GSM structure
image/svg+xml
GSM structure
2012-08-14
Kevin Redon
structure of a GSM network, based on 3GPP TS 23.002 version 9.2.0 Release 9
icons from gnome
https://secure.wikimedia.org/wikipedia/commons/wiki/File:Gsm_structures.svg, https://commons.wikimedia.org/w/index.php?title=File:UMTS_structures.svg
Structure of a GSM network
CN: Core Network
MS: Mobile Station
UE: UserEquipment
ME: MobileEquipment
ICC
GERAN: GSM EDGE RadioAccess Network BSS: Base Station System
GPRS PS:Packet Switched
PS & CS
CS: CircuitSwitched
AN: Access Network
MSC: MobileSwitching Centre
HSS
Um
SIM-ME
Abis
Gb
PSTN
A
Nb
Mc
Nc
E
B
C
H
D
G
F
Gf,Sv
Gd
Gn
Gc
Gp
Gi
PSTN
Internet
1
2
3
4
5
6
7
8
9
#
0
*
BTS: BaseTransceiverStation
BSC:Base StationController
CS-MGW
SGSN
MT/TE
SIM
GGSN
VLR
EIR
MSC server
1
2
3
4
5
6
7
8
9
#
0
*
HLR
AuC
SMS-GMSC
1
2
3
4
5
6
7
8
9
#
0
*
1
2
3
4
5
6
7
8
9
#
0
*
GMSC