상세정보
학술대회
WCDMA 이동통신시스템에서의 적응적 소프트 핸드오버 알고리즘
- 발행일
- 200303
- 출처
- Wireless Communications and Networking Conference (WCNC) 2003, pp.1213-1217
- 협약과제
- 03MM1100, 4세대 이동통신 기술개발, 한기철
- 초록
- In a mobile communication environment, an abrupt increase of mobile users in a specific cell causes an unbalanced traffic-load distribution. When the increased traffic-load exceeds the link capacity of a WCDMA system, it significantly degrades the traffic quality of the mobile users. In this paper, we propose an adaptive soft handover algorithm (ASHA) to efficiently alleviate the overloaded traffic in a cell by adjusting handover parameters. The proposed algorithm virtually reduces the service coverage of the overloaded cell without adjustment of base station transmission power. Consequently, mobile users located in the area farthest away from the heavily loaded cell site are handed over to lightly loaded neighboring cells, so that the traffic-load of the overloaded cell is decreased. The performance of the proposed algorithm is analyzed in path loss and shadow fading environments and is compared with that of a conventional soft handover algorithm.
- KSP 제안 키워드
- Communication Environment, Handover algorithm, Handover parameters, Link capacity, Load distribution, Path loss, Soft handover, Traffic loads, base station(BS), cell site, fading environments