GSM-R and GPRS
GSM-R and GPRS
GSM-R and GPRS
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<strong>GPRS</strong> QoS <strong>and</strong> PDP Contexts<br />
Background<br />
Packet<br />
BSS Packet<br />
BSS<br />
Core<br />
Core<br />
PFC#1 PFC#1<br />
PFC#2 PFC#2<br />
MS x MS x<br />
Streaming<br />
PDP Ctxt A<br />
PDP Ctxt B<br />
PDP Ctxt C<br />
TLLI<br />
PFI<br />
NSAPI<br />
QoS profile associated to each<br />
PDP context<br />
QoS profile is negotiated between<br />
the MS <strong>and</strong> the Network<br />
• At PDP context activation<br />
• When PDP context is already active<br />
• Change can be requested by<br />
network or MS<br />
Subscriber can have multiple<br />
concurrent PDP contexts<br />
• Primaries <strong>and</strong> secondaries<br />
Requires MS support<br />
Kapsch CarrierCom AG<br />
|<br />
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