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Migration towards IP standards in GSM Mobile Networks. Rajkrishna Srinivasan 780915A355 2G1330, Wireless and Mobile Network Architecture 3 rd June 2004 Royal Institute of Technology [email protected] Structure. Why this topic? GSM Introduction The life cycle IP in GSM IP in GPRS IP in 3G

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migration towards ip standards in gsm mobile networks

Migration towards IP standards in GSM Mobile Networks

Rajkrishna Srinivasan

780915A355

2G1330, Wireless and Mobile Network Architecture

3rd June 2004

Royal Institute of Technology

[email protected]

structure
Structure
  • Why this topic?
  • GSM Introduction
  • The life cycle
  • IP in GSM
  • IP in GPRS
  • IP in 3G
  • The Future
why this topic
Why this topic?
  • Technology suffers due to proprietary standards
  • IP - Open Technology
  • Telephony through IP picking up
  • Best Effort Service in Carrier Grade System?
gsm introduction 1
GSM Introduction - 1
  • CEPT - Conférence Européenne des Postes et Télécommunications
  • SMG – ETSI
  • GSM – Global System for Mobile Communication
  • A Success Story – 190 + countries
gsm introduction 2

AUC

VLR

HLR

SS

MSC

A Interface

BSC

BSC

BSS

BTS

BTS

MS

MS

GSM Introduction - 2
life cycle
Life Cycle
  • Need to evolve
  • New methods to make money
  • Data Traffic
  • Existing spectrum getting congested
ip in gsm
IP in GSM
  • No provision for IP in this architecture
  • Ericsson Trials of “GSM on Net”1
  • But still no “real support” for DATA – only HSCSD
  • Since IP not used -> Problems of interoperability

1 -http://www.theregister.co.uk/1998/12/23/ericsson_plans_merger_of_wireless/

slide9
GPRS
  • First attempt to address problem of handling data
  • Consists of GSNs (Support Nodes)
  • Pay for data usage – always connected!
  • Only an interim solution
ip in gprs
IP in GPRS

Application

IP

IP

Relay

SNDCP

GTP

-

SNDCP

GTP

-

U

LLC

LLC

UDP

UDP

Relay

RLC

BSSGP

RLC

BSSGP

IP

IP

MAC

MAC

Network

Network

L2

L2

Service

Service

GSM RF

GSM RF

L1bis

L1bis

L1

L1

Um

Gb

Gn

Gi

MS

BSS

SGSN

GGSN

slide11
3G
  • What is 3GPP
  • Significance of Release 5
  • WCDMA UMTS
  • SIP and IP for Multimedia
3gpp architecture
3GPP Architecture
  • Radio Network Controller
  • Node B
  • Home Subscriber Server
  • IP Multimedia Subsystem
why ims
Why IMS
  • Release 4 of UMTS problems
  • VoIP market growth
  • Session Initiation Protocol -> Call Control Protocol
  • New content, killer apps, multimedia
why sip in ims
Why SIP in IMS
  • Change in internet model
  • Client Server – HTTP, FTP etc
  • Now it’s Peer to Peer
  • Here SIP has five roles in Establishing, maintaining and terminating communications: User Location, User Availability, User Capability, Call Setup and Call Handling
open service access
Open Service Access
  • Who is going to make use of all this technology?
  • How to boost ARPU?
  • Parley group
  • Parley OSA -> Common Application Programming Interface (API)
osa architecture
OSA Architecture

Application

server

Application

discovery

OSA API

Open Service Access

Interface

class

User Location

framework

Service capability server(s)

WGW

HLR

CSE

Servers

WPP

OSA internal API

challenges for ip
Challenges for IP
  • IP designed for traditional internet - delay is OK!
  • Lower layers shielded – Preventive strategy for critical applications
  • Notorious radio links
the future
The Future
  • 3GPP – Europe and Japan
  • 3GPP2 – America and Korea
  • IP in 3GPP and 3GPP2
conclusion
Conclusion
  • All IP alternative – Huge Bandwidth Available
  • More revenues – ARPU vs. OpEx/CapEx
  • More enriched services
  • 4G – The “all IP” system
thank you
Thank You
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