Thomas Kunz
Systems and Computer Engineering
31
Operation Subsystem
nThe OSS (Operation Subsystem) enables centralized operation, management, and maintenance of all GSM subsystems
nComponents
–Authentication
Center (AUC)
ngenerates user specific authentication parameters on
request of a VLR
nauthentication parameters used for authentication of
mobile terminals and
encryption of user data on the air interface within the GSM system
–Equipment
Identity Register (EIR)
nregisters GSM mobile stations and user rights
nstolen or malfunctioning mobile stations can be locked
and sometimes even
localized
–Operation
and Maintenance Center (OMC)
ndifferent control capabilities for the radio subsystem
and the network subsystem