Mobile Multimedia and Multimedia Systems Perspectives Mobile Multimedia and Multimedia Systems...

Mobile MultimediaMobile Multimediaand and

Multimedia Systems Multimedia Systems PerspectivesPerspectives

Introduction

Wireless is moving into broadband:

- 3G, 4G mobile networks

- WLAN

- DVB-H

- WIMAX

How to make maximum use of

these systems?

http://www.n-gage.com/

Technology progress

Broadband wireless media technology

is behind the corner:

WLAN ONBOARD 3G ONBOARD 4G ONBOARD

ALL INTEGRATED ONBOARD


COMPLEX MEDIA SYSTEMS BEHIND

WLAN

Wireless networks

OTHERWLAN3G-4G

Mobile IEEE 802.11a+b+g +n Other


Operator wants efficient resource

management: transmission

coverage and cost

User wants minimized cost of

access and seamless operation

System reqirements


Seamless changeover (handover)

between the systems is technical

challenge

Heterogenous networks may not

be synchronised, even content

stream may not be identical (e.g.

different compression ratios)

Seamless challenge


Gateways and managers

The changeover problem can be

solved by embedding gateways on

the network side and/or managers

on the terminal side

Multisystem terminals for

3G+WLAN will have severe

limitations on power consumption


Handover requirements

Seamless means perfect stream

splicing

This can be done when streams

are aligned in buffers and

synchronized

In general time stamps and bitrates

may not be identical


Gateways and managers

DVB-H

WLAN

3G

NETWORK

GATEWAY

TERMINAL

MANAGER

In case of operator controlled networks gateway

ensures synchronization. In heterogenous networks

terminal performs synchronization and handover

FUTURE MOBILE SYSTEM

IS BROADBAND FOR MULTIMEDIA

IT SUPPORTS MULTIPLE NETWORK

TYPES (3G, WLAN, 4G….)

IT SUPPORTS MULTIPLE OPERATION

MODES: UNICAST, MULITCAST,

BROADCAST, MULTISTREAMING

THE SYSTEM IS IP PROTOCOL BASED !


MOBILE DATA BANDWIDTH

FUTURE MOBILE SYSTEM WILL

HAVE DATA BANDWIDTH IN

MEGABITS/SECOND

3G - 1-10 Mb/s

4G - 10-50 Mb/s

WLAN - 1- 100 Mb/s


THE FUTURE MOBILE SYSTEM

THE FUTURE MOBILE SYSTEM

ARCHITECTURE IS DEVELOPED

THE STANDARD IS CALLED IMS

(Internet Multimedia Subsystem)

It is developed as an extension of 3G

mobile standard (release 5,6) by 3GPP (www.3gpp.org) and IETF (www.ietf.org)


http://www.3gpp.org/

THE IMS

The IMS is based on SIP protocol

This allows setup of most complex

multimedia sessions


The IMS basic idea

The basic idea of IMS is integration of

telephone CS (Circuit Switched) network

and IP network running in wireless systems

Radio access

in 3G. 4G

3G version

In USA


User capabilities in IMS

The IMS extends widely the capabilities of

current systems as regards the usage

of the system

User may have two types of addresses:

phone and Internet

Users may have multiple identities: work

and private in same equipment

Users may have multiple terminals with

different capabilities


Mobile IP – Short Overview

Key aspect of wireless networks is mobility.

Mobility is realized in cellular systems based

CS but it can be also realized in IP systems.

Here we provide short overview of IP mobility.

This does not mean it is realized in the IMS.

IMS can use standard mobility realized

in cellular systems.

Mobile IP Key Principles

The Wireless Internet is an IP-centric& mobility-enabled network:•IP addresses are used for all routing within the core network•IP protocols and technologies are used in the control plane•The network is functionally equivalent to a traditional cellular network (especially with respect to mobility and roaming)

Mobile IP Key Principles

IP Mobility focuses on Layer 3 of the core network:Mobility functions are independent of the access technology (2G, 3G, wire line, etc.) and the underlying network transport technology (ATM, Ethernet, etc.)

Mobility is based on the user, not the terminal:•Users will have a single subscription in a home network•Service Level Agreements (SLA’ s) must exist between all networks users will roam in

Mobile IP Components

•Mobile Node (MN): laptop, mobile phone, communicator,..etc

•Home Agent (HA): router of the home network

•Foreign Agent(FA): router of the foreign network

Mobile IP Components

(MN)

(FA)

(HA)

How Mobile IP works

Agent Discovery

Registration

Routing

Agent Discovery

1- HA’s and FA’s: periodically advertise their presence on their subnets by broadcasting agent advertisements

2-MN Listen: Am I on my home sub net or I am visiting some other subnet?

