22 November 2005 Interactive Mobile TV: An Interworking Architecture Paul Pangalos King’s College London

1. 22 November 2005 Interactive Mobile TV: An Interworking Architecture Paul Pangalos King’s College London

2. Presentation Outline 1. The Mobile VCE Interworking Architecture 2. Interworking Functions and Protocols 3. Providing enriched services using the interworking framework

3. Mobile TV is not a dream anymore… «Je rêvais d’une boîte magique que je pusse emporter devers moi, qui me livrât des images et des portraits que je pusse animer ou qu’animât celui qui me les envoyait» Savinien Cyrano de Bergerac (L’autre Monde ou États et Empires de la Lune, 1657, p.211) • Commercial networks operate in Korea; • In the US a nationwide network is currently being deployed aiming at commercial operation within 2006; • First European commercial networks are also expected to be launched within 2006;

4. Mobile TV is not a dream anymore… «I dreamed of a magic box that I could carry towards me, which delivered images and portraits to me that I could animate or that animated which sent them to me» Savinien Cyrano of Bergerac (the other World or States and Empires of the Moon, 1657, p.211) translation • Commercial networks operate in Korea; • In the US a nationwide network is currently being deployed aiming at commercial operation within 2006; • First European commercial networks are also expected to be launched within 2006;

5. Mobile telecom networks Interactive one-to-one secure communication Mobility Authentication and Billing Web Portals Broadcast networks High transmission capacity Broadcast / one-to-many communication Rich Multimedia Content Electronic Service Guide Mobile and Broadcast collaboration • Interworking between mobile and broadcast provides new value added services that each technology individually cannot provide in a satisfactory manner

6. Baseline IoN Reference Architecture

7. What does the Gateway Do?

8. Signaling Between Gateways

9. Network Reference Architecture

10. Terminal Reference Architecture

11. Overall System Architecture Device Presence System IoN Wrapper Context Info Device Presence Manager Legacy Applications IoN Applications IoN-RM DPSRM Network Identity Server Paging & Location tracking DPS DPS IoN-GM CII Multicast Middleware UDP IGMP IP Network side User side Other DB Interfaces: CII: Context Information Interface DPSRM: Resource management to DPS Interface DPS: Network to Terminal Interface DPS Functional Blocks: NIS: Network Identity Server PLT: Paging and Location Tracking DPM: Device Presence Manager 19/30

12. Security Objective: • Provide a secure interworking environment How ? Two security issues • Gateway-to-gateway communication • Confidentiality, • Integrity, • Authentication, • Availability. • Applications and services: • Secure Web Services • A public key infrastructure • Allow single-sign on capability

13. Objective: Improve efficiency by providing a seamless multicast service over interworked UMTS and DVB networks instead of just broadcast How ? Two steps: Identify and group receivers Based on terminal capabilities, available access networks at receivers location, receiver preferences. Select the appropriate delivery network(s) Taking into account user location, terminal capabilities of all interested receivers as well as local cell resources. Multicast Group Management

14. Approach No centralised entity (compatible with interworking) An Interworking Resource Manager (IRM) in each network, complemented by Local Monitors, which communicate with each other via the Interworking Gateway Resource Management functions 1. Dynamic Access Network Selection Select the suitable access network, in terms of the most efficient resource usage in the service area 2. Adaptive Group-based Service Scheduling Batch multiple requests for the same service into a group for a specific duration and then serve them in the most efficient way (MBMS-DVB-H) 3. Caching and Broadcast Scheduling (Distributed) Resource Management

15. Device Presence System (DPS) What is the DPS? The device presence system (DPS) communicates with its counterpart component to do the following: 1. To gather, process, store and disseminate user context information. 2. To provide operational functions (i.e. registration, service initiation, handovers, etc) 20/30

16. 1. User Context (gather and process) a. Application Context - Presence attributes (i.e. online, idle, offline), - Communication identifiers: (i.e. sip:paul.pangalos@kcl.ac.uk,ftp:IP/Port) - Service Class (streaming, interactive, voice, background) - QoS requirements (bit rate, codecs, cost, etc) b. Interface Context Network/interface availability, Signal strength, Card inserts, interface configuration, etc c. Environment Context and User Profiles 21/30

17. 1. User Context (store and disseminate ) Context Information Terminal connectivity User preferences/profiles Terminal capabilities Multicast Group Management Mobility Management Resource Management Device Presence System 24/30

18. An example: The Device Presence System Client Personal Global Identifier User Devices Network availability Device communication means and identifiers Content

