3GPP TR 26.510 Change Request - Solution #12: Media Application Service Energy Metrics Collection and Reporting

Change Request Overview

CR Number: 0018 rev 2
Version: 19.0.0
Work Item: FS_Energy_Ph2_MED
Category: B (addition of feature)
Release: Rel-20

This CR proposes Solution #12 for Key Issue #1 (energy-related collection) and Key Issue #4 (exposure to authorized 3rd parties) for Media Application Service Energy Metrics.

Main Technical Contributions

Solution Positioning and Architecture Approach

This Candidate Solution builds upon Solution #5 (clause 7.6.2.4) for the architecture of energy-related information collection and exposure. Key differentiators:

• Extends existing Metrics Reporting mechanisms from Media AS (reference point E3) and EIF (reference point E12)
• Enables collection and reporting of Media Application Service Energy Metrics
• Supports conveying information to:
• Media Application Provider (via M1)
• UE (via E5)
• Data Collection AF for exposure to authorized event consumers (optional)

Architecture Mapping (Clause 7.13.2.2)

The solution instantiates the reference architecture with the following key functions:

Energy Information AF (instantiated in Media AF)

• Receives and validates Media Application Service Energy Metrics Reporting Configurations from Media AF
• Subscribes to and consumes NF Energy Information from EIF with required granularities (UE, PDU session, QoS flow)
• Subscribes to and consumes AS Energy Information from Application Server
• Collects energy-related information from Media AS and EIF
• Processes information and creates Media Application Service Energy metrics reports
• Publishes reports to Media Application Provider after privacy-preserving post-processing
• Exposes reports to Energy Information Collector in UE

Data Collection AF (instantiated in Media AF)

• Receives Media Application Service Energy metrics reports from Energy Information AF
• Publishes energy-related information to Event Consumer AF subscribers as exposed events

Energy Information Collector (instantiated in Media Session Handler)

• Acquires Energy Information collection configuration from Energy Information AF via E5
• Subscribes to and consumes Network Energy Information metrics reports from Energy Information AF
• Collects UE Energy Information from Media Access Function via Media Session Handler at M11

Reference Points

The solution defines/utilizes the following reference points:

• M1: Media Application Provider provisions Media Application Service Energy Metrics Reporting Configuration to Media AF
• E12: EIF provides energy-related information reports to Energy Information AF
• E3: Media AS transmits Media Application Service Energy metrics reports to Energy Information AF (after obtaining configuration)
• E5: UE Energy Information Collector obtains configuration and transmits/receives reports to/from Energy Information AF
• E4: Data Collection AF subscribes to and receives Network Energy Information from Energy Information AF
• M3: Media AS retrieves Service Access Information including Energy Information AF endpoint address
• M5: Media Session Handler retrieves Service Access Information including Energy Information Collector endpoint address
• M6: Media-aware Application receives Media Application Service Energy Metrics notifications from Energy Information Collector
• M8: Media Application Provider receives energy-related information from Media-aware Application (beyond 3GPP scope)
• R6: Data Collection AF exposes Media Application Service Energy Metrics events to Event Consumer AF

Energy-Related Information Reports (Clause 7.13.2.4)

Media AS Energy Report (7.13.2.4.1)

Generated periodically by Application Server at E3, includes:
- Sample timestamp and duration
- Application Server instance identification
- Metrics reporting configuration ID
- Application Service location objects with contribution/renewable ratios
- Media delivery session identifier
- Session energy consumption and carbon emission
- Downlink/uplink data volumes (per session and global)
- Global energy consumption (uplink/downlink)
- Media component energy objects (per MIME type with energy, carbon, data volumes)

Processed EIF Energy Report (7.13.2.4.2)

Generated by Energy Information AF describing Mobile Network energy consumption:
- Sample timestamp and duration
- Metrics reporting configuration ID
- Media delivery session identifier
- Session slice energy and carbon emission
- Session energy and carbon emission
- Media component energy objects
- RAN energy and carbon emission
- Core Network (UPF) energy and carbon emission
- RAN and Core Network renewable ratios

Aggregated Mobile Network and Media AS Energy Report (7.13.2.4.3)

