Summary of 3GPP Technical Document S4-260074

Document Overview

This document presents revision 0.4 of the Work Plan for the Study Item "Study on Media Energy Consumption Exposure and Evaluation Framework phase 2" (FS_Energy_ph2_MED). The study was approved at SA4#132 (S4-251182) and SA#108 (SP-250636).

Background and Motivation

The study addresses incomplete work from TR 26.942 v2.0.0 due to dependencies on other 3GPP groups. The phase 2 study aims to:
- Incorporate new information from completed 3GPP work
- Address key issues identified but not resolved in phase 1
- Propose new potential solutions

Study Objectives

1. Release 20 Requirements from TS 22.261

The study addresses new Rel-20 requirements in the media delivery context:

Clause 6.15a.2 - Energy-related information as service criterion:
- Media delivery performance degradation (QoS adjustment, bit rate modification, deferring Background Data Transfers) in response to network energy supply mix changes or energy rationing
- Per-UE energy saving actions based on subscription policies, including blocking media delivery
- Mechanisms to assist Media Application Providers in identifying UEs for performance degradation and energy saving actions
- All subject to operator policy, regulatory requirements, and user consent

Clause 6.15a.5 - Energy-related information exposure:
- Exposure to UEs and authorized third parties over specific time periods
- Network energy consumption and equivalent CO2e emissions for overall media delivery service and individual application data flows
- Subject to operator policy, regulatory requirements, and user consent

2. Update Existing Solutions

Update or develop existing potential solutions incorporating new elements from TS 23.501, TS 23.502, and TS 23.503, including:
- Energy Information Function (EIF)
- Efficient energy use mechanisms
- Energy saving items

3. New Potential Solutions

Propose solutions for key issues on:
- Energy-related monitoring and measurement during media consumption
- Evaluation frameworks without identified normative work

4. New Key Issues from Phase 1

a. Energy-related configuration by Media Application Service Provider:
- How ASPs can configure energy-related information collection and exposure

b. AS Energy Management:
- How 5GMS AS (and RTC System equivalent functions) react to energy-related information from the network via Energy Information AF instantiated in 5GMS AF and/or Energy Information Collector

c. Client Energy Management:
- How 5GMS Client (and RTC System equivalent functions) react to network-shared energy-related information
- Leverage existing QoS optimization mechanisms in RTC/5GMS for energy efficiency optimization

Timeline Adjustments

Original Plan: Completion by March 2026 (SA#111)

Revised Plan: Completion postponed to June 2026 (SA#112)

Rationale:
- Original timeline too ambitious for two SA4 meetings
- Additional two SA4 meetings provided
- Addresses Rel-20 SA1 requirements while respecting Rel-20 Stage 2 freeze
- Stage 2 addressed in single meeting, Stage 3 in two meetings

Key Decisions to Enable Revised Timeline:
- No new candidate solutions accepted after SA4#135
- Consensus on Stage 2 draft WID during SA4#135-bis e-meeting
- Begin Stage 2 Technical Specification work before WID approval at SA#112 by submitting discussion papers to SA4#135-bis and/or SA4#136
- Early drafts of TS 26.nnn V0.0.1/V0.0.2 based on agreed baseline of Solution 5

Detailed Work Plan

SA4#132 (May 2025, Fukuoka, JP)

• Agreed New Study Item FS_Energy_ph2_MED (S4-251182)

SA#108 (June 2025, Prague, CZ)

• Approved New Study Item FS_Energy_ph2_MED (SP-250636)

SA4#133-e (July 2025, online)

• No actions

SA4 MBS SWG AHG Meeting (Sep 2025, Paris, FR)

• Address Rel-20 TS 22.261 requirements in media context (existing/new key issues)
• Describe new key issues: ASP configuration, AS energy management, client energy management

SA#109 (Sep 2025, China)

• No actions

SA4 MBS SWG AHG Telco (Oct 2025)

• Progress work on key issues
• Update/develop potential solutions on existing key issues
• Initiate work on new potential solutions for new key issues

SA4#134 (Nov 2025, Dallas, US)

• Finalize work on key issues
• Update/develop potential solutions on existing key issues
• Progress work on new potential solutions
• Communicate with other 3GPP WGs and external organizations

SA#110 (Dec 2025, Baltimore, US)

• No actions

SA4 MBS SWG AHG Telcos (Dec 2025, Jan 2026)

• Update/develop potential solutions on existing key issues
• Progress work on new potential solutions

SA4#135 (Feb 2026, Goa, IN)

• Finalize work on potential solutions
• Describe/improve potential normative work
• Agree CRs to TR 26.942
• Communicate with other 3GPP WGs and external organizations

SA#111 (Mar 2026, Fukuoka, JP)

• ~~Approve CRs to TR 26.942~~ (changed to "No actions")

SA4 MBS SWG AHG Telcos (Mar 2026)

• Finalize work on potential solutions submitted before SA4#135
• Progress on phase 2 modifications in conclusions
• Progress on/describe or improve potential normative work and further study

SA4#135-bis e-meeting (Apr 2026, online)

• Add potential solutions agreed in merged CR
• Progress on/finalize conclusions and recommendations including potential normative work and further study
• Finalize related Stage 2 draft WID
• Initiate early draft of TS 26.nnn
• Communicate with other 3GPP WGs and external organizations

SA4#136 (May 2026, Montreal, CA)

• Add conclusions and recommendations including potential normative work and further study in merged CR
• Finalize recommendations and conclusions
• Agree on merged CRs to TR 26.942
• Agree Stage 2 WID
• Progress on early drafts of TS 26.nnn
• Communicate with other 3GPP WGs and external organizations

SA#112 (June 2026, Singapore, SG)

• Approve merged CRs to TR 26.942

Proposal

The document proposes the above Work Plan for SA4 team consideration.