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DoCoMo and the i-Mode Ecosystem

Overview report of DoCoMo, the world's most admired mobile operator, and i-Mode, the pioneering mobile internet system with 48.5 Million paying subscribers which started in Japan in February 1999.
Version 25 of June 1, 2009
approx. 187 pages, including approx. 48 Figures and 140 Photographs and 10 tables, pdf-format, 7 Mbyte
[BUY Single copy license : US$ 475]
[BUY Corporate license: US$ 2375]
Any questions? Contact us because we need your feedback!

13. LTE and Fourth Generation (4G) and i-mode:

13.1. What is the technology roadmap for i-Mode:

Currently DoCoMo uses wCDMA-HSDPA technology for the radio transmission network. This technology offers download transmission speads currently of around 3.6Mbps.

HSDPA can be upgraded to download speeds of around 10Mbps.

Currently some networks in Japan (e.g. eMobile) use data speeds up to 7.2Mbps.

From around 2010, DoCoMo is planning to upgrade the networks to "Super-3G", which internationally is often called LTE ("Long-Term Evolution") or also sometimes 3.9G.

The next network upgrades beyond will be 4G, which will be introduced in Japan around 2015, althought this timescale can change.

13.2. How will services change with these much higher data speeds:

It is very difficult to predict which be accepted by customers and commercially successful. 4G data speeds will enable high-quality streaming movies to laptop computers, 3G graphics and similar high data volume applications.