IPSJ SIG Technical Report * Wi-Fi Survey of the Internet connectivity using geolocation of smartphones Yoshiaki Kitaguchi * Kenichi Nagami and Yutaka

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1 * Wi-Fi Survey of the Internet connectivity using geolocation of smartphones Yoshiaki Kitaguchi * Kenichi Nagami and Yutaka Kikuchi With the rapid growth in demand of smartphone use, the development of Wi-Fi spot will continue to progress by telecommunications carriers. Nowadays, the user is becoming available to choose from a variety access line, however, can not determine which is better access line at the time. In this study, we aim to provide the information of communication link in that location for smartphone users. In this paper, we report the purpose of this study, and state a finding obtained by a trial experiment by the simple application. 1. Wi-Fi 2. CAIDA BGP traceroute [1] RIPE BGP [2] ISP * Information Media Center, Kanazawa University INTEC Inc. Research Organization for Regional Alliances, Kochi University of Technology 1

2 mobiperf[3] NAT [4] [5] (1) IP BGP BGP (2) DNS IP 3G LAN 1 3G IX Internet exchange LAN IX ITU-T I.350 Y.1540 Y.1541 Y QoS TCP/IP ISP AS TTL MSS 2

1 Y.1541 QoS QoS Classes Class 0 Class 1 Class 2 Class 3 Class 4 Class5 IPTD 100 ms 400 ms 100 ms 400 ms 1 s unspecified IPDV 50 ms 50 ms unspecified unspecified unspecified unspecified IPLR 1 x 10-3

3 1 Y.1541 QoS QoS Classes Class 0 Class 1 Class 2 Class 3 Class 4 Class5 IPTD 100 ms 400 ms 100 ms 400 ms 1 s unspecified IPDV 50 ms 50 ms unspecified unspecified unspecified unspecified IPLR 1 x x x x x 10-3 unspecified IPER 1 x 10-4 unspecified ICMP Ping HTTP [6][7] PC ios raw root 3G LAN 3G LAN GPS PC DoCoMo au NITZ i SoftBank GMM Information ii [8] (1) (2) (3) iphone [6][7] HTTP MSS TTL MSS 3 iphone HTTP ICMP ICMP IP 3 iphone 3G 0.01 iii 2 Area A Area B i NITZ (Network Identity and Time Zone) 3GPP 3G ii GMM (GSM/GPRS Mobility Management) Information GSM/GPRS W-CDMA iii 0.01km 2 3

4 3 iphone 4.1 HTTP TCP ICMP 4 5 ICMP 2msec 1000msec 1 ICMP TCP 3msec ICMP HTTP TCP ICMP 100% TCP 4.2 TCP 3G TCP ICMP 3G 4 A HTTP ICMP 4

5 TCP 5. 5 B HTTP ICMP 1) Research at CAIDA, 2) Routing Information Service (RIS), 3) MOBIPERF, 4) Mike P. Wittie, Brett Stone-Gross, Kevin C. Almeroth and Elizabeth M. Belding, MIST: Cellular Data Network Measurement for Mobile Applications, Proceedings of IEEE Broadnets (2007). 5) Kaoru Yoshida, Yutaka Kikuchi, Masateru Yamamoto, Yoriko Fujii, Ken'ichi Nagami, Ikuo Nakagawa, and Hiroshi Esaki. Inferring POP-level ISP topology through end-to-end delay measurement. In Passive and Active Measurement Conference, Vol of LNCS, pp. pp Springer (2009). 6),,, HTTP IPv4 IPv6,, vol. 110, no. 206, IA , pp (2010). 7),,, HTTP IPv4 IPv6,.IOT, 2011-IOT-12(16), pp.1-6 (2011). 8),,,, PC,, vol.j87-b no.10, pp (2004). 5

6 1 Research at CAIDA, 2 Routing Information Service (RIS), 3 MOBIPERF, 4 Mike P. Wittie, Brett Stone-Gross, Kevin C. Almeroth and Elizabeth M. Belding, MIST: Cellular Data Network Measurement for Mobile Applications, Proceedings of IEEE Broadnets (2007). 5 Kaoru Yoshida, Yutaka Kikuchi, Masateru Yamamoto, Yoriko Fujii, Ken'ichi Nagami, Ikuo Nakagawa, and Hiroshi Esaki. Inferring POP-level ISP topology through end-to-end delay measurement. In Passive and Active Measurement Conference, Vol of LNCS, pp. pp Springer (2009). 6,,, HTTP IPv4 IPv6,, vol. 110, no. 206, IA , pp (2010). 7,,, HTTP IPv4 IPv6,.IOT, 2011-IOT-12(16), pp.1-6 (2011). 8,,,, PC,, vol.j87-b no.10, pp (2004). 6

8 P2P P2P (Peer-to-Peer) P2P P2P As Internet access line bandwidth has increased, peer-to-peer applications have been increasing and have great impact

8 P2P P2P (Peer-to-Peer) P2P P2P As Internet access line bandwidth has increased, peer-to-peer applications have been increasing and have great impact 8 P2P (Peer-to-Peer) P2P P2P As Internet access line bandwidth has increased, peer-to-peer applications have been increasing and have great impact on networks. In this paper, we review traffic issues for