View Full Version : Question Routing area update?
basith.aces
2009-06-08, 10:18 PM
Dear Members
Can anybody explain about ROUTING AREA UPDATE, when we'll gets this type of message in layer3 in tems
Thanks for your replies in advance
wolverine
2009-06-08, 10:32 PM
As an operator you define geographic areas (collection of cells) that share the same Routing Area Code (RAC).
This RAC is broadcasted in the System Information messages.
When the UE/MS detects it has entered a new Routing Area (RA) it will perform a Routing Area Update (RAU) to inform the network (the SGSN essentially) that this has occurred.
The reason for all of this is to limit the PS paging to a specific area in case the SGSN needs to contact the UE/MS.
RAU will also be performed after the routing area update timer has expired at periodic intervals (again set by the operator).
luonghp2003
2009-06-09, 12:37 AM
Dear Members
Can anybody explain about ROUTING AREA UPDATE, when we'll gets this type of message in layer3 in tems
Thanks for your replies in advance
------------------------
with my self.
in GSM, The Circuit Switch define a procedure" Location Update" an LAC
in GPRS/CDMA, The Packet Switch define a procedure "Routing Area Update" and RA
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