Layer 1 reference signal received power reporting for a secondary cell

1. A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

receive configuration information including information on resource configurations of reference signals for a layer 1 reference signal received power (RSRP) reporting of a secondary cell and information on configurations of channel state information (CSI) report for the layer 1 RSRP reporting of the secondary cell;

receive a control element indicating activation of the secondary cell; and

in response to the control element, transmitting a layer 1 RSRP report comprising:

a first field indicating a reference signal of the reference signals; and

a second field indicating a layer 1 RSRP value of the reference signal.

2. The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:

receive a second control element indicating deactivation of the secondary cell; and

stop, in response to the second control element, the transmitting the layer 1 RSRP report for the secondary cell.

3. The wireless device of claim 1 , wherein a second power value of the at least the layer 1 RSRP value is a 4-bit value, indicating a power value relative to a first power value of the at least the layer 1 RSRP value.

4. The wireless device of claim 1 , wherein a first power value of the at least the layer 1 RSRP value is a 7-bit value.

5. The wireless device of claim 4 , wherein the 7-bit value indicates a power value between −140 dbm and −44 dbm.

6. The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to transmit a channel quality indicator report for the secondary cell, in response to the control element.

7. The wireless device of claim 6 , wherein the channel quality indicator report comprises at least one of:

a channel quality indicator;

a precoding matrix indicator;

a channel state information reference signal resource indicator;

a synchronization signal/physical broadcast channel block resource indicator; and

a layer indicator.

8. The wireless device of claim 1 , wherein the wireless device transmits the layer 1 RSRP report from a first slot a number of slots after a second slot when the wireless device receives the control element.

9. The wireless device of claim 8 , wherein the number of slots is a configured value or a predefined value.

10. The wireless device of claim 1 , wherein the wireless device transmits the layer 1 RSRP report with a report periodicity.

11. The wireless device of claim 1 , wherein the at least the layer 1 RSRP value is equal to or greater than a threshold.

12. The wireless device of claim 11 , wherein the threshold is indicated in a radio resource control message.

13. The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to transmit a channel quality indicator report for the secondary cell, in response to a power value of the at least the layer 1 RSRP value being equal to or greater than a threshold.

14. The wireless device of claim 1 , wherein reference signals comprise at least one of:

a first plurality of channel state information reference signals; and

a second plurality of synchronization signal blocks.

15. The wireless device of claim 14 , wherein the first plurality of channel state information reference signals are one or more periodic channel state information reference signals.

16. The wireless device of claim 1 , wherein the configuration parameters further comprise resource configurations of an uplink control channel for the layer 1 RSRP reporting for the secondary cell.

17. The wireless device of claim 16 , wherein the wireless device transmits the layer 1 RSRP report via the uplink control channel.

18. The wireless device of claim 17 , wherein the uplink control channel is configured on a primary cell, or a physical uplink control channel secondary cell.

19. A system comprising:

a base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to transmit configuration information including information on resource configurations of reference signals for a layer 1 reference signal received power (RSRP) reporting of a secondary cell and information on configurations of channel state information (CSI) report for the layer 1 RSRP reporting of the secondary cell; and

a wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

receive the configuration parameters;

receive a control element indicating activation of the secondary cell; and

in response to the control element, transmitting a layer 1 RSRP report comprising:

a first field indicating a reference signal of the reference signals; and

a second field indicating a layer 1 RSRP value of the reference signal.

20. A system comprising:

a wireless device; and

a base station,

wherein the wireless device is configured to:

receive, from the base station, configuration information including information on resource configurations of reference signals for a layer 1 reference signal received power (RSRP) reporting of a secondary cell and information on configurations of channel state information (CSI) report for the layer 1 RSRP reporting of the secondary cell;

receive a control element indicating activation of the secondary cell; and

in response to the control element, transmitting a layer 1 RSRP report comprising:

a first field indicating a reference signal of the reference signals; and

a second field indicating a layer 1 RSRP value of the reference signal.