i-mode - PowerPoint PPT Presentation

i-mode. Revolutionary Wireless Internet Technology Marc Lisevich Bryan Kwan Jay Hoang. Overview.

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i-mode

Revolutionary Wireless Internet Technology

Marc Lisevich

Bryan Kwan

Jay Hoang

Overview
  • Introduction to i-mode
  • i-mode and mobile technology today
  • i-mode Development
  • iHTML
  • i-mode’s Business Model
  • Future of i-mode
What is i-mode?
  • Service across a wireless network which enables handheld devices (such as cell phones) to access the Internet
  • Mobile internet service offered by NTT DoCoMo
    • Introduced in February 1999
  • Extremely popular in Japan and expanding into Europe
    • As of March 31st, 2002, there are approximately 32,150,000 subscribers (in Japan)

Quick Note: Invented by Mari Matsunaga

What Can I do With i-mode ?
  • Web-browsing
  • Email (the “killer app”)
  • Chat, Games
  • Access to information
    • Transaction Content
      • Money Transfer, Balance Check, Ticket Reservation…
    • Information Content
      • News updates, sports news, stock quotes…
    • Database Content
      • Restaurant Guide, Telephone Directory…
A Look at an i-mode Device
  • Currently an i-mode device is an equivalent of a very low-end computer
  • Additional buttons : directional, select and the i button.
  • Must have an iHTML browser.
  • Menu based interface (i-Menu)
  • Try typing in a URL => It’s not easy!
i-mode Transmission System
  • Packet - switching network – information divided into packets when sent and reassembled when received by the i-mode user => faster.
    • i-mode users pay by volume of data downloaded.
  • Code Division Multiple Access – method for allocating wireless channel (9.6kbps)
i-mode vs WAP

Comparing WAP and imode is not straightforward!

  • i-mode – packet switching network
    • Handset contains IP stack
    • Communicates directly using iHTML web sites, through DoCoMo’s relay centers
  • WAP – protocol originally implemented on a circuit switched network
    • Can be packet switched e.g. GPRS
    • Requires gateway if required to communicate using TCP/IP
    • Can WAP support streaming video?
    • Both i-mode and WAP will be supporting XHTML
I-mode's security concerns/solutions
  • Concern: prank/redirected calls
  • Use SSL since version 3.0 since the medium is the internet and iHTML
  • Java is more secure and only delegates resources to "trusted" servers
  • Has partnered with major corporations including some Japanese and some in America and Europe
  • As of version 3.0, i-mode has 128-bit encryption
Development
  • The i-mode handset (Java enabled) use the KVM.
  • Sun has ported the J2ME to i-mode.
  • All Java Network operations in done via HTTP
  • Other companies are porting applications for development including Macromedia, WapProfit, SEGA...
  • It may even be possible to make your own movies that will be playable with 3G and 4G networks through FOMA
iHTML
  • Originally named cHTML (compact).
  • No jpegs, tables, image maps, frames, style sheets, cookies, fonts
  • Handles GIFs, MIDI, and Java (iAppli)
iHTML example

NTT DoCoMo

423-4567

DoCoMo Net

NTT DoCoMo

423-4567

Billing
  • Basic plan:
    • Packet plan – 200¥/month
    • i-mode plan – 100¥/month
    • Optional FOMA (3G) – 100¥/month
    • 400 packets free each month (doesn’t include voice)
    • 0.27¥ per packet
    • Typical day, 1) access main menu = 3¥. 2) what’s new = free 3) check the news = 28¥. 4) mobile banking = 100¥ 5) order food from restaurant = 40¥ 6) send and receive mail = 50¥
    • Add it all up, (221¥) x 30 days + 300¥ monthly charge = 6930¥ = $70 US.
    • Does not include talk time.
Future of i-mode
  • Currently, transfer rate is 9600 kbps.
  • 3G which is released next year, (new version of i-mode), transfer rate 2 Mbps with streaming video and audio
  • 4G (released in 2006), transfer rate is 20 MBps

Links

i-mode Interactive Demo
  • http://www.palowireless.com/imode
  • http://www.eurotechnology.com/imode
  • http://www.mobilemediajapan.com
  • http://www.imodelinks.com
  • http://www.nttdocomo.com/html/subscriber_growth.html
  • http://www.nttdocomo.com/html/imode01_4.html
  • http://www.wapprofit.com/products/emudownload.html

i-mode iHTML Emulator

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