When TUSC1 This is a bitmap describing the subchannels allocated to the Subchannels Bitmap Permutation is Used segment in the DL, when using the TUSC1 permutation. TUSC2 Permutation Active When TUSC2 This is a bitmap describing the subchannels allocated to the Subchannels Bitmap Permutation is Used segment in the DL, when using the TUSC2 permutation. Hysteresis Margin Always Hysteresis margin is used by the MS to include a neighbor BS to a list of possible target BSs. When the CINR of a neighbor BS is larger than the sum of the CINR of the current serving BS and the hysteresis margin for the time-to-trigger duration, then the neighbor BS is included in the list of possible target BSs in MOB_MSHO-REQ. It is the unit of dB and applicable only for handover. Time-To-Trigger Duration Always Time-to-trigger duration is the time, measured in number of frames, used by the MS to decide to select a neighbor BS as a possible target BS. It is applicable only for handover. Trigger Always The Trigger is a compound TLV value that indicates trigger metrics. The trigger in this encoding is defined for serving BS or commonly applied to neighbor BSs. Noise + Interference Always The operator will define the N + / (Noise + Interference) based on the related RF system design calculations. Downlink Burst Profiles for When Multiple FEC The DL burst profile is encoded with a type of 1, an 8-bit length, Multiple FEC Types Types are Used and a 4-bit DIUC. The DIUC field is associated with the DL burst profile and thresholds. The DIUC value is used in the DL-MAP message to specify the burst profile to be used for a specific DL burst. MBS Zone Identifier List When MBS is Used This parameter includes all MBS zone identifiers (i.e., in X MBS zone identifier) with which BS is associated. An MBS zone identifier is 1 byte long. BS Restart Count Always The value is incremented by one whenever BS restarts. CDD STC Descriptor When CDD is Used This parameter may be transmitted to specify CDD parameters to the MS. It applies to zones with 2 logical an