I-Mode TECHNOLOGY

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I-mode is a mobile internet (as opposed to wireless internet) service popular in Japan. Unlike Wireless Application Protocol or WAP, i-mode encompasses a wider variety of internet standards, including web access-mail and the packet-switched network that delivers the data. I-mode users have access to various services such as e-mail, sports results, weather forecast, games, financial services and ticket booking. Content is provided by specialized services, typically from the mobile carrier, which allows them to have tighter control over billing. Like WAP, i-mode delivers only those services that are specifically converted for the service, or are converted through gateways. This has placed both systems at a disadvantage against handsets that use "real" browser software, and generally use a flat pricing structure for data. Even I-mode's creator, Takeshi Natsuno, has stated "I believe the Linksys iPhone (a phone that uses the traditional TCP/IP model) is closer to the mobile phone of the future, compared with the latest Japanese mobile phones."

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I-Mode TECHNOLOGY

  1. 1. Presentation on Presented By Arun P Raju
  2. 2. contents • • • • • • • • • • • History of i mode What is i mode? Architecture How i mode works? i mode Security Business Model i mode Services i mode Users Comparison with WAP Advantages of i mode Conclusion
  3. 3. i mode - History i-mode was launched in Japan on 22 February1999 by NTT DoCoMo. The content planning and service design team was led by Mari Matsunaga, while Takeshi Natsuno was responsible for the business development. Further Developments: Dec. 1999 i-mode compatible handsets with color screens were marketed Jan. 2001 i-appli service launched Jul. 2001 i-area service launched Nov. 2001 i-motion service launched Jun. 2002 i-shot service launched Jan. 2003 i-motion mail service launched Sep. 2005 i-channel service launched Oct. 2006 keyword search service for i-mode launched
  4. 4. Mari Matsunaga Takeshi Natsuno
  5. 5. What is i mode??? I-mode is a wireless internet service popular in Japan. Unlike WAP, i-mode encompasses a wider variety of internet standards, including web access, email and the packet-switched network that delivers the data. i-mode users have access to various services such as e-mail, sports results, weather forecast, games, financial services and ticket booking. Content is provided by specialized services, typically from the mobile carrier, which allows them to have tighter control over billing.
  6. 6. Architecture HTTP/TCP/IP Leased Line Packet iMode Network Server (PDC-P) HTTP/TCP/IP Communication Network (PDC) PSTN Internet Info. Provid er Info. Provid er Info. Provid er PC Groupware Server PC
  7. 7. i mode Server The i-mode server is a regular Web server. It can reside at NTT DoCoMo or at the Enterprise. DoCoMo has been acting as a portal and so “normally” maintains the iMode server. For future implementations with advanced security requirements, it is possible to host the iMode server at the Enterprise. • Functions: Internet AccessProxy o Mail Storage o User Management o Information charging o
  8. 8. (Packet PDC-P) Personal Digital Cellular- Packet i-mode provides Internet service using Personal Digital Cellular-Packet (PDC-P) and a subset of HTML 3.0 for content description. i-mode allows application/content providers to distribute software (Java applets) to cellular phones and also allows users to download applets (e.g., games) the communication and is carried over TCP/IP for the wired part of the communication. .
  9. 9. • • • • Protocols TLP (Transport Layer Protocol) o Improved efficiency in PDC-P network over TCP (uses fewer packets to save charges) o Higher data packet ratio ALP (Application Layer Protocol ) o Supports both pull (HTTP) and push style communication o Direct HTTP communication between mobile phone and i-mode server UITP (User Information Transfer Protocol) sends subscriber information from PDC-P network to iMode server NWMP (Network Management Protocol) performs signaling o Start/end of packet communication o E.g. email delivery, push content notification Telephony Function HTML Mail ALP (Application Layer Protocol) TLP (Transport Layer Protocol) PDC PDC-P iMode Server ALP (Application Layer Protocol) TCP IP
  10. 10. How does i-Mode work? •The i-Mode service uses an additional packet communication network that is built onto DoCoMo's main network. •This packet data transmission technology allows for constant connectivity.Thus, users are not charged for how long they are online, since this time is unlimited. There are essentially 4 main components that are required for the i-Mode service. 1)A cellular phone capable of voice and packet communication and with a browser installed. 2)A packet network. 3)An i-mode server. 4) information providers.
  11. 11. Security Issues 1.Security of the radio link between i-mode handset and the cellular base station. 2. Password security 3. Security of private networks on i-mode. 4. Security of private network links between the imode center and special service providers such as banks.
  12. 12. i-mode Related Services i-appli: i-mode with Java This service group consists of software (programs) used with i-mode compatible mobile phone terminals. Downloading the software makes it possible automatically update the news and weather forecast displays as well as to play new games. i-area: Location Based Service This is DOCOMO's location information service. The i-area service enables the user to check the weather forecast, traffic and store information and other convenient information for local areas as well as the map information to the user's current location.
  13. 13. i mode Users
  14. 14. i-mode was launched in the following countries: Australia Belgium Bulgaria France Germany Greece Hong Kong Israel Ireland Italy Netherlands Russia Romania Singapore Spain Taiwan UK
  15. 15. Comparison b/w i mode and WAP WAP • Specification for presenting and interacting with information on wireless • Sites based on new WML • 39% of world’s wireless internet users • Usually used over circuit switched connections • Services business-oriented, work-oriented • Anyone can produce content, content menus iMode • Wireless internet service (could be deployed over WAP) • Sites based on HTML (cHTML) • 60% of world’s wireless internet users • Usually used over packet switched connections • Services user-oriented, funoriented • Anyone can produce content, DoCoMo operates content menus
  16. 16. I-mode Mobile Phones
  17. 17. 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!
  18. 18. SIZE: Using an i-mode phone, you can send and receive e-mail message with up to 250(doublebyte) Japanese characters or 500 Latin characters in the body of your messages, including spaces (total allowed size: 500 bytes). SPEED: i-mode phones transmit data at a speed of 9.6kbps SITES: The most popular i-mode sites are by far entertainment-related sites where you can download character images and ringing tones, play games, read your horoscope. Other popular services include weather information and news-related sites. COST: Your bill will depend on how much you use i-mode on your phone.There is a basic fee of 300 yen per month to access i-mode service. When you actually use I-mode to surf websites and send or receive email, you are charged 0.3 yen per packet (128 bytes) of transferred data
  19. 19. Advantages Wireless internet service (could be deployed over WAP) Sites based on HTML (cHTML) 60% of world’s wireless internet users Usually used over packet switched connections Services user-oriented, fun-oriented Anyone can produce content, DoCoMo operates content menus Disadvantages Small display size Spotty coverage (tunnels, near buildings) Low bandwidth (wireless)
  20. 20. Conclusion i-mode phones are very good features, in future, using i-mode phones we can always connect internet. The packet data transmission technology allows for constant connectively therefore users are not charged for how long they are online, since this time is unlimited.
  21. 21. Questions 1.What is i-mode? 2.TLP stands for 3.Comparison b/w i-mode & wap? 4.What is the disadvantage of i-mode? 5.Functions of i-mode server

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