Wireless Communications for Uplink Cancelation

1 . A method comprising:

receiving, by a wireless device, a request for at least one capability parameter of the wireless device;

sending, based on the request, a capability parameter indicating that cancelation of uplink transmission is supported; and

after sending the capability parameter, receiving a radio resource control (RRC) message comprising one or more parameters associated with downlink control information (DCI) for uplink cancelation indication.

2 . The method of claim 1 , wherein:

the receiving the RRC message comprises receiving at least one RRC message comprising a configuration of uplink cancelation indication of a DCI format associated with uplink cancelation,

the configuration of uplink cancelation indication indicates an association between each uplink cancelation indicator of the DCI and a cell of a plurality of cells, and

one or more uplink cancelation indicators, of the DCI, comprises:

a first uplink cancelation indicator associated with a first cell of the plurality of cells; and

a second uplink cancelation indicator associated with a second cell of the plurality of cells.

3 . The method of claim 1 , wherein:

the receiving the request comprises receiving the request from a base station via a second RRC message;

the sending the capability parameter comprises sending the capability parameter to the base station via a third RRC message; and

the receiving the RRC message comprises receiving the RRC message from the base station.

4 . The method of claim 1 , further comprising:

sending, via an uplink shared channel, a first portion of uplink data;

receiving the DCI, wherein the DCI comprises one or more uplink cancelation indicators that indicate at least one of:

stopping uplink transmission; or

canceling scheduled uplink transmission; and

based on the DCI, not sending a second portion of the uplink data,

wherein the one or more uplink cancelation indicators further indicate at least one uplink resource is preempted for another wireless device.

5 . The method of claim 1 , wherein:

the receiving the RRC message comprises receiving at least one RRC message comprising:

a radio network temporary identifier (RNTI) associated with uplink cancelation; and

a configuration of uplink cancelation indication of a DCI format associated with uplink cancelation; and

the method further comprises:

receiving the DCI;

determining, based on the RNTI associated with uplink cancelation, that the DCI indicates uplink cancelation; and

skipping, based on the determining that the DCI indicates uplink cancelation, transmission of a first uplink message via at least one uplink resource.

6 . The method of claim 1 , further comprising:

sending, based on the request, a second capability parameter indicating that downlink preemption is not supported, and

receiving, after sending the capability parameter and the second capability parameter, a control message comprising a first radio network temporary identifier (RNTI) for reception of an uplink cancelation indication, wherein the control message does not comprise a second RNTI for reception of a downlink preemption indication, and wherein the control message indicates at least one control channel parameter, for receiving the DCI, comprising at least one of:

a control resource set; or

a search space.

7 . A method comprising:

sending, by a base station, a request for at least one capability parameter of a wireless device;

receiving, based on the request, a capability parameter indicating that cancelation of uplink transmission is supported; and

after receiving the capability parameter, sending a radio resource control (RRC) message comprising one or more parameters associated with downlink control information (DCI) for uplink cancelation indication.

8 . The method of claim 7 , wherein:

the sending the RRC message comprises sending at least one RRC message comprising a configuration of uplink cancelation indication of a DCI format associated with uplink cancelation,

the configuration of uplink cancelation indication indicates an association between each uplink cancelation indicator of the DCI and a cell of a plurality of cells, and

one or more uplink cancelation indicators, of the DCI, comprises:

a first uplink cancelation indicator associated with a first cell of the plurality of cells; and

a second uplink cancelation indicator associated with a second cell of the plurality of cells.

9 . The method of claim 7 , wherein:

the sending the request comprises sending the request to the wireless device via a second RRC message;

the receiving the capability parameter comprises receiving the capability parameter from the wireless device via a third RRC message; and

the sending the RRC message comprises sending the RRC message to the wireless device.

10 . The method of claim 7 , further comprising:

receiving, via an uplink shared channel, a first portion of uplink data;

sending the DCI, wherein the DCI comprises one or more uplink cancelation indicators that indicate at least one of:

stopping uplink transmission; or

canceling scheduled uplink transmission; and

based on the DCI, skipping reception of a second portion of the uplink data,

wherein the one or more uplink cancelation indicators further indicate at least one uplink resource is preempted for another wireless device.

11 . The method of claim 7 , wherein:

the sending the RRC message comprises sending at least one RRC message comprising:

a radio network temporary identifier (RNTI) associated with uplink cancelation; and

a configuration of uplink cancelation indication of a DCI format associated with uplink cancelation; and

the method further comprises:

sending the DCI;

scrambling, based on the RNTI associated with uplink cancelation, the DCI; and

skipping reception of a first uplink message via at least one uplink resource.

12 . The method of claim 7 , further comprising:

receiving, based on the request, a second capability parameter indicating that downlink preemption is not supported, and

sending, after receiving the capability parameter and the second capability parameter, a control message comprising a first radio network temporary identifier (RNTI) for reception of an uplink cancelation indication, wherein the control message does not comprise a second RNTI for reception of a downlink preemption indication, and wherein the control message indicates at least one control channel parameter, for receiving the DCI, comprising at least one of:

a control resource set; or

a search space.

