Mobile Station Behavior Dependent on MS-Class and Network Operation Mode (GPRS):

In GPRS, the bevavior of the mobile station depends on the network operation mode plus the type of mobile station. For instance, the network operation mode together with the MS-class decides on which common control channel(s) a mobile station has to listen for circuit-switched and packet-switched pagings. The table underneath summarizes these dependencies and provides a relationship between the MS-class and the network operation mode. To obtain more details move your mouse over the blue-shaded cells.

 

  MS-Class A MS-Class B MS-Class C
Operation Mode Scenario NOM I NOM II NOM III NOM I NOM II NOM III NOM I NOM II NOM III
RR Idle /
Packet Idle Mode
Cell Update Y Y Y Y Y Y Y Y Y
Location Area Update N Y Y N Y Y Y Y Y
Routing Area Update N Y Y N Y Y Y Y Y
Periodic Location Area Update N Y Y N Y Y Y Y Y
Periodic Routing Area Update Y Y Y Y Y Y Y Y Y
Combined Routing/Location Area Update Y N N Y N N N N N
IMSI Attach N Y Y N Y Y Y Y Y
GPRS Attach N Y Y N Y Y Y Y Y
Combined IMSI/GPRS Attach Y N N Y N N N N N
Paging Packet-Switched SGSN SGSN SGSN SGSN SGSN SGSN   SGSN SGSN SGSN
Paging Circuit-Switched SGSN VLR VLR SGSN VLR VLR VLR VLR VLR
RR Active / Packet Idle Mode

or

RR Idle / Packet Transfer Mode

Paging
Packet-Switched
(RR Active Mode)
SGSN SGSN SGSN SGSN SGSN SGSN N/A N/A N/A
Paging
Circuit-Switched
(Packet Transfer Mode)
SGSN VLR VLR SGSN VLR VLR  N/A N/A N/A

[2GTS 03.60]