1. DoCoMo’s i-mode DoCoMo’s i-mode Toward Mobile Multimedia in 3G March 29, 2000 IETF 47, Plenary Session NTT Mobile Communications Network, Inc. Gateway Business Department & Multimedia Laboratories Presentation Material as of March, 2000

2. What is i-mode ? Mobile ISP and portal service from NTT DoCoMo, JapanMobile ISP and portal service from NTT DoCoMo, Japan Very light weight i-mode phone set with cellular phone & Internet capability (71g/2.5Oz)Very light weight i-mode phone set with cellular phone & Internet capability (71g/2.5Oz) Internet service using PDC-P(Personal Digital Cellular- Packet)Internet service using PDC-P(Personal Digital Cellular- Packet) Subset of HTML 3.0 for content descriptionSubset of HTML 3.0 for content description Started Operation in Feb. 1999Started Operation in Feb. 1999 Rapidly growing- 5 million users in ONE YEARRapidly growing- 5 million users in ONE YEAR Over 7,500 Information Providers, growing rapidlyOver 7,500 Information Providers, growing rapidly

3. Outline of Presentation Internet access from 2G cellular phone networkInternet access from 2G cellular phone network –Current i-mode service OverviewOverview Technology reviewTechnology review Roadmap to 3G cellular phone and InternetRoadmap to 3G cellular phone and Internet

4. We have successfully introduced the ”positive feedback” process of the Internet into the wireless world. Increase of applications/contents attracts more user and increase of user number attracts more applications/contents. Launched F501i P501i D501i, N501i 24,000/w 50,000/w ～ 70,000/w 4,500/w 80,000/w ～ 110,000/w F502i, D502i, N502i, P502i 5,159,184 (3/19) 501i 502i 200,000/w ～ 250,000/w

5. # of Subs （ 000 ） Aug. 8th Exceeded one million users ! NTT DoCoMo Confidential (Original-2 forcast) i-mode Subscriber Growth Projection (Original forecast) 3,000 4, 000 Oct. 18th Exceeded two million users ! Dec. 23rd Exceeded three million users ! Feb. 12th Exceeded four million users ! Mar. 15th Exceeded five million users

6. Strategy: The Mobile ISP and Portal ISP Private-LAN Personal PC-User 3-4million Internet DoCoMo Gateway Server Information Provider Information Provider When you focus on the number of Internet users for private use, it is far from ’critical mass’ for major IP in Japan. However, if you can count on all cellular phone users of DoCoMo, IP can easily reach economies of scale for its own service. Internet User Around 17 million Source: Telecommunications Carriers Association, Dec 99, Japanese Government DoCoMo Cellular Phone User 28 million Cellular Phone User 48 million Japanese Population: 125 million Japanese Market

7. DoCoMo “ i- mode” (PDC-P) Portal Service Based on User Profile DB Information Bill Collection System We offer a portal homepage customized by user profile so that users can easily access Information Providers’ web sites. Service Overview Cellular-phone Network Voice (PDC) mail (incl. e-mail) Transaction ・ Banking ・ Security Trading ・ Ticket Reservation ・ Airline Information/Reservation ・ Credit Card Information ・ Book Sales etc. Data base ・ Telephone Directory Search (Yellowpage) ・ Restaurant Guide ・ Dictionary Service ・ Cooking Recipe etc. Information ・ News Updates ・ Weather Information ・ Sports News ・ Stock Quotes ・ Business/Technology News ・ Town Information ・ Horse Racing Information etc. Entertainment ・ Network Game ・ Character Download ・ Horoscope/Fortune telling ・ Karaoke Information/ Song Check ・ FM Radio Information ・ Club Event Information etc. Internet Web Sites

8. Technical Objective To provide personal Internet Web and mail service on digital cellular phone network - PDC (Personal Digital Cellular)To provide personal Internet Web and mail service on digital cellular phone network - PDC (Personal Digital Cellular) Packet mode to enable charges only on the amount of data transferred- (PDC-P)Packet mode to enable charges only on the amount of data transferred- (PDC-P) Mail: Push mail delivery to make the phone more attractiveMail: Push mail delivery to make the phone more attractive Web: Subset of HTML to lower the entry barrier for content providers by enabling them to use existing tools and contentsWeb: Subset of HTML to lower the entry barrier for content providers by enabling them to use existing tools and contents IP Technology to enable i-modeIP Technology to enable i-mode HTTP, SMTP, TCP/IP,...HTTP, SMTP, TCP/IP,...

