3G Network
3G is the third generation of wireless technologies. It comes with enhancements over previous wireless technologies, like high-speed transmission, advanced multimedia access and global roaming. 3G is mostly used with mobile phones and handsets as a means to connect the phone to the Internet or other IP networks in order to make voice and video calls, to download and upload data and to surf the net.
3G : Operators and Circles In India
Network architecture
AAA- Authenticating .authorization and accounting
BSS — Base Station System
BTS — Base Transceiver Station
BSC — Base Station Controller
RNS — Radio Network System
RNC — Radio Network Controller
CN — Core Network
MSC — Mobile-service Switching Controller
MS –Mobile station
VLR — Visitor Location Register
HLR — Home Location Register
AuC — Authentication Server
GMSC — Gateway MSC
SGSN — Serving GPRS Support Node
GGSN — Gateway GPRS Support Node
SMS-SC – Short Message
UMTS -Universal mobile telephonic service
AMR –Adaptive mutilate
SMV –Selectable mode vcoder
GPRS -General packet radio service
EDGE –Enhanced Data rates for Global evolution
3GPP – 3rd Generation Partnership0 project
PDSN- Packet Data Service Node
PSTN –public switched telephonic network
STM –Synchronous transfer Mode
PPP-Point to Point protocol
SIP –Session initiation protocol
Typical NW architecture.
