AW: Re: 3GPP - paging references
stefan.bauer at cubewerk.de
Fri Jan 13 13:01:25 UTC 2012
I just red that if early assignment is used (non-oascu) in a ms terminating call, there is no channel request on RACH by ms. I still dont quite get then howto match imsi/tmsi to an immediate assignment.
----- Ursprüngliche Nachricht -----
Von: Sylvain Munaut <246tnt at gmail.com>
Gesendet: Donnerstag, 12. Januar 2012 18:30
An: Stefan Bauer <stefan.bauer at cubewerk.de>
Cc: baseband-devel at lists.osmocom.org
Betreff: Re: 3GPP - paging references
> In detail how can i match the paging for my specific imsi/tmsi to the data-channel assignment?
You can't ... There is no relation between paging and the channel assignment.
When the phone sees he's being paged, he will initiate the channel
He sends a RACH at a given time fn with a random reference (8bits).
And then he looks for assignement matching his RACH (i.e. the time fn
and random reference are repeated back by the network in the
assignment so that a phone knows the channel was for it).
More information about the baseband-devel