Page 709 - 5G Basics - Core Network Aspects

Transport aspects 2

Table 7-1 – Transmit PSD masks and PSDs used in this Recommendation

Parameter Description Notation
MEDLEY reference The PSD of signals transmitted by an FTU during the channel MREFPSDds,
PSD analysis and exchange phase of the initialization. MREFPSDus
Showtime PSD The PSD of signals transmitted by an FTU during the STPSDds
showtime. STPSDus

The details of computation rules for the PSD masks and setting rules for the PSDs are presented in
Table 7-2.

Table 7-2 – Formulae for transmit PSD and PSD mask calculations

Parameter Calculation
Transmit Calculated by the FTU-O for all frequencies as (Note 1):
PSD mask PSDMASKds(f) = min(LIMITMASKds(f), MIBPSDMASKds(f), ds_mask_restrictions_by_FTU-O_and_VCE)
(PSDMASK)
PSDMASKus(f) = min(LIMITMASKus(f), MIBPSDMASKus(f), us_mask_restrictions_by_FTU-O_and_VCE)
Downstream STARTPSDMASKds(f)
start PSD mask PSDMASKds(f), f (RFIBANDS U IARBANDS)
(START = min[PSDMASKds(f), TXPSDM_N], f (RFIBANDS U IARBANDS)
PSDMASKds)

Downstream STARTPSDds, expressed in dBm/Hz, is determined by the FTU-O, and for subcarriers from the
start PSD SUPPORTEDCARRIERSds set:
(STARTPSDds) STARTPSDds(f) ≤ STARTPSDMASKds(f)
(Note 2)
For all other subcarriers, the transmit power shall be set to zero
Upstream
start PSD mask
(START STARTPSDMASKus(f)
PSDMASKus)
min[PSDMASKus(f) , UPBOMASK(kl 0, f)], f (RFIBANDS U IARBANDS)
=
min[PSDMASKus(f) , UPBOMASK(kl 0, f), TXPSDM_N], f (RFIBANDS U IARBANDS)

STARTPSDus, expressed in dBm/Hz, is determined by the FTU-R and for subcarriers from the
Upstream
SUPPORTEDCARRIERSus set:
start PSD
(STARTPSDus) STARTPSDus(f) ≤ STARTPSDMASKus(f)
(Note 2) For all other subcarriers, the transmit power shall be set to zero

Channel CDPSDMASKds min[PSDMASKds(f), ds_mask_restrictions_by_VCE], f (RFIBANDS U IARBANDS)
discovery
(f) = min[PSDMASKds(f) ), TXPSDM_N], f (RFIBANDS U IARBANDS)
PSD mask
(CDPSDMASK)
CDPSDMASKus(f) =
min[PSDMASKus(f), MAXMASKus, UPBOMASK(kl 0, f)], f (RFIBANDS U IARBANDS)
=
min[PSDMASKus(f), MAXMASKus,UPBOMASK(kl 0, f), TXPSDM_N], f (RFIBANDS U IARBANDS)

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