On Feb.
1992 in
Malaga ITU-R World
Radio Conference identifies
IMT2000 frequency bands...
On Jan.
1998 in
Paris ETSI selects
W-CDMA for
paired (
FDD) and
TD-CDMA for
unpaired (
TDD) UMTS-operation...
On Apr.
1999 in
Toronto OHG recognises both UMTS FDD and TDD as two of the three
harmonized modes of a
global third generation mobile radio standard...
On Dec. 1999 in
Nice 3GPP approves UMTS Release '99
specifications both for FDD and TDD...
Then what is UMTS? It stands for Universal Mobile Telecommunications System and is so called 3rd generation mobile system which comes to expand existing mobile communication with much more greater data rate which in theory is even 2 MB/s. This gives possibility to transfer video streams and voice at same time and thus makes even mobile-voice-phone's to be true.
On Internet:
UMTS Forum:www.umts-forum.org
3GPP:www.3gpp.org
GSM MoU:www.gsmworld.com
ITU-T:www.itu.int
WAP forum:www.wapforum.org
ETSI:www.etsi.org