Wireless communications for uplink preemption

Patent metadata

Field	Value
Publication number	US-12156216-B2
Application number	US-202318350441-A
Country	US
Kind code	B2
Filing date	Jul 11, 2023
Priority date	Mar 30, 2018
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

Systems, apparatuses, and methods are described for wireless communications. Wireless devices may have different capabilities for uplink preemption. A base station may communicate with a wireless device to determine a capability, of the wireless device, for uplink preemption. The wireless device may receive downlink control information indicating, based on the determined capability for uplink preemption, an uplink preemption.

First claim

The invention claimed is:

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 downlink control information (DCI) comprising one or more uplink cancelation indicators that indicate at least one of:
stopping uplink transmission; or
canceling scheduled uplink transmission.

2. The method of claim 1 , wherein the one or more uplink cancelation indicators further indicate at least one uplink resource is preempted for another wireless device.

3. The method of claim 1 , wherein the DCI further comprises one or more uplink suspension indicators that indicate suspending uplink transmission.

4. The method of claim 1 , further comprising:
receiving a radio resource control (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 the one or more uplink cancelation indicators 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.

5. The method of claim 1 , wherein:
the receiving the request comprises receiving the request from a base station via a first radio resource control (RRC) message;
the sending the capability parameter comprises sending the capability parameter to the base station via a second RRC message; and
the receiving the DCI comprises receiving the DCI from the base station.

6. The method of claim 1 , further comprising:
sending, via an uplink shared channel, a first portion of uplink data; and
based on the DCI, not sending a second portion of the uplink data.

7. The method of claim 1 , further comprising:
sending, based on the request, a second capability parameter indicating that downlink preemption is supported;
receiving second DCI that indicates downlink preemption of at least one downlink resource; and
skipping, based on the second DCI, reception of a first downlink message via the at least one downlink resource.

8. The method of claim 1 , further comprising:
receiving a radio resource control (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;

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.

9. 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.

10. The method of claim 1 , further comprising:
receiving, via a first downlink radio resource of a downlink shared channel, a first data packet;
receiving, via a second downlink radio resource of the downlink shared channel, a second data packet;
puncturing, based on second DCI indicating that the first downlink radio resource is preempted, the first data packet; and
decoding, based on the second downlink radio resource being not preempted, the second data packet.

11. 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 downlink control information (DCI) comprising one or more uplink cancelation indicators that indicate at least one of:
stopping uplink transmission; or
canceling scheduled uplink transmission.

12. The method of claim 11 , wherein the one or more uplink cancelation indicators further indicate at least one uplink resource is preempted for another wireless device.

13. The method of claim 11 , wherein the DCI further comprises one or more uplink suspension indicators that indicate suspending uplink transmission.

14. The method of claim 11 , further comprising:
sending a radio resource control (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 the one or more uplink cancelation indicators 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 method of claim 11 , wherein:
the sending the request comprises sending the request to the wireless device via a first radio resource control (RRC) message;
the receiving the capability parameter comprises receiving the capability parameter from the wireless device via a second RRC message; and
the sending the DCI comprises sending the DCI to the wireless device.

16. The method of claim 11 , further comprising:
receiving, via an uplink shared channel, a first portion of uplink data; and
based on the DCI, determining to skip reception of a second portion of the uplink data.

17. The method of claim 11 , further comprising:
receiving, based on the request, a second capability parameter indicating that downlink preemption is supported;
sending second DCI that indicates downlink preemption of at least one downlink resource; and
skipping, based on the second DCI, transmission of a first downlink message via the at least one downlink resource.

18. The method of claim 11 , further comprising:
sending a radio resource control (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;

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.

19. The method of claim 11 , 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 contr

Assignees

• Comcast Cable Comm Llc

Inventors

• Zhou Hua
• Dinan Esmael Hejazi
• Cirik Ali Cagatay
• Babaei Alireza
• Jeon Hyoungsuk
• Park Kyungmin

Classifications

• H04W72/54

  based on quality criteria · CPC title

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/044

  based on the type of the allocated resource · CPC title

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title