19. 2. Operational Functions

20. 2. Operational Functions

21. More than just TV on the phone Enriched services using the inter-working framework

22. Interactivity is the key Should mobile operators integrate their mobile phones with DVB-H? • This will benefit broadcasters by providing access to the lucrative mobile market and to a sophisticated billing system • Consumers will be encouraged to become passive television viewers leading to a reduction of cellular services such as call traffic. Viewers need to be encouraged to consume telecom services! ( Downloading, Voting, Merchandising, etc)

23. Possible Revenue Streams 1. Broadcast content to act as a teaser for use of the interaction channel as well as mobile services . (MMS and SMS*).*SMS still the killer application generating around £600/MB 2. Announcing cellular services through broadcast networks (i.e. weather, maps, ringtones, etc) 3. Delivering / caching 3G content to WLAN / DVB hotspots (Multimedia on Demand and Infostations)

24. Enriched Services through interworking • Content Delivery Platform • Handovers / Load Balancing • Cashing and Broadcast Scheduling • Multimedia on Demand • Always Best Connected ( P2P downloads)

25. Content Delivery Platform Content Delivery Options Content: video clip(15MB) Service: Music Clips Please select: • Send to mobile phone (cellular) (15 eur) - 8min • Send to PDA (WLAN) (5 eur) – 4min • Send to laptop (10 eur) - 1min

26. Handovers / Load Balancing

28. Content delivery via different networks based on available coverage, capacity, delivery price and user context info Caching and Broadcast Scheduling 2. Content Delivery 1. Content Request

29. Multimedia on Demand Satellite Broadcast Networks (DAB, DVB-H) GSM / GPRS UMTS Wireless LANs

31. Thank you !

32. Operational Functions

33. Registration User Terminal IoN Home Gateway Initialising DPS IoN Registration 1. personal global identifier 2. user profiles/terminal capabilities 3. available network interfaces  RETRIEVING AVAILABLE UPLINK INTERFACES…  CONNECTING TO HOME NETWORK… IoN Registration Reply 1. Registration status 2. Preferred networks DPS Ready

34. Content Request User Terminal IoN Home Gateway DPS IoN Content Request 1. User Context 2. Content  ACTIVATING ALL INTERFACES…  RETRIEVING AVAILABLE NETWORKS AT CURRENT LOCATION… IoN Content Reply 1. Signalling configuration DPS MULTICAST ADDRESS “A” ASSIGNED FOR SIGNALLING MULTICAST ADDRESS “B” ASSIGNED FOR DATA  WAITING FOR FURTHER MULTICAST SIGNALLING…

35. Batching, Grouping and Network Selection Fake Users IoN Home Gateway … IoN Registrations IoN Content Requests BATCHING GROUPING RESOURCE MANAGEMENT NETWORK SELECTION  BATCHING BASED ON NUMBER OF REQUESTS  GROUPING BASED ON USER CONTEXT, REQUESTED CONTENT & LOCATION  NETWORK SELECTION BASED ON NETWORK AVAILABILITY

36. Network Configuration IoN Home Gateway DVB IoN Gateway IoN Configuration 1. GROUP SETS - QOS SETS - CELL IDs **IoN Configuration Reply 1. INTERFACE AND SERVICE CONFIGURATION PARAMETERS FOR EACH GROUP SET ** EXAMPLES: 1. DVB-H: Program Specific Information (PSI) and Service Information (SI) 2. WLAN: Access point information, Terminal information, Service Information.

37. Session Notification DVB IoN Gateway IoN Home Gateway User Terminals Multicast Configuration Info … DPS Confirm Connectivity  ASSIGN TERMINALS INTO THEIR REPSECTIVE GROUPS  CONFIGURE WLAN / DVB-H INTERFACE(S) CONFIGURE TERMINAL TO RECEIVE SERVICE

38. Confirming Connectivity (CC) Objective To check without any user interaction/intervention that the recently configured interface is able to receive the assigned service from the broadcast network. Concept A confirm connectivity message is transmitted from one interface (either on the cellular network or the terminal itself), and monitoring whether or not that same CCM is received on the interface under test

39. Confirming Connectivity (CC) User Terminal DVB IoN Gateway IoN Home Gateway MMOD DVB-H 3G CC CC Listening for echo… CC CC ACK Waiting for content… **Content Delivery Request Content Delivery **Requesting different content flows from MMOD server with a specific QoS. (i.e. bitrate, encoding, framerate, etc)