6.4 Transmit ON/OFF power

37.1043GPPMulti-Standard Radio (MSR) Base Station (BS) radio transmission and receptionNR, E-UTRA, UTRA and GSM/EDGERelease 17TS

The requirements in subclause 6.4 are only applied for BC3 BS.

6.4.1 Transmitter OFF power

For UTRA and E-UTRA, transmitter OFF power is defined as the mean power measured over 70 μs filtered with a square filter of bandwidth equal to the Base Station RF Bandwidth(s) of the BS centred on the central frequency of the Base Station RF Bandwidth(s) during the transmitter OFF period.

In NR transmitter OFF power is defined as the mean power measured over 70/N us filtered with a square filter of bandwidth equal to the transmission bandwidth configuration of the BS (BWConfig) centred on the central frequency of the Base Station RF Bandwidth(s) during the transmitter OFF period. N = SCS/15, where SCS is Sub Carrier Spacing in kHz.

For BS supporting intra-band contiguous CA, the transmitter OFF power is defined as the mean power measured over 70/N us filtered with a square filter of bandwidth equal to the Aggregated BS Channel Bandwidth BWChannel_CA centred on (Fedge,high+Fedge,low)/2 during the transmitter OFF period. N is equal to 1 if there are any UTRA or E-UTRA carriers, or for NR N = SCS/15, where SCS is the smallest supported Sub Carrier Spacing in kHz in the Aggregated BS Channel Bandwidth.

6.4.1.1 Minimum Requirement

The transmitter OFF power spectral density shall be less than -85 dBm/MHz.

For BS capable of multi-band operation, the requirement is only applicable during the transmitter OFF period in all supported operating bands.

6.4.2 Transmitter transient period

The transmitter transient period is the time period during which the transmitter is changing from the OFF period to the ON period or vice versa. The transmitter transient period is illustrated in Figure 6.4.2-1 and Figure 6.4.2-2.

Figure 6.4.2-1: Illustration of the relations of transmitter ON period, transmitter OFF period and transmitter transient period (for E-UTRA/UTRA)

Transmitter output power

Time

Transmitter ON period

(DL transmission)

Transmitter OFF

period

Transmitter OFF

period

Transmitter transient

period

OFF power level

ON power level

(Informative)

UL transmission

GP or UL transmission

Figure 6.4.2-2: Illustration of the relations of transmitter ON period, transmitter OFF period and transmitter transient period (for NR)

6.4.2.1 Minimum requirements

The transmitter transient period shall be shorter than the values listed in Table 6.4.2.1-1 and Table 6.4.2.1-2.

Table 6.4.2.1-1: Minimum requirements for the transmitter transient period for a BS not supporting NR

Transition

Transient period length [μs]

OFF to ON

6.25

ON to OFF

17

Table 6.4.2.1-2: Minimum requirements for the transmitter transient period for a BS supporting NR and not supporting UTRA

Transition

Transient period length [μs]

OFF to ON

10

ON to OFF

10