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module _3gpp-nr-nrm-dlbofunction {

  yang-version 1.1;

  namespace "urn:3gpp:sa5:_3gpp-nr-nrm-dlbofunction";

  prefix "dlbof3gpp";

  import _3gpp-common-subnetwork { prefix subnet3gpp; }

  import _3gpp-common-top { prefix top3gpp; }

  import _3gpp-nr-nrm-gnbcucpfunction { prefix gnbcucp3gpp; }

  import _3gpp-common-managed-element { prefix me3gpp; }

  import _3gpp-nr-nrm-nrcellcu { prefix nrcellcu3gpp; }

  organization "3GPP SA5";

  contact "https://www.3gpp.org/DynaReport/TSG-WG--S5--officials.htm?Itemid=464";

  description "Defines the YANG mapping of the DLBOFunction 

    Information Object Class (IOC) that is part of the NR Network Resource 

    Model (NRM).";

  reference "3GPP TS 28.541 5G Network Resource Model (NRM)";

  grouping DLBOFunctionGrp {

    description "Represents the DLBOFunction IOC.";

    leaf dlboControl {

      description "This attribute determines whether the LBO function is 

        enabled or disabled.";

      type boolean;

    }

    leaf maximumDeviationHoTrigger {

        description "This parameter defines the maximum allowed absolute deviation of the Handover Trigger, from the default point of operation.";

        type int32 { range "-20..20"; }

        units "0.5";

    }

    leaf minimumTimeBetweenHoTriggerChange {

        description "This parameter defines the minimum allowed time interval between two Handover Trigger change performed by MRO. This is used to control the stability and convergence of the algorithm.";

        type int32 { range "0..604800"; }

        units "1";

    }

  }

  grouping DLBOFunctionSubtree {

    list DLBOFunction {

      description "This IOC contains attributes to support the D-SON function 

        of LBO.

        In the case where multiple DLBO MOIs exist at different levels of the 

        containment tree, the DLBO MOI at the lower level overrides the DLBO

        MOIs at higher level(s) of the same containment tree.";

      reference "clause 7.1.2 in TS 28.313";

      key id;   

      uses top3gpp:Top_Grp;

      container attributes {

        uses DLBOFunctionGrp;

      }      

    }

  }

  augment "/me3gpp:ManagedElement/gnbcucp3gpp:GNBCUCPFunction/"+

      "nrcellcu3gpp:NRCellCU" {

    if-feature nrcellcu3gpp:DLBOFunction;

    uses DLBOFunctionSubtree;

  }

  augment /me3gpp:ManagedElement/gnbcucp3gpp:GNBCUCPFunction {

    if-feature gnbcucp3gpp:DLBOFunction;

    uses DLBOFunctionSubtree;

  }

  augment /me3gpp:ManagedElement {

    if-feature me3gpp:DLBOFunction;

    uses DLBOFunctionSubtree;

  }

  augment /subnet3gpp:SubNetwork {

    if-feature subnet3gpp:DLBOFunction;

    uses DLBOFunctionSubtree;

  }

}