Some words involved in the noun, the photos are very hard :-( But see these words every day, it is also ambiguous.
UMTS: Universal Mobile Telecommunication System Universal Mobile Communication System
UTRAN: UMTS TerRestrial Radio Access Network Wireless Access Network
PLMN: Public Land Mobile NetWork Public Land Mobile Network
UE: User Equipment user equipment, such as mobile phone
Node B: 3GPP technical specification word, that is, the usual base station
RNC: Radio Network Controller Wireless Network Controller
HLR: Home Location Register home location register
VLR: Visitor Location Register Access location Register
MSC: Mobile Services Switching Center Mobile Traffic Center
GMSC: Gateway MSC Gateway Mobile Traffic Switching Center
GPRS: Gerneral Packet Radio Service Universal Packet Wireless Service
SGSN: Serving GPRS Support Node Services GPRS Support Node
GGSN: GATEWAY GPRS Support Node GPRS Support Node
CS: Circuit Switch Circuit Exchange
PS: Packet Switch Switch
I am now responsible for the NE, including the NE mentioned above: HLR, MSC / VLR, GMSC, SGSN, GGSN, these things include open interfaces between each NE, must be familiar, but also learn Some of the UTRAN, because the core network (CN, Core Network) is required to connect with the UTRAN, such as RNC, for example, with the CN.
