1st November 2010 at 15:58
#64864
paraHO
Guest
GSM Networks: Protocols, Terminology,
and Implementation
12.1 Location Update
12.1.1 Location Update in the BSS
An MS performs LU on several occasions: every time it changes the location area, periodically, when a periodic location update is active, or with IMSI attach/ detach switched on at the time when it is subsequently turned on again.