Optimal Queue Scheduling for Hybrid Cognitive Radio Maintaining Maximum Average Service Rate Under Delay Constraints
Optimal Queue Scheduling for Hybrid Cognitive Radio Maintaining Maximum Average Service Rate Under Delay Constraints
As a promising technique of improving the attainable bandwidth efficiency, cognitive radio (CR) has attracted substantial attention from both the academic and industrial communities. In order to improve the performance of the secondary user (SU), a novel hybrid CR system is introduced, which combines the conventional interweave and underlay paradigms for enhancing the chances of the SU to access the spectrum. Queuing theory is invoked in this paper for analysing the impact of the primary user's (PU) delay tolerance on the performance of the SU. Multiple queues are assumed for the SU engaging in video communication. Besides the Poisson traffic generation, we model a Rayleigh fading channel as a Poisson service process with the aid of the outage probability in the presence of cochannel interferences. Two valuable goals are achieved, namely that of maximizing the average service rate and minimizing the overall average delay of the SU's multiple queues. As our numerical results demonstrate, the overall average delay of the SU becomes 27% and 34% lower than that of the Proportional as well as that of the Round-Robin schemes respectively.
978-1-4673-0919-6
1398-1403
Hu, Jie
84967196-e5da-49dc-8a0d-4e2507a5fcde
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
3 December 2012
Hu, Jie
84967196-e5da-49dc-8a0d-4e2507a5fcde
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Hu, Jie, Yang, Lie-Liang and Hanzo, Lajos
(2012)
Optimal Queue Scheduling for Hybrid Cognitive Radio Maintaining Maximum Average Service Rate Under Delay Constraints.
2012 IEEE Global Communications Conference (GLOBECOM), , Anaheim, United States.
03 - 07 Dec 2012.
.
(doi:10.1109/GLOCOM.2012.6503309).
Record type:
Conference or Workshop Item
(Paper)
Abstract
As a promising technique of improving the attainable bandwidth efficiency, cognitive radio (CR) has attracted substantial attention from both the academic and industrial communities. In order to improve the performance of the secondary user (SU), a novel hybrid CR system is introduced, which combines the conventional interweave and underlay paradigms for enhancing the chances of the SU to access the spectrum. Queuing theory is invoked in this paper for analysing the impact of the primary user's (PU) delay tolerance on the performance of the SU. Multiple queues are assumed for the SU engaging in video communication. Besides the Poisson traffic generation, we model a Rayleigh fading channel as a Poisson service process with the aid of the outage probability in the presence of cochannel interferences. Two valuable goals are achieved, namely that of maximizing the average service rate and minimizing the overall average delay of the SU's multiple queues. As our numerical results demonstrate, the overall average delay of the SU becomes 27% and 34% lower than that of the Proportional as well as that of the Round-Robin schemes respectively.
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Published date: 3 December 2012
Venue - Dates:
2012 IEEE Global Communications Conference (GLOBECOM), , Anaheim, United States, 2012-12-03 - 2012-12-07
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 346079
URI: http://eprints.soton.ac.uk/id/eprint/346079
ISBN: 978-1-4673-0919-6
PURE UUID: 75bbecd7-a184-408d-99ce-c258d5b18821
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Date deposited: 10 Dec 2012 20:57
Last modified: 18 Mar 2024 02:49
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Author:
Jie Hu
Author:
Lie-Liang Yang
Author:
Lajos Hanzo
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