Power control in power headroom report
A wireless device receives one or more configuration parameters indicating: one or more uplink power control sets; and a plurality of transmission configuration indicator (TCI) states for a cell. The wireless device transmits, in response to the one or more configuration parameters not comprising a two-power-headroom-report-mode (twoPHRMode) parameter that indicates to report two power headroom values associated with two sounding reference signal (SRS) resource sets of the cell, a power headroom medium-access control (MAC) control element (CE) indicating one Type 1 power headroom value for the cell. The one Type 1 power headroom value is determined using: first power control parameters in a first uplink power control set, of the one or more uplink power control sets, associated with a first TCI state of two indicated TCI states; and a first pathloss reference signal associated with the first TCI state.
1. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, causes the wireless device to:
receive one or more radio resource control (RRC) messages comprising one or more configuration parameters indicating:
one or more uplink power control sets; and
a plurality of transmission configuration indicator (TCI) states for a cell;
receive a command indicating two TCI states of the plurality of TCI states; and
in response to the one or more configuration parameters not comprising a two-power-headroom-report-mode (twoPHRMode) parameter that indicates to report two power headroom values associated with two sounding reference signal (SRS) resource sets of the cell, transmit a power headroom medium-access control (MAC) control element (CE) indicating one Type 1 power headroom value for the cell, wherein:
the one Type 1 power headroom value is determined using:
first power control parameters in a first uplink power control set, of the one or more uplink power control sets, associated with a first TCI state of the two TCI states, and
a first pathloss reference signal associated with the first TCI state; and
the first power control parameters comprise:
a first target-received power,
a first pathloss compensation factor, and
a first closed loop index.
2. The wireless device of claim 1 , wherein each uplink power control set of the one or more uplink power control sets indicates respective power control parameters comprising:
a target-received power;
a pathloss compensation factor; and
a closed loop index.
3. The wireless device of claim 1 , wherein the one or more configuration parameters further indicate, for the first TCI state, a first uplink power control set identifier indicating the first uplink power control set.
4. The wireless device of claim 1 , wherein the command is:
downlink control information (DCI); or
a MAC CE.
5. The wireless device of claim 1 , wherein:
the instructions further cause the wireless device to transmit the power headroom MAC CE in a slot; and
there is no PUSCH transmission, via the cell, in the slot that the power headroom MAC CE is transmitted.
6. The wireless device of claim 1 , wherein the one Type 1 power headroom value is for a reference PUSCH transmission based on not transmitting any PUSCH transmission, via the cell, in a slot that the power headroom MAC CE is transmitted.
7. The wireless device of claim 1 , wherein the instructions further cause the wireless device to:
receive one or more second RRC messages comprising one or more second configuration parameters of the cell; and
in response to the one or more second configuration parameters comprising the twoPHRMode parameter, transmit a second power headroom MAC CE comprising two Type 1 power headroom values for the cell, wherein:
a first Type 1 power headroom value of the two Type 1 power headroom values is determined using:
the first power control parameters in the first uplink power control set, of the one or more uplink power control sets, associated with the first TCI state of the two TCI states; and
the first pathloss reference signal associated with the first TCI state; and
a second Type 1 power headroom value of the two Type 1 power headroom values is determined using:
second power control parameters in a second uplink power control set, of the one or more uplink power control sets, associated with a second TCI state of the two TCI states; and
a second pathloss reference signal associated with the second TCI state.
8. The wireless device of claim 1 , wherein the one or more configuration parameters further indicate, for the cell, the two SRS resource sets with usages both set to codebook or both set to non-codebook.
9. The wireless device of claim 1 , wherein the TCI states are for:
both uplink transmissions and downlink receptions via the cell; or
only uplink transmissions via the cell.
10. A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, causes the base station to:
transmit, to a wireless device, one or more radio resource control (RRC) messages comprising one or more configuration parameters indicating:
one or more uplink power control sets; and
a plurality of transmission configuration indicator (TCI) states for a cell;
transmit a command indicating two TCI states of the plurality of TCI states; and
in response to the one or more configuration parameters not comprising a two-power-headroom-report-mode (twoPHRMode) parameter that indicates to report two power headroom values associated with two sounding reference signal (SRS) resource sets of the cell, receive a power headroom medium-access control (MAC) control element (CE) indicating one Type 1 power headroom value for the cell, wherein:
the one Type 1 power headroom value is determined, by the wireless device, using:
first power control parameters in a first uplink power control set, of the one or more uplink power control sets, associated with a first TCI state of the two TCI states, and
a first pathloss reference signal associated with the first TCI state; and
the first power control parameters comprise:
a first target-received power,
a first pathloss compensation factor, and
a first closed loop index.
11. The base station of claim 10 , wherein each uplink power control set of the one or more uplink power control sets indicates respective power control parameters indicating:
a target-received power;
a pathloss compensation factor; and
a closed loop index.
12. The base station of claim 10 , wherein the one or more configuration parameters further indicate, for the first TCI state, a first uplink power control set identifier indicating the first uplink power control set.
13. The base station of claim 10 , wherein the command is:
downlink control information (DCI); or
a MAC CE.
14. The base station of claim 10 , wherein:
the instructions further cause the wireless device to receive the power headroom MAC CE in a slot; and
there is no PUSCH transmission, via the cell, in the slot that the power headroom MAC CE is received.
15. The base station of claim 10 , wherein the one Type 1 power headroom value is for a reference PUSCH transmission based on not receiving any PUSCH transmission, via the cell, in a slot that the power headroom MAC CE is received.
16. The base station of claim 10 , wherein the instructions further cause the base station to:
transmit one or more second RRC messages comprising one or more second configuration parameters of the cell; and
in response to the one or more second configuration parameters comprising the twoPHRMode parameter, receive a second power headroom MAC CE comprising two Type 1 power headroom values for the cell, wherein:
a first Type 1 power headroom value of the two Type 1 power headroom values is determined, by the wireless device, using:
the first power control parameters in the first uplink power control set, of the one or more uplink power control sets, associated with the first TCI state of the two TCI states; and
the first pathloss reference signal associated with the first TCI state; and
a second Type 1 power headroom value of the two Type 1 power headroom values is determined, by the wireless device, using:
second power control parameters in a second uplink power control set, of the one or more uplink power control sets, associated with a second TCI state of the two TCI states; and
a second pathloss reference signal associated with the second TCI state.
17. The base station of claim 10 , wherein the one or more configuration parameters further indicate, for the cell, the two SRS resource sets with usages both set to codebook or both set to non-codebook.
18. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:
receive one or more radio resource control (RRC) messages comprising one or more configuration parameters indicating:
one or more uplink power control sets; and
a plurality of transmission configuration indicator (TCI) states for a cell;
receive a command indicating two TCI states of the plurality of TCI states; and
in response to the one or more configuration parameters not comprising a two-power-headroom-report-mode (twoPHRMode) parameter that indicates to report two power headroom values associated with two sounding reference signal (SRS) resource sets of the cell, transmit a power headroom medium-access control (MAC) control element (CE) indicating one Type 1 power headroom value for the cell, wherein:
the one Type 1 power headroom value is determined using:
first power control parameters in a first uplink power control set, of the one or more uplink power control sets, associated with a first TCI state of the two TCI states, and
a first pathloss reference signal associated with the first TCI state; and
the first power control parameters comprise:
a first target-received power,
a first pathloss compensation factor, and
a first closed loop index.