S4-260167 - AI Summary

Assignment of IVAS levels to device types

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Change Request Summary: Assignment of IVAS Levels to Device Types

CR Metadata

  • Document: TS 26.119 v19.0.0
  • CR Number: 0003 rev 1
  • Category: A (mirror corresponding to a change in an earlier release)
  • Release: Rel-19
  • Work Items: MeCAR, IVAS_Codec
  • Source: Dolby Laboratories Inc.

Reason for Change

The specification currently contains placeholder notes indicating that IVAS capability levels would be assigned to XR device types once the IVAS capability levels were defined. Since IVAS capability levels have now been specified, this CR removes the placeholder notes and provides the actual assignment of IVAS capabilities to the different XR device types.

Summary of Technical Changes

This CR updates the audio/speech capabilities support clauses for all four XR device types by:
1. Removing informative notes stating that IVAS level assignments would be refined later
2. Specifying concrete IVAS capability levels for each device type
3. Implementing the change by referencing IVAS decoding capabilities defined in TS 26.117

Detailed Technical Contributions

Device Type 1 Audio/Speech Capabilities (Clause 10.2.4)

Decoding Capabilities:
- Changed from generic "IVAS-SR" (with note) to specific "IVAS-L1" as a SHOULD requirement
- Removed placeholder note about future refinement

Encoding Capabilities:
- Maintains "IVAS-L1" as a SHOULD requirement
- Removed placeholder note about future refinement

Device Type 2 Audio/Speech Capabilities (Clause 10.3.4)

Decoding Capabilities:
- Changed from generic "IVAS-SR" (with note) to specific "IVAS-L1" as a SHOULD requirement
- Removed placeholder note about future refinement

Encoding Capabilities:
- Maintains "IVAS-L1" as a SHOULD requirement
- Removed placeholder note about future refinement

Device Type 3 Audio/Speech Capabilities (Clause 10.4.4)

Decoding Capabilities:
- Maintains generic "IVAS" as a SHOULD requirement (no level specified)
- Removed placeholder note about future refinement

Encoding Capabilities:
- Maintains generic "IVAS" as a SHOULD requirement (no level specified)
- Removed placeholder note about future refinement

Device Type 4 Audio/Speech Capabilities (Clause 10.5.4)

Decoding Capabilities:
- Maintains generic "IVAS" as a SHOULD requirement (no level specified)
- Removed placeholder note about future refinement

Encoding Capabilities:
- Maintains generic "IVAS" as a SHOULD requirement (no level specified)
- Removed placeholder note about future refinement

Related Specifications

This CR has a corresponding change in:
- TS 26.117 CR 0014 (related specification for IVAS capabilities)

Consequences if Not Approved

Without this CR, implementers would remain confused about which IVAS capability levels need to be implemented in AR/XR devices, as the specification would continue to contain only placeholder notes rather than normative requirements.

Revision History

  • Initial version (SA4#134): Implemented the change with direct referencing of IVAS codec specifications
  • Rev 1 (SA4#135): Modified implementation to reference IVAS decoding capabilities in TS 26.117 instead of direct codec specification references
Document Information
TDoc:
S4-260167
Source:
Dolby Laboratories Inc.
Type:
CR
For:
Agreement
Original Document:
View on 3GPP
Title: Assignment of IVAS levels to device types
Agenda item: 7.4
Agenda item description: Release 19 and earlier matters
Doc type: CR
For action: Agreement
Release: Rel-19
Specification: 26.119
Version: 19.0.0
Related WIs: MeCAR, IVAS_Codec
CR number: 3.0
CR revision: 1.0
CR category: A
CR: 3.0
Spec: 26.119
Contact: Stefan Bruhn
Uploaded: 2026-02-03T21:24:59.690000
Contact ID: 109223
Revised to: S4-260426
TDoc Status: revised
Is revision of: S4-251832
Reservation date: 03/02/2026 15:10:21
Agenda item sort order: 16