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http://dx.doi.org/10.7840/KICS.2012.37.6B.474

Design and Implementation of a Multi-Interface Mobile Gateway for Seamless Handoff Sciences  

Choi, Hyun-Jun (부산대학교 컴퓨터공학과 이동통신연구실)
Lee, Chae-Seok (부산대학교 컴퓨터공학과 이동통신연구실)
Lee, Sung-Ho (국방과학연구소)
Kim, Jong-Deck (부산대학교 정보컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37, no.6B, 2012 , pp. 474-482 More about this Journal
Abstract
Mobile Gateway(MG) is a wireless LAN device to provide internet services to a passenger on vehicles like a bus. For using internet services, MG connects the Road Side Unit AP(RSU AP) based on WLAN .To provide a stable communication service on the moving vehicle, handoff changing MG's RSU must be handled fast and stably. However, it has a physical limits to remove a disconnection time of handoff process by reason of its technological features. In this paper, we suggest a MIMG(Multi-Interface Mobile Gateway) executing seamless handoff by using multiple wireless LAN interfaces for connecting RSU. In the detailed way to do stable handoff, we suggest the "Link Sharing Technique" to disconnection time of packet transmission for RSU to MIMG and the "Path Sharing Technique" to remove disconnection time of packet transmission for MIMG to RSU. we implemented the MIMG which performs the suggested handoff technique. We confirmed the superiority of our system by remove of the disconnection time(0 ms), and improved over 50 % of the communication bandwidth.
Keywords
Multi-Interface; Mobile Gateway; Seamless Handoff;
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