OR

1- MN sends an agent solicitation2- Any agent on the subnet is forced to send an immediate advertisement

Agent Discovery

•MN determines that it is connected to an (FA)

acquires a care of address

•Care of Address: and IP address given to the MN by the FA

(exit point of the tunnel from HA to FA)

Registration

•MN recieved the care of address: register it with the HA

•HA creats a mobility binding table

•HA advertises reachability to the home IP address of MN

•Example: a device connected to the internet called corresponding node (CN) sends a packet to MN, how it will reach MN?

CN HA FA MN

•power down or go back to home sub net: MN will deregister

•HA reclaims MN through tunnel

Security AssociationsIPSec SA 1 - between security gatewaysIPSec SA 2 - between AAA serversIPSec SA 3 - between user/terminal and mobility managerIPSec SA 4 - between user/terminal and correspondent node

IP Mobility:a lower level look

AAA+

SecurityGateway

Router

MobilityManager

FA HA

Internet

AAA+

SecurityGateway

Router

MobilityManager

IPSec SA 4

IPSec SA 3

IPSec SA 2

IPSec SA 1Visited Network Home Network

User

CorrespondentNode

IP Mobility Hand Over

AAA+

Router

MobilityManager

LSF

AAA+

SecurityGateway

Router

MobilityManager

DNS

Serving Network

Home Network

Router

Router

1

9

CorrespondentNode

43

10

SecurityGateway

Internet

AAA+

Router

MobilityManager

Visited Network

Router

Router7

SecurityGateway

2

9a9

2a

7a11

5

6

8

Capabilities Of Mobile IP

User identity and Addressability

Signaling and packet routing

Authentication and Authorisation

Security associations

Mobile client functionality

IP industry compatibility

FAHA

Internet Backbone

Haroon@SubNet1 is at home.Please ensure his datacomes here.

FAHA

Internet Backbone

Haroon@SubNet1 is in our CDMA network.Please ensure his datacomes here.

How Does It Look like?

At home

On the road

HAHaroon@SubNet1 is in our hotel.Please ensure his data comes here.

FA

Internet Backbone

Why certainly, we have an arrangementwith your Network operator. I can registeryou with free run of the house wireless LAN.

Enterprise LAN

FA

Internet Backbone

HA

Haroon@SubNet1 is at work.Please ensure his datacomes here.

At the office

In a hotel

How Does It Look like?

Roaming in IMS

Usser can roam in the CS (circuit switched) and IMS in different

Combinations (being in CS directed to IMS and opposite)


IMS layered architecture


Acronyms in the IMS scheme

CSCF Call Session Control Function

PDF Policy Decision Function

BGCF Breakout Gateway Control Function

MRFC Mutlimedia Resource Function Controller

MRFP Multimedia Resource Function Processor

MGCF Multimedia Gateway Control Function

MGW Multimedia Gateway Function

SGW Signalling Gateway

SEG Security Gateway

SGSN Serving GPRS Support Node

GGSN Gateway GPRS Support Node

IMMGW Internet Multimedia Gateway


HSS – Home Subscriber Server

HSS has functions for CS and PS networks:

Home Location Register HLR with Authentication Center AUC

Signalling conversion in SGW

Protocols from IMS domain (SIP) have to be converted to the CS domain

IMS Architecture

RAN – Radio Access Network

SLP – Subscription Locator Function

UE – User Equipment

Some reference points:

Gm – connection of UE to IMS (for SIP)

Mw – connection between CSCF’s

Cx – subscriber and service data

Dx – connection to SLF (Sub. Locator Func.

Conclusion

IMS is a complicated system satisfying all

possible multimedia requirements

IMS will coexist with CS system

At some point in the future all-IP systems

may by used exclusively

MULTIMEDA SYSTEMSIREK DEFEE

MULTIMEDIA SYSTEMSPERSPECTIVES


MULTIMEDIA SYSTEMS INTEGRATE

ALL THE COMPONENTS DESCRIBED

IN THIS COURSE:

- SERVERS

- NETWORKS

- CLIENTS

- SOFTWARE

- CONTENT


WHAT WILL BE THE FUTURE IN MULTIMEDIA

SYSTEMS?

