3GPP
3rd Generation Partnership Project
European Telecommunications Standards Institute
ETSI
Association of Radio Industries and Businesses
ARIB
China Communications Standards Association
Telecommunications Technology Association of Korea
Alliance for Telecommunications Industry Solutions
Universal Mobile Telecommunication System
UMTS
IMT-2000
International Telecommunication Union
ITU
WCDMA
CDMA2000
TD-SCDMA
Wideband CDMA
Radio Network Controller
RNC
Base Station Controller
BSC
Radio Network Subsystem
RNS
Base station
NB
Node B
UTRAN
UMTS Terrestrial Radio Access Network
Core Network
CN
Mobile Switching Center
MSC
Gateway MSC
GMSC
Serving GPRS Support Node
SGSN
Gateway GPRS Support Node
GGSN
User Equipment
UE
Uu
IuB
IuR
Iu
Iu-CS
Circuit Switch
Iu-PS
Packet Switch
High Speed Downlink Packet Access
HSDPA
Downlink
Spreading Factor
SF
16 Quadrature Amplitude Modulation
16QAM
QPSK
High Speed Uplink Packet Access
HSUPA
Uplink
High Speed Packet Access Plus
HSPA+
Multi Input Multi Output
MIMO
Tx
Transmitter
Rx
Receiver