23 Jun
2009
23 Jun
'09
8:12 a.m.
hi,
how can i advice the phone to use the "full" power level according to the power
class of the bs11? what parameter and what value is required?
currently we have "kieler woche", an event with up to 3.000.000 visitors over
one week.
for the "mobile base station" i use a standard PC with E1/S0 card, a BS11, a
laptop, an ISDN phone, and an UPS with 4 * 200Ah batteries.
andreas
-----Ursprüngliche Nachricht-----
Von: Dieter Spaar [mailto:spaar@mirider.augusta.de]
Gesendet: Dienstag, 23. Juni 2009 10:36
An: Andreas.Eversberg
Cc: openbsc(a)lists.gnumonks.org
Betreff: Re: location update problem
Hello Andreas,
On Mon, 22 Jun 2009 19:40:17 +0200, "Andreas.Eversberg"
<Andreas.Eversberg(a)versatel.de> wrote:
after location update fails. "DB: Failed to find the Subscriber...", get
an "ERROR INDICATION" with cause 1. it seems that the mobile just stops
sending on the channel. the channel ressource hold by location update
process is not freed. the last messages show that.
i will look on this the next days and report if i found something. if
you have any idea, please tell me. the way to test any change/fix is
quite complicated. the bug only occurrs when many phones are available
and when they move from a different network to my network (built in a
car, moving arround.)
Just a wild guess: Could it be a reception problem ? If you have set
the BS-11 to a high power level, many phones will see it. Currently the
BS-11 advises the phones to use a very low power level when activating
a channel. So the BS-11 might receive the phone with a low signal
strength and the receiption is just too bad (although the phones will
receive the BS-11 quite well). The measurement reports should indicate
if this is the problem.
Out of interest, do you also have a PC with an E1 card in the car or
do you use a laptop with an USB (or PCMIA) to E1 interface ?
Best regards,
Dieter
--
Dieter Spaar, Germany spaar(a)mirider.augusta.de