DocumentCode :
3466169
Title :
An adaptive soft handover algorithm for traffic-load shedding in the WCDMA mobile communication system
Author :
Kim, Won-Ik ; Kang, Chang-Soon
Author_Institution :
Mobile Telecommun. Res. Lab., Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Volume :
2
fYear :
2003
fDate :
20-20 March 2003
Firstpage :
1213
Abstract :
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.
Keywords :
broadband networks; cellular radio; code division multiple access; telecommunication traffic; ASHA; WCDMA; adaptive soft handoff algorithm; base station transmission power; handover parameter; link capacity; mobile communication system; overloaded cell; path loss; shadow fading environments; traffic-load shedding; unbalance traffic-load distribution; Algorithm design and analysis; Base stations; Communication system traffic; Degradation; Fading; Mobile communication; Multiaccess communication; Performance analysis; Performance loss; Telecommunication traffic;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Conference_Location :
New Orleans, LA, USA
ISSN :
1525-3511
Print_ISBN :
0-7803-7700-1
Type :
conf
DOI :
10.1109/WCNC.2003.1200545
Filename :
1200545
Link To Document :
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