Presentation on

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

i mode - Historyi-mode was launched in Japan on 22 February 1999. 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 launchedNov. 2001 i-motion service launchedJun. 2002 i-shot service launched Jan. 2003 i-motion mail service launchedSep. 2005 i-channel service launchedOct. 2006 keyword search service for i-mode launched

I-mode is a wireless internet service popular in Japan. Unlike WAP, i-mode encompasses a wider variety of internet standards, including web access, e-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.

What is i mode???

Architecture

PacketNetwork(PDC-P)

Communication

Network(PDC)

iModeServe

r

GroupwareServer

PSTN

Info.Provid

erHTTP/TCP/IP Leased Line

Internet

Info.Provid

erInfo.

Provider

PC

PC

HTTP/TCP/IP

i mode ServerThe 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 advancedsecurity requirements, it is possible to host the iMode server at the Enterprise.

• Functions:o Internet

AccessProxyo Mail Storageo User

Managemento Information

charging

(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.

.

Protocols• TLP

o Improved efficiency in PDC-P network over TCP (uses fewer packets to save charges)

o Higher data packet ratioo No 3-way handshake, control signals can piggyback data

• ALPo Supports both pull (HTTP) and push style communicationo 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 communicationo E.g. email delivery, push content notification

TelephonyFunction

HTMLALP (Application Layer

Protocol)TLP (Transport Layer Protocol)

PDC-PPDC

Mail ALP (Application Layer Protocol)

IP

TCP

iModeServer

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.

SecurityIssues1.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 i-mode center and special service providers such as banks.

i-mode Related Servicesi-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.

i mode Users

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, fun-oriented

• Anyone can produce content, DoCoMo operates content menus

Comparison b/w i mode and WAP

AdvantagesWireless internet service (could be deployed over WAP)

Sites based on HTML (cHTML)

60% of world’s wireless internet usersUsually used over packet switched connections

Services user-oriented, fun-orientedAnyone can produce content, DoCoMo operates content menus

DisadvantagesSmall display size

Spotty coverage (tunnels, near buildings)

Low bandwidth (wireless)

Conclusioni-mode phones are very good features,in future,using i-mode phones we can always connect internet

The packet data transmission techonology allows for constant connectively therefore users are not charged for how long they are online,since this time is unlimited

Thank You…

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