Rajeev Bansal DGM (GSM & 3G), ALTTC, Ghaziabad BSNL 3G Roll Out Rajeev Bansal DGM (GSM & 3G), ALTTC, Ghaziabad

3GPP Network Reference Model Iu AN UE BSC BTS Um SIM MT Abis A BSS RNS UTRAN Note: Not all interfaces are shown and named F Gf Gr Gn + H Iu AN UE BSC BTS Um SIM MT Abis A BSS CN CN External External Networks Networks MSC-S MSC SCF SCF MSC MSC SCF SCF E, E, G G GMSC GMSC GMSC GMSC MSC MGW MSC MSC D D SMS SMS - - SC SC H HLR HLR AUC AUC HLR HLR AUC AUC ISDN ISDN F PSTN PSTN SMS SMS - - PSPDN PSPDN SMS SMS - - EIR EIR EIR EIR GMSC GMSC CSPDN CSPDN Gr GMSC GMSC PDN: PDN: RNS Gb Gb SMS SMS - - - - Intranet Intranet USIM USIM Cu Cu ME ME Uu Uu Iub Iub Gf SMS SMS - - USIM USIM ME ME BS BS IWMSC IWMSC - - Extranet Extranet RNC RNC IWMSC IWMSC - - Internet Internet Iu Iu SGSN SGSN SGSN SGSN Gn + GGSN GGSN Iur Iur GGSN GGSN Gd Gd , , RNS Gp Gp , , Cu Cu Uu Uu Iub Iub Gn Gn + + USIM USIM ME ME USIM USIM ME ME BS BS RNC RNC SGSN SGSN SGSN SGSN Note: Not all interfaces UTRAN 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 MSC-S SIGTRAN MGW TDM MSC Monolithic MSC

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)

Thank You !!!