AW: Re: 3GPP - paging references
stefan.bauer at cubewerk.de
Thu Jan 12 21:05:49 UTC 2012
Well thank you for your answer. I thought i could simply call my phone, the network would page it and i would have the imsi/tmsi. As i'm in a very busy cell, there are huge amounts of pagings. I have to rethink my first idea.
----- Ursprüngliche Nachricht -----
Von: Sylvain Munaut <246tnt at gmail.com>
Gesendet: Donnerstag, 12. Januar 2012 18:28
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).
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