module o-ran-wg4-features {
  yang-version 1.1;
  namespace "urn:o-ran:wg4feat:1.0";
  prefix "o-ran-feat";


  organization "O-RAN Alliance";

  contact
    "www.o-ran.org";

  description
    "This module defines the set of re-usable type definitions for WG4 specific
    features.

    Copyright 2024 the O-RAN Alliance.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
    this list of conditions and the above disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
    this list of conditions and the above disclaimer in the documentation
    and/or other materials provided with the distribution.
    * Neither the Members of the O-RAN Alliance nor the names of its
    contributors may be used to endorse or promote products derived from
    this software without specific prior written permission.";

  revision "2024-08-12" {
    description
      "version 16.0.0
      new features:

      1) PRG-SIZE-SUPP-SE-21-WITH-ST6
      2) PRG-SIZE-SUPP-SE-21-WITH-ST5
      3) USER-GROUP-OPTIMIZATION
      4) BF-DELAY-PROFILE
      5) DMRS-BF-EQ
      6) DMRS-BF-NEQ
      7) RRM-MEAS-REPORTING
      8) USER-GROUP-SELF-ASSEMBLY
      9) UEID-PERSISTENCE
      10) CONTINUITY-BLOCK-SIZE
      11) SELECTED-BF-METHOD-CONFIGURATION
      12) DMRS-BF-NEQ-UNALTERED-FREQ-OFFSET
      13) DMRS-BF-NEQ-UNALTERED-TAE
      14) SE10-MEMBER-CANDIDATE-LIST
      15) MACSEC-BYPASS-POLICY
      16) SE27-ODU-CONTROLLED-DIMENSIONALITY-REDUCTION
      17) SE20-MULTI-SD-PUNC-PATTERN-SUPPORT
      18) CONFIGURABLE-VSWR-THRESHOLDS
      19) CLIENT-AUTH-SSH-PUBLIC-KEY
      20) POINT-A-OFFSET-TO-ABSOLUTE-FREQUENCY-CENTER";

    reference "ORAN-WG4.M.0-v16.00";
  }

  revision "2024-04-15" {
    description
      "version 15.0.0
      new features:

      1) PRG-SIZE-SUPP-SE-21-WITH-ST6
      2) PRG-SIZE-SUPP-SE-21-WITH-ST5
      3) BF-DELAY-PROFILE
      4) USER-GROUP-OPTIMIZATION
      5) MULTIPLE-BEAMID-TABLES-SUPPORTED
      6) PER-PORT-PTP-CONFIG
      7) PER-PORT-SYNCE-CONFIG
      8) MPLANE-TRX-CONTROL
      9) PER-INT-TCP-MSS
      10) DEEP-HIBERNATE";

    reference "ORAN-WG4.M.0-v15.00";
  }

  revision "2023-12-11" {
    description
      "version 14.0.0
      new features:

      1) SE23-PRB-BLOCK-MODE-SUPPORT
      2) MPLANE-DATA-LAYER-CONTROL
      3) SHARED-CELL-STATS";

    reference "ORAN-WG4.M.0-v14.00";
  }

  revision "2023-08-14" {
    description
      "version 13.0.0
      new features:

      1) CALL-HOME-REACTIVATION-SUPPORTED
      2) SEQ-ID-CHECKING-CONFIGURABLE
      3) TRX-CONTROL
      4) ADVANCED-SLEEP-MODE";

    reference "ORAN-WG4.M.0-v13.00";
  }

  revision "2023-04-10" {
    description
      "version 12.0.0
      new features:

      1) EXTENDED-PRACH-CONFIGURATION
      2) NON-SCHEDULED-UEID
      3) SE11-WITH-CONTINUITY-BIT-SUPPORT
      4) UPLANE-MESSAGE-PROCESSING-LIMITS";

    reference "ORAN-WG4.M.0-v12.00";
  }

  revision "2022-12-05" {
    description
      "version 11.0.0
      new features:

