Wireless communications for uplink preemption and downlink preemption

Patent metadata

Field	Value
Publication number	US-11558857-B2
Application number	US-202117222893-A
Country	US
Kind code	B2
Filing date	Apr 5, 2021
Priority date	Mar 30, 2018
Publication date	Jan 17, 2023
Grant date	Jan 17, 2023

Abstract

Systems, apparatuses, and methods are described for wireless communications. A wireless device may have different capabilities for downlink preemption and uplink preemption. A base station may assign a first radio network temporary identifier (RNTI) for downlink preemption and a second RNTI for uplink preemption. The wireless device may receive downlink control information indicating, based on the first RNTI or the second RNTI, a downlink preemption or an uplink preemption.

First claim

What is claimed is:

1. A method comprising:
sending, by a wireless device, a message comprising:
a first capability parameter indicating that downlink preemption is supported; and
a second capability parameter indicating that uplink preemption is supported;

receiving, after sending the message, a control message comprising:
a first radio network temporary identifier (RNTI) for reception of a downlink preemption indication; and
a second RNTI for reception of an uplink preemption indication; and

receiving at least one downlink control channel transmission comprising at least one of:
first downlink control information (DCI), associated with the first RNTI, indicating downlink preemption of at least one downlink resource; or
second DCI, associated with the second RNTI, indicating uplink preemption of at least one uplink resource.

2. The method of claim 1 , further comprising:
based on the second DCI indicating the uplink preemption:
canceling a scheduled transmission of uplink data; and
sending a third message.

3. The method of claim 1 , further comprising:
receiving, by the wireless device from a base station, a capability request comprising a request for capability parameters,
wherein the sending the message is based on the capability request.

4. The method of claim 1 , wherein:
the sending the message comprises sending the message to a base station; and
the receiving the control message comprises receiving the control message from the base station.

5. The method of claim 1 , further comprising determining the first DCI based on:
the first RNTI; and
at least one of:
a downlink radio resource;
a control resource set;
a search space; or
a periodicity.

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

7. A method comprising:
receiving, by a wireless device, a capability request message comprising a request for capability parameters of the wireless device;
sending, based on the capability request message, a capability response message comprising the capability parameters, wherein the capability parameters comprise a capability parameter indicating that uplink preemption is supported;
receiving, after sending the capability response message, a control message comprising a radio network temporary identifier (RNTI) for reception of an uplink preemption indication; and
receiving downlink control information (DCI) associated with the RNTI, wherein the DCI indicates uplink preemption of at least one uplink resource.

8. The method of claim 7 , further comprising:
receiving second DCI associated with a second RNTI, wherein the second DCI indicates downlink preemption of at least one downlink resource,
wherein the control message further comprises the second RNTI for reception of a downlink preemption indication.

9. The method of claim 7 , further comprising:
based on the DCI:
canceling a scheduled transmission of a second message; and
sending a third message.

10. The method of claim 7 , further comprising:
sending, via a first uplink radio resource of an uplink shared channel, a first portion of uplink data; and
based on the DCI indicating a second uplink radio resource is preempted, not sending a second portion of the uplink data.

11. The method of claim 7 , wherein:
the receiving the capability request message comprises receiving the capability request message from a base station;
the sending the capability response message comprises sending the capability response message to the base station; and
the receiving the control message comprises receiving the control message from the base station.

12. The method of claim 7 , wherein the capability parameters comprise a second capability parameter indicating that downlink preemption is supported; and
wherein the control message further comprises a second RNTI for reception of a downlink preemption indication.

13. The method of claim 7 , wherein the capability response message indicates that downlink preemption is not supported.

14. The method of claim 13 , wherein the control message does not comprise a second RNTI for reception of a downlink preemption indication.

15. A method comprising:
receiving, by a base station, a message comprising:
a first capability parameter indicating that downlink preemption is supported; and
a second capability parameter indicating that uplink preemption is supported;

sending, after receiving the message, a control message comprising:
a first radio network temporary identifier (RNTI) for reception of a downlink preemption indication; and
a second RNTI for reception of an uplink preemption indication; and

sending at least one downlink control channel transmission comprising at least one of:
first downlink control information (DCI), associated with the first RNTI, indicating downlink preemption of at least one downlink resource; or
second DCI, associated with the second RNTI, indicating uplink preemption of at least one uplink resource.

16. The method of claim 15 , further comprising:
based on the second DCI indicating the uplink preemption, canceling reception of a scheduled transmission of uplink data.

17. The method of claim 15 , further comprising:
sending a capability request comprising a request for capability parameters,
wherein the receiving the message is based on the capability request.

18. The method of claim 15 , wherein:
the receiving the message comprises receiving the message from at least one first wireless device; and
the sending the control message comprises sending the control message to the at least one first wireless device.

19. The method of claim 18 , further comprising:
receiving, from at least one second wireless device, a second capability message comprising a third capability parameter indicating that uplink preemption is not supported; and
sending, to the at least one second wireless device and after receiving the second capability message, a second control message comprising the first RNTI, wherein the second control message does not comprise the second RNTI.

20. The method of claim 15 , further comprising:
receiving, from at least one wireless device, a second capability message comprising a third capability parameter indicating that uplink preemption is not supported; and
sending, after receiving the second capability message, a second control message, wherein the second control message does not comprise the second RNTI.

21. The method of claim 15 , further comprising:
receiving, from at least one wireless device, a second capability message comprising a third capability parameter indicating that downlink preemption is supported; and
sending, after receiving the second capability message, a second control message comprising the first RNTI, wherein the second control message does not comprise the second RNTI.

22. The method of claim 15 , further comprising:
sending, via a first downlink radio resource of a downlink shared channel, a first portion of a data packet; and
canceling a scheduled tra

Assignees

• Comcast Cable Comm Llc

Inventors

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

Classifications

• H04W72/23 Primary

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

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title

• H04W72/044

  based on the type of the allocated resource · CPC title

• H04W72/54

  based on quality criteria · CPC title

• H04W72/042

  Electricity · mapped topic