ISO/IEC 21000-15:2006

Overview

ISO/IEC 21000-15:2006 - part of the MPEG‑21 Multimedia Framework - defines a standardized mechanism for Event Reporting about the manipulation and usage of Digital Items and the state or capacity of Peers. The standard specifies how to create Event Report Requests (ER‑R) embedded in Digital Items and how Event Reports (ER) are generated and exchanged between Peers when specified conditions occur. It includes syntax, semantics and an XML Schema for interoperable implementations.

Key topics and requirements

• Event Report Requests (ER‑R):
  • Describe what events to monitor, when to generate reports and who should receive them.
  • Main components: Event Report Request Descriptor, Event Condition Descriptor (conditions tied to a Peer or a Digital Item), and Event Report Specification (what information the ER must contain).
• Event Reports (ER):
  • Generated by a Peer when ER‑R conditions are met; structured according to the Event Report Specification and delivered to specified recipients.
  • May embed further ER‑Rs to enable automated forwarding or acknowledgments.
• Data and format rules:
  • Syntax and semantics are defined; an XML Schema (Annex A) and specific data types (e.g., time, PeerId, UserId) are provided.
  • Namespace conventions (urn:mpeg:mpeg21:2005:01-ERL-NS) and XML usage are specified for interoperability.
• Scope constraints:
  • Focuses on reporting between Peers; it does not standardize internal reporting within a Peer.

Applications and who uses it

ISO/IEC 21000-15 is practical for systems that require standardized, automated reporting of multimedia usage and peer status:

• Content creators and rights holders - track rendering, playback and usage for royalty accounting or analytics.
• Service providers and distributors - monitor delivery, quality of service and device capabilities across a network of Peers.
• Device and application developers - implement interoperable monitoring logic in players, servers and middleware that process MPEG‑21 Digital Items.
• DRM, analytics and content-adaptation vendors - integrate Event Reporting to trigger business workflows (billing, reporting, adaptation).
• System integrators - automate report exchanges (forwarding, acknowledgments) in distributed multimedia workflows.

Practical examples include reporting playback events for royalty management, notifying a content owner of failed delivery attempts, or sharing Peer capacity/state to optimize adaptive streaming or processing.

Related standards

• ISO/IEC 21000 (MPEG‑21) core parts: Part 1 (Vision), Part 2 (Digital Item Declaration), Part 10 (Digital Item Processing), Part 9 (File Format), etc.
• Normative references used: IETF RFC 3986 (URI syntax) and W3C XML Schema specifications for structure and datatypes.

Keywords: ISO/IEC 21000-15, MPEG-21, Event Reporting, Event Report Request, Event Report, Digital Item, Peer, XML Schema, multimedia monitoring.