      1) UPLANE-ONLY-DL-MODE
      2) SUPERVISION-WITH-SESSION-ID
      3) INTEGRITY-CHECK-AT-SW-DOWNLOAD
      4) ST4-SLOT-CONFIG-MSG-SUPPORT";

    reference "ORAN-WG4.M.0-v11.00";
  }


  revision "2022-08-15" {
    description
      "version 10.0.0
      new features:
      1) SHARED-ORU-MULTI-ODU
      2) SHARED-ORU-MULTI-OPERATOR";
    reference "ORAN-WG4.M.0-v10.00";
  }

  revision "2021-12-01" {
    description
      "version 8.0.0
      new features:
      1) Typographical corrections in descriptions
      2) Add new features:
         BEAM-UPDATE-CONTENTION-CONTROL
         MULTIPLE-SCS-IN-EAXC
         ENHANCED-T-COMBINE
         CHANNEL-INFORMATION-COMPRESSION
         CHANNEL-INFORMATION-PRB-GROUP
         MULTIPLE-TRANSPORT-SESSION-TYPE";
    reference "ORAN-WG4.M.0-v08.00";
  }

  revision "2021-07-26" {
    description
      "version 7.0.0

      new features:
      1) EXT-ANT-DELAY-CONTRO
      2) CPLANE-MESSAGE-PROCESSING-LIMITS";

    reference "ORAN-WG4.M.0-v07.00";
  }

  revision "2021-03-22" {
    description
      "version 6.0.0

      1) Features added to handle updated transmission window control:
      STATIC-TRANSMISSION-WINDOW-CONTROL
      DYNAMIC-TRANSMISSION-WINDOW-CONTROL
      UNIFORMLY-DISTRIBUTED-TRANSMISSION
      ORDERED-TRANSMISSION
      INDEPENDENT-TRANSMISSION-WINDOW-CONTROL
      ";

    reference "ORAN-WG4.M.0-v06.00";
  }

  revision "2020-12-10" {
    description
      "version 5.0.0

      1) initial version.";

    reference "ORAN-WG4.M.0-v05.00";
  }

  feature NON-PERSISTENT-MPLANE {
    description
      "Indicates that the Radio Unit supports the optional
      capability to improve the operation with a SMO using a non-
      persistent NETCONF session.";
  }

  feature STATIC-TRANSMISSION-WINDOW-CONTROL {
    description
      "O-RU supports U-plane transmission window control (scheduled transmission
       and optionally uniformly distributed transmission) configuration over M-plane";
  }

  feature DYNAMIC-TRANSMISSION-WINDOW-CONTROL {
    description
      "O-RU supports U-plane transmission window control (scheduled transmission
       and optionally uniformly distributed transmission) configuration over C-plane";
  }

  feature UNIFORMLY-DISTRIBUTED-TRANSMISSION {
    if-feature "STATIC-TRANSMISSION-WINDOW-CONTROL or DYNAMIC-TRANSMISSION-WINDOW-CONTROL";
    description
      "O-RU supports transmission of UL U-plane messages distributed uniformly over transmission window.";
  }

  feature ORDERED-TRANSMISSION {
    description
      "O-RU supports ordered transmission";
  }

  feature INDEPENDENT-TRANSMISSION-WINDOW-CONTROL {
    if-feature "STATIC-TRANSMISSION-WINDOW-CONTROL or DYNAMIC-TRANSMISSION-WINDOW-CONTROL";
    description
      "O-RU supports independent U-plane transmission window per endpoint.

       If this feature is not supported then for all endpoints with transmission control enabled
       (see u-plane-transmission-control/transmission-window-control) must be configured for transmission
       window offsets and window sizes that coincide for each symbol.

       If INDEPENDENT-TRANSMISSION-WINDOW-CONTROL feature is not supported then all endpoints with
       transmission control enabled that handle the same carrier type and SCS must be configured
       (via M-plane or C-plane) with parameter values resulting in transmission windows that coincide
       between the endpoints. That is, for every symbol N, the effective transmission window for symbol N
       must be shared (start at the same time and end at the same time) by all the endpoints handling
       same carrier type and SCS. This restriction applies only to endpoints that have transmission
       control enabled.

       If INDEPENDENT-TRANSMISSION-WINDOW-CONTROL feature is supported then restriction described
       above does not apply and a different transmission window (window offset and window size)
       can be used for every endpoint capable of transmission window control.";
  }

  feature EXT-ANT-DELAY-CONTROL {
    description
      "This feature indicates that the O-RU supports external antenna delay control";
  }

  feature CPLANE-MESSAGE-PROCESSING-LIMITS {
    description
      "Feature to indicate O-RU limitation of C-Plane message processing. Refer CUS-Plane specification
      section 'O-RU C-Plane message limits' for more details on this feature.";
  }

  feature CHANNEL-INFORMATION-COMPRESSION {
    description
      "This feature indicates that the O-RU supports channel information compression.";
  }

  feature CHANNEL-INFORMATION-PRB-GROUP {
    description
      "Feature to indicate O-RU supports receiving and processing channel
       information (e.g., ST6) with PRB group size greater than one PRB";
  }

