openapi: 3.0.0

info:
  title: Ntsctsf_ASTI Service API
  version: 1.2.0-alpha.1
  description: |
    TSCTSF  Access Stratum time distribution configuration Service.  
    © 2025, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC).  
    All rights reserved.

externalDocs:
  description: >
    3GPP TS 29.565 V19.4.0; 5G System; Time Sensitive Communication and
    Time Synchronization Function Services; Stage 3.
  url: 'https://www.3gpp.org/ftp/Specs/archive/29_series/29.565/'

servers:
  - url: '{apiRoot}/ntsctsf-asti/v1'
    variables:
      apiRoot:
        default: https://example.com
        description: apiRoot as defined in clause 4.4 of 3GPP TS 29.501

security:
  - {}
  - oAuth2ClientCredentials:
    - ntsctsf-asti

paths:
  /configurations:
    post:
      summary: Creates a new Individual ASTI Configuration resource.
      operationId: ASTIConfiguration
      tags:
        - ASTI Configurations (Collection)
      requestBody:
        description: Contains the information for the creation the resource.
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AccessTimeDistributionData'
      responses:
        '201':
          description: Successful creation of the resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AccessTimeDistributionData'
          headers:
            Location:
              description: >
                Contains the URI of the created individual ASTI Configuration resource,
                according to the structure
                {apiRoot}/ntsctsf-asti/<apiVersion>/configurations/{configId}
              required: true
              schema:
                type: string
        '400':
          $ref: 'TS29571_CommonData.yaml#/components/responses/400'
        '401':
          $ref: 'TS29571_CommonData.yaml#/components/responses/401'
        '403':
          $ref: 'TS29571_CommonData.yaml#/components/responses/403'
        '404':
          $ref: 'TS29571_CommonData.yaml#/components/responses/404'
        '411':
          $ref: 'TS29571_CommonData.yaml#/components/responses/411'
        '413':
          $ref: 'TS29571_CommonData.yaml#/components/responses/413'
        '415':
          $ref: 'TS29571_CommonData.yaml#/components/responses/415'
        '429':
          $ref: 'TS29571_CommonData.yaml#/components/responses/429'
        '500':
          $ref: 'TS29571_CommonData.yaml#/components/responses/500'
        '502':
          $ref: 'TS29571_CommonData.yaml#/components/responses/502'
        '503':
          $ref: 'TS29571_CommonData.yaml#/components/responses/503'
        default:
          $ref: 'TS29571_CommonData.yaml#/components/responses/default'
      callbacks:
        astiNotification:
          '{$request.body#/astiNotifUri}':
            post:
              requestBody:
                description: Notification of an ASTI configuration change event.
                required: true
                content:
                  application/json:
                    schema:
                      $ref: '#/components/schemas/AstiConfigNotification'
              responses:
                '204':
                  description: The receipt of the notification is acknowledged.
                '307':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/307'
                '308':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/308'
                '400':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/400'
                '401':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/401'
                '403':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/403'
                '404':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/404'
                '411':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/411'
                '413':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/413'
                '415':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/415'
                '429':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/429'
                '500':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/500'
                '502':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/502'
                '503':
                  $ref: 'TS29571_CommonData.yaml#/components/responses/503'
                default:
                  $ref: 'TS29571_CommonData.yaml#/components/responses/default'


  /configurations/retrieve:
    post:
      summary: Request the status of the 5G access stratum time distribution for a list of UEs.
      operationId: RequestStatusof5GAccessStratumTimeDistribution
      tags:
        - ASTI Configurations
      requestBody:
        description: >
          Contains the information for the status of the 5G access stratum time distribution.
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/StatusRequestData'
      responses:
        '200':
          description: >
            Successful retrieval of the status of the 5G access stratum time distribution.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StatusResponseData'
        '307':
          $ref: 'TS29571_CommonData.yaml#/components/responses/307'
        '308':
          $ref: 'TS29571_CommonData.yaml#/components/responses/308'
        '400':
          $ref: 'TS29571_CommonData.yaml#/components/responses/400'
        '401':
          $ref: 'TS29571_CommonData.yaml#/components/responses/401'
        '403':
          $ref: 'TS29571_CommonData.yaml#/components/responses/403'
        '404':
          $ref: 'TS29571_CommonData.yaml#/components/responses/404'
        '411':
          $ref: 'TS29571_CommonData.yaml#/components/responses/411'
        '413':
          $ref: 'TS29571_CommonData.yaml#/components/responses/413'
        '415':
          $ref: 'TS29571_CommonData.yaml#/components/responses/415'
        '429':
          $ref: 'TS29571_CommonData.yaml#/components/responses/429'
        '500':
          $ref: 'TS29571_CommonData.yaml#/components/responses/500'
        '502':
          $ref: 'TS29571_CommonData.yaml#/components/responses/502'
        '503':
          $ref: 'TS29571_CommonData.yaml#/components/responses/503'
        default:
          $ref: 'TS29571_CommonData.yaml#/components/responses/default'