Generated by Energy Information AF, aggregates information from mobile network and Media AS:
- Report timestamp
- Aggregated information based on metrics reporting scheme, sample mode, and reporting scope

Aggregated UE and Energy Information AF Energy Report (7.13.2.4.4)

Generated by Energy Information Collector describing UE, Mobile network, and AS energy consumption:
- Report timestamp
- Aggregated Mobile Network and Media AS Energy Report
- Sample timestamp and duration
- Media delivery session identifier
- Session energy and carbon emission
- Network access energy ratio
- Non-display and display playback energy ratios
- Media component energy objects with UE-specific metrics

Media Application Service Energy Metrics Event (7.13.2.4.5)

Collection of metrics reports exposed by Data Collection AF to subscribing event consumers on per-UE basis (details FFS)

Media Application Provider Energy Metrics Report (7.13.2.4.6)

Generated by Energy Information AF on per-UE basis for Media Application Provider (details FFS)

Procedures (Clause 7.13.3)

The solution defines comprehensive procedures including:

1. Provisioning Phase:
2. Media AF provisioned with Energy Metrics Reporting configurations

3. Energy Information AF subscribes to EIF for Core Network energy information

4. Session Establishment:

5. Service Announcement and Content Discovery
6. Media delivery session initiation
7. Media processing pipeline setup

8. Configuration retrieval by Media AS and Energy Information Collector

9. Metrics Collection Loop:

10. Periodic metrics collection from Media AS, EIF, and Media Access Function
11. Report generation aligned with configured schemes
12. Information processing and aggregation by Energy Information AF

13. Exposure to UE, Media Application Provider, and optionally Data Collection AF

14. Optional Exposure:

15. To Media-aware Application via M6
16. To Media Application Provider via M8
17. To Event Consumer AF via R6 (through Data Collection AF)

Solution #5 Based Procedures (New Section 7.13.3)

Additional detailed procedures mapping this solution on top of Solution #5:
- Energy Information Collection provisioning
- Media delivery session initiation with energy collection
- Periodic energy information reporting during media streaming
- Service Operation Point selection based on energy information
- Dynamic subscription updates based on Service Data Flow changes

Gap Analysis (Clause 7.13.4)

Identifies that Release-19 Metrics Reporting Configuration:
- Provides generic metrics reporting framework
- Does not enable standardized, entity-aware provisioning of energy metrics reporting

Proposes requirements for:
- Media AF to support Media Application Service Energy Metrics Reporting Configuration
- Energy Information AF to collect, process, and report energy information from multiple sources
- Energy Information Collector to fetch, process, and propagate energy metrics
- Defining energy metrics reports and events at new reference points

Proposed Normative Changes (Clause 7.13.5)

Scope for stage 3 specifications:

• TS 26.501: Addition as profiling/extension of Solution #5, including procedures and report semantics
• TS 26.510: Extension of Metrics Reporting Configuration and procedures for energy metrics schemes
• TS 26.512: Extension of M1 and Service Access Information APIs for energy metrics configurations
• TS 26.531: Extend Data Collection AF to support Media Application Service Energy Metrics as subscribable data set; define events at R6

Solution Summary (Clause 7.13.6)

The Candidate Solution:
- Describes how energy-related information is collected, estimated, and exposed by 5G System
- Supports network optimization, energy-aware service adaptation, user empowerment, and energy/carbon-emission attribution
- Reuses and extends existing 5G Metrics Reporting mechanism with energy-related metrics
- Enables collection and exposure of carbon intensity, energy consumption, renewable source ratio, and contribution ratio for Media Application Services
- Builds on Solution #5 while keeping M1 provisioning mechanism and adapting procedures for energy information collection from AS and Network

Key Technical Decisions

• Maintains backward compatibility by using M1 for provisioning (use of E1 is FFS)
• Leverages existing Metrics Reporting framework from Release-19
• Introduces new energy-specific report types with detailed parameter definitions
• Supports multiple granularities (UE, PDU session, QoS flow, media component)
• Includes privacy-preserving post-processing before exposure
• Enables both push and pull models for energy information delivery
• Supports optional exposure to third-party event consumers via Data Collection AF