1. Satellite Digital Multimedia Broadcast system : a new tool for Public Protection Disaster Recovery B. MARTIN (beatrice.martin@space.alcatel.fr) Workshop on Broadband Wireless Ad-Hoc Networks and Services, 12th - 13th September 2002, ETSI, Sophia Antipolis, France

2. S-DMB : a new tool for Public Protection Disaster Recovery p 2 All rights reserved © 2002, Alcatel S-DMB for PPDR  Introduction  S-DMB System concept  Applications  User Equipment  Radio Access Network  S-DMB flexibility  System capacity  Conclusion

3. S-DMB : a new tool for Public Protection Disaster Recovery p 3 All rights reserved © 2002, Alcatel Introduction  S-DMB is based on 3GPP UTRA FDD W-CDMA  re-use of chipset and radio protocol technology  re-use of network infrastructure equipment  re-use of 3GPP handsets with minor adaptation  Mass marketed communication medium where  terrestrial coverage not deployed for business attractiveness reasons  terrestrial system suffered environmental damages  terrestrial network requires complementary coverage  Low to high data rate broadcast, point to point, location services  IMT-2000 Mobile Satellite Service (MSS) frequency band  Based on a dedicated high power geo-stationary satellite

4. S-DMB : a new tool for Public Protection Disaster Recovery p 4 All rights reserved © 2002, Alcatel S-DMB System concept - Radio Access Architecture  S-DMB is operable on its own  Frequency bands  Full reuse of 3GPP UTRA FDD W-CDMA waveform  all the cells use the same frequency spectrum (full frequency reuse)  no frequency planning requirement

5. S-DMB : a new tool for Public Protection Disaster Recovery p 5 All rights reserved © 2002, Alcatel S-DMB System concept - Radio Access Architecture : "On its own configuration"  Network infrastructure with fully standardized 3GPP equipment: Node B, RNC, OMC  Suitable for rural, suburban and urban when the handset is visible from the satellite

6. S-DMB : a new tool for Public Protection Disaster Recovery p 6 All rights reserved © 2002, Alcatel S-DMB System concept - Radio Access Architecture Full coverage with Gap Fillers  Situations where the handset is not visible from the satellite (blockage by buildings, indoor penetration, etc.)  network of Gap Fillers : signal repetition within a terrestrial coverage

7. S-DMB : a new tool for Public Protection Disaster Recovery p 7 All rights reserved © 2002, Alcatel S-DMB System concept - Radio Access Architecture Gap Fillers  Gap Fillers :  Repetition and transparent amplification in the MSS band  Synchronous transmission of the same content over the same code at the same frequency  UE Rake receiver combination of the terrestrial and satellite signals  1 carrier reused in all the spots  no terrestrial frequency planning requirement  fast deployment  low power/low cost 3GPP equipment  may be co-located with 3GPP terrestrial Node Bs

8. S-DMB : a new tool for Public Protection Disaster Recovery p 8 All rights reserved © 2002, Alcatel S-DMB System concept - System coverage  One geostationary satellite,12 meters antenna diameter  European + North Africa coverage : 44 individual spots 30 spots for restriction to Europe  200W per spot  Handset elevation : 16 to 42°

9. S-DMB : a new tool for Public Protection Disaster Recovery p 9 All rights reserved © 2002, Alcatel Regulatory issues  Joint support of :  European Commission  European Space Agency (ESA)  French Space Agency (CNES)  ETSI : Work item SES-00078  Evaluation of W-CDMA UTRA FDD as an IMT-2000 Satellite Radio Interface  ITU-8F : on going action for S-DMB scenarios proposal in the IMT-2000 extension band

10. S-DMB : a new tool for Public Protection Disaster Recovery p 10 All rights reserved © 2002, Alcatel S-DMB Applications Primarily designed for mass market standard commercial purpose Also designed for Public Protection and Disaster Relief Missions  Early warning and public alert :  Emergency telecommunication services  Mobile network infrastructure back-up  Government institutional communication tool in case of disaster  Assistance, Search And Rescue (SAR)  Global Monitoring for Environment and Safety (GMES)  Other Location Based Services

11. S-DMB : a new tool for Public Protection Disaster Recovery p 11 All rights reserved © 2002, Alcatel S-DMB User Equipment  S-DMB basic handset = 3G class 3 handset (250 mW) with adaptation for frequency agility to MSS  Possibility to transmission power and antenna gain boosting

12. S-DMB : a new tool for Public Protection Disaster Recovery p 12 All rights reserved © 2002, Alcatel S-DMB data rates  Forward link : low data rate (~1.5 kbps) to high data rate (384 kbps)  Return link : due to transmit poser limitations, depending on  S-DMB User Equipment configuration  S-DMB User Equipment location in the satellite spot (i.e. elevation)  in any case, minimal low data rate service (Short Message Service) (assumption : 30° average UE elevation, 10 dB link margin)

13. S-DMB : a new tool for Public Protection Disaster Recovery p 13 All rights reserved © 2002, Alcatel Radio Access Network - S-DMB channels Minimum set of 3GPP channels

14. S-DMB : a new tool for Public Protection Disaster Recovery p 14 All rights reserved © 2002, Alcatel Radio Access Network - Protocol stack for SMS

15. S-DMB : a new tool for Public Protection Disaster Recovery p 15 All rights reserved © 2002, Alcatel Radio Access Network - Protocol stack for Broadcast/Multicast

16. S-DMB : a new tool for Public Protection Disaster Recovery p 16 All rights reserved © 2002, Alcatel S-DMB flexibility  Transmission resources pre-emption by authorised organisation:  on a spot basis or  on a subset of radio resources (W-CDMA code tree)  ordered at OMC level  Possibility to focus satellite power on a restricted regional area  Support of redundancy (gateway geographical dispatching  Dynamic priority management (subscriber classes)  Support of data encryption  Support of time diversity

17. S-DMB : a new tool for Public Protection Disaster Recovery p 17 All rights reserved © 2002, Alcatel System Capacity  SMS :  Forward Link  1900 simultaneous transfers,  827 SMS/second  Maximum transfer delay : 6.8 s  Return Link

18. S-DMB : a new tool for Public Protection Disaster Recovery p 18 All rights reserved © 2002, Alcatel Conclusions  Full compatibility of S-DMB with UTRAN FDD W-CDMA  S-DMB handset = 3GPP handset + MSS frequency agility  3GPP network infrastructure (Node B, RNC, OMC,…)  reduce production costs  3GPP handsets = S-DMB UEs scattered  S-DMB UEs are in ownership of people at the moment of emergency situation  Easy preemption for security mission  Radio resource distribution to focused geographical areas  S-DMB may be deployed for commercial use and pre-empted for Public Protection Disaster Recovery mission  Fast deployment