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GSM Mobile Services - Coggle Diagram
GSM Mobile Services
System Architecture
RSS (Radio Sub System)
MS (Mobile Station)
BSS (Base Station Subsystem)
BTS (Base Tranceiver Station)
BSC (Base Station controller)
NSS(Network Switching Subsystem)
MSC (Mobile Switching Centre)
HLR(Home Location Register)
VLR (Visitor Location Register)
OSS (Operational Sub System)
OMC (Operation and Mantainance Centre)
EIR (Equipment Identity Register)
AuC (Authentication Centre)
Services
Teleservice
Bearerservice
Supplementary service
Localication and Calling
Localization
TMSI
MSISDN
IMSI
MSRN
Calling
MTC
MOC
Security and Algorithm
Security
Authentication
Confidentiality
Anonymity
Algorithm
A3 for Authentication
A5 for Encryption
A8 for Generation of Cipher Key