Internet Engineering Task Force (IETF) P. Higgs Request for Comments: 7528 J. Piesing Category: Informational HbbTV Association ISSN: 2070-1721 April 2015 A Uniform Resource Name (URN) Namespace for the Hybrid Broadcast Broadband TV (HbbTV) Association
AbstractThis document describes a Uniform Resource Name (URN) namespace for the Hybrid Broadcast Broadband TV (HbbTV) Association 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. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7528.
Copyright Notice Copyright (c) 2015 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. 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 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7 HbbTV12] in November 2012. The HbbTV specification is based on existing standards and web technologies including the Open IPTV Forum (OIPF), Consumer Electronics Association (CEA), Digital Video Broadcasting (DVB), and World Wide Web Consortium (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 consumer electronics manufacturers to build compliant devices. 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 consumer electronics 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]. RFC3406]. The URNs conform to the syntax defined in [RFC2141]. Namespace ID: "hbbtv" 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, Switzerland Phone: + 41 22 717 27 14 Email: firstname.lastname@example.org
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: urn:hbbtv:<NSS> 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: None. 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 HbbTV. 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.
Validation mechanism: None specified. URN assignment will be managed completely and published by HbbTV. Scope: Global HbbTV12]. urn:hbbtv:dash:profile:isoff-live:2012 The following examples of schemas and classification schemes are under consideration for inclusion in a future version of the HbbTV specification currently under development. urn:hbbtv:sync:timeline:ebu-tt-d urn:hbbtv:config:oitf:oitfCapabilities:2014-1 https://hbbtv.org/pages/about_hbbtv/specification.php> URN resolution/delegation: The resolution and delegation shall be determined through the process of development of specifications by the HbbTV Association.
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 document. 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 <https://hbbtv.org/pages/about_hbbtv/specification.php> http://hbbtv.org/pages/hbbtv_association/members.php> 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 (NSS) in its specifications. Any security consideration resulting from such assignment is outside the scope of this document.
[RFC1737] Sollins, K. and L. Masinter, "Functional Requirements for Uniform Resource Names", RFC 1737, December 1994, <http://www.rfc-editor.org/info/rfc1737>. [RFC2141] Moats, R., "URN Syntax", RFC 2141, May 1997, <http://www.rfc-editor.org/info/rfc2141>. [RFC3406] Daigle, L., van Gulik, D., Iannella, R., and P. Faltstrom, "Uniform Resource Names (URN) Namespace Definition Mechanisms", BCP 66, RFC 3406, October 2002, <http://www.rfc-editor.org/info/rfc3406>. [HbbTV12] ETSI, "Hybrid Broadcast Broadband TV", ETSI TS 102 796 v1.2.1, November 2012.