13 . 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 a request for at least one capability parameter of the wireless device;

send, based on the request, a capability parameter indicating that cancelation of uplink transmission is supported; and

after sending the capability parameter, receive a radio resource control (RRC) message comprising one or more parameters associated with downlink control information (DCI) for uplink cancelation indication.

14 . The wireless device of claim 13 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:

receive the RRC message by receiving at least one RRC message comprising a configuration of uplink cancelation indication of a DCI format associated with uplink cancelation, wherein the configuration of uplink cancelation indication indicates an association between each uplink cancelation indicator of the DCI and a cell of a plurality of cells, and

wherein one or more uplink cancelation indicators, of the DCI, comprises:

a first uplink cancelation indicator associated with a first cell of the plurality of cells; and

a second uplink cancelation indicator associated with a second cell of the plurality of cells.

15 . The wireless device of claim 13 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:

receive the request by receiving the request from a base station via a second RRC message;

send the capability parameter by sending the capability parameter to the base station via a third RRC message; and

receive the RRC message by receiving the RRC message from the base station.

16 . The wireless device of claim 13 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:

send, via an uplink shared channel, a first portion of uplink data;

receive the DCI, wherein the DCI comprises one or more uplink cancelation indicators that indicate at least one of:

stopping uplink transmission; or

canceling scheduled uplink transmission; and

based on the DCI, not send a second portion of the uplink data, and

wherein the one or more uplink cancelation indicators further indicate at least one uplink resource is preempted for another wireless device.

17 . The wireless device of claim 13 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:

receive the RRC message by receiving at least one RRC message comprising:

a radio network temporary identifier (RNTI) associated with uplink cancelation; and

a configuration of uplink cancelation indication of a DCI format associated with uplink cancelation;

receive the DCI;

determine, based on the RNTI associated with uplink cancelation, that the DCI indicates uplink cancelation; and

skip, based on the determining that the DCI indicates uplink cancelation, transmission of a first uplink message via at least one uplink resource.

18 . The wireless device of claim 13 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:

send, based on the request, a second capability parameter indicating that downlink preemption is not supported, and

receive, after sending the capability parameter and the second capability parameter, a control message comprising a first radio network temporary identifier (RNTI) for reception of an uplink cancelation indication, and

wherein the control message does not comprise a second RNTI for reception of a downlink preemption indication, and wherein the control message indicates at least one control channel parameter, for receiving the DCI, comprising at least one of:

a control resource set; or

a search space.

19 . 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:

send a request for at least one capability parameter of a wireless device;

receive, based on the request, a capability parameter indicating that cancelation of uplink transmission is supported; and

after receiving the capability parameter, send a radio resource control (RRC) message comprising one or more parameters associated with downlink control information (DCI) for uplink cancelation indication.

20 . The base station of claim 19 , wherein the instructions, when executed by the one or more processors, cause the base station to:

send the RRC message by sending at least one RRC message comprising a configuration of uplink cancelation indication of a DCI format associated with uplink cancelation, wherein the configuration of uplink cancelation indication indicates an association between each uplink cancelation indicator of the DCI and a cell of a plurality of cells, and

wherein one or more uplink cancelation indicators, of the DCI, comprises:

a first uplink cancelation indicator associated with a first cell of the plurality of cells; and

a second uplink cancelation indicator associated with a second cell of the plurality of cells.

21 . The base station of claim 19 , wherein the instructions, when executed by the one or more processors, cause the base station to:

send the request by sending the request to the wireless device via a second RRC message;

receive the capability parameter by receiving the capability parameter from the wireless device via a third RRC message; and

send the RRC message by sending the RRC message to the wireless device.

22 . The base station of claim 19 , wherein the instructions, when executed by the one or more processors, cause the base station to:

receive, via an uplink shared channel, a first portion of uplink data;

send the DCI, wherein the DCI comprises one or more uplink cancelation indicators that indicate at least one of:

stopping uplink transmission; or

canceling scheduled uplink transmission; and

based on the DCI, skip reception of a second portion of the uplink data, and

wherein the one or more uplink cancelation indicators further indicate at least one uplink resource is preempted for another wireless device.

23 . The base station of claim 19 , wherein the instructions, when executed by the one or more processors, cause the base station to:

send the RRC message by sending at least one RRC message comprising:

a radio network temporary identifier (RNTI) associated with uplink cancelation; and

a configuration of uplink cancelation indication of a DCI format associated with uplink cancelation;

send the DCI;

scramble, based on the RNTI associated with uplink cancelation, the DCI; and

skip reception of a first uplink message via at least one uplink resource.

24 . The base station of claim 19 , wherein the instructions, when executed by the one or more processors, cause the base station to:

receive, based on the request, a second capability parameter indicating that downlink preemption is not supported, and

send, after receiving the capability parameter and the second capability parameter, a control message comprising a first radio network temporary identifier (RNTI) for reception of an uplink cancelation indication, and

wherein the control message does not comprise a second RNTI for reception of a downlink preemption indication, and wherein the control message indicates at least one control channel parameter, for receiving the DCI, comprising at least one of:

a control resource set; or

a search space.