location update problem

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Dieter Spaar spaar at mirider.augusta.de
Tue Jun 23 08:36:16 UTC 2009


Hello Andreas,

On Mon, 22 Jun 2009 19:40:17 +0200, "Andreas.Eversberg" <Andreas.Eversberg at 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 at mirider.augusta.de




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