Airvana completed a multi-carrier CDMA2000 1xEV-DO Revision B cal...
Airvana completed a multi-carrier CDMA2000 1xEV-DO Revision B call in its laboratory, and the company will begin operator trials in Q3 2007, it said last week. Rev. B supports higher per-user throughput than Rev. A by multiplexing traffic across…
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multiple carriers, reducing data latency. Operators who upgrade systems to Rev. B software can launch services with speeds up to 9.3 Mbps on the forward link and 5.4 Mbps on the reverse using three 1.25 MHz-wide carriers, Airvana said. In the future, Rev. B could support up to 14.9 Mbps on the same three carriers, and 73.5 Mbps by aggregating fifteen 1.25 MHz carriers within 20 MHz bandwidth, it said. Rev. B is backward compatible with existing Rev. 0 and Rev. A devices, it said. And upgrade to Rev. B could result in speed boosts for Rev. 0 and Rev. A users by reducing the load on the radio network, it said. The technology is also expected to allow operators to increase their number of Rev. A VoIP and push-to-talk customers, it said. An Airvana spokesman said several major carriers are interested in the technology and will participate in the Q3 tests, but declined to reveal names. Alltel, Sprint Nextel and Verizon Wireless are the largest CDMA carriers that could be interested in Rev. B technology. A Verizon spokesman declined to comment on whether the carrier would participate in Airvana’s tests, but said it’s looking at “a host of different 4G possibilities” and has not yet made a commitment to a specific technology. Sprint and Alltel didn’t comment.