3G deployment
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Transcript 3G deployment
BSNL 3G Roll Out
Rajeev Bansal
DGM (GSM & 3G), ALTTC, Ghaziabad
3GPP Network Reference Model
UE
AN
CN
MSC-S
MSC
MSC
SIM
SIM
Um
MT
MT
BTS
MGW
MSC
MSC
Gb
RNC
Iu
Iur
Cu ME Uu
USIM
USIM
ME
BS
RNS
Iub
H
SMS-SC
AUC
AUC
F
Gf
SGSN
SGSN
Gd,
Gp,
Gn+
Gr
SMSSMSGMSC
GMSC
SMSSMSIWMSC
IWMSC
Gn+
ISDN
PSTN
PSPDN
CSPDN
PDN:
-Intranet
-Extranet
-Internet
GGSN
GGSN
RNC
SGSN
SGSN
UTRAN
D
HLR
HLR
EIR
EIR
BS
GMSC
GMSC
A
BSC
Iu
Cu ME Uu
USIM
USIM
ME
SCF
SCF
E,
G
BSS
Abis
RNS
Iub
External
Networks
Note:
Not all interfaces
are shown and named
Primary Sites Vs Secondary Sites
•Primary Site is the highest level site in the core network.
– Contains nodes, both controlling and switching nodes for CS and
PS respectively as well as BSC access nodes.
– MSC-S, M-MGw, SGSN, BSC nodes.
•Secondary Site are sites with local switching capability and RAN
access.
– M-MGw and BSC nodes.
Primary Sites Vs Secondary Sites
Monolithic vs Layered Architecture
Monolithic vs Layered Architecture
MSC
MSC-S
MGW
Migration from Monolithic to
Layered architecture
MSC
Server
MSC
(Monolithic)
GCP / SIGTRAN
MGW
Call Control
Bearer
Design Principle
Control Signaling between MSC-S and M-MGw is using SS7
over IP (SIGTRAN)
BSC is connected to one M-MGw only
Each monolithic MSC is connected to SGw over TDM
Signaling between Monolithic MSC and MSC-S will be via SGw.
Design Principle
BICC
MSC-S
SIGTRAN
MGW
TDM
MSC
Monolithic MSC
MSC-S
Transport Design
Design Criteria:
Up to 6 Node-Bs grouped into one cluster of a Sub-hub
Up to 4 Sub-Hub clusters grouped into 1 hub.
STM-1 from Hub/Sub-Hub to RNC through BSNL media
Interfaces:
End node-B: E1 interface.
Sub-Hub: E1 interface / STM-1 interface.
Hub: STM-1 interface.
Hub- Sub-HUB Architecture
Requirement from BSNL
3E1 for Each Node B sites.
STM-1 between RNC and Hub RBS site
STM-1 between Hub RBS and Sub Hub RBS sites as
STM-1 between RNC and Core network.
Pool of IPs for O&M Purposes and GTPU Links (RNC to SGSN)
– 16 IP per node-B
– 64 IPs per RNC
128 IPs for OSS
Separate IMSI series for USIM
STM from Every Circle to ViG
Video Gateway (ViG)
Video Gateway (ViG) interconnects WCDMA core network on
one side and an IP network on other. It supports, IP-based Video
Messaging systems and Multiparty Conferencing Systems
Proposed ViG offers following services:
– Mobile to Mobile Video Calls
– Mobile to IP client (PC) video calls.
– Circuit Switched Streaming
– Multi-party Video Conferencing
ViG: Basic Connectivity
• Used for Mobile to PC and PC to Mobile Video Calls
• Video Conferencing
Key Services being offered
• Mobile to Mobile Video Call
• Mobile Broadband (High Speed Data)
• Video Streaming (Clips/Movies etc.)
• Mobile TV (Live TV Channels)