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Analysis of Wireless Network in Freight Container Terminal and Methods for Service Quality Enhancement  

Han, Seung-Ho (부산대학교 컴퓨터공학과 이동통신 연구실)
Park, Hyun-Sung (부산대학교 컴퓨터공학과 이동통신 연구실)
Kim, Jong-Deok (부산대학교 컴퓨터공학과 이동통신 연구실)
Kim, Yong-Jin ((주)신선대컨테이너터미널)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.3B, 2009 , pp. 235-246 More about this Journal
Abstract
The number of industry wireless networks based on IEEE 802.11 WLAN technology deployed in large outdoor work sites, such as freight container terminal, is increasing these days. Wider service coverage, frequent movements of stations and high requirement on service reliability are main characteristics of these networks compared to the conventional IEEE 802.11 networks used in home, office and school. While the importance of these networks Bets higher, we can hardly find previous studies including concrete analysis on these networks based on actual experiments. We carried out several field experiments at a freight container terminal to analyze its IEEE 802.11 network and found out some problematic situations, such as over 50% retransmission rates and frequent disruption of communication link while a station is moving. We explain why these problematic situations happen and suggest some solutions, such as application of mesh technology, smart handoff based on location and movement pattern and adjustment of signal strength and channel allocation. Methods and tools used in the experiments are also detailed in the paper which may be helpful for similar future studies.
Keywords
IEEE 802 11 무선랜;컨테이너 터미널;무선 네트워크;핸드오프;로밍;
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  • Reference
1 IEEE Standard for Wireless LAN-Medium Access Control and Physical Layer Specification, P802.11, 1999
2 S. Kouhbor, J. Ugon, A. Kruger, A. M. Rubinov, 'Optimal Placement of Access Point in WLAN Based on a New Algorithm', ICMB, pp. 592-598, IEEE Computer Society, 2005
3 S. T. Sheu, W. H. Hsu, H. C. Yin, C. W. Lai, 'Smart Handoff Scheme for Supporting Roaming between WLAN and GPRS Networks', IEICE Transactions, Vol. 88-B, Number 4, pp. 1364-1373, 2005   DOI
4 ISO/IEC 24730-1:2006 Information technology real-time locating systems (RTLS) Part 1: Application program interface
5 P. Kyasanur, N. H. Vaidya, 'Routing and interface assignment in multi-channel multi-interface wireless networks', Wireless Communications and Networking Conference, IEEE, 2005
6 V. Navda, A. P. Subramanian, K. Dhanasekaran, A. Timm-Giel, S. R. Das, 'MobiSteer: using steerable beam directional antenna for vehicular network access', MobiSys, pp. 192-205, ACM, 2007
7 Kismet: 802.11 layer2 wireless network detector, sniffer, and intrusion detection system. http://www.kismetwireless.net
8 박현성, 송병구, 강동우, 양승철, 김종덕, '항만물류 환경을 위한 이동형 물류 메쉬 단말의 설계', 한국통신학회 하계종합학술발표회, Vol. 37, 2008년 7월
9 A. Raniwala, K. Gopalan, T. Chiueh, 'Centralized Channel Assignment and Routing Algorithms for Multi-Channel Wireless Mesh Networks', ACM Mobile Computing and Communications Review (MC2R) Vol 8, No 2, pp. 50-65, April 2004.   DOI
10 EPCglobal, 'EPC$\texttrademark$ Radio-Frequency Identity Protocols Class-1 Generation-2 UHF RFID Protocol for Communications at 860 MHz - 960 MHz', Version 1.1.0, December 17, 2005
11 R. H. Jan, W. Y. Chiu, 'An approach for seamless handoff among mobile WLAN/ GPRS integrated networks', Computer Communications, pp. 32-41, 2005.   DOI   ScienceOn
12 T. V. Leeuwen, I. Moerman, P. Demeester, 'Location assisted fast vertical handover for UMTS/WLAN overlay networks', Computer Communications, Vol. 29, Number 13-14, pp. 2601-2611, 2006.   DOI   ScienceOn
13 S. K. Chui, O. C. Yue, 'An Access Point Coordination System for Improved VoIP/WLAN Handover Performance', VTC Spring, pp. 501-505, IEEE, 2006
14 M. Burton, 'Channel Overlap Calculations for 802.11b Networks', White Paper, Cirond Technologies Inc. http://www.cirond. com/WhitePapers/FourPoint.pdf
15 IEEE P802.11$s^{TM}$/D1.06 Draft Amendment to Standard for Information Technology - ESS Mesh Networking, November 2006.