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A Uniform Resource Name (URN) Namespace for the Hybrid Broadcast Broadband TV (HbbTV) Association

The information below is for an old version of the document that is already published as an RFC.
Document Type
This is an older version of an Internet-Draft that was ultimately published as RFC 7528.
Authors Paul Higgs , Jon Piesing
Last updated 2015-10-14 (Latest revision 2015-01-12)
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status Informational
Stream WG state (None)
Document shepherd Barry Leiba
Shepherd write-up Show Last changed 2014-12-04
IESG IESG state Became RFC 7528 (Informational)
Action Holders
Consensus boilerplate Yes
Telechat date (None)
Responsible AD Barry Leiba
Send notices to (None)
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
IESG                                                           P. Higgs
Internet Draft                                               J. Piesing
Intended status: Informational                        HbbTV Association
Expires: July 2015                                     January 12, 2015

     A Uniform Resource Name (URN) Namespace for the HbbTV Association

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on July 12, 2015.

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   This document describes a Uniform Resource Name (URN) namespace for
   the Hybrid Broadcast Broadband TV Association (HbbTV) for naming
   persistent resources defined within HbbTV specifications. Example
   resources include technical documents and specifications, eXtensible
   Markup Language (XML) Schemas, classification schemes, XML Document
   Type Definitions (DTDs), namespaces, style sheets, media assets, and
   other types of resources produced or managed by HbbTV.

Table of Contents

   1. Introduction...................................................2
   2. URN Specification for the HbbTV Namespace Identifier (NID).....3
   3. Examples.......................................................5
   4. Namespace considerations.......................................5
   5. Community Considerations.......................................6
   6. Security Considerations........................................6
   7. IANA Considerations............................................6
   8. References.....................................................7
      8.1. Normative References......................................7
      8.2. Informative References....................................7
   9. Acknowledgments................................................7

1. Introduction

   HbbTV (Hybrid Broadcast Broadband TV) is a new industry standard
   providing an open and business neutral technology platform that
   seamlessly combines TV services delivered via broadcast with services
   delivered via broadband and also enables access to Internet only
   services for consumers using connected TVs and set-top boxes. The
   founding members of the HbbTV consortium together with a large group
   of supporters jointly developed the HbbTV specification to create a
   global standard for hybrid entertainment services. Version 1.2.1 of
   this specification was published by ETSI as ETSI TS 102 796 [HbbTV12]
   in November 2012.

   The HbbTV specification is based on existing standards and web
   technologies including OIPF (Open IPTV Forum), CEA, DVB and W3C. The
   standard provides the features and functionality required to deliver
   feature rich broadcast and internet services. Utilizing standard
   Internet technology it enables rapid application development. It
   defines minimum requirements simplifying the implementation in
   devices and leaving room for differentiation, this limits the
   investment required by CE manufacturers to build compliant devices.

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   The HbbTV association is a pan.European initiative aimed at providing
   an alternative to proprietary technologies and delivering an open
   platform for broadcasters to deliver value added on.demand services
   to the end consumer.

   HbbTV has a wide range of supporters from across the broadcaster and
   CE industries.

   HbbTV would like to assign unique, permanent, location-independent
   names based on URNs for some resources it produces or manages.  These
   URNs will be constructed according to the URN syntax defined in
   [RFC2141]. This namespace specification is for a formal namespace to
   be registered according to the procedures set forth in [RFC3406].

2. URN Specification for the HbbTV Namespace Identifier (NID)

   This section provides the information required to register a formal
   namespace according to the registration procedure defined in
   [RFC3406]. The URNs conform to the syntax defined in [RFC2141].

   Namespace ID:


   Registration Information:

      Version: 1

      Date: 2014-08-07

   Declared registrant of the namespace:

      Name:          Mr. Peter Macavock

      Title:         Administrator

      Affiliation:   HbbTV Association

      Address:       L'Ancienne-Route 17A,

                     CH-1218 Grand-Saconnex, Suisse

      Phone:         + 41 22 717 27 14 Email:

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   Declaration of structure:

      URNs assigned by HbbTV will have the following structure based on
      the organizational structure of the resources specified in the
      HbbTV specifications:


      where the syntax of "<NSS>" is specified in Section 2.2 of the
      URN Syntax requirements ([RFC2141]).

