Actually, EDGE does increase voice capacity somewhat. I can't remember
how, though :0
-----Original Message-----
From: keitai-l-bounce@appelsiini.net
[mailto:keitai-l-bounce@appelsiini.net] On Behalf Of Johan Montelius
Sent: 08 October 2003 09:20
To: keitai-l@appelsiini.net
Subject: (keitai-l) Re: Is KDDI 3G (10 milion users) winning over DoCoMo
Foma?
>Well, EDGE is currently considered - at least in Europe - the answer
>for operators facing capacity problems (e.g. TIM).
>The point is: if you want to increase GSM operators' capacity in the
>short term, I guess EDGE is less expensive and (much) more reliable
>than UMTS, right now.
EDGE increase the capacity for GPRS traffic by changing the radio
modulation. This does not change the number of voice connections that
you can provide. There are still eight time slots and each voice
connection uses one time slot (apart from half-rate codecs that only use
every second frame). Are there techniques in EDGE that use the higer
capacity to increase the quiality of half-rate vocie connections or even
introduce quarter-rate voice connections?
If EDGE only increase the capacity of GPRS traffic then the problem of
congested networks remains since most of the traffic is voice.
Johan
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Received on Wed Oct 8 11:33:35 2003