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Schmied78
2010-11-12, 09:42 PM
Hi all,
when is the mobile doing registrations exactly?

-When the mobile is turned on.
-When the mobile is doing a Location area update (2G->3G, 3G RNC1 -> 3G RNC2)
-Periodic Location area update
-?

BR
Schmied

Schmied78
2010-11-12, 10:17 PM
What happens on sectors with two frequencies? Is the mobile doing rrc registrations on those as well in case it moves from fre1 to fre2 (layer1 to layer2)?

sala70vic
2010-11-13, 05:59 AM
Hi Schmied78,

Registration is differ than location area update.
During turning on the mobile, it will do registration in both domains CS & PS if PS service is allowed followed by LAC/RAC.

But During changing the LAC or RAC, it will do LAU or RAU irrespective camping in one freq or 2 freqss but this is not registration messages.

thanks.
regards,

Schmied78
2010-11-15, 05:50 PM
Hi sala70vic,

sorry, I have not been very precise.
In NSN we have a counter called RRC Registration attempts. This one counts LAC updates and entries.
I am not sure if a LAC update is necessary if the mobile changes from one frequency to the other.

BR
Schmied

sala70vic
2010-11-15, 10:50 PM
Hi Schmied,

Changing the radio layer under same LAC didn't trigger LAU, thanks.
regards,