Yes, you are confused ;-)
To simplify hugely, W-CDMA is a radio link technology whereas UMTS is a
system, which includes a radio link but also a lot of other things as
well (billing, roaming, authentication etc) required to make an actual
commercial service work. Everyone in Europe and Japan building UMTS
networks is using W-CDMA as the radio link. However, NTT DoCoMo is
using earlier revisions of the standards to everyone else.
+44 7880 786 727
On 1 Sep, 2004, at 8:19 am, Heather Fraser wrote:
> Hello everybody.
> This is my first post here so please excuse my ignorance. I'm confused
> as to the difference between UMTS which we seem to be moving towards
> in Europe, and W-CDMA which is behind Japan's DoCoMo 3G service.
> Sometimes I see UMTS and W-CDMA used almost interchangeably to refer
> to 3G services in Europe. Are they one and the same? If not, what is
> the difference?
[ excessive quoting removed by moderator ]
Received on Wed Sep 1 21:19:52 2004