  feature BEAM-UPDATE-CONTENTION-CONTROL {
    description
      "Feature to indicate O-RU requirements for beam weight update for a given beamId, to avoid beam update contentions.
      Refer CUS-Plane specification section 'Weight-based dynamic beamforming' for more details on this feature.";
  }

  feature MULTIPLE-SCS-IN-EAXC {
    description
      "Presence of feature indicates that FHM supports combining for multiple SCS
      or multiple c-plane-types/frameStructure in a single eAxC-id in UL direction.";
  }

  feature MULTIPLE-TRANSPORT-SESSION-TYPE {
    description
      "Feature to indicate O-RU supports to be configured with multiple transport-session-type
      (Ethernet, ALIASMAC, UDP/IP)";
  }

  feature ENHANCED-T-COMBINE {
      description
      "Presence of feature indicates that FHM/Cascade O-RU can support t-combine-net and tx-duration";
  }

  feature SHARED-ORU-MULTI-OPERATOR {
    description
      "Feature to indicate the O-RU supports shared operation with one or more shared
      resource operators (i.e., multiple MNOs) and implements enhanced NACM privileges per shared
      resource operator.

      Note, there is no linkage or dependency between the SHARED-CELL feature and the SHARED-ORU feature.";
  }

  feature SHARED-ORU-MULTI-ODU {
    description
      "Feature to indicate the O-RU supports independent supervision qualified based on odu-id, where
      loss of supervision triggers selective carrier deactivation of carriers associated with odu-id.";
  }

  feature INTEGRITY-CHECK-AT-SW-DOWNLOAD {
   description "Feature indicates that radio unit support performing integrity check at software download";
  }

   feature SUPERVISION-WITH-SESSION-ID {
    description
      "O-RUs supporting this feature reuse the session-id generated for each NETCONF
      session in supervision-notification. The session-id is defined in RFC 6241.
      For these O-RUs, the O-RU controller participating in the NETCONF supervision
      procedure can subscribe to supervision-notification notification events,
      filtering for the supervision-notification/session-id matching
      session-id in the Hello Message received from NETCONF Server earlier.";
  }

  feature UPLANE-ONLY-DL-MODE {
    description
      "Presence of feature indicates that O-RU supports U-Plane-only DL mode.";
  }

  feature ST4-SLOT-CONFIG-MSG-SUPPORT {
    description
    "Feature to indicate O-RU support for Section Type 4 slot configuration message";
  }
  feature NON-SCHEDULED-UEID {
    description
    "Feature to indicate that O-RU supports 'non-scheduled-ueid' to indicate the ports in the section which are not scheduled for a given eAxcid";
  }

  feature EXTENDED-PRACH-CONFIGURATION {
    description
      "Presence of the feature indicates that O-RU supports extended number of PRACH patterns and occasions
      provided by means of static PRACH.";
  }

  feature SE11-WITH-CONTINUITY-BIT-SUPPORT {
    description
    "Feature to indicate O-RU support for handling 'continuity' bit information in Section Extension 11";
  }

  feature UPLANE-MESSAGE-PROCESSING-LIMITS {
    description
    "Feature to indicate O-RU limitation of U-Plane message processing. Refer M-Plane specification
    clause 15.10 for more details on this feature.";
  }

  feature CALL-HOME-REACTIVATION-SUPPORTED {
    description
    "Presence of the feature indicates that O-RU supports re-activation of timed out call home flows.";
  }

  feature SEQ-ID-CHECKING-CONFIGURABLE {
    description
    "Feature to indicate O-RU supports configuration of sequence number checking functionality.";
  }

  feature TRX-CONTROL {
    description
    "Feature to indicate O-RU support for handling RF channel reconfiguration by TRX Control.";
  }

  feature ADVANCED-SLEEP-MODE {
    description
    "Feature to indicate O-RU support for handling Advanced Sleep Modes.";
  }

  feature SE23-PRB-BLOCK-MODE-SUPPORT {
    description
    "Presence of the feature indicates that O-RU supports PRB-BLOCK mode of SE-23 as defined in CUS-Plane
    specification Clause 7.7.23.1.";
  }

  feature MPLANE-DATA-LAYER-CONTROL {
    description
    "Feature to indicate O-RU support for M-Plane based data layer control energy saving feature.";
  }

  feature SHARED-CELL-STATS {
    description
    "Feature to indicate FHM/Cascade O-RU support for shared-cell-stats.";
  }

  feature PER-PORT-PTP-CONFIG {
    description
      "This feature indicates that the equipment supports per-port PTP configuration functionality";
  }

  feature PER-PORT-SYNCE-CONFIG {
    description
      "This feature indicates that the equipment supports per-port SYNCE configuration functionality";
  }

