Okinawa Cellular Telephone Company
October 18, 2010
KDDI Corporation and Okinawa Cellular Telephone Company became first companies to adopt "EV-DO Rev.A" as the data communication infrastructure for au mobile phones in December, 2006. The two companies today announced to introduce "WIN HIGH SPEED," the expanded system that allows 9.2 Mbps downlink and 5.5 Mbps uplink speed at maximum, simultaneously with models compatible with the technology.
"EV-DO Multi-Carrier" technology realizes high-speed data communication by bundling two or three "EV-DO Rev.A" carriers (carrier waves) . Efficient usage of data communication becomes possible by having one mobile phone use multiple carriers. Compared to the current "EV-DO Rev.A," where one mobile phone uses one carrier, the speed triples at maximum  .