Feedback timing
A wireless device receives a downlink control information (DCI) comprising a first field indicating a transition of a cell to a dormant state and a second field indicating a hybrid automatic repeat request (HARQ) feedback timing. The wireless device transmits, in response to the DCI indicating the transition and via a physical uplink control channel resource, a positive acknowledgement of a reception of the DCI at a time interval based on the HARQ feedback timing.
1. A method, comprising:
transmitting, from a base station to a wireless device, a downlink control information (DCI), the DCI comprising:
a first field indicating a transition of a cell to a dormant state; and
a second field indicating a hybrid automatic repeat request (HARQ) feedback timing; and
receiving from the wireless device, in response to the DCI indicating the transition, a positive acknowledgement of a reception of the DCI at a time interval based on the HARQ feedback timing.
2. The method of claim 1 , wherein the DCI is of a DCI format 1_1, the DCI comprising a bandwidth part identifier indicating an active bandwidth part of the cell.
3. The method of claim 1 , wherein the base station receives one or more uplink control information (UCI) bits, the one or more UCI bits comprising a bit indicating the positive acknowledgement.
4. The method of claim 1 , wherein the DCI indicates the transition of the cell to the dormant state in response to the first field being set to a predefined value.
5. The method of claim 4 , wherein the predefined value is a value of all bits of the first field being set to one.
6. The method of claim 1 , wherein the transition of the cell to the dormant state comprises switching an active bandwidth part of the cell from a first bandwidth of the cell to a second bandwidth part of the cell for the wireless device.
7. The method of claim 1 , wherein the DCI does not schedule a reception via a physical downlink shared channel (PDSCH).
8. The method of claim 1 , wherein the base station determines a physical uplink control channel (PUCCH) resource based on a PUCCH resource index indicated by a third field of the DCI.
9. The method of claim 1 , further comprising receiving, by the base station during the dormant state, channel state information report for the cell.
10. The method of claim 1 , wherein the dormant state is a time duration during which the base station performs at least one of:
stopping transmitting to the wireless device downlink control channels on an active downlink bandwidth part of the cell;
stopping receiving from the wireless device uplink channels or signals on an active uplink bandwidth part of the cell; or
receiving from the wireless device channel state information report for the cell.
11. 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 to a wireless device, a downlink control information (DCI), the DCI comprising:
a first field indicating a transition of a cell to a dormant state; and
a second field indicating a hybrid automatic repeat request (HARQ) feedback timing; and
receive from the wireless device, in response to the DCI indicating the transition and via a physical uplink control channel resource, a positive acknowledgement of a reception of the DCI at a time interval based on the HARQ feedback timing.
12. The base station of claim 11 , wherein the DCI is of a DCI format 1_1, the DCI comprising a bandwidth part identifier indicating an active bandwidth part of the cell.
13. The base station of claim 11 , wherein the base station receives one or more uplink control information (UCI) bits, the one or more UCI bits comprising a bit indicating the positive acknowledgement.
14. The base station of claim 11 , wherein the DCI indicates the transition of the cell to the dormant state in response to the first field being set to a predefined value.
15. The base station of claim 14 , wherein the predefined value is a value of all bits of the first field being set to one.
16. The base station of claim 11 , wherein the transition of the cell to the dormant state comprises switching an active bandwidth part of the cell from a first bandwidth of the cell to a second bandwidth part of the cell for the wireless device.
17. The base station of claim 11 , wherein the DCI does not schedule a reception via a physical downlink shared channel (PDSCH).
18. The base station of claim 11 , wherein the base station determines a physical uplink control channel (PUCCH) resource based on a PUCCH resource index indicated by a third field of the DCI.
19. The base station of claim 11 , wherein the instructions further cause the base station to receive, during the dormant state, a channel state information report for the cell.
20. A method, comprising:
receiving, by a wireless device, a downlink control information (DCI), the DCI comprising: a first field indicating frequency domain resource assignment; and
a second field indicating a hybrid automatic repeat request (HARQ) feedback timing;
determining whether the DCI indicates a transition of a cell to a dormant state based on a value of the first field being set to a predefined value; and
in response to determining that the DCI indicates the transition of the cell to the dormant state:
transitioning the cell to the dormant state; and
transmitting a positive acknowledgement of a reception of the DCI at a time interval based on the HARQ feedback timing.