WHAT IS HAPENNING RIGHT NOW IS THAT

NEW TECHNOLOGIES AND MULTIMEDIA

SYSTEMS ARE COMING ALL THE TIME,

ESPECIALLY IN THE MOBILE AREA-TERMINALS-NETWORKS-SOFTWARE


Historical development

• From mobile phone to smartphone


MOBILE PHONES EVOLVED INTO MOBILE MEDIA AND SERVICE DEVICES

THEY CHALLENGE PHOTOGRAPHIC CAMERAS, VIDEO CAMCORDERS, PORTABLE MUSIC

PLAYERS, GAME CONSOLES AND SERVICE ACCESS DEVICES


Heterogenous networking

From GSM radio network via Bluetooth to…

WIRELESS BROADBAND or…

From tens of kilobits to megabits per second

• 3G onboard WLAN onboard 4G onboard

• ALL onboard


•SO WE MAY THINK THAT MOST DEVICES•WILL BE MEDIA DEVICES AND CONNECTED BY• WIRELESS.

•HOW THIS MAY HAPPEN? IN THE FUTURE •WE WILL HAVE HUGE RANGE OF APPLICATIONS•AND SERVICES:


WE WILL HAVE VARIETY OF TERMINAL

DEVICES....


NETWORKING PLATFORMS WILL BE

INTEGRATING – ONE DEVICE WILL BE

ABLE TO CONNECT TO DIFFERENT NETWORKS


HOWEVER, ALL THESE NETWORKS WILL

BE BASED ON THE IP PROTOCOL:


•HERE THE BANDWIDTH GROWS

•HERE WE MOVE TO IP PROTOCOL

•HERE ARE DIFFERENT NETWORK TYPES


From Telephone to Internet

Telephone network for speech

Internet for data and… everything

•WLAN

IP networking is the future


New data transfer ways

From: person-to-person phone call

To: Data center-to-mass public

- TV

- Multicast Internet

• 3G MBMS WLAN IP Multicast • Multimedia• Broadcast &• Multicast

Massive distribution of content is

possible rather soon


What is mobile device?

• camera camcorder TV radio game PDA

• makeup device? Swiss army knife?


The Service Case: Mobile IPod

• IPod, Music Web shop • Portable Mobile Music device• Music with hard disc• Player

• Mobile device is an IPod, and phone,• and much more….


And the final destination...

• TECHNOLOGY MAY BECOME INVISIBLE

• LONG IN THE FUTURE….

MULTIMEDIA SERVICES

MANY INNOVATIONS ARE POSSIBLE

IN THIS AREA:

- CONTENT, NETWORKING AND USER

NEEDS ARE IMPORTANT

- SERVICE IDEA IS NOT SIMPLE TO

GET

- PRESENT SERVICES: TV, VIDEO,

GAMES – they look traditional in a way

INNOVATIVE SERVICES

THEY ARE POSSIBLE BUT ONE HAS TO

HAVE INNOVATIVE IDEA.

HOW TO GET AN IDEA??? No rules for

this, one has to think about it

INNOVATIVE SERVICEEXAMPLE

NEW SERVICES ARE POSSIBLE BUT

ONE HAS TO HAVE INNOVATIVE IDEA.

HOW TO GET AN IDEA??? No rules for

this, one has to think about it.

Example: service for fitness called iFit, www.ifit.com

iFit service exampleService idea:

Many people are concerned with fitness and buy specialized devices like fitness bikes and treadmills

• Treadmill is a substittute for running when

when it is cold, rainy or unsuitable surrounds

BUT, running on a treadmill is boring without

any new visual stimulation

SERVICE IDEA

Install display in the treadmill and show

running tracks in it

There will be new visual stimulation

making running less boring

IMPLEMENTATION OF THE IDEA

How to realize this, since users want new

tracks?

Solution: Use Google Streetview and maps

Users can design their own tracks then

BUT, running requires that the track

changes with the progress of running

How to do this?

IMPLEMENTATION OF THE IDEA

Solution: Built network connection into the

fitness device:

Now the fitness device may send and

receive control signals about the speed and

Incline. Device operation is synchronized

with the running track

Wireless module inserted into device

SERVICE IMPLEMENTATION

This service requires special fitness

devices compatible with wireless

connectivity – user has to buy it

Company charges monthly fee for providing

Web site which displays the track and

provides synchronization and tools.

THIS IS EXAMPLE OF INNOVATIVE

MULTIMEDIA SERVICE


• CONCLUSIONS TO THIS COURSE:

•WE WILL SEE HUGE PROGRESS IN MULTIMEDIA•SYSTEMS IN THE FUTURE.

•SYSTEMS WILL BECOME MUCH MORE COMPLEX•NETWORKS WILL BE BROADBAND WIRELESS.

•INFORMATION WILL BE DOWNLOADED ONLY•BY NETWORKS, PHYSICAL CARRIERS (LIKE E.G.•CD) WILL BE DISAPPEARING.

Date post:	18-Dec-2015
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