ABSTRACT
The next generation of radio wireless networks is expected to support spectrum decision operations that will allow a cognitive radio terminal to share the frequency bandwidth with primary users without impairing their QoS requirements. This can indeed enhance the utilization of the limited spectrum resources, and help meet the growing bandwidth demand. In this paper, we propose a new, cross-layer algorithm that allows a cognitive terminal to share and access to either HSDPA or WiMAX licensed spectrum while giving priority to the primary users. This algorithm not only considers the interference caused by the cognitive terminal, but also enhances the achievable throughput of this cognitive terminal. Simulation results show the effectiveness of our spectrum access scheme. Under our proposed scheme, the achievable data rate of the cognitive radio terminal is increased by 30% when compared with that obtained under common access schemes.
- Report of the Spectrum Efficiency WG, Spectrum Policy Task Force (SPTF), FCC, Nov. 2002.Google Scholar
- I. F. Akyildiz, W-Y. Lee, M. C. Vuran, S. Mohanty, "NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey", Computer Networks: The International Journal of Computer and Telecommunications Networking archive, September 2006, Volume 50, Issue 13, pp. 2127--2159. Google ScholarDigital Library
- Long Le; Hossain, E.; "QoS-Aware Spectrum Sharing in Cognitive Wireless Networks", Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE, 26--30 Nov. 2007, pp. 3563--3567.Google Scholar
- Auer, G.; Haas, H.; Omiyi, P.; "Interference Aware Medium Access for Dynamic Spectrum Sharing", New Frontiers in Dynamic Spectrum Access Networks, 2007. DySPAN 2007. 2nd IEEE International Symposium on, 17--20 April 2007, pp. 399--402.Google Scholar
- Hanaoka, Seishi; Yamamoto, Junji; Wakayama, Koji; Yoshizawa, Satoshi; Hirata, Tetsuhiko, "Simulation and Basic Experiment of Inter Radio System Handover for Cognitive Radio", Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on, 3--7 Sept. 2007, pp. 1--5.Google Scholar
- Houze, P.; Ruiz, D.; Ben Jemaa, S.; Cordier, P., "Dynamic Spectrum Allocation Algorithm for Cognitive Networks", Wireless and Mobile Communications, 2007. ICWMC '07. Third International Conference on, 4--9 March 2007, pp. 25--25. Google ScholarDigital Library
- 3GPP, Technical Specification Group Radio Access Network: Improvement of RRM across RNS and RNS/BSS (Post Rel-5) (Release 6), 3GPP TR 25.891 version 0.3.0.Google Scholar
- Perez-Romero, J.; Sallent, O.; Agusti, R.; Wang, L.; Aghvami, H.; "A Novel Algorithm for Radio Access Technology, Selection in Heterogeneous B3G networks", Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd, Volume 1, 2006, pp. 471--475.Google ScholarCross Ref
- O. E. Falowo, H. Anthony Chan, "Adaptive BandwidthManagement and Joint Call Admission Control to Enhance System Utilization and QoS in Heterogeneous Wireless Networks", EURASIP Journal on Wireless Communications and Networking, Volume 2007, 11 pages. Google ScholarDigital Library
- A. Samhat, R. Nasri, Z. Altman, "Joint Mobility RRM Algorithms for Heterogeneous Access Networks", published in European Wireless 2007 proceedings, 1--4 April 2007.Google Scholar
- IEEE 802.16 Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems--July 2008.Google Scholar
- 3GPP, Technical Specification Group Radio Access Network: Physical layer procedures (FDD) (Release 7), 3GPP TR 25.214 version 7.0.0.Google Scholar
Index Terms
- Dynamic spectrum access in heterogeneous networks: HSDPA and WiMAX
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