  /configurations/{configId}:
    put:
      summary: Modifies an existing Individual ASTI Configuration resource.
      operationId: ModifyIndividualASTIConfiguration
      tags:
        - Individual ASTI Configuration (Document)
      parameters:
        - name: configId
          description: String identifying an Individual ASTI Configuration.
          in: path
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AccessTimeDistributionData'
      responses:
        '200':
          description: OK. Resource was succesfully modified and representation is returned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AccessTimeDistributionData'
        '204':
          description: No Content. Resource was succesfully modified.
        '307':
          $ref: 'TS29571_CommonData.yaml#/components/responses/307'
        '308':
          $ref: 'TS29571_CommonData.yaml#/components/responses/308'
        '400':
          $ref: 'TS29571_CommonData.yaml#/components/responses/400'
        '401':
          $ref: 'TS29571_CommonData.yaml#/components/responses/401'
        '403':
          $ref: 'TS29571_CommonData.yaml#/components/responses/403'
        '404':
          $ref: 'TS29571_CommonData.yaml#/components/responses/404'
        '411':
          $ref: 'TS29571_CommonData.yaml#/components/responses/411'
        '413':
          $ref: 'TS29571_CommonData.yaml#/components/responses/413'
        '415':
          $ref: 'TS29571_CommonData.yaml#/components/responses/415'
        '429':
          $ref: 'TS29571_CommonData.yaml#/components/responses/429'
        '500':
          $ref: 'TS29571_CommonData.yaml#/components/responses/500'
        '502':
          $ref: 'TS29571_CommonData.yaml#/components/responses/502'
        '503':
          $ref: 'TS29571_CommonData.yaml#/components/responses/503'
        default:
          $ref: 'TS29571_CommonData.yaml#/components/responses/default'
    delete:
      operationId: DeleteIndividualASTIConfiguration
      summary: Delete an Individual ASTI Configuration
      tags:
        - Individual ASTI Configuration (Document)
      parameters:
        - name: configId
          in: path
          description: String identifying an Individual ASTI Configuration.
          required: true
          schema:
            type: string
      responses:
        '204':
          description: No Content. Resource was successfully deleted.
        '307':
          $ref: 'TS29571_CommonData.yaml#/components/responses/307'
        '308':
          $ref: 'TS29571_CommonData.yaml#/components/responses/308'
        '400':
          $ref: 'TS29571_CommonData.yaml#/components/responses/400'
        '401':
          $ref: 'TS29571_CommonData.yaml#/components/responses/401'
        '403':
          $ref: 'TS29571_CommonData.yaml#/components/responses/403'
        '404':
          $ref: 'TS29571_CommonData.yaml#/components/responses/404'
        '429':
          $ref: 'TS29571_CommonData.yaml#/components/responses/429'
        '500':
          $ref: 'TS29571_CommonData.yaml#/components/responses/500'
        '502':
          $ref: 'TS29571_CommonData.yaml#/components/responses/502'
        '503':
          $ref: 'TS29571_CommonData.yaml#/components/responses/503'
        default:
          $ref: 'TS29571_CommonData.yaml#/components/responses/default'

components:

  securitySchemes:
    oAuth2ClientCredentials:
      type: oauth2
      flows:
        clientCredentials:
          tokenUrl: '{nrfApiRoot}/oauth2/token'
          scopes:
            ntsctsf-asti: Access to the Ntsctsf_ASTI API

