6.5.2 Transmit ON/OFF Time mask

25.1013GPPRelease 17TSUser Equipment (UE) radio transmission and reception (FDD)

The time mask for transmit ON/OFF defines the transient period allowed for the UE between transmit OFF power and transmit ON power. During the transient period there are no additional requirements on UE transmit power beyond what is required in subclause 6.2 maximum output power observed over a period of at least one timeslot. ON/OFF scenarios include PRACH preamble bursts, the beginning or end of PRACH message parts, the beginning or end of each discontinuous uplink DPCCH transmission gap and the beginning or end of UL DPCH transmissions.

6.5.2.1 Minimum requirement

The transmit power levels versus time shall meet the requirements in figure 6.2 for PRACH preambles, the requirements in figure 6.2A for discontinuous uplink DPCCH transmission and the requirements in figure 6.3 for all other cases. The off power observation period is defined as the RRC filtered mean power in a duration of at least one timeslot excluding any transient periods. The on power observation period is defined as the mean power over one timeslot excluding any transient periods. For PRACH preambles, the on power observation period is 3904 chips (4096 chips less the transient periods).

The off power specification in figures 6.2 and 6.3 is as defined in 6.5.1.1.

The average on power specification in figures 6.2 and 6.3 depends on each possible case.

– First preamble of RACH: Open loop accuracy (Table 6.3).

– During preamble ramping of the RACH, and between final RACH preamble and RACH message part: Accuracy depending on size of the required power difference (Table 6.7). The step in total transmitted power between final RACH preamble and RACH message (control part + data part) shall be rounded to the closest integer dB value. A power step exactly half-way between two integer values shall be rounded to the closest integer of greater magnitude.

– Accuracy for the DPCCH power loop:

After transmission gaps due to discontinuous uplink DPCCH transmission: Accuracy for the DPCCH power loop as defined in Table 6.7A. The uplink transmitter power difference tolerance after a transmission gap of up to 10 sub-frames shall be within the range as defined in Table 6.7A. The TPC_cmd value shown in Table 6.7A corresponds to the last TPC_cmd value received before the transmission gap and applied by the UE after the transmission gap when discontinuous uplink DPCCH transmission is activated.

– After transmission gaps in compressed mode: Accuracy for the DPCCH power loop as in Table 6.9.

– Accuracy for the DPCCH2 power loop:

The Accuracies are required when the power of DPCCH2 is within the range {DPCCH power + 20dB , DPCCH power – 5dB}

After transmission gaps due to discontinuous uplink DPCCH transmission: Accuracy for the DPCCH2 power loop has the same requirement from Table 6.7A as the DPCCH power loop

– After transmission gaps in compressed mode: Accuracy for the DPCCH2 power loop as in Table 6.9.

– Power step to Maximum Power: Maximum power accuracy (Table 6.1).

Figure 6.2: Transmit ON/OFF template for PRACH preambles

Figure 6.2A: Transmit ON/OFF template for discontinuous uplink DPCCH transmission

Figure 6.3: Transmit ON/OFF template for all other On/Off cases

Table 6.7: Transmitter power difference tolerance for RACH preamble ramping, and between final RACH preamble and RACH message part

Power step size (Up or down)* P [dB]	Transmitter power difference tolerance [dB]
0	+/- 1
1	+/- 1
2	+/- 1.5
3	+/- 2
4 ≤ Δ P ≤10	+/- 2.5
11 ≤ Δ P ≤15	+/- 3.5
16 ≤ Δ P ≤20	+/- 4.5
21 ≤ Δ P	+/- 6.5

NOTE: Power step size for RACH preamble ramping is from 1 to 8 dB with 1 dB steps.

Table 6.7A: Transmitter power difference tolerance after a gap of up to 10 sub-frames due to discontinuous uplink DPCCH transmission

Last TPC_cmd	Transmitter power step tolerance after discontinuous UL DPCCH transmission gap
	1 dB step size		2 dB step size		3 dB step size
	Lower	Upper	Lower	Upper	Lower	Upper
+ 1	-2 dB	+4 dB	-1 dB	+5 dB	0 dB	+6 dB
0	-3 dB	+3 dB	-3 dB	+3 dB	-3 dB	+3 dB
-1	-4 dB	+2 dB	-5 dB	+1 dB	-6 dB	0 dB

6.5.2.1A Additional requirement for UL OLTD

For UE with two active transmit antenna connectors in UL OLTD operation, the minimum requirements except the requirement with PRACH specified in sub-clause 6.5.2.1 apply at each transmit antenna connector.

6.5.2.1B Additional requirement for UL CLTD

For UE with two active transmit antenna connectors in UL CLTD activation state 1, the minimum requirements specified in sub-clause 6.5.2.1 except the requirement with PRACH apply at each transmit antenna connector.

For UE configured in UL CLTD activation state 2 or activation state 3, the minimum requirements in sub-clause 6.5.2.1 except the requirement with PRACH apply at the active transmit antenna connector.

6.5.2.1C Additional requirement for UL MIMO

For UE with two active transmit antenna connectors in UL MIMO operation, the minimum requirements specified in sub-clause 6.5.2.1, except the requirement with PRACH, apply at each transmit antenna connector.

6.5.2.1D Additional requirement for DB-DC-HSUPA operating simultaneously with CS

For UE supporting DB-DC-HSUPA operation simultaneously with CS, the minimum requirements specified in sub-clause 6.5.2.1 apply for the primary carrier.