14 DAY TRIAL // KDDI and Okinawa Cellular announced an expansion of the CDMA2000 1x EV-DO system, with an 'EV-DO Rev. A' data infrastructure to roll out from December 2006, with BCMCS (Broadcast and Multicast Services) to start from September.
The new EV-DO Rev. A network increases upload speed - 144 kbps to max 1.8 Mbps - as compared to the earlier EV-DO Rev. 0. It also enables delay control, and it's suited for bi-directional real-time IP communications. KDDI is moving towards "All IP" for transmitting data and voice via IP in "Ultra 3G" format, and plans to systematically deploy EV-DO Rev. A as the next mobile network base infrastructure beginning in December 2006.
The first service to use this technology will be the TV phone service employing VoIP. KDDI also plans to expand communications services in the future for VoIP voice calls, blogs, e-mail, and other functions.
BCMCS is a function for simultaneously broadcasting and multicasting content. Although conventional communications presently transmit identical content for individual users over different wireless channels, BCMCS dramatically increases efficiency of frequency usage and enables the previously impossible transmission of mass content, together with real-time improvements to allow simultaneous content transmission for many users over the same channel.
KDDI is introducing BCMCS functionality to expand its news and image content services. The service, available from September 2006, will roll out on presently existing EV-DO Rev. 0 facilities.