Browse > Article

Suboptimal Adaptive Handover Method Considering Uplink and Downlink Signals  

Cho, Young-Bo (연세대학교 전기전자공학과 정보통신 연구실)
Han, Seung-Youp (연세대학교 전기전자공학과 정보통신 연구실)
Bang, Keuk-Joon (인덕대학 인터넷TV방송)
Hong, Dae-Sik (연세대학교 전기전자공학과 정보통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.12C, 2006 , pp. 1273-1279 More about this Journal
Abstract
In this paper, we address the design of adaptive handover schemes based on the signal strength measurement for cellular communications systems. Conventional handover algorithms, which are based only on the downlink measurement, cannot guarantee the required uplink quality because uplink channel can differ greatly from downlink channel quality. Therefore, we proposes a new suboptimal adaptive handover algorithm that considers both the uplink and downlink channel quality in order to achieve the best cell selection gains when there is a wide difference between the uplink and downlink signal quality. Simulation results show that the proposed scheme achieves better performance compared to conventional handover schemes.
Keywords
Handover; Suboptimal; Adaptive; Uplink signal; Quantization;
Citations & Related Records
연도 인용수 순위
  • Reference
1 IEEE C802.20-05/68, 'QFDD and QTDD: Technology Overview. 2006,' 2006
2 D. P. Bertsekas, Dynamic Programming and Optimal Control, Belmout, MA: Athena, 1995
3 M. Akar and U. Mitra, 'Variation on optimal and suboptimal handoff control for wireless communication systems,' IEEE J. Select. Areas Commun., vol. 19, no. 6, pp. 1173-1185, June 2001   DOI   ScienceOn
4 H. Kim and Y. Han, 'Enhanced correlated shadowing generation in channel simulation,' IEEE Comm. Letter., vol. 6, no. 7, pp. 279-281, July 2002   DOI   ScienceOn
5 R. Vijayan and J. M. Holtzman, 'On channel estimation in OFDM systems,' IEEE Trans. Veh. Technol., vol. 42, pp. 351-356, Aug. 1993   DOI   ScienceOn
6 M. Gudmundson, 'Correlation model for shadow fading in mobile radio systems,' Electron Letter, vol. 27, no. 23, pp. 2145-2146, Nov. 1991   DOI   ScienceOn
7 N. Zhang and J. M. Holtzman, 'Analysis of handoff handoff algorithm; using both absolute and relative measurement,' IEEE Trans. Veh. Technol., vol. 45, pp. 174-179, Feb. 1996   DOI   ScienceOn
8 V. V. Veeravalli and O. E. Kelly, 'A locally opdmal handoff algorithm for cellular communications,' IEEE Trans. Veh. Technol., vol. 46, pp. 603-610, Aug. 1997   DOI   ScienceOn