1. 21-09-0016-00-bcst IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-09-0016-00-bcst Title: HBSG Requirements and Use Cases Date Submitted: January, 2009 Presented at IEEE 802.21 session #30 in LA Authors or Source(s): Juan Carlos Zuniga (InterDigital) j.c.zuniga@ieee.org Jens Johann (Deutsche Telekom) j.johann@telekom.de Abstract: This presentation provides a background and status of the work carried out in the SG.

2. 21-09-0016-00-bcst IEEE 802.21 presentation release statements This document has been prepared to assist the IEEE 802.21 Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.21. The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/faq.pdf> Section 6 of the IEEE-SA Standards Board bylawshttp://standards.ieee.org/guides/bylaws/sect6-7.html#6 http://standards.ieee.org/board/pat/faq.pdf

3. 802.21b History Recapitulation Background information July’s 2008 Tutorial (DVB, DMB, MediaFLO TM ) Scope of 802.21b PAR definition Possible solutions Food for thought… 21-09-0016-00-bcst

4. Background Information 21-09-0016-00-bcst

5. Background IEEE 802 Tutorial on Handovers with Broadcast Technologies given during July‘s 2008 meeting in Denver Media independent handover information between independent technologies Support in different types of devices Addressing several Use Cases for service and network providers Technology‘s State of the art: 3GPP + DVB/ MediaFLO/ DMB – Covers partially uplink channel problems and the coverage problems – Commercial products capable of rudimentary handovers between 3GPP and DVB-H DigitalTV coverage problem exists in Europe DVB does not have full coverage for ubiquitous mobile TV service DVB Project looking at WLAN as a solution to the indoor problem 802.11aa looking at using WLAN for video streams transport New 802.21 Task Group to focus on Handovers with Broadcast Technologies Soon to be approved 21-09-0016-00-bcst

6. Broadcast World DVB DMB DVB DMB DVB MediaFLO DVB DMB DVB DMB 6 MediaFLO 21-09-0016-00-bcst

7. 7 Mobility Convergence Converged Device VoIP Server Instant Messaging Server Gaming Server Mobility WLAN 802.11 Cellular UMTS WiMax 802.16 Converged Device Seamless mobility between multiple radio technologies IP-based protocols and networks Always connected for Content and Web services Also needs: Support for evolving usage models Upgradeable for future more capable devices Minimal or no user intervention Seamless mobility between multiple radio technologies IP-based protocols and networks Always connected for Content and Web services Also needs: Support for evolving usage models Upgradeable for future more capable devices Minimal or no user intervention TV Broadcast Service Provider Network Provider 21-09-0016-00-bcst

8. Hybrid Networks Both Broadcast and Communications networks can benefit from each other WiMAX, WLAN, 3GPP/3GPP2 network operators can benefit from: Multicasting with much better quality, to a larger set of customers with one transmitter Market penetration with little investment DVB-H supported by the EU commission as the mobile TV standard 20 billion € expected revenue in 2011 (2M subscribers in 2006, 6M in 2007) Use of existing broadcasting brands and new services Broadcast network operators can benefit from: Virtual bidirectional channel and AAA support Enabling more services Customized advertisements, Mobile TV, live polls, purchase banners, interactive games, chat services, webcasting, file transfers, etc. 21-09-0016-00-bcst

9. Converged Devices and Standards In the following years we will see the dominance of more services relying on hybrid networks Devices capable of DVB-H, WLAN, UMTS are already available Fixed Mobile Convergence Alliance (FMCA) started interoperability Work Item on IEEE 802.21 MIH in June 2008 Interactive mobile TV standard for a common user interface with a media independent Java API (JSR 272) is also there Open Mobile Alliance (OMA) Mobile Broadcast Services Enabler Suite (BCAST) supports DVB-H, 3GPP MBMS, 3GPP2 and mobile unicast streaming systems at the application layer 21-09-0016-00-bcst

10. Service Provider Mobile Network Operator Content Provider Content Aggregator Content Creation Service Management OMA BCAST Broadcast Network (DVB) IEEE 802.11 (WLAN) Network IEEE 802.16 (WiMAX) Network Cellular (3GPP) TV GuideFile Content Service Meta Data Content Creation Service Management Shop Front End Service Application Management DRM Playout Management Live Content Broadcast Operator Broadcast Management Broadcast Service Network Example 21-09-0016-00-bcst

11. Scope of 802.21b 21-09-0016-00-bcst

12. 802.21b PAR (1/2) “This amendment defines mechanisms that enable the optimization of handovers between IEEE 802.21 supported technologies and downlink-only (DO) technologies.” “The purpose of this standard is to improve user experience by developing mechanisms that facilitate handovers between IEEE 802.21 supported technologies and DO technologies.” “Downlink-only technologies such as Digital Video Broadcasting (DVB), Terrestrial Digital Multimedia Broadcasting (T-DMB) and Media Forward Link Only (MediaFLOTM) are becoming more widespread in use. There is a need to support optimized handovers between these technologies and other technologies already supported by IEEE 802.21. Currently, there is no standard which specifies such handovers.” 21-09-0016-00-bcst

13. 802.21b PAR (2/2) “IEEE 802.21 defines mechanisms that enable handovers across various technologies such as IEEE 802 and 3GPP/3GPP2. These same mechanisms can be used for handovers with DO technologies. However, this requires enhancements to the IEEE 802.21 specification. The enhancements may include: Extensions of IEEE 802.21 primitives and protocol to support handovers with DO technologies. Definition of Media dependent SAP(s) and corresponding mapping of MIH link layer primitives for DO technologies.” 21-09-0016-00-bcst

14. Possible solutions 21-09-0016-00-bcst

15. Possible Approach for 802.21b DO Network MIH Function MIH Users Higher Layer Transport DO Interface L3 MIH Message Transport (IETF MIPSHOP)

16. 21-09-0016-00-bcst Food for thought (1/2) Use Cases to be addressed: Coverage extension DVB / DMB / MediaFLO to WiMAX / WLAN / 3GPP Load Balancing Number of unicast subscribers justifys setting up a bradcast service to hand them over Bidirectional channel Support for interactive services IP services only? Otherwise problem is hard to solve

17. 21-09-0016-00-bcst Food for thought (2/2) Is any support required in other wireless interfaces? WiFi, WiMAX, Cellular