Whereabout the fourth generation mobile technology

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Paradigms:

- The seamless service among mobile, fixed line, WiFi and ISPs will drastically change the industry structure. The four separated industries integrated one market, resulting that the companies in the industries will face the new competitors, convergence, intense sharing the cotent providers and related M-commerce providers.

- Social life style will also change. The Mobile phone will have bigger monitor so that customers can watch the TV or play online games through the mobile phones. In Japan, the fixed fee structure for packet communication established already, therefore, the cost of mobile communication will be no longer a problem for customer. Communication between the people may also change, the video e-mails, shopping through the mobile phone, listening the music through mobile phone (substitute of MP3 player) and all contents or services provided currently through internet will turn to the mobile services.

Experts:

- NTT DoCoMo representative in Rotterdam

Timing:

2001: Standardized technologies related to 3.5 G (downward over 8Mbps in 5MHz bandwidth), such as HSDPA（ High Speed Downlink PacketAccess) and VoIP (Voice over IP) service

WP8F（Working Party 8F）of ITU（International Telecommunications Union）started discussion about the possible feature, standardized technology of the 4G

2005: The communication speed will become over 30Mbps

2010: Forth generation service starts with bandwidth 50-100Mbps

2015: Necessary to build 1.2 GHz-1.7 GHz frequency for accomodating the increased communication

Resources:

-Shuuji Urabe/ Yoshisuke Hasegawa/ Masao Miyazaki, "Mobile Communication System Evolution in Digital Mobile Radio", Sharp engineering report, Sharp corporation, December 2001

- NTT DoCoMo homepage (Investors Relations) http://www.nttdocomo.co.jp/english/corporate/investor_relations/top_e.html