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GSM Mobile Services - Coggle Diagram
GSM Mobile Services
Types of Services
Teleservices or Telephony
Bearer or Data Services
Transparent
Non-transparent
Supplementary
GSM Architecture
RSS
MS
MT
TE
TA
SIM
BSS
BTS
BSC
Interfaces
Um (air)
NSS
Databases
HLR
Static info
MSISDN
IMSI
VLR
Dynamic info
MSRN
MSC
GMSC
OSS
OMC
AuC
EIR
Stores IMEIs
Handover
Intra-cell, intra BSC
Inter-Cell
Inter-cell, intra BSC
Inter MSC
Localization
MSISDN
IMSI
TMSI
MSRN
Calling
MTC
MOC
Security Algorithms
A3 (Authentication)
A5 (Encryption)
A8 (Generating cipher key)
GPRS Architecture
GSN
SGSN
GGSN
Interfaces
Gi
Gb
Gn
Um
Services
Point-to-Point
Point-to-Multipoint
SMS
Future enhancements
UMTS
UE
ME
USIM
CN
UTRAN
RNS
RNC
Node B