3G architecture and protocols

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3Garchitecture and protocols
A Seminar on
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Outline

• Concept of mobile communication
• Network Architecture
• Procedures in UMTS
• IP Initiative

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Concept of Mobile Communication

• Mobile communication is the communication between
  mobile bodies or that between mobile body and
  fixed body.

Features

• Mobility
• Radio propagation

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Evolution of Mobile Communications

• 3G
• (IMT-2000)

1G
2G
WCDMA
AMPS
Speech
Data
Speech
CDMA2000
TACS
NMT
UWC 136
Others
DECT
Digital
Wideband Multimedia
Analog
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WHY 3G ?
?

• HIGHER TRANSFER RATE
• PACKET-SWITCHED NETWORK
• GLOABALISED ROAMING
• REAL TIME APPLICATIONS
• VIDEO ON DEMAND

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ARCHITECTURE
ACESS NETWORK
USER EQUIPMENT
CORE NETWORK
Uu Interface
Iu Interface
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User Equipment
Mobile equipment
USIM
Mobile Terminal
Terminal eqment
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UE Functions
1) Mobile Termination

• Radio Attachment
• Speech Encoding/Decoding
• Radio Channel management
• Rate Adaptation
• Man-Machine Interface
• Mobility Management

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2) Terminal Equipment

• Control of Hardware
• Access to Services

3) USIM
Universal Subscriber Identity Module

• Identity of Subscriber
• IMSI
• Subscriber Related Information

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UE Protocols

• Access Stratum Protocol
• Non-access Stratum Protocol

Classification of UE

• Single Radio Mode
• Multi-Radio Mode

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WCDMA Overview

• Direct-sequence CDMA
• Wideband
• Synchronization Aspect
• Modes of Operation

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Access Network
TO CORE NETWORK
BSS
RNS
BSC
RNC
BTS
BTS
NODE B
NODE B
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Node-B
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Functions of UTRAN

• Transfer of User Data
• System Access Control
• Security Functions
• Mobility Management
• Radio Resource Management
• Broadcast/Multicast Services

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UTRAN Protocols

• Physical Layer
• MAC Protocol
• Radio Link Control
• Packet Data Convergence Protocol
• Broadcast/Multicast Control
• Radio Resource Control

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RNC Appearance
Blank panel
Power supply
Cooling fan
Sub-rack
Cable tray
Dust coverage
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CORE NETWORK
Entities of core network

• Home Location Register
• Authentication Center
• Equipment Identity Register
• SMS Entities
• Visitor Location Register

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Entities of core network

• Mobile Switching Center (MSC)
• GATEWAY MSC
• SGSN
• GGSN
• GMLC

Serving GPRS Support Node
Gateway GPRS Support Node
Gateway Mobile Location Center
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Functions of Core Network

• Mobility Management
• Call Handling
• Session Management
• Messaging Services
• Security Functions
• Supplementary Services

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Procedures in UMTS

• Radio Resource Control Procedures
• Mobility Management
• Call Handling
• Session Management

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Radio Resource Control
CELL_PCH
CELL_FACH
CELL_DCH
URA_PCH
--------------------------------------------------
--------------------------------------
IDLE MODE
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Paging

• To establish signaling connection
• Cell update procedure
• Master information Block Info.
• Dedicated paging

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RRC connection SETUP
UTRAN
MS
MS in IDLE mode
RRC connection request
RRC connection setup
MS in Connected mode
RRC connection release
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Call Handling
GMSC
M S
VMSC
M S
VMSC
VLR
VLR
HLR
Control signaling
Data path
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Session Management
GGSN
SGSN
RNC
PDCP
Gn/Gp interface
Uu interface
Iu interface
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Mobility Management
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Mobility Management
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IP Initiatives

• SIGTRAN
• signaling transport
• it includes many protocols like MTP3, ISUP,
  SCCP, TCAP, MAP etc.
• Functions
• Flow Control
• in-sequence delivery
• Logical Identification
• Error Detection
• SCTP

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IP Multi-media

• JAVA/html Applications
• SIP
• Session initiated protocol

to IP Based network
IMS
Session initiated protocol
UTRAN PS Domain
to PSTN Network
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Thank you