AndmesideIRT 0030

loeng 12 23. nov. 2005

Avo Ots

telekommunikatsiooni õppetoolraadio- ja sidetehnika instituut

avots@lr.ttu.ee

Multi-access IMS

• Common IP version (=IPv6) makes the multi-access case much easier

GGSN

P-CSCF

S-CSCF IMS(IPv6)

3GPPaccessnw

PDSN 3GPP2accessnwWLAN

access nw

P-CSCF

SIP Signaling for building up the session

User IP data

SIP

P-CSCF

IPv4 vs IPv6

Ver. TrafficClass

Source Address

Flow Label

Payload Length NextHeader

HopLimit

Destination Address

Ver.

Time toLive

Source Address

Total LengthType ofService

HdrLen

Identification FragmentOffsetFlg

Protocol HeaderChecksum

Destination Address

PaddingOptions...

HdrLen

Identification FragmentOffsetFlg

HeaderChecksum

PaddingOptions...

shaded fields are absent from IPv6

Basic Address Types

unicast:for one-to-onecommunication

multicast:for one-to-manycommunication

anycast:for one-to-nearestcommunication

M

M

M

A

A

A

U

Standardized technology

MMSMMS

JavaJava

XHTML andTCP/IPXHTML andTCP/IP

ColordisplaysColordisplays

Imaging and camera integration

Imaging and camera integration

MultimediaStreamingMultimediaStreaming

PresencePresence

PositioningPositioning

DRMDRM

GPRSEDGEWCDMA

CDMA2000

GPRSEDGEWCDMA

CDMA2000

Mu

ltim

od

eM

ult

imod

e

VideoVideo

MIDIMIDISymbianSymbian

IPv6IPv6 SIPSIP

BluetoothWLANBluetoothWLAN

CSCFUMS

SIP

Invite player

Peter: 00:00:00Thomas: 00:00:00

Chat> Peter: I am going to win this time!>Thomas: Yeah right, in your dreams!

Thomas PeterIP Connection

Game data

Chat

Push toStream

Quit

Chat

Peter: 00:00:00Thomas: 00:00:00

> Peter: I am going to win this time!>Thomas: Yeah right, in your dreams!

IPv6

peer-to-peer IP connectivity

CSCFUMS

SIP

Invite player

Peter: 00:00:00Thomas: 00:00:00

Chat> Peter: hey, look what just passed by!

Thomas PeterIP Connection

Game data

Streaming video

Push toStream

Quit

Peter chooses to add a

streaming component to share what he

is seeing

Streaming video from Peter:

IPv6

peer-to-peer IP connectivity

mobile services = ”serverless media”

CSCFUMS

SIP

Thomas PeterIP Connection

Game data

Chat

Peter: 00:00:00Thomas: 00:00:00Signaling only

Media components

No NATs in between, public IP addresses are needed

Example services: gaming, chat, streaming, Voice/video over IP, etc.

The SIP/IMS user plane is peer-to-peer in nature - SIP/IMS sessions between mobiles in different Private IPv4 address spaces become highly complicated. This is why public IP addresses are required. The only future proof solution is provided by IPv6.

The SIP/IMS user plane is peer-to-peer in nature - SIP/IMS sessions between mobiles in different Private IPv4 address spaces become highly complicated. This is why public IP addresses are required. The only future proof solution is provided by IPv6.

IPv6