ETSI - TS 102 879
Access, Terminals, Transmission and Multiplexing (ATTM); IPCablecom Services for delivering multimedia and voice over DOCSIS network infrastructure
|Publication Date:||1 June 2010|
The present document specifies IPCablecom, (also referred to as PacketCable) multimedia services over DOCSIS.
The intent of the present document is to support the deployment of general Multimedia services by providing a technical definition of several IP-based signalling interfaces that leverage core QoS and policy management capabilities native to DOCSIS Versions 1.1 and greater. Throughout the present document, the term DOCSIS will be used to refer to any DOCSIS version greater than or equal to 1.1. For the purposes of the present document, Multimedia services may be defined as IP-based services (e.g. online gaming, video-conferencing, streaming media, etc.) requiring QoS-based network resources (as contrasted with services such as web browsing, e-mail, instant messaging and file-sharing that are commonly provided using best-effort flows). While telephony or voice-based services are not specifically excluded from this definition, the IPCablecom 1.x set of specifications provide coverage specific to this type of service delivery, and, therefore, those specifications should be consulted as appropriate.
IPCablecom Multimedia defines a service delivery framework that provides general-purpose QoS, event-based accounting, and security functionality founded upon the mechanisms defined in IPCablecom 1.x. However, due to the broader spectrum of applications and services addressed by this initiative, each of these functional areas has been revisited and generalized for the present purposes. Telephony-specific requirements and interfaces (e.g. call signalling, PSTN interconnection and electronic surveillance) are not part of IPCablecom Multimedia, while core functionality such as QoS resource management mechanisms, has been enhanced. Throughout this process, one of the primary objectives of this work has been to leverage and reuse as much of the existing body of IPCablecom 1.x investment, knowledge base, and technical functionality as possible.
Key features of the described Multimedia service delivery framework include:
• Simple, powerful access to DOCSIS QoS mechanisms supporting both time and volume-based network resource authorizations.
• Abstract, event-based network resource auditing and management mechanisms.
• A robust security infrastructure that provides integrity and appropriate levels of protection across all interfaces.
As outlined in the technical report , the current scope of the present document is limited to network-based QoS resource management and usage auditing capabilities. This approach was motivated by several criteria, including rapid time-to-market for QoS-enhanced Multimedia services (which may take the form of new applications or existing applications retrofitted per the present document), the absence of QoS signalling requirements on CPE devices, and security assurances provided by an absence of client-based QoS signalling.
In addition, the QoS signalling mechanisms outlined herein provide the foundation for client-based QoS signalling mechanisms which may be defined in the future. As such scenarios have already been considered and documented in the technical report, one of the secondary goals of the present document is to provide for smooth migration to a clientbased model as market and technology advances dictate. It should also be noted that the scope of the QoS framework defined in the present document is limited to the access network and that the choice of specific backbone QoS strategies is left as an administrative decision to be addressed by each service provider as it deems best.