Page 1040 - 5G Basics - Core Network Aspects

2 Transport aspects

X.6.8.2 DTA enabled (DTA_enabled)

The status parameter DTA_enabled indicates whether DTA operation is enabled. The DTA_enabled value is
reported as DTA_ENABLED in the DPU-MIB.
X.6.8.3 Data rate reporting if DTA is enabled

X.6.8.3.1 Net data rate (NDR)
If DTA is enabled, the status parameter net data rate (NDR) shall be calculated as defined in Table 9-21,
assuming:
Mds = DTA_max_Mds

Mus = MF – 1 – DTA_min_Mds
The calculation of the NDR shall be done according to the derived framing parameters given in Table 9-21
assuming a downstream data symbol rate of
 1 
 DTA_max_M ds 1  
f D DS  f DMT    M SF 

 M F 
 
and an upstream data symbol rate of

 1 
  M F 1  DTA_ min_M ds 1  
f D US  f DMT    M M SF 

 F 
  .

The NDR updates, valid values, representation and DPU-MIB reporting shall be as defined in
clause 11.4.1.1.1.
X.6.8.3.2 Attainable net data rate (ATTNDR)

If DTA is enabled, the status parameter attainable net data rate (ATTNDR) is defined as the NDR that
would be achieved if control parameter DTA_NDR_max were configured at the maximum valid value
of DTA_NDR_max (see clause X.6.7.5), while other control parameters remain at the same value.

The ATTNDR updates, valid values, representation and DPU-MIB reporting shall be as defined in
clause 11.4.1.1.2.
X.6.8.3.3 Expected throughput (ETR)

If DTA is enabled, the status parameter expected throughput (ETR) shall be derived from the NDR
(as defined in clause X.6.8.3.1) and the RTxOH (as defined in Table 9-21), as ETR = (1 – RTxOH) x NDR.

NOTE – For the purpose of verifying that ETR ≥ ETR_min_eoc, the ETR is calculated differently, as defined in
clause X.6.9.
The ETR updates, valid values, representation and DPU-MIB reporting shall be as defined in
clause 11.4.1.1.3.

X.6.8.3.4 Attainable expected throughput (ATTETR)
If DTA is enabled, the status parameter attainable expected throughput (ATTETR) shall be derived from the
ATTNDR (as defined in clause X.6.8.3.2) and the RTxOH (as defined in Table 9-21), as ATTETR = (1 – RTxOH) x
ATTNDR.
The ATTETR updates, valid values, representation and DPU-MIB reporting shall be as defined in
clause 11.4.1.1.4.

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