6.5.5 HS-DPCCH
25.1013GPPRelease 17TSUser Equipment (UE) radio transmission and reception (FDD)
The transmission of Ack/Nack or CQI over the HS-DPCCH may cause the transmission power in the uplink to vary. The ratio of the amplitude between the DPCCH and the Ack/Nack and CQI respectively is signalled by higher layers.
6.5.5.1 Minimum requirement
The nominal sum power on DPCCH+DPDCH is independent of the transmission of Ack/Nack and CQI unless the UE output power when Ack/Nack or CQI is transmitted would exceed the maximum value specified in Table 6.1A or fall below the value specified in 6.4.3.1, whereupon the UE shall apply additional scaling to the total transmit power as defined in section 5.1.2.6 of TS.25.214 [8].
The composite transmitted power (DPCCH + DPDCH+HS-DPCCH) may then also be rounded to the closest integer dB value. If rounding is done a power step exactly half-way between two integer values shall be rounded to the closest integer of greater magnitude.
The nominal power step due to transmission of Ack/Nack or CQI is defined as the difference between the nominal mean powers of two power evaluation periods either side of an HS-DPCCH boundary. The first evaluation period starts 25μs after a DPCCH slot boundary and ends 25μs before the following HS-DPCCH slot boundary. The second evaluation period starts 25μs after the same HS-DPCCH slot boundary and ends 25μs before the following DPCCH slot boundary. This is described graphically in figure 6.6.
Figure 6.6: Transmit power template during HS-DPCCH transmission
The tolerance of the power step due to transmission of the HS-DPCCH shall meet the requirements in table 6.9A. For each direction, up to 2 exceptions to the transmitter power step tolerance defined in table 6.9A shall be allowed. The transmitter power control range for exceptions is defined in table 6.9B. Exceptions are applicable only if the change in UL power is measured per 1-dB step size.
Table 6.9A: Transmitter power step tolerance
|
Nominal power step size (Up or down) P [dB] |
Transmitter power step tolerance [dB] |
|
0 |
+/- 0.5 |
|
1 |
+/- 0.5 |
|
2 |
+/- 1.0 |
|
3 |
+/- 1.5 |
|
4 ≤ Δ P ≤ 10 |
+/- 2.0 |
|
11 ≤ Δ P ≤15 |
+/- 3.0 |
Table 6.9B: Transmitter power step tolerance for exceptions
|
Nominal power step size (Up or down) P [dB] |
Transmitter power step tolerance [dB] |
|
0 |
+/- 0.5 |
|
1 |
+/- 1.5 |
|
2 |
+/- 1.5 |
|
3 |
+/- 1.5 |
|
4 ≤ Δ P ≤ 7 |
+/- 2.0 |
6.5.5.1A Additional requirement for UL OLTD
For UE with two active transmit antenna connectors in UL OLTD operation, the minimum requirements specified in sub-clause 6.5.5.1 apply at each transmit antenna connector.
6.5.5.1B Additional requirement for UL CLTD
The nominal sum power on DPCCH+S-DPCCH+DPDCH is independent of the transmission of Ack/Nack and CQI unless the UE output power when Ack/Nack or CQI is transmitted would exceed the maximum value specified in Table 6.1A or fall below the value specified in 6.4.3.1, whereupon the UE shall apply additional scaling to the total transmit power as defined in section 5.1.2.6 of TS.25.214 [8].
The composite transmitted power (DPCCH + S-DPCCH + DPDCH+HS-DPCCH) may then also be rounded to the closest integer dB value. If rounding is done a power step exactly half-way between two integer values shall be rounded to the closest integer of greater magnitude.
The nominal power step due to transmission of Ack/Nack or CQI is defined as the difference between the nominal mean powers of two power evaluation periods either side of an HS-DPCCH boundary. The first evaluation period starts 25μs after a DPCCH slot boundary and ends 25μs before the following HS-DPCCH slot boundary. The second evaluation period starts 25μs after the same HS-DPCCH slot boundary and ends 25μs before the following DPCCH slot boundary.
The tolerance of the power step due to transmission of the HS-DPCCH shall meet the requirements in table 6.9A at each transmit antenna connector.
6.5.5.1C Additional requirement for UL MIMO
The nominal sum power on DPCCH+S-DPCCH+E-DPDCH+S-E-DPDCH+E-DPCCH+S-E-DPCCH is independent of the transmission of Ack/Nack and CQI unless the UE output power when Ack/Nack or CQI is transmitted would exceed the maximum value specified in Table 6.1AC or fall below the value specified in 6.4.3.1D, whereupon the UE shall apply additional scaling to the total transmit power as defined in section 5.1.2.6 of TS.25.214 [8].
The composite transmitted power (DPCCH + S-DPCCH + E-DPDCH + S-E-DPDCH + E-DPCCH + S-E-DPCCH +HS-DPCCH) may then also be rounded to the closest integer dB value. If rounding is done a power step exactly half-way between two integer values shall be rounded to the closest integer of greater magnitude.
The nominal power step due to transmission of Ack/Nack or CQI is defined as the difference between the nominal mean powers of two power evaluation periods either side of an HS-DPCCH boundary. The first evaluation period starts 25μs after a DPCCH slot boundary and ends 25μs before the following HS-DPCCH slot boundary. The second evaluation period starts 25μs after the same HS-DPCCH slot boundary and ends 25μs before the following DPCCH slot boundary.
The tolerance of the power step due to transmission of the HS-DPCCH shall meet the requirements in table 6.9A at each transmit antenna connector.
6.5.5.1D Additional requirement for DB-DC-HSUPA
For UE supporting DB-DC-HSUPA operation, the minimum requirements specified in sub-clause 6.5.5.1 apply to the primary carrier which carries HS-DPCCH.