What is "3G" wireless technology? How does it relate to J2ME?
"3G" refers collectively to third generation cellular technologies. These technologies build upon the core knowledge and experience derived from the preceeding generations of wireless technologies, while extending the two major camps of 2G/2.5G wireless technologies, GSM (3G version known as UMTS in Europe, WCDMA most other places) and CDMA (3G version referred to as CDMA2000 and related notations), for much higher data rates in the future.
Because 3G networks use different transmission frequencies and require different infrastructure from 2G and 2.5G networks, operators and carriers are amassing significant expenses (in the billions of US dollars worldwide) building out their 3G infrastructure. 3G systems are available in limited deployments in Japan and Europe as of the time of this writing, with more deployments expected over the next several years worldwide. Most carriers' 3G networks will not be completely built out until at least 2003-2005.
GSM-based 3G technologies are being driven by the 3G Partnership
Project, or 3GPP, whereas just for fun, the group driving the
evolution of CDMA 3G technologies is known as the 3GPP2. Learn
more by visiting the 3GPP at:
and the 3GPP2 at:
There is additional information on the GSM Association's 3G page: