Transmission configuration indicator state management
A wireless device may use different power control sets to communicate with different transmission reception points (TRPs). The power control set for communicating with a particular TRP may be selected from at least two power control sets configured for a resource (such as a bandwidth part (BWP)), for example, based on a transmission configuration indicator (TCI) state corresponding to the particular TRP.
1 . A method comprising: receiving, by a wireless device, a control command indicating a transmission configuration indicator (TCI) state; receiving downlink control information (DCI) scheduling transmission of a downlink signal, wherein a time offset between the DCI and the downlink signal is less than a threshold; and based on the time offset being less than the threshold and the TCI state being associated with a physical cell identifier (PCI) of a serving cell, receiving the downlink signal using the TCI state.
2 . The method of claim 1 , further comprising: receiving, by the wireless device, one or more configuration parameters indicating: a plurality of uplink power control sets for a second cell; and at least two uplink power control sets of the plurality of uplink power control sets for an uplink bandwidth part (BWP) of the second cell; receiving second DCI indicating activation of a second TCI state; and based on the one or more configuration parameters not indicating an uplink power control set index for the second TCI state, transmitting an uplink signal via the uplink BWP of the second cell and using a transmission power determined based on a first uplink power control set of the at least two uplink power control sets.
3 . The method of claim 1 , wherein the downlink signal is: a physical downlink shared channel (PDSCH) reception; or an aperiodic channel state information-reference signal (CSI-RS).
4 . The method of claim 1 , further comprising: monitoring, by the wireless device, a control resource set (CORESET) based on the TCI state; receiving second DCI indicating a second TCI state; and wherein the receiving the downlink signal using the TCI state is further based on the second TCI state being associated with a second PCI different from the PCI of the serving cell.
5 . The method of claim 1 , wherein the threshold is indicated by capability information of the wireless device.
6 . The method of claim 1 , wherein the receiving the downlink signal using the TCI state comprises receiving the downlink signal using the TCI state by applying an antenna port quasi co-location assumption based on the TCI state.
7 . The method of claim 1 , wherein the receiving the downlink signal by the TCI state comprises assuming at least one DM-RS antenna port for receiving the downlink signal being quasi co-located with a reference signal indicated by the TCI state.
8 . A method comprising: monitoring, by a wireless device, a control resource set (CORESET) based on a first transmission configuration indicator (TCI) state; receiving a control command indicating a second TCI state; receiving downlink control information (DCI) scheduling transmission of a downlink signal, wherein a time offset between the DCI and the downlink signal is less than a threshold; and based on the time offset being less than the threshold and the second TCI state being associated with a second physical cell identifier (PCI) different from a PCI of a serving cell, receiving the downlink signal using the first TCI state.
9 . The method of claim 8 , further comprising: receiving, by the wireless device, one or more configuration parameters indicating: a plurality of uplink power control sets for a second cell; and at least two uplink power control sets of the plurality of uplink power control sets for an uplink bandwidth part (BWP) of the second cell; receiving second DCI indicating a third TCI state; and based on the one or more configuration parameters not indicating an uplink power control set index for the third TCI state, transmitting an uplink signal via the uplink BWP of the cell and using a transmission power determined based on a first uplink power control set of the at least two uplink power control sets.
10 . The method of claim 8 , wherein the downlink signal is: a physical downlink shared channel (PDSCH) reception; or an aperiodic channel state information-reference signal (CSI-RS).
11 . The method of claim 8 , wherein the receiving the downlink signal using the TCI state comprises receiving the downlink signal using the TCI state by applying an antenna port quasi co-location assumption based on the TCI state.
12 . The method of claim 8 , wherein the receiving the downlink signal comprises assuming at least one DM-RS antenna port for receiving the downlink signal being quasi co-located with a reference signal indicated by the TCI state.
13 . The method of claim 8 , wherein the receiving the downlink signal using the first TCI state is further based on the first TCI state being associated with the PCI of the serving cell.
14 . A method comprising: receiving, by a wireless device, one or more configuration parameters indicating: a plurality of uplink power control sets for a serving cell; and at least two uplink power control sets of the plurality of uplink power control sets for an uplink bandwidth part (BWP) of the serving cell; receiving downlink control information (DCI) indicating a transmission configuration indicator (TCI) state; and
transmitting, via the uplink BWP of the serving cell and using a transmission power that is based on a first uplink power control set of the at least two uplink power control sets, an uplink signal based on: the one or more configuration parameters not indicating an uplink power control set index for the TCI state; and the first uplink power control set being associated with a physical cell identifier (PCI) of the serving cell.
15 . The method of claim 14 , further comprising: receiving second DCI scheduling transmission of a downlink signal, wherein a time offset between the second DCI and the downlink signal is less than a threshold; and based on the time offset being less than the threshold and the TCI state being associated with the PCI of the serving cell, receiving the downlink signal using the TCI state.
16 . The method of claim 14 , further comprising: monitoring, by the wireless device, a control resource set (CORESET) based on a second TCI state; receiving second DCI scheduling transmission of a downlink signal, wherein a time offset between the second DCI and the downlink signal is less than a threshold; and based on the time offset being less than the threshold and the TCI state being associated with a PCI different from the PCI of the serving cell, receiving the downlink signal using the second TCI state.
17 . The method of claim 14 , further comprising determining the first uplink power control set for transmitting the uplink signal based on: the PCI being associated with the TCI state.
18 . The method of claim 14 , further comprising:
receiving second DCI indicating a second TCI state; and
transmitting, based on the one or more configuration parameters not indicating an uplink power control set for the second TCI state, a second uplink signal using a second transmission power determined based on a second uplink power control set of the at least two uplink power control sets.
19 . The method of claim 14 , further comprising:
receiving second DCI indicating a second TCI state; and
transmitting, based on the one or more configuration parameters indicating a second uplink power control set for the second TCI state, a second uplink signal using a second transmission power determined based on the second uplink power control set.