      The individual URNs will be assigned by HbbTV through the process
      of development of the HbbTV specifications.

   Relevant ancillary documentation:


   Identifier uniqueness considerations:

      HbbTV will establish unique identifiers as appropriate and will
      ensure that an assigned string is never reassigned.

   Identifier persistence considerations:

      HbbTV is committed to maintaining the accessibility and
      persistence of all resources that are officially assigned URNs by
      the organization. The registration tables and information will be
      published and maintained by HbbTV on its web site.

   Process of identifier assignment:

      The assignment of identifiers is fully controlled and managed by

   Process of identifier resolution:

      Not applicable; the "hbbtv" namespace is not listed with a
      Resolution Discovery System.

   Rules for Lexical Equivalence:

      The "<NSS>" is case-insensitive.

   Conformance with URN Syntax:

      No special considerations.

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   Validation mechanism:

      None specified. URN assignment will be managed completely and
      published by HbbTV.



3. Examples

   The following example of schemas and classification schemes is taken
   from the current HbbTV specification [HbbTV12]


   The following examples of schemas and classification schemes are
   under consideration for inclusion in a future version of the HbbTV
   specification currently under development.



4. Namespace considerations

   A unique formal namespace is required by HbbTV in order to specify
   how the various existing standards can be linked in order to create a
   true end-to-end ecosystem for standards-based IPTV deployments, and
   to provide the necessary system-wide resources.

   URN assignment procedures:

      The individual URNs shall be assigned through the process of
      development of HbbTV specifications by the Hybrid Broadcast
      Broadband TV Association. The latest information about HbbTV
      defined specifications can always be found at the owner's website

   URN resolution/delegation:

      The resolution and delegation shall be determined through the
      process of development of specifications by the HbbTV

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      Since the implementations envisaged cover a wide range of devices
      with quite different access methods and capabilities, no single
      resolution or delegation mechanism can be referenced in this

   Type of resources to be identified:

      Types of resources to be identified include XML schema definition
      files, classification schemes and identification systems defined
      and published by HbbTV. These resources being identified
      constitute a metadata system to describe digital multimedia
      broadcast services or content conveyed as part of such services.

      The latest HbbTV defined specifications can always be found at

5. Community Considerations

   URNs defined by HbbTV will be used by implementers of hybrid
   broadcast/broadband systems, services, products, and applications
   based on the HbbTV specification. They are an essential component of
   the open ecosystem that is being facilitated by HbbTV.

   HbbTV specifications are developed through a consensus based process
   by member organizations representing most aspects of the digital
   television ecosystem, a full list of HbbTV members can be found at

6. Security Considerations

   There are no additional security considerations other than those
   normally associated with the use and resolution of URNs in general,
   which are described in [RFC1737], [RFC2141], and [RFC3406].

   This document registers a namespace for URNs.  HbbTV may assign
   special meaning to certain of the characters of the Namespace
   Specific String in its specifications.  Any security consideration
   resulting from such assignment is outside the scope of this document.

7. IANA Considerations

   This document defines a URN NID registration of "hbbtv". IANA is
   requested to include it in the URN Namespaces registry.

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8. References

8.1. Normative References

   [RFC1737] Sollins, K. and L. Masinter, "Functional Requirements for
             Uniform Resource Names", RFC 1737, December 1994.

   [RFC2141] Moats, R., "URN Syntax", RFC 2124, May 1997.

   [RFC3406] Daigle, L., van Gulik, D., Iannella, R. and P. Faltstrom,
             "Uniform Resource Names (URN) Namespace Definition
             Mechanisms", October 2002.

8.2. Informative References

   [HbbTV12] ETSI TS 102 796 v1.2.1, "Hybrid Broadcast Broadband TV"

9. Acknowledgments

   This document was prepared using

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Authors' Addresses

   Paul Higgs
   HbbTV Association
   c/o Ericsson Inc, 6 Concourse Parkway, suite 3000,
   Atlanta, GA 30328, USA

   Phone: +1-650-580-1731

   Jon Piesing
   Chair, Technical Specification Group,
   HbbTV Association
   c/o TP Vision, Pathoekeweg 11, 8000 Brugge, Belgium

   Phone: +32 484 430 060

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