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GSM Mobile Services - Coggle Diagram
GSM Mobile Services
Services
Data Services or Bearer Services
Transparent
Non-transparent
Supplementary Services
Call redirection
Conference call
Closed user group
Telephony Services
Mobile Telephony
Emergency number
Multi numbering
SMS
GSM security services
A3 Authentication
A5 stream cipher encryption
A8 cipher key generation
GSM Architecture
OSS(Operational sub system)
EIR
AUC
OMC
RSS(Radio Sub System)
UM
MS
BSS
BSC
NSS(Network Switching sub system)
MSC
HLR
VLR
GMSC
ISDN
PSDN
UMTS(Universal Mobile Telecommunication System)
UE(User Equipment)
ME(Mobile Equipment)
USIM
CN(Core Network)
CS Domain
PS Domain
UTRAN(UTRA network)
RNS
Node B
RNC
IUB interface
GPRS
Services
Point to point
Point to multi point
SMS service
Future enhancements
Features
Always Online
Upgrade to existing systems
Integral part of future 3G plans
Architecture
GSN
GGSN
SGSN
PDN
Localization and Calling
localization
TMSI
MSISDN
IMSI
MSRN
Calling
MOC(Mobile originated Call)
MTC(Mobile Terminated Call)
Handovers
Definition
Types of handovers
Intra-cell
Inter-cell, intra BSC
inter BSC, intra MSC
inter MSC