Browse > Article

Inter-cell DCA Algorithm for Downlink Wireless Communication Systems  

Kim, Hyo-Su (강원대학교 전자통신공학과)
Kim, Dong-Hoi (강원대학교 전자통신공학과)
Park, Seung-Young (강원대학교 전자통신공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.7A, 2008 , pp. 693-701 More about this Journal
Abstract
In OFDMA (Orthogonal Frequency Division Multiple Access) system that frequency reuse factor is 1, as the same channels in the neighborhood cells creates inter-cell co-channel interference which provides a resource underutilization problem, channel allocation schemes to minimize inter-cell interference have been studied. This paper proposes a new CNIR (Carrier to Noise and Interference Ratio)-based distributed Inter-cell DCA (Dynamic Channel Allocation) algorithm in the OFDMA environment with frequency reuse factor of 1. When a channel allocation is requested, if there is not a free channel in home cell or the available free channels in home cell do not satisfy a required threshold value, the proposed Inter-cell DCA algorithm finds CNIR values of available free channels in the neighborhood cells and then allocates a free channel with maximum CNIR value. Through the simulation results, we find that the proposed scheme decreases both new call block rate and forced termination rate due to new call generation at the same time because it increases channel allocation probability.
Keywords
Dynamic channel allocation; OFDMA; Newcall block rate; Forced termination rate; System throughput;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Z. Wang and R. S-Gallacher, "Frequency reuse scheme for cellular OFDM systems" Electronics Letters, Vol.38, No.8, pp.387-388, Apr. 2002   DOI   ScienceOn
2 H. Harada and R. Prasad, Simulation and software radio for mobile communications, Artech House Publisher May 2002
3 N. Lee and S. Bahk, "Dynamic channel allocation using the interference range in multi-cell downlink systems," in Proc. IEEE WCNC, pp.1716-1721, March 2007
4 G. Li and H. Liu "Downlink dynamic resource allocation for multicell OFDMA system," in Proc. IEEE VTC Fall 2003
5 I.Katzela and M.naghshineh, "Channel Assignment Schemes for Cellular Mobile Telecommunication Systems : A Comparative Study" IEEE Personal Communications, Vol.3, june 1996, pp.10-31
6 3GPP2 Technical Specification Group C R1002, 1xEV-DV Evaluation Methodology (v13.1), 2003
7 J. S. Lee and L. E. Miller, CDMA System Engineering Handbook, Cambridge Univ. Press, 1992
8 E. Oh, M. Cho, S. Han, C. Woo, D. Hong "Performance analysis of dynamic channel allocation based on reuse partitioning in multi-cell OFDMA uplink systems," IEICE Trans. Fundamental, Vol.E89-A, No.6, June 2006
9 Recommendation ITU-R M.1225, Guidelines for Evaluation of Radio Transmission Technologies for IMT-2000, 1997
10 S. Yoon, Y. Cho, C.-B. Chae, and H. Lee, "System level performance of OFDMA forward link with proportional fair scheduling," in Proc. PIMRC, Vol.2, pp.1384-1388, Sep.2004
11 D. P. Agrawal and Q. Zeng, Introduction to Wireless and Mobile Systems. University of Cincinnati Press, 2004
12 E. Gelenbe and G. Pujolle, Introduction to Queuing Networks, New York: John Wiley & Sons,1987
13 3GPP TR 25.892 V1.1.0, Feasiblity Study for OFDM for UTRAN Enhancement (Release 6), May 2004
14 J. Heo, I. Cha, K. Chang, "A novel transmit power allocation algorithm combined with dynamic channel allocation in reuse partitioning - based OFDMA/FDD system," in Proc. IEEE ICC, pp.5654-5659, 2006
15 D. Kivanc, G. Li, and H. Liu, "Computationally efficient bandwidth allocation and power control for OFMDA," IEEE Trans. Wireless Commun., Vol.2, No.6, pp.1150-1158, Nov. 2003   DOI   ScienceOn