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| author | Harald Welte <laforge@gnumonks.org> | 2015-10-25 21:00:20 +0100 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2015-10-25 21:00:20 +0100 |
| commit | fca59bea770346cf1c1f9b0e00cb48a61b44a8f3 (patch) | |
| tree | a2011270df48d3501892ac1a56015c8be57e8a7d /2009/foss-mobile_world-seville2009/html/mgp00056.txt | |
import of old now defunct presentation slides svn repo
Diffstat (limited to '2009/foss-mobile_world-seville2009/html/mgp00056.txt')
| -rw-r--r-- | 2009/foss-mobile_world-seville2009/html/mgp00056.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/2009/foss-mobile_world-seville2009/html/mgp00056.txt b/2009/foss-mobile_world-seville2009/html/mgp00056.txt new file mode 100644 index 0000000..8cf9406 --- /dev/null +++ b/2009/foss-mobile_world-seville2009/html/mgp00056.txt @@ -0,0 +1,13 @@ +FOSS in the Mobile World +GSM Network Architecture + +GSM is a bit-synchronous network +it draws many analogies from ISDN and SDN +layer 2 modelled after Q.921 / LAPD +call signalling modelled Q.931 +but: many more protocols for mobility management, radio resources, ... +like all traditional Telco protocols: Intelligence in the network, not in the end nodes. + +GSM is a TDMA "nightmare" +e.g. you never know from/for whom data is without the timing context + |