoS-aware channel access scheme for Cognitive Radio networks

Authors:
Li Zhang;Guoxin Zheng
Affiliations:
School of Communication and Information Engineering, Shanghai University, Room 1017, Xingjian Building, No. 149, Yanchang Road, 200072 Shanghai, China.;School of Communication and Information Engineering, Shanghai University, Room 1017, Xingjian Building, No. 149, Yanchang Road, 200072 Shanghai, China
Venue:
International Journal of Ad Hoc and Ubiquitous Computing
Year:
2010

Citing 12
Cited 4

NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey

Computer Networks: The International Journal of Computer and Telecommunications Networking
Cognitive Wireless Communication Networks

Cognitive Wireless Communication Networks
Performance assessment of service differentiation in IEEE 802.11e Wireless LANs

International Journal of Ad Hoc and Ubiquitous Computing
Mobile agent location management in global networks

International Journal of Information and Communication Technology
An improved heuristic for permutation flowshop scheduling

International Journal of Information and Communication Technology
Sequencing technique: an enhancement to 802.11 medium access control to improve the performance of wireless networks

International Journal of Communication Networks and Distributed Systems
Dynamic adaptation of CSMA/CA MAC protocol for wide area wireless mesh networks

Computer Communications
Efficient Discovery of Spectrum Opportunities with MAC-Layer Sensing in Cognitive Radio Networks

IEEE Transactions on Mobile Computing
Distributed power control and random access for spectrum sharing with QoS constraint

Computer Communications
An efficient quiet period management scheme for cognitive radio systems

IEEE Transactions on Wireless Communications
Capacity limits of cognitive radio with distributed and dynamic spectral activity

IEEE Journal on Selected Areas in Communications
Cross-Layer Based Opportunistic MAC Protocols for QoS Provisionings Over Cognitive Radio Wireless Networks

IEEE Journal on Selected Areas in Communications

A sensing policy based on the statistical property of licensed channel in cognitive network

International Journal of Internet Protocol Technology
Security aspects in the cognition cycle of distributed cognitive radio networks: a survey from a multi-agent perspective

International Journal of Ad Hoc and Ubiquitous Computing
Collaborative spectrum sensing by combining energy and cyclostationarity-based detection schemes

International Journal of Ad Hoc and Ubiquitous Computing
Collaborative spectrum sensing by combining energy and cyclostationarity-based detection schemes

International Journal of Ad Hoc and Ubiquitous Computing

Quantified Score

Hi-index	0.00

Visualization

Abstract

This paper proposes a three-dimensional traffic model, which can identify and utilise those under-utilised channel opportunities efficiently. Based on this model, an opportunistic channel access scheme, named Adaptive Opportunistic Channel Access (AOCA) schedule algorithm, is presented. It can adaptively schedule channel sensing leveraging the Media Access Control (MAC) layer decisions and maximise channel utilisation without imposing any additional burden on CUs and extra interference on licensed users. Moreover, it can provide cognitive users with Quality of Service (QoS) support. Finally, the simulation results demonstrate that the proposed channel schedule scheme can utilise the channel effectively and flexibly in CR networks.