The MoDiS experimental platform for the validation and demonstration - - PowerPoint PPT Presentation

The MoDiS experimental platform for the validation and demonstration of S-DMB functions and services

• I. Andrikopoulos, G. Kolonias

Space Hellas

• T. Gallet, M. Durand

Alcatel Space

• J. Vandermot, T. Dubois

Agilent Technologies

• L. Roullet

UDcast

• E. Bourdin

Ercom

Outline

MoDiS project overview S-DMB concept MoDiS experimental platform Validation approach Trials and Results Conclusions

The MoDiS project

MoDiS (Mobile Digital Broadcast Satellite) is an IST project partially funded by the European Commission under the FP5 framework

Started April 2002, duration 30 months Co-ordinated by Alcatel Space [F]; Project Manager: Michel Mazzella Daimler Chrysler [D], University of Surrey [UK], Agilent Technologies [B], Elitel [I], UDCast [F], Space Hellas [EL], Ercom [F], Alcatel Bell Space [B] and Monaco Telecom [MC]

Expected results

Proof of S-DMB concept through experimentation of critical issues

W-CDMA efficiency in broadcast mode with hybrid satellite/terrestrial transmission

Harmonisation with 3GPP MBMS standards Service demonstration

Streaming Push & store with adaptive caching in terminals of video / audio / web-based

contents

Groupcast (P2P)

S-DMB concept

3G Mobile Network

3G Base station

Content providers

Hub based

• n 3G equipment

Content Network

High power Geo-stationary satellite 3G handset

Interactive link in IMT2000 mobile terrestrial band

MBMS Broadcast/Multicast Service Centre 7 spots over Europe

Satellite distribution link in IMT2000 mobile satellite band

Local storage +

3G Air interface

Broadcast / multicast layer based on combined satellite and terrestrial repeaters architecture over 3G cellular networks

MoDiS experimental testbed

MoDiS terminal

SGSN GGSN

Terrestrial repeaters (x2) MoDiS data server 3GPP air interface Satellite emulator 3G terminal SDMB receiver Content manager + MMI 3G network Multimedia contents HUB emulator

Interactive link Distribution link

Validation approach

MoDiS terminal (application part) MoDiS Data Server MoDiS terminal (transmission part) Satellite/Hub simulator + Terrestrial repeater Hub network function emulator Application testbed: Content delivery, Reliable transport, Cache management, CDD usage, Conditional content use Transmission testbed: Macro-diversity, Synchronisation, Power saving MoDiS terminal (2.5 G / 3G terminal part) 2.5 G / 3G Access Network 2.5 G / 3G Core Network Complementary Mobile Network for the complete MoDiS testbed

To accelerate the adaptation/development of various components and the validation procedures, the MoDiS testbed was split into two distinct sub-testbeds:

• the application testbed
• the transmission testbed

This approach allows for:

• Simultaneous implementation of the

features to be validated and facilitated the assembly of the corresponding subsystems into a single testbed that exhibits the full MoDiS functionality in an integrated manner.

• Various features to be demonstrated

by using either of the two sub- testbeds

Functional view

Transmission testbed

Terrestrial repeater RF cable (3GPP interface) Satellite /Hub emulator

SDMB receiver

RNC simulator IUB/E1 HUB network fct emulator Node B IUB/ STM1 Attenuator Adaptator Frequency converter Combiner Network analyser Data source Data analysis Attenuator

Application testbed

MoDiS terminal MoDiS data server

Cache Mgr terminal Application server File server Scheduling/ routing unit terminal Web cam Scheduling/ routing unit server Ethernet switch PDA

MoDiS terminal

Scheduling/ routing unit terminal

LAN: plays the role of both the uni-directional S-DMB link and the interactive (2..5G/3G) link

Cache Mgr terminal WLAN WLAN access point GPS device

Detailed MoDiS testbed configuration

Terrestrial repeater (2x) Satellite /Hub emulator

SDMB receiver

RNC simulator IUB/E1 HUB network fct emulator Node B Adaptator Frequency converter Trolley MoDiS terminal MoDiS data server

Cache Mgr terminal Application server File server Scheduling/ routing unit terminal Web cam - GPS Scheduling/ routing unit server Ethernet switch PDA Ethernet switch

MCT network IP + 2.5/3G Network

WLAN access point SDMB receiver

Car MoDiS terminal

Cache Mgr terminal Scheduling/ routing unit terminal Web cam - GPS Ethernet switch

Car 3GPP air interface

MoDiS data server

File Server Application server Scheduler and Routing unit SDMB Hub

Video files Text + images Audio files

Content Provider (ex. LeMonde) https/sftp/ssh

• content / CDD

association

• Emergency
• notif. creation
• content upload

w or w/o CDD

Redaction Terminal Streaming server

• streaming session

scheduling & control

• broadcast scheduling
• content file lock

for broadcast

Q u e u e d f i l e s 1 ( a c t i v e c a c h e ) F

i l e N F i l e N + 1 F i l e N + 2

Q u e u e d f i l e s 2 ( C D D )c

d d xc

d d xc

S t r e a m i n g

s t r e a m P u s h m u l t i p l e x i n g I P m u l t i p l e x i n g C

• n

t e n t m u l t i p l e x i n g

Q u e u e d f i l e s 3 ( e m e r g e n c y )

Queues Mgnt push engine configuration Bandwidth allocation

• CDD parsing

XML RTP / WindowsMedia

• CDD creation

system call script

CDD CDD

• P2P clients

contribution + position

MoDiS Tal MoDiS Tal

• access for not-cached-

in-terminal content

MoDiS terminal

Ethernet Application Ethernet Application

2.5G Phone 2.5G Phone

Antenna

3G Phone 3G Phone 3G Phone 3G Phone GPS GPS

PCI IF IF Outer Modem

Protocol stack

Ethernet Radio Inner Modem RAKE S-DMB Receiver PCI IF IF Outer Modem

Protocol stack

Ethernet Radio Inner Modem RAKE S-DMB Receiver

GPS GPS

MoDiS terminal - internal interfaces of the application part

The trials

Signal quality Macro diversity Power consumption Reliable transport Content delivery Conditional access Applications

Parameters for trials

Number of sources

due to the choice of the test road

Power level of the sat emulator Power level of IMR

same level for both IMRs

Modes (data rate) and Type of services

with simultaneous emergency services

Terminals

trolley alone (with potentially car alongside) and car alone

S atellite E mulator JARDIN EXOTIQUE Terrestrial repeater MINISTERE Terrestrial repeater COSTAS

3 2 1

Monaco trials site

The satellite…

The MoDiS vehicle

MoDiS car terminal

The user…

Receiver measurements

TX Power: -90dBm Mode: 12K2

AGC BLER RAKE

Rake visualiser

Push & Store, Streaming and Emergency Services

Groupcast service architecture

This service allows end users to send in a cost efficient way the same content to a group of users. Ideal for PPDR and SAR applications

Groupcast - Chat

Groupcast - Video/Image messaging

Groupcast - Location mapping

Conclusions

MoDiS enables the demonstration of the S-DMB proof of concept through experimentation of the system main features and by demonstration of representative multicast/broadcast services Trials are ongoing and final results are expected by mid-October The MoDiS experimental platform is currently being upgraded in the frame of the MAESTRO FP6 IST project More information can be found at:

http://www.ist-modis.org