Internet DRAFT - draft-higgs-hbbtv-urn
draft-higgs-hbbtv-urn
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
draft-higgs-hbbtv-urn-01.txt
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Abstract
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:
"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, Suisse
Phone: + 41 22 717 27 14 Email: info@hbbtv.org
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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:
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.
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Validation mechanism:
None specified. URN assignment will be managed completely and
published by HbbTV.
Scope:
Global
3. Examples
The following example of schemas and classification schemes is taken
from the current HbbTV specification [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
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
at
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.
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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
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
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
http://hbbtv.org/pages/hbbtv_association/members.php
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 2-Word-v2.0.template.dot.
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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
Email: paul.higgs@ericsson.com
Jon Piesing
Chair, Technical Specification Group,
HbbTV Association
c/o TP Vision, Pathoekeweg 11, 8000 Brugge, Belgium
Phone: +32 484 430 060
Email: jon.piesing@tpvision.com
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