  schemas:
    AccessTimeDistributionData:
      description: >
        Contains the parameters for the creation of 5G access stratum time distribution
        configuration.
      type: object
      properties:
        supis:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Supi'
          minItems: 1
        gpsis:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Gpsi'
          minItems: 1
        interGrpId:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/GroupId'
        exterGrpId:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/ExternalGroupId'
        asTimeDisParam:
          $ref: '#/components/schemas/AfAsTimeDistributionParam'
        covReq:
          type: array
          description: >
            Identifies a list of Tracking Areas per serving network where 5GS
            Access Stratum Time Distribution parameters are allowed.
          items:
            $ref: 'TS29534_Npcf_AMPolicyAuthorization.yaml#/components/schemas/ServiceAreaCoverageInfo'
          minItems: 1
        astiNotifId:
          type: string
          description: Notification Correlation ID assigned by the NF service consumer.
        astiNotifUri:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/Uri'
        suppFeat:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/SupportedFeatures'
      required:
        - asTimeDisParam
      oneOf:
        - required: [supis]
        - required: [interGrpId]
        - required: [gpsis]
        - required: [exterGrpId]

    AfAsTimeDistributionParam:
      description: Contains the 5G access stratum time distribution parameters requested by the AF.
      type: object
      properties:
        asTimeDisEnabled:
          type: boolean
          description: >
            When this attribute is included and set to true, it indicates that the access stratum
            time distribution via Uu reference point is activated.
        timeSyncErrBdgt:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/Uinteger'
        tempValidity:
          $ref: 'TS29514_Npcf_PolicyAuthorization.yaml#/components/schemas/TemporalValidity'
        clkQltDetLvl:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/ClockQualityDetailLevel'
        clkQltAcptCri:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/ClockQualityAcceptanceCriterion'

    StatusRequestData:
      description: >
        Contains the parameters for retrieval of the status of the access stratum time distribution
        for a list of UEs.
      type: object
      properties:
        supis:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Supi'
          minItems: 1
        gpsis:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Gpsi'
          minItems: 1
      oneOf:
        - required: [supis]
        - required: [gpsis]

    StatusResponseData:
      description: >
        Contains the parameters for the status of the access stratum time distribution for a list of
        UEs.
      type: object
      properties:
        inactiveUes:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Supi'
          minItems: 1
        inactiveGpsis:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Gpsi'
          minItems: 1
        activeUes:
          type: array
          items:
            $ref: '#/components/schemas/ActiveUe'
          minItems: 1

    ActiveUe:
      description: >
        Contains the UE identifier whose status of the access stratum time distribution is active
        and the optional requested time synchronization error budget.
      type: object
      properties:
        supi:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/Supi'
        gpsi:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/Gpsi'
        timeSyncErrBdgt:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/Uinteger'
      oneOf:
        - required: [supi]
        - required: [gpsi]

    AstiConfigNotification:
      description: >
        Contains the report of a change in the 5G Access Stratum Time Distribution
        parameters applied to the UE(s).
      type: object
      properties:
        astiNotifId:
          type: string
        stateConfigs:
          type: array
          items:
            $ref: '#/components/schemas/AstiConfigStateNotification'
          minItems: 1
          description: >
            It contains the the reported event(s) and event information.
      required:
        - astiNotifId
        - stateConfigs

    AstiConfigStateNotification:
      description: >
        Contains the report of a change in the 5G Access Stratum Time Distribution
        parameters applied to a UE.
      type: object
      properties:
        supi:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/Supi'
        gpsi:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/Gpsi'
        event:
          $ref: '#/components/schemas/AstiEvent'
      required:
        - event
      oneOf:
        - required: [supi]
        - required: [gpsi]
#
# ENUMERATIONS DATA TYPES
#
    AstiEvent:
      anyOf:
      - type: string
        enum:
          - ASTI_ENABLED
          - ASTI_DISABLED
          - CLOCK_QUAL_ACCEPTABLE
          - CLOCK_QUAL_NON_ACCEPTABLE
      - type: string
        description: >
          This string provides forward-compatibility with future extensions to the enumeration
          and is not used to encode content defined in the present version of this API.
      description: |
        Represents an ASTI event to notify to the AF/NEF.  
        Possible values are:
        - ASTI_ENABLED: Access stratum time distribution via Uu reference point is activated.
        - ASTI_DISABLED: Access stratum time distribution via Uu reference point is deactivated.
        - CLOCK_QUAL_ACCEPTABLE: The UE meets the clock quality acceptance criteria.
        - CLOCK_QUAL_NON_ACCEPTABLE: The UE does not meet the clock quality acceptance criteria.