9. i-mode uses PDC Packet Packet based charges (PDC-P) perfect for Web browsingPacket based charges (PDC-P) perfect for Web browsing –PDC-P network enables less expensive charges for text based data exchange. –Mobile phone is always ‘stand by’ to get/receive data. DoCoMo’sNetwork(PDC) IP DoCoMo’sPacketNetwork(PDC-P) IP Information provider provider Internet I-mode Servers Billing DB User DB Voice, Data via Modem Packet Data HTTP PDC: Personal Digital Cellular

10. Current Architecture of “i-mode” Current Architecture of “i-mode” HTML (subset) HTTP (HTTPS) TＬTＬ Phy. Layer Link Layer IP HTML (subset) Cellular Phone PPM (Packet Processing Module) M-PGW (M-Packet Gateway Module) Information Provider HTTP (HTTPS) IP (PMAP) TCP IP “HTML”, “HTTP” Layer Pass-through TCPTL Radio Link Layer Phy. Layer Corporate Network Internet Call ctl LAPD-M Phy. Layer Link Layer Phy. Layer Off the shelf Web server

11. Current i-mode protocol stack -radio portion --------------------------------------------------------------------------------------------------------------------- Layer Error Rate System Data Rate Layer Error Rate System Data Rate--------------------------------------------------------------------------------------------------------------------- AP E free HTTP AP E free HTTP--------------------------------------------------------------------------------------------------------------------- TL Mostly E free Stop-Go ARQ/Push/Connection oriented 9.6Kbps 1400B/pkt TL Mostly E free Stop-Go ARQ/Push/Connection oriented 9.6Kbps 1400B/pkt--------------------------------------------------------------------------------------------------------------------- Link Layer 10 -6 or better LAPD-M’ Selective Repeat ARQ 14kbps(3ch TDMA) Link Layer 10 -6 or better LAPD-M’ Selective Repeat ARQ 14kbps(3ch TDMA)--------------------------------------------------------------------------------------------------------------------- Phy. Layer 10 -2 -10 -4  /4 shifted QPSK FEC/BCH 42kbps Phy. Layer 10 -2 -10 -4  /4 shifted QPSK FEC/BCH 42kbps--------------------------------------------------------------------------------------------------------------------- LAPD-M’ and TL are standard of ARIB: RCR STD27X ARIB(Association of Radio Industries and Business) WWW.ARIB.OR.JP WWW.ARIB.OR.JP

12. Web page :Web page : Total size 5Kbyte(max), 2KByte(recommended) GIF picture 94x72 pixel Trans. HTTP Trans. HTTP Mail message :Mail message : Total size 500 bytes (250 Japanese characters) Trans. TL Push Trans. TL Push Bandwidth: 9,600 bit/secBandwidth: 9,600 bit/sec Frequency: 800MHzFrequency: 800MHz i-mode specifications

13. HTML Based Content Description Subset of HTML 3.0 with some additional tags* –No need to learn special language to deliver content Registration Day of Birth Year Month Day 1.SEND Registration Registration Day of Birth Year Month Day © Mainichi Shimbun * “Phone To” tag added

14. Portal Link Web access Intranet Intranet Packages Java Feb. 1999 Fall, 1999 Fall, 2000 Spring, 2001 i-mode launch i-mode Roadmap to 3G Success of i-mode will lead to smooth introduction of IMT-2000 which enables 64k- 384k bps high speed access from mobile devices. Even before 3G, we are making extensive efforts for enhancing i-mode platform by introducing Intranet package solutions in 1999 and, then, Java technology in 2000. ・ Homepage ・ e-mail ・ Video ・ Music ・ Mobile TV ・ Interactive TV ・ TV Telephone ・ TV Conference ・ Game ・ Security function Rich (Visual, High Speed) Colored LCD NOW ・ Groupware 3rd Generation

15. i-mode Evolution 2; Java Capable i-mode Phone Java will enable application/content providers to distribute software (applets) to cellular phones.application/content providers to distribute software (applets) to cellular phones. Users to download applets including interactive games, to manage servers, security enhancing module and so on.Users to download applets including interactive games, to manage servers, security enhancing module and so on. To be introduced in late 2000. i-mode phone with KVM(KJava) runs 3D maze game.

16. 3G to use W-CDMA Wideband CDMA will Enable up to 384Kbps speedEnable up to 384Kbps speed Provide richer content for i-mode; video, audio, etc.Provide richer content for i-mode; video, audio, etc. Further convergence to Internet standards

17. Conclusion Strategies Strategies Leverage widely accepted technology and advance the technology Leverage widely accepted technology and advance the technology Subset of HTML for content description Subset of HTML for content description Leverage IP based architecture Leverage IP based architecture Initial focus on personalized services and usage Initial focus on personalized services and usage Packet based charges with PDC-P favour for Web browsing applications Packet based charges with PDC-P favour for Web browsing applications 3G direction 3G direction Further convergence to IETF Internet standard Further convergence to IETF Internet standard Open discussions in IETF Open discussions in IETF

18. Thank you! Max HATA Multimedia Labs, NTT Mobile Communications Network, Inc (NTT DoCoMo) hata@mml.yrp.nttdocomo.co.jp Hiroshi INAMUA Multimedia Labs, NTT Mobile Communications Network, Inc (NTT DoCoMo) inamura@mml.yrp.nttdocomo.co.jp Contact-1 Ichiro OKAJIMA Wireless Labs, NTT Mobile Communications Network, Inc (NTT DoCoMo) okajima@mlab.yrp.nttdocomo.co.jp

19. Takeshi NATSUNO Media Director, Gateway Business Department NTT Mobile Communications Network, Inc (NTT DoCoMo) natsuno@nttdocomo.co.jp David MACDONALD Project Coordinator, Gateway Business Department NTT Mobile Communications Network, Inc (NTT DoCoMo) macdonald@nttdocomo.co.jp Contact-2