1). DVB-IPDC Reference Architecture:
2). Reference Points / Interfaces:
Ref Point | End Points | Usage |
CBMS-1 | From Broadcast network To Terminal | Broadcast network-specific singnalling, PSI/SI signalling in DVB-H. |
CBMS-2 | From Service Application To Terminal | Content Flow, including: |
CBMS-3 | From Service Management To Terminal | Electronic Service Guide (metadata, point-to-multipoint delivery). |
CBMS-4 | Between Service Management and Terminal (only for the interactive network) | • Electronic Service Guide (metadata, point-to-point delivery). • Access Control to service applications. |
CBMS-5 | Between Service Application and Terminal (only for the interactive network) | • Point-to-point transport services (SMS/MMS, IP connectivity). |
Ref Point | End Points | Usage |
CBMS-6 | From Service Management To Broadcast network | Configuration of the DVB-H transport (number of services, allocated bandwidth, etc.). |
CBMS-7 | Between Service Application and Service Management | • Service Application Declaration. |
Ref Point | End Points | Usage |
X-1 | Between Content Creation and Service Application | Provision of content to Service Application, including: |
X-2 | Between Interactive Network and Terminal | Interactive network specific interactions (authentication, mobility management, specific services such as voice, etc.). |
X-3 | Between Service Management and Interactive Network | This reference point may be used to access specific functions available in the interactive network, such as subscriber management or billing functions. |
§ CBMS = Convergence of Broadcast and
3). Functional Entity OV:
3.1). Content Creation
§ This is the primary source of content for distribution over IP Datacast. It may provide support for delivery paradigms, such as streaming.
§ Provides base material for content descriptions.
3.2). Service Application
§ Aggregates content from multiple sources and their related metadata in order to provide a particular service application.
§ Provides the head-end application logic.
§ Responsible to provide content encoded in the format understood by the terminal either via streaming or file carousel delivery.
§ Generates service description metadata to be used in the Electronic Service Guide (to be provided at CBMS-7).
§ Interaction end-point for terminals to interact with service application.
§ Service Protection provision.
§ A Service Application entity may exist for each application that is provided in IP Datacast.
3.3). Service Management
§ Consists of four sub-entities, which may be instantiated independently:
1. Service configuration and resource allocation:
§ Registration of service applications that contend for bandwidth of the broadcast bearer (i.e. one DVB-H IP platform in one DVB transport stream).
§ Assignment of services to location (wrt. Broadcast network topology), to bandwidth and schedules services over time.
§ There is one instance of this sub-entity associated with a broadcast bandwidth contention domain.
2. Service Guide Provisioning application:
§ Aggregation of ESG (metadata information) pieces from the service applications.
§ There may be multiple instances of this sub-entity.
3. Security / Service protection provision:
§ Management of user access to service applications.
4. Location services:
§ The service management entity may provide location services to service application(s) in a manner that is independent of the way they are actually obtained (such as interaction bearer network functionality or GPS).
3.4). Broadcast Network
§ Multiplexing of service applications at IP level.
§ Assignment of IP flows on DVB-H time slices (IP Encapsulation).
§ Transmission over DVB-H.
§ Security/Service protection provisioning
3.5). Interactive Network
§ Provision for terminal to interact with service management and/or service application.
§ This entity exists only if the IPDC-DVB-H terminal includes an endpoint for it and if service management and/or service application support the relevant reference points. Service applications may require communication over the interactive network.
§ May provide additional functionalities to Service Application or Service Management, such as Location Services (may require additional reference point)
§ Security/Service protection provisioning
3.6). Terminal
§ The user device.
§ Point of acquisition and consumption for content.
§ Client of network and service resources.
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