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Member
Reputation: 125
Routing area update?
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
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2009-06-08 10:18 PM
# ADS
Circuit advertisement
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VIP Member
Reputation: 1851
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).
Last edited by wolverine; 2009-06-08 at 10:41 PM
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Member
Reputation: 92
Originally Posted by
basith.aces
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
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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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