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Transport aspects 2

X.6.7.3 Minimum Mds for DTA (DTA_min_Mds)

The control parameter DTA_min_Mds provides the minimum number of downstream symbol periods Mds in
a TDD frame the DRA is allowed to request. DTA_min_Mds shall be greater than or equal to the minimum
valid value for Mds specified in clause X.6.3.

The control parameter DTA_min_Mds shall be set to the same value as the DPU-MIB configuration
parameter DTA_MIN_Mds.

X.6.7.4 Maximum Mds for DTA (DTA_max_Mds)
The control parameter DTA_max_Mds provides the maximum number of downstream symbol periods Mds in
a TDD frame the DRA is allowed to request using a DTA update procedure. DTA_max_Mds shall be less than
or equal to the maximum valid value for Mds specified in clause X.6.3.
The control parameter DTA_max_Mds shall be set to the same value as the DPU-MIB configuration
parameter DTA_MAX_Mds.

X.6.7.5 Maximum net data rate for DTA (DTA_NDR_max)
The control parameter DTA_NDR_max provides the value of the maximum NDR if DTA operation is enabled,
and is defined for downstream and upstream direction separately. The bit loading for the downstream shall
be determined such that the downstream NDR (defined in clause X.6.8.3.1) does not exceed
DTA_NDR_max_ds. The bit loading for the upstream shall be determined such that the upstream NDR
(defined in clause X.6.8.3.1) does not exceed DTA_NDR_max_us.
The valid values and coding for DTA_NDR_max shall be the same as for NDR_max as specified in
clause 11.4.2.2.
The control parameter DTA_NDR_max is derived by the DRA from the DPU-MIB configuration parameter
DTA_MAXNDR.

X.6.7.6 Maximum net data rate (NDR_max)
The value of NDR_max shall be ignored if DTA operation is enabled.

X.6.7.7 Minimum expected throughput (ETR_min)
The value of ETR_min shall be ignored if DTA operation is enabled, except for the purpose of comparing ETR
against ETR_min_eoc, as defined in clauses X.6.9 and X.6.10.

X.6.8 Transceiver related DTA status parameters
The following status parameters indicate the state of DTA and Annex X operation at the transceiver level:
• Annex X operation enabled (Annex_X_enabled);

• DTA enabled (DTA_enabled).
The following status parameters, specified in clause X.6.8.3, are used for data rate reporting if DTA is
enabled:
• Net data rate (NDR);
• Attainable net data rate (ATTNDR);
• Expected throughput (ETR);
• Attainable expected throughput (ATTETR).

X.6.8.1 Annex X operation enabled (Annex_X_enabled)

The status parameter Annex_X_enabled indicates whether Annex X operation is enabled. The
Annex_X_enabled value is reported as ANNEX_X_ENABLED in the DPU-MIB.

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