Internet Draft A. Adolf DVB URN Scheme Category: Informational Micronas Expires November 2007 May 25, 2007 A Uniform Resource Name (URN) Namespace for the Digital Video Broadcasting Project (DVB) Status of this Memo Distribution of this memo is unlimited. By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/1id-abstracts.html The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. Abstract This document describes a Uniform Resource Name (URN) namespace for the Digital Video Broadcasting Project (DVB) for naming persistent resources defined within DVB standards. 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 DVB. Adolf Expires November 2007 FORMFEED[Page 1] Internet Draft DVB URN May 25, 2007 Table of Contents 1. Introduction ....................................................2 2. Specification Template ..........................................2 3. Examples ........................................................4 4. Namespace Considerations ........................................4 5. Community Considerations ........................................5 6. Security Considerations .........................................5 7. IANA Considerations .............................................5 8. References ......................................................5 1. Introduction The Digital Video Broadcasting Project (DVB) is an industry-led consortium of over 270 broadcasters, manufacturers, network operators, software developers, regulatory bodies and others in over 35 countries committed to designing global standards for the global delivery of digital television and data services. Services using DVB standards are available on every continent with a total of more than 100 million DVB receivers already deployed. DVB would like to assign unique, permanent, location-independent names based on URNs for some resources it produces or manages. This namespace specification is for a formal namespace. 2. Specification Template Namespace ID: "dvb" Registration Information: Version: 1 Date: 2007-02-28 Declared registrant of the namespace: Name: Peter MacAvock Title: Executive Director, DVB Project Office Affiliation: DVB Digital Video Broadcasting Address: Ancienne Route 17a CH-1218 Geneva SWITZERLAND Phone: +41 22 717 2719 Email: macavock@dvb.org Adolf Expires November 2007 FORMFEED[Page 2] Internet Draft DVB URN May 25, 2007 Declaration of structure: URNs assigned by DVB will have the following hierarchical structure based on the organizational structure of the DVB standards: urn:dvb:{assigned US-ASCII string} where "{assigned US-ASCII string}" is a US-ASCII string that conforms to URN Syntax requirements ([RFC2141]). The individual URNs will be assigned by DVB through the process of development of DVB standards. Relevant ancillary documentation: None Identifier uniqueness considerations: DVB will establish unique identifiers as appropriate. Uniqueness is guaranteed as long as the assigned string is never reassigned. Identifier persistence considerations: DVB is committed to maintaining the accessibility and persistence of all resources that are officially assigned URNs by the organization. Process of identifier assignment: Assignment is limited to the owner and those authorities that are specifically designated by the owner. DVB may designate portions of its namespace for assignment by other parties. Process of identifier resolution: The owner will develop and maintain "URN catalogues" that map all assigned URNs to Uniform Resource Locators (URLs) specifically to enable Web-based resolution of named resources. In the future an interactive online resolution system may be developed to automate this process. The owner will authorize additional resolution services as appropriate. Adolf Expires November 2007 FORMFEED[Page 3] Internet Draft DVB URN May 25, 2007 Rules for Lexical Equivalence: The "assigned US-ASCII string" is case-insensitive. Conformance with URN Syntax: No special considerations. Validation mechanism: None specified. The owner will develop and maintain URN catalogues. The presence of a URN in a catalogue indicates that it is valid. Scope: Global 3. Examples The following examples are not guaranteed to be real. They are presented for pedagogical reasons only. urn:dvb:ipdc:esg:2005 urn:dvb:cs:ZappingTypeCS:2001 4. Namespace Considerations URN assignment procedures: The individual URNs shall be assigned through the process of development of DVB standards by the Digital Video Broadcasting Project (DVB). URN resolution/delegation: The resolution and delegation shall be determined through the process of development of DVB standards by the Digital Video Broadcasting Project (DVB). Type of resources to be identified: Types of resources to be identified include XML schema definition files, classification schemes and identification systems. Type of services to be supported: Types of services supported include controlled term lookup in Adolf Expires November 2007 FORMFEED[Page 4] Internet Draft DVB URN May 25, 2007 classification schemes, resolution of ids in identification systems. 5. Community Considerations Open assignment and use of identifiers within the namespace: With on-going development of DVB standards, DVB will establish requirements for assignment and use of identifiers within the DVB namespace. Open operation of resolution servers for the namespace (server): With on-going development of DVB standards, DVB will establish requirements and seek candidates for operating resolution servers as appropriate. Creation of software that can meaningfully resolve and access services for the namespace (client): With on-going development of DVB standards, DVB members will develop software implementations of its standards. 6. Security Considerations There are no additional security considerations other than those normally associated with the use and resolution of URNs in general. 7. IANA Considerations The IANA has registered formal URN namespace XXX, to DVB within the IANA registry of URN NIDs. 8. References 8.1. Normative References [RFC2141] Moats, R., "URN Syntax", May 1997. Authors' Addresses Alexander Adolf Micronas GmbH Frankenthalerstrasse 2 D-81539 Munich GERMANY Tel: +49 89 54845 7203 Fax: +49 89 54845 7900 Adolf Expires November 2007 FORMFEED[Page 5] Internet Draft DVB URN May 25, 2007 EMail: alexander.adolf@micronas.com Peter MacAvock DVB Digital Video Broadcasting Ancienne Route 17a CH-1218 Geneva SWITZERLAND Tel: +41 22 717 2717 EMail: macavock@dvb.org Adolf Expires November 2007 FORMFEED[Page 6] Internet Draft DVB URN May 25, 2007 Full Copyright Statement Copyright (C) The IETF Trust (2007). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. 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Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. Adolf Expires November 2007 FORMFEED[Page 7]