1. IEEE 802.21 MEDIA INDEPENDENT HANDOVER
DCN: bcst
Title: Broadcast Handover Architecture
Date Submitted: July 14, 2009
Presented at IEEE session #33 in SF
Authors or Source(s):
Hongseok Jeon, Eunah Kim, Hyunho Park, Junghoon Jee, Changmin Park (ETRI)
Abstract: General functional architecture for broadcast handover based on OMA BCAST and IPDC.

2. IEEE 802.21 presentation release statements
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3. Legacy Architecture
802.21b architecture in 21-09/0041r3 raises some questions;
Why WLAN is included in the broadcast network?
Why OMA BCAST has only bidirectional technologies as its bearers?
What is difference between Content Creation and Content Provider?
What is service provider?
We need to generalize and clarify the architecture.
Source: bcst-broadcast-services-use-cases-and-requirements.

4. Our Approach
802.21b is based on a strong trend towards convergence between telecommunication and classical broadcast sectors.
Two standard efforts have been emerged as a result of this convergence;
OMA Mobile Broadcast Service Enabler Suit (BCAST)
DVB Internet Protocol Datacasting (IPDC)
Since OMA BCAST and IPDC will be key users of b, b architecture should be based on them.
This contribution first reviews the functional architecture of BCAST and IPDC, and suggests a general architecture of b with their common functional components.

5. OMA BCAST Architecture (1/2)
Source: Mobile Broadcast Service Architecture, Approved Version 1.0 – 12 Feb. 2009, OMA-AD-BCAST-V1_ A

6. OMA BCAST Architecture (2/2)
Content Creation:
Source of contents (e.g. stream server)
Providing base material for content descriptions (e.g. media type, codec)
BCAST Service Application:
Translating (e.g. encoding.) if a media type and CODEC of the contents are different from those of BCAST standard.
Providing additional information (e.g. user location, user profile) as well as contents descriptions.
Interaction related to BCAST service.
BCAST Service Distribution/Adaptation:
Aggregating and delivering BCAST services.
Determining of a suitable bearer with the given information.
Performing adaptation to the specific bearer.
BCAST Subscription Management:
Service provisioning such as subscription and payment.

7. IPDC Architecture (1/2)
Source: IP Datacast over DVB-H: Architecture - TR v1.1.1

8. IPDC Architecture (2/2) Content Creation: Service Application:
Primary source of content
Service Application:
Aggregating content from multiple sources and their related metadata.
Encoding streaming content for the terminal
Generates service description metadata(e.g. title, genre, and time) for Electronic Service Guide (ESG)
Service Management:
Service configuration and resource allocation
Assignment of services to location, to bandwidth and schedules services over time.
Service Guide Provisioning
Aggregation of ESG from service applications
Security/service protection provision
Management of user access to service applications

9. Common Functional Components
OMA BCAST
IPDC
Content Creation :
Primary source of content
Content Creation
Content Creation
Service Provider :
Aggregation and Delivery of contents and their metadata
Media encoding
BCAST Service Application
Service Application
BCAST Service Distribution
/Adaptation
Service Management:
Determination of a suitable bearer
Adaptation to the specific bearer
Resource allocation
Service Management
Broadcast Network
Mobile Network
Broadcast Network
Mobile
Network

10. Proposed General Architecture
MIH IS
Content
Creation
Service Provider
Service Management
MIHF
Broadcast
Network
Mobile
Network
Data Path
Control Path
MIH Path
MIHF
Controlled content
(by BCAST or IPDC)
DVB-H
802.11
802.16
Uncontrolled contents