23 Jul
2009
23 Jul
'09
10:43 a.m.
Hello Harald,
On Wed, 22 Jul 2009 23:49:00 +0200, "Harald Welte" <laforge(a)gnumonks.org>
wrote:
Even with two BTS at two TRX (exercising all our four ARFCN), the total call
capacity is not more than 13 simultanesous MS-to-MS calls (since each call
requires two timeslots). Yes we could do half-rate, but we have no software
support for that so far.
You have the adjacent channels 121 to 124 for GSM 900 ? As far as I am
aware, adjacent channels will disturb each other. From what I know,
real networks usually have one free guard channel in between. So at
least the configuration of using adjacent channels should be checked
in advance (but you don't know how well different phones behave).
Best regards,
Dieter
--
Dieter Spaar, Germany spaar(a)mirider.augusta.de
23 Jul
23 Jul
9:40 a.m.
New subject: GSM license approval for HAR2009
On Thu, Jul 23, 2009 at 08:43:26AM +0200, Dieter Spaar wrote:
Hello Harald,
On Wed, 22 Jul 2009 23:49:00 +0200, "Harald Welte" <laforge(a)gnumonks.org>
wrote:
yes, we should check that in advance. Also, if we have two BTS at different
geographic locations, we might very well have 121 + 123 for one, and 122 + 124
for the other one.
For testing it is probably sufficient to use two adjacend channels on two TRX's
of one BTS.
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
Even with two BTS at two TRX (exercising all our four ARFCN), the total call
capacity is not more than 13 simultanesous MS-to-MS calls (since each call
requires two timeslots). Yes we could do half-rate, but we have no software
support for that so far.
You have the adjacent channels 121 to 124 for GSM 900 ? As far as I am
aware, adjacent channels will disturb each other. From what I know,
real networks usually have one free guard channel in between. So at
least the configuration of using adjacent channels should be checked
in advance (but you don't know how well different phones behave). 
11:43 a.m.
New subject: GSM license approval for HAR2009
Well congratulation,
Too bad for me the tickets are sold out. Cause this is a great
opportunity to meet you guys there and help you.
It would be nice if such an event could be posted in the list before, so
we can react quickly.
Anyway, I hope you'll have a lot of fun there :)
5812
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2 comments
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Dieter Spaar -
Harald Welte -
Nordin