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Fast-Handover WLAN Testbed in YRP for Mobile Internetworking Masaki Hirabaru (NICT) January 24, 2006 Network Engineering Workshop 21st APAN Meeting in.

Published byBruno Donald Davis Modified over 9 years ago

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Presentation on theme: "Fast-Handover WLAN Testbed in YRP for Mobile Internetworking Masaki Hirabaru (NICT) January 24, 2006 Network Engineering Workshop 21st APAN Meeting in."— Presentation transcript:

1 Fast-Handover WLAN Testbed in YRP for Mobile Internetworking Masaki Hirabaru (NICT) January 24, 2006 Network Engineering Workshop 21st APAN Meeting in Tokyo

2 NICT Koganei NICT Yokosuka ROOT, Inc. Keio Univ. Teraoka Lab. Tokyo Inst. Tech. Ohta Lab. Univ. of Tokyo Morikawa Lab. Chikushi Jogakuen U. Kyoto Univ. Fujikawa Lab. ASTEM …. SIMPLE Project Members

3 SIMPLE Mobile Internet Architecture M-ISP AM-ISP BM-ISP C The Internet APs channel #1channel #2channel #3channel #N … User a, b, c Wide Shared Channel 1 PDMA (Packet Division Multiple Access) Broadband No Frequency Allocation Issue The Internet M-ISP Installs APs with Fiber/ADSL from ISP M-ISP owns APs only APs Static allocation + CDMA CDMA only

4 PFI Poles JGN2 APAN Internet 7F PFI Rack YRP #1 Bldg. *PFI: Private Finance Initiative by Keihin Electric Express Railway Co., Ltd. 3F 2F 1F MN Rack MIRAI SMP CADS MR YRP #1 Bldg. (NICT Yokosuka) JGN II AP Juniper M10 Mobile Network Lab Point-to-Point Optical Fibers Tokyo XP Univ. of Tokyo SIMPLE YRP (Yokosuka Research Park) Testbed Other partner Institutions NICT Koganei HAAUTH HA AUTH temporary Installation MA WIDE Pole Distance: 70-150 m Total Run: ~1Km Antenna: 8 dBi Collinear Frequency: 5050, 5070 Mhz (center) Bandwidth: 36Mhz Transmit Power: 28 mW

5 Two Research Approaches in SIMPLE 802.11 L3 Driven H/O LIN6 (IPv6) 802.11 w/o MGM MBA MISP MBA Mobile IP (IPv4) Intel-based Wireless Router with Atheros Chip MBB H/O 802.11 MGM FreeBSDNetBSD Internet Applications * MBA (Mobile Broadband Association, http://www.mbassoc.org)

6 No Channel Scan Simultaneous Associations Channel Scan Make-before-Break Handover Mechanism A Channel Scan B Disruption = Packet Loss Minimize the gap AB A B Overlap (Make-before-Break) TR1 MN TR2 Traditional (IETF)Dual TransceiversPDMA AB Overlap (Make-before-Break) TR

7 Antenna Authentication Server Home Agent PC VoIP Mobile router AP1 (router)AP2 (router)AP11 (router) The Internet camera The same channel (PDMA) Handover … AuthenticationIP address Subnet 1Subnet 2Subnet 3 YRP (Yokosuka Research Park) Testbed Field Trial Mapping Agent

8 DVTS Transfer from Vehicle to Office (Half Rate ~15 M bps)

9 UDP Data Transfer from Vehicle to Office (58 Bytes, 1000 Packets / sec, ~1 M bps) No packet loss

10 Mobile to Mobile Transmission Experiment over APAN Future Plan

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