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Mixed Contiguous and Aggregated Spectrum Allocation Algorithm for CR based TD-LTE System
WSPN Lab. Key Laboratory of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, China
WSPN Lab. Key Laboratory of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, China
WSPN Lab. Key Laboratory of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, China
WSPN Lab. Key Laboratory of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, China
WSPN Lab. Key Laboratory of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, China
- 1 WSPN Lab. Key Laboratory of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, China
- 2 WSPN Lab. Key Laboratory of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, China
- 3 WSPN Lab. Key Laboratory of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, China
- 4 WSPN Lab. Key Laboratory of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, China
- 5 WSPN Lab. Key Laboratory of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, China
Communications and Network·Volume 05 (2013)·Pages 298–302·Published 27 September 2013·DOI10.4236/cn.2013.53B2055
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Abstract
Cognitive Radio (CR) is a promising technology to increase the efficiency of spectrum by opportunistic access. However, in many cases the sensed spectrum is so broken that it cannot be utilized sufficiently with traditional continuous spectrum allocation strategy. Spectrum aggregation can make full use of narrow spectrum fragments while the overhead it brings may reduce the overall performance of the system. This paper proposes a Mixed Contiguous and Aggregated Spectrum Allocation (MixCASA) algorithm for CR based TD-LTE Networks. This algorithm combines contiguous with discontiguous spectrum allocation together in order to guarantee the feasibility and efficiency of system. Simulation results show that the MixCASA algorithm can increase the number of allocated channels, and reduce the overhead brought by excessive spectrum aggregation as well.
KeywordsCognitive RadioTD-LTESpectrum AllocationSpectrum Aggregation
- “LTE: The UMTS Long Term Evolution,” New York: John Wiley & Sons, 2009.
- I. F. Akyildiz, W. Y. Lee, M. C. Vuran, et al., “Next Generation/Dynamic Spectrum Access/cognitive Radio Wireless Networks: A Survey,” Computer Networks, Vol. 50, No. 13, 2006, pp. 2127-2159. doi:10.1016/j.comnet.2006.05.001
- I. F. Akyildiz, W. Y. Lee, M. C. Vuran, et al., “A Survey on Spectrum Management in Cognitive Radio Networks,” Communications Magazine, IEEE, 2008, pp. 40-48.
- L. Chen, W. Chen, X. Zhang, et al., “Analysis and Simulation for Spectrum Aggregation in LTE-advanced System,” Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th. IEEE, 2009, pp. 1-6.
- Z. Shen, A. Papasakellariou, J. Montojo, et al., “Overview of 3GPP LTE-advanced Carrier Aggregation for 4G Wireless Communications,” Communications Magazine, IEEE, Vol. 50, No. 2, 2012, pp. 122-130. doi:10.1109/MCOM.2012.6146491
- M. Masmano, I. Ripoll, P. Balbastre, et al., “A Constant-time Dynamic Storage Allocator for Real-time Systems,” Real-Time Systems, Vol. 40, No. 2, 2008, pp. 149-179. doi:10.1007/s11241-008-9052-7
- M. Hamid, A. Mohammed and Z. Yang, “On Spectrum Sharing and Dynamic Spectrum Allocation: MAC Layer Spectrum Sensing in Cognitive Radio Networks,” Communications and Mobile Computing (CMC), 2010 International Conference on IEEE, 2010, Vol. 2, pp. 183-187.
- M. Lee and T. J. Lee, “Multichannel MAC Protocol with Discontiguous-OFDM for Cognitive Radio Networks,” Informatics Engineering and Information Science, Springer Berlin Heidelberg, 2011, pp. 594-603. doi:10.1007/978-3-642-25462-8_53
- Chen Y S, Liao S H. “Spectrum-aware routing in discontinuous orthogonal frequency division multiplexing-based cognitive radio ad hoc networks,” Networks, IET, Vol. 1, No. 1, 2012, pp. 20-33. doi:10.1049/iet-net.2011.0002
- Poston J D, Horne W D. “Discontiguous OFDM Considerations for Dynamic Spectrum Access in Idle TV Channels,” New Frontiers in Dynamic Spectrum Access Networks, DyS-PAN, First IEEE International Symposium on. IEEE, 2005, pp. 607-610.
- Y. Li, L. Zhao, C. Wang, et al., “Aggregation-based Spectrum Allocation Algorithm in Cognitive Radio Networks,” Network Operations and Management Symposium (NOMS), IEEE, 2012, pp. 506-509.
- F. Huang, W. Wang, H. Luo, et al., “Prediction-Based Spectrum Aggregation with Hardware Limitation in Cognitive Radio Networks,” Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st., 2010, pp. 1-5.