Uplink power control for data and control channels
Apparatuses and methods for power control for data and control channels. A method of operating a user equipment includes receiving information for a first transmission occasion for a physical uplink shared channel (PUSCH) and a second transmission occasion for a second physical uplink control channel (PUCCH) and receiving a first transmit power control (TPC) command. The method further includes determining a first power control adjustment state based on the first TPC command and a second power control adjustment state based on the first power control adjustment state. The method further includes transmitting the PUSCH in the first transmission occasion using the first power and the PUCCH in the second transmission occasion using the second power.
1 . A user equipment (UE) comprising
a transceiver configured to receive:
information for:
a first transmission occasion for a physical uplink shared channel (PUSCH), and
a second transmission occasion for a physical uplink control channel (PUCCH),
a first transmit power control (TPC) command, and
information for a set of transmission occasions for the PUSCH that include transmission occasions before and after the second transmission occasion, wherein the set of transmission occasions is after the reception of the first TPC command by a first time interval that is not smaller than a second time interval required for determining a transmission power based on a TPC command; and
a processor operably coupled to the transceiver, the processor configured to determine:
a first power control adjustment state based on the first TPC command,
a first power for the PUSCH based on the first power control adjustment state, and
a second power for the PUCCH based on the first power control adjustment state,
wherein the transceiver is further configured to transmit:
the PUSCH using the first power only in transmission occasions of the set of transmission occasions that are before the second transmission occasion, and
the PUCCH in the second transmission occasion using the second power.
2 . The UE of claim 1 , wherein the first TPC command is provided by a downlink control information (DCI) format scheduling a physical downlink shared channel (PDSCH) reception.
3 . The UE of claim 1 , wherein the first TPC command is provided by a downlink control information (DCI) format scheduling a PUSCH transmission.
4 . The UE of claim 1 , wherein the first TPC command is provided by a downlink control information (DCI) format scrambled by a TPC radio network temporary identifier (TPC-RNTI) and wherein the DCI format does not schedule a physical downlink shared channel (PDSCH) reception or a PUSCH transmission.
5 . The UE of claim 1 , wherein:
the transceiver is further configured to receive information for a third transmission occasion for a sounding reference signal (SRS);
the processor is further configured to determine a third power for the SRS based on the first power control adjustment state; and
the transceiver is further configured to transmit the SRS in the third transmission occasion with the third power.
6 . The UE of claim 1 , wherein:
the transceiver is further configured to receive a second TPC command, wherein a transmission occasion from the set of transmission occasions is:
after the second time interval from the reception of the second TPC command, and
before the second transmission occasion;
the processor is further configured to determine:
a second power control adjustment state based on the second TPC command, and
a third power based on the second power control adjustment state; and
the transceiver is further configured to transmit the PUSCH using the third power in transmission occasions from the set of transmission occasions that are after the second transmission occasion.
7 . A base station (BS) comprising
a transceiver configured to transmit:
information for:
a first reception occasion for a physical uplink shared channel (PUSCH), and
a second reception occasion for a physical uplink control channel (PUCCH),
a first transmit power control (TPC) command, and
information for a set of reception occasions for the PUSCH that include reception occasions before and after the second reception occasion, wherein the set of reception occasions is after the transmission of the first TPC command by a first time interval that is not smaller than a second time interval required for determining a reception power based on a TPC command; and
a processor operably coupled to the transceiver, the processor configured to determine:
a first power control adjustment state based on the first TPC command,
a first power for the PUSCH based on the first power control adjustment state, and
a second power for the PUCCH based on the first power control adjustment state,
wherein the transceiver is further configured to receive:
the PUSCH using the first power only in reception occasions of the set of reception occasions that are before the second reception occasion, and
the PUCCH in the second reception occasion using the second power.
8 . The BS of claim 7 , wherein the first TPC command is provided by a downlink control information (DCI) format scheduling a physical downlink shared channel (PDSCH) transmission.
9 . The BS of claim 7 , wherein the first TPC command is provided by a downlink control information (DCI) format scrambled by a TPC radio network temporary identifier (TPC-RNTI) and wherein the DCI format does not schedule a physical downlink shared channel (PDSCH) transmission or a PUSCH reception.
10 . The BS of claim 7 , wherein:
the transceiver is further configured to transmit information for a third reception occasion for a sounding reference signal (SRS);
the processor is further configured to determine a third power for the SRS based on the first power control adjustment state; and
the transceiver is further configured to receive the SRS in the third reception occasion with the third power.
11 . The BS of claim 7 , wherein:
the transceiver is further configured to transmit a second TPC command, wherein a reception occasion from the set of reception occasions is:
after the second time interval from the transmission of the second TPC command, and
before the second reception occasion;
the processor is further configured to determine:
a second power control adjustment state based on the second TPC command, and
a third power based on the second power control adjustment state; and
the transceiver is further configured to receive the PUSCH using the third power in reception occasions from the set of reception occasions that are after the second reception occasion.
12 . A method comprising:
receiving:
information for:
a first transmission occasion for a physical uplink shared channel (PUSCH), and
a second transmission occasion for a physical uplink control channel (PUCCH),
a first transmit power control (TPC) command; and
information for a set of transmission occasions for the PUSCH that include transmission occasions before and after the second transmission occasion, wherein the set of transmission occasions is after the reception of the first TPC command by a first time interval that is not smaller than a second time interval required for determining a transmission power based on a TPC command;
determining:
a first power control adjustment state based on the first TPC command,
a first power for the PUSCH based on the first power control adjustment state, and
a second power for the PUCCH based on the first power control adjustment state; and
transmitting:
the PUSCH using the first power only in transmission occasions of the set of transmission occasions that are before the second transmission occasion, and
the PUCCH in the second transmission occasion using the second power.
13 . The method of claim 12 , wherein the first TPC command is provided by a downlink control information (DCI) format scheduling a physical downlink shared channel (PDSCH) reception.
14 . The method of claim 12 , wherein the first TPC command is provided by a downlink control information (DCI) format scheduling a PUSCH transmission.
15 . The method of claim 12 , wherein the first TPC command is provided by a downlink control information (DCI) format scrambled by a TPC radio network temporary identifier (TPC-RNTI) and wherein the DCI format does not schedule a physical downlink shared channel (PDSCH) reception or a PUSCH transmission.
16 . The method of claim 12 , further comprising:
receiving information for a third transmission occasion for a sounding reference signal (SRS);
determining a third power for the SRS based on the first power control adjustment state; and
transmitting the SRS in the third transmission occasion with the third power.
17 . The method of claim 12 , further comprising:
receiving a second TPC command, wherein a transmission occasion from the set of transmission occasions is:
after the second time interval from the reception of the second TPC command, and
before the second transmission occasion;
determining:
a second power control adjustment state based on the second TPC command, and
a third power based on the second power control adjustment state; and
transmitting the PUSCH using the third power in transmission occasions from the set of transmission occasions that are after the second transmission occasion.