22 Feb
2011
22 Feb
'11
4:08 p.m.
Hello guys,
I haven't been busy with openbsc for a while, however, I was following
the mailing-list.
I have the following question, is timing advance also implemented for
the nanoBTS? Cause I don't really know where to look in the sources,
thank you.
23 Feb
23 Feb
7:24 p.m.
On Tue, Feb 22, 2011 at 04:08:56PM +0100, Nordin wrote:
I haven't been busy with openbsc for a while,
however, I was
following the mailing-list.
I have the following question, is timing advance also implemented
for the nanoBTS? Cause I don't really know where to look in the
sources, thank you.
Timing advance handling is in RSL and thus independent of the BTS you use.
OpenBSC does it for all the BTS it supports.
However, I am not sure the ip.access nanoBTS hardware/firmware actually
implements it on the radio layer, considering it is intended as a
pico/microcell.
--
- 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)
9:36 p.m.
Timing advance handling is in RSL and thus independent of the BTS you use.
OpenBSC does it for all the BTS it supports.
However, I am not sure the ip.access nanoBTS hardware/firmware actually
implements it on the radio layer, considering it is
intended as a
pico/microcell.
Thank you for your answer Harald. It's clear to me.
--
- 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)
7:50 p.m.
Hi Guys,
The ip.access nanoBTS (at least model 139) do implement timing advance. We have used them
in a macro network coupled with 24 AMPS for nearly a year now and they work quite
effectively. They work right up to the 25 KM timing advance limit.
Kind Regards
Stuart Baggs
BlueWave Communications Ltd - Suppliers of IP pico/femto cells.
On 22 Feb 2011, at 15:08, Nordin wrote:
Hello guys,
I haven't been busy with openbsc for a while, however, I was following the
mailing-list.
I have the following question, is timing advance also implemented for the nanoBTS? Cause
I don't really know where to look in the sources, thank you.
9:41 p.m.
Ok cool, thnx Stuart.
Is this info based on technical specs of the 139 model?
On Wed, Feb 23, 2011 at 7:50 PM, Stuart Baggs <stuart(a)bluewave.im> wrote:
Hi Guys,
The ip.access nanoBTS (at least model 139) do implement timing advance. We
have used them in a macro network coupled with 24 AMPS for nearly a year now
and they work quite effectively. They work right up to the 25 KM timing
advance limit.
Kind Regards
Stuart Baggs
BlueWave Communications Ltd - Suppliers of IP pico/femto cells.
On 22 Feb 2011, at 15:08, Nordin wrote:
Hello guys,
I haven't been busy with openbsc for a while, however, I was following
the
mailing-list.
I have the following question, is timing advance
also implemented for the
nanoBTS? Cause I don't really know where to look in
the sources, thank you.
24 Feb
24 Feb
8:54 a.m.
Dears,,
In addition to the below question , first what do you mean by 24 AMPS ?, 2nd
Does ipaccess covers up to 25 KM or it needs amplifiers or one ipaccess
antenna can cover that distance can you explain?
Thanks,
Omar Atia
From: openbsc-bounces(a)lists.osmocom.org
[mailto:openbsc-bounces@lists.osmocom.org] On Behalf Of Maradona Mossiba
Sent: Wednesday, February 23, 2011 10:41 PM
To: Stuart Baggs
Cc: OpenBSC list; Nordin
Subject: Re: Timing Advance
Ok cool, thnx Stuart.
Is this info based on technical specs of the 139 model?
On Wed, Feb 23, 2011 at 7:50 PM, Stuart Baggs <stuart(a)bluewave.im> wrote:
Hi Guys,
The ip.access nanoBTS (at least model 139) do implement timing advance. We
have used them in a macro network coupled with 24 AMPS for nearly a year now
and they work quite effectively. They work right up to the 25 KM timing
advance limit.
Kind Regards
Stuart Baggs
BlueWave Communications Ltd - Suppliers of IP pico/femto cells.
On 22 Feb 2011, at 15:08, Nordin wrote:
Hello guys,
I haven't been busy with openbsc for a while, however, I was following the
mailing-list.
I have the following question, is timing advance also
implemented for the
nanoBTS? Cause I don't really know where to look in the
sources, thank you.
9:37 a.m.
On 24-2-2011 8:54, Omar Atia wrote:
Dears,,
In addition to the below question , first what do you mean by 24 AMPS ?, 2nd
Does ipaccess covers up to 25 KM or it needs amplifiers or one ipaccess
antenna can cover that distance can you explain?
For such a distance you need special amplifiers and antennas. It works
as Stuart said, he told that from his experience.
Thanks,
Omar Atia
From: openbsc-bounces(a)lists.osmocom.org
[mailto:openbsc-bounces@lists.osmocom.org] On Behalf Of Maradona Mossiba
Sent: Wednesday, February 23, 2011 10:41 PM
To: Stuart Baggs
Cc: OpenBSC list; Nordin
Subject: Re: Timing Advance
Ok cool, thnx Stuart.
Is this info based on technical specs of the 139 model?
On Wed, Feb 23, 2011 at 7:50 PM, Stuart Baggs<stuart(a)bluewave.im> wrote:
Hi Guys,
The ip.access nanoBTS (at least model 139) do implement timing advance. We
have used them in a macro network coupled with 24 AMPS for nearly a year now
and they work quite effectively. They work right up to the 25 KM timing
advance limit.
Kind Regards
Stuart Baggs
BlueWave Communications Ltd - Suppliers of IP pico/femto cells.
On 22 Feb 2011, at 15:08, Nordin wrote:
Hello guys,
I haven't been busy with openbsc for a while, however, I was following the
mailing-list.
I have the following question, is timing advance
also implemented for the
nanoBTS? Cause I don't really know where to look in
the sources, thank you.
10:39 a.m.
On 24 February 2011 08:37, Nordin <bouchtaoui(a)gmail.com> wrote:
On 24-2-2011 8:54, Omar Atia wrote:
Surely not 24 amplifiers off one BTS though.
I would have thought the noise floor would have gone through the roof and
ruined performance.
Rough, finger in the air guessing, I would say more than a few amps per
cell/sector would be enough.
Paul
In addition to the below question , first what do
you mean by 24 AMPS ?,
2nd
Does ipaccess covers up to 25 KM or it needs amplifiers or one ipaccess
antenna can cover that distance can you explain?
For such a distance you need special amplifiers and antennas. It works as
Stuart said, he told that from his experience.
4821
days inactive
4823
days old
7 comments
6 participants
participants (6)
-
Harald Welte -
Maradona Mossiba -
Nordin -
Omar Atia -
Paul Dart -
Stuart Baggs