  feature PER-INT-TCP-MSS {
    description
      "This feature indicates that the RU supports a per-interfacece MSS
      configuration for TCP.";
  }

  feature MULTIPLE-BEAMID-TABLES-SUPPORTED {
    description
    "Feature to indicate O-RU support for multiple beamId tables.";
  }

  feature MPLANE-TRX-CONTROL {
    description
    "Feature to indicate O-RU support for M-plane based TRX control for Network Energy Saving.";
  }

  feature DEEP-HIBERNATE {
    description
      "Feature to indicate O-RU support for M-Plane based deep-hibernate energy saving feature.";
  }

  feature PRG-SIZE-SUPP-SE-21-WITH-ST6 {
    description
    "Feature to indicate O-RU support for receiving prgSize information when Section Extension 21 is
    sent with Section Type 6.";
  }

  feature PRG-SIZE-SUPP-SE-21-WITH-ST5 {
    description
    "Feature to indicate O-RU support for receiving prgSize information when Section Extension 21 is
    sent with Section Type 5.";
  }

  feature USER-GROUP-OPTIMIZATION {
    description
      "Feature to indicate O-DU requirement to send all layers for a given user group i.e., UEs with same
      time-frequency allocation using single C-Plane section description.";
  }

  feature BF-DELAY-PROFILE {
    description
    "Feature to indicate O-RU support for beamforming list and delay profiles(s) per endpoint.";
  }

  feature DMRS-BF-EQ {
    description
    "DMRS beamforming with equalization supported. See CUS-plane clause 12.6";
  }

  feature DMRS-BF-NEQ {
    description
    "DMRS beamforming without equalization supported. See CUS-plane clause 12.6";
  }

  feature RRM-MEAS-REPORTING {
    description
    "Reporting of RRM measurmenets supported. See CUS-plane clause 12.6.1.6";
  }

  feature USER-GROUP-SELF-ASSEMBLY {
    description
    "Feature to indicate user group self assembly. See CUS-Plane clause 7.7.24.7.";
  }

  feature UEID-PERSISTENCE {
    description
    "Feature to indicate if ueId persistance over multiple slots is supported. See CUS-Plane clause 7.7.24.10.";
  }

  feature CONTINUITY-BLOCK-SIZE {
    description
    "The O-RUs capability for reporting one or more values of continuity block sizes. See CUS-plane clause 12.6.1.2.1";
  }

  feature SELECTED-BF-METHOD-CONFIGURATION {
    description
    "Feature to indicate O-RU support for configuration of a subset of beamforming methods from an
    endpoint-bf-profile-group that shall be used by a specific endpoint.";
  }

  feature DMRS-BF-NEQ-UNALTERED-FREQ-OFFSET  {
    description
    "Feature to indicate that DMRS-BF-NEQ beamforming performed by the O-RU does not change frequency offset,
    hence it can be measured by the O-DU.";
  }

  feature DMRS-BF-NEQ-UNALTERED-TAE {
    description
    "Feature to indicate that DMRS-BF-NEQ beamforming performed by the O-RU does not change TAE,
    hence TAE can be measured by the O-DU. Refer CUS specification clause 9.2.2.1 for details.";
  }

  feature SE10-MEMBER-CANDIDATE-LIST {
    description
    "Reporting of member-list of endpoints for SE-10 supporting endpoint. See CUS-plane clause 7.7.10.1";
  }

  feature MACSEC-BYPASS-POLICY {
    description
      "O-RU supports MACsec bypass policy";
  }

  feature SE27-ODU-CONTROLLED-DIMENSIONALITY-REDUCTION {
    description
    "Presence of the feature indicates that O-RU supports O-DU controlled dimensionality reduction using SE27 as defined in CUS-Plane
    specification Clause 7.7.27.";
  }

  feature SE20-MULTI-SD-PUNC-PATTERN-SUPPORT {
    description
    "Feature to indicate O-RU support for handling multiple section description puncturing pattern in
    Section Extension 20 per endpoint.";
  }

  feature CONFIGURABLE-VSWR-THRESHOLDS {
    description
    "Feature to indicate O-RU support for configurable VSWR thresholds.";
  }

  feature CLIENT-AUTH-SSH-PUBLIC-KEY {
    description
    "O-RU supports an optional feature to authenticate SSH client via SSHPUBLICKEY method.";
  }

  feature POINT-A-OFFSET-TO-ABSOLUTE-FREQUENCY-CENTER {
    description
    "Feature to indicate if leaf rx-array-carriers/point-a-offset-to-absolute-frequency-center is supported. See CUS-Plane clause 7.7.24.1.";
  }
}