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Sensors 2015, 15(9), 23706-23726; doi:10.3390/s150923706

A Novel Component Carrier Configuration and Switching Scheme for Real-Time Traffic in a Cognitive-Radio-Based Spectrum Aggregation System

1,2,†
,
1,2,†,* and 1,2,†
1
Harbin Institute of Technology Communication Research Center, Harbin 150001, China
2
Key Laboratory of Police Wireless Digital Communication, Ministry of Public Security, Harbin 150001, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Leonhard M. Reindl
Received: 31 July 2015 / Revised: 30 August 2015 / Accepted: 11 September 2015 / Published: 17 September 2015
(This article belongs to the Section Sensor Networks)
View Full-Text   |   Download PDF [785 KB, uploaded 17 September 2015]   |  

Abstract

In spectrum aggregation (SA), two or more component carriers (CCs) of different bandwidths in different bands can be aggregated to support a wider transmission bandwidth. The scheduling delay is the most important design constraint for the broadband wireless trunking (BWT) system, especially in the cognitive radio (CR) condition. The current resource scheduling schemes for spectrum aggregation become questionable and are not suitable for meeting the challenge of the delay requirement. Consequently, the authors propose a novel component carrier configuration and switching scheme for real-time traffic (RT-CCCS) to satisfy the delay requirement in the CR-based SA system. In this work, the authors consider a sensor-network-assisted CR network. The authors first introduce a resource scheduling structure for SA in the CR condition. Then the proposed scheme is analyzed in detail. Finally, simulations are carried out to verify the analysis on the proposed scheme. Simulation results prove that our proposed scheme can satisfy the delay requirement in the CR-based SA system. View Full-Text
Keywords: RT-CCCS; real-time traffic; spectrum aggregation; resource scheduling; cognitive radio RT-CCCS; real-time traffic; spectrum aggregation; resource scheduling; cognitive radio
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fu, Y.; Ma, L.; Xu, Y. A Novel Component Carrier Configuration and Switching Scheme for Real-Time Traffic in a Cognitive-Radio-Based Spectrum Aggregation System. Sensors 2015, 15, 23706-23726.

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