Preempting, overwriting, or canceling symbols in a slot format indicator allocation

Patent metadata

Field	Value
Publication number	US-11849434-B2
Application number	US-202117249854-A
Country	US
Kind code	B2
Filing date	Mar 16, 2021
Priority date	Mar 18, 2020
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may generate a request to overwrite or cancel a communication mode of a symbol in a slot of a communication with a base station based at least in part on interference in communications with the base station on one or more frequency bands used for carrier aggregation and transmit the request to the base station. Numerous other aspects are provided.

First claim

What is claimed is:

1. A user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors coupled to the one or more memories, the one or more processors configured to:
generate a request to overwrite or cancel a communication mode of a symbol in a slot of a communication with a base station such that the symbol becomes a gap symbol or a flexible symbol based at least in part on interference in communications with the base station on one or more frequency bands used for carrier aggregation; and
transmit the request to the base station.

2. The UE of claim 1 , wherein the one or more processors are further configured to:
receive an indication that the request was granted; and
communicate with the base station using another communication mode for the symbol in the slot based at least in part on receiving the indication.

3. The UE of claim 1 , wherein the communication mode is an uplink communication mode, and wherein the request is to overwrite the uplink communication mode of the symbol with a downlink communication mode.

4. The UE of claim 1 , wherein the request is for the base station to prioritize a downlink communication mode over an uplink communication mode for the symbol.

5. The UE of claim 1 , wherein the communication mode is a downlink communication mode, and wherein the request is to overwrite the downlink communication mode of the symbol with an uplink communication mode.

6. The UE of claim 1 , wherein the request is for the base station to prioritize an uplink communication mode over a downlink communication mode for the symbol.

7. The UE of claim 1 , wherein the request corresponds to the symbol in a plurality of slots.

8. The UE of claim 1 , wherein the interference is based at least in part on one or more of movement of the UE associated with Doppler fading, clutter in a channel environment, beam blockage, or a combination thereof.

9. The UE of claim 1 , wherein the one or more processors, when transmitting the request, are configured to:
transmit the request in uplink control information on a physical uplink channel for the slot.

10. A base station for wireless communication, comprising:
one or more memories; and
one or more processors coupled to the one or more memories, the one or more processors configured to:
determine to overwrite or cancel a communication mode of a symbol in a slot of a communication with a user equipment (UE) such that the symbol becomes a gap symbol or a flexible symbol based at least in part on receiving a request from the UE to overwrite or cancel the communication mode of the symbol; and
communicate with the UE using another communication mode for the symbol in the slot based at least in part on determining to overwrite or cancel the communication mode of the symbol.

11. The base station of claim 10 , wherein the one or more processors are further configured to:
transmit an indication that the request was granted to the UE.

12. The base station of claim 11 , wherein the communication mode is an uplink communication mode, and wherein the indication is to overwrite the uplink communication mode of the symbol with a downlink communication mode.

13. The base station of claim 11 , wherein the communication mode is a downlink communication mode, and wherein the indication is to overwrite the downlink communication mode of the symbol with an uplink communication mode.

14. The base station of claim 10 , wherein the request from the UE is for the base station to prioritize a downlink communication mode over an uplink communication mode for the symbol.

15. The base station of claim 10 , wherein the request from the UE is for the base station to prioritize an uplink communication mode over a downlink communication mode for the symbol.

16. The base station of claim 10 , wherein the request is to cancel the communication mode of the symbol such that the symbol becomes a gap symbol or a flexible symbol.

17. The base station of claim 10 , wherein the request corresponds to the symbol in a plurality of slots.

18. The base station of claim 10 , wherein the one or more processors, when determining to overwrite or cancel the communication mode of the symbol, are configured to:
determine to overwrite or cancel the communication mode of the symbol based at least in part on movement of the UE, clutter detected by the UE, beam blockage, or a combination thereof.

19. The base station of claim 10 , wherein the one or more processors, when receiving the request, are configured to:
receive the request in uplink control information on a physical uplink channel for the slot.

20. A method of wireless communication performed by a user equipment (UE), comprising:
generating a request to overwrite or cancel a communication mode of a symbol in a slot of a communication with a base station such that the symbol becomes a gap symbol or a flexible symbol based at least in part on interference in communications with the base station on one or more frequency bands used for carrier aggregation; and
transmitting the request to the base station.

21. The method of claim 20 , further comprising:
receiving an indication that the request was granted; and
communicating with the base station using another communication mode for the symbol in the slot based at least in part on receiving the indication.

22. The method of claim 20 , wherein the communication mode is an uplink communication mode, and wherein the request is to overwrite the uplink communication mode of the symbol with a downlink communication mode.

23. The method of claim 20 , wherein the request is for the base station to prioritize a downlink communication mode over an uplink communication mode for the symbol.

24. The method of claim 20 , wherein the communication mode is a downlink communication mode, and wherein the request is to overwrite the downlink communication mode of the symbol with an uplink communication mode.

25. The method of claim 20 , wherein the request is for the base station to prioritize an uplink communication mode over a downlink communication mode for the symbol.

26. A method of wireless communication performed by a base station, comprising:
determining to overwrite or cancel a communication mode of a symbol in a slot of a communication with a user equipment (UE) such that the symbol becomes a gap symbol or a flexible symbol based at least in part on receiving a request from the UE to overwrite or cancel the communication mode of the symbol; and
communicating with the UE to use another communication mode for the symbol in the slot based at least in part on determining to overwrite or cancel the communication mode of the symbol.

27. The method of claim 26 , further comprising transmitting an indication that the request was granted to the UE.

28. The method of claim 27 , the communication mode is a downlink communication mode, and wherein the indication is to overwrite the downlink communication mode of the symbol with an uplink communication mode.

29. The method of claim 27 , the communication mode is an uplink communication mode, and wherein the indication is to overwrite the uplink communication mode of the symbol with a downlink communication mode.

30. The method of claim 26 , wherein the request corresponds to the symbol in a plurality of slots.

Assignees

• Qualcomm Inc

Inventors

• Raghavan Vasanthan
• Luo Tao
• Li Junyi

Classifications

• H04W72/0446 Primary

  Resources in time domain, e.g. slots or frames · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/56

  based on priority criteria · CPC title

• H04L5/0096 Primary

  Indication of changes in allocation · CPC title

• H04W72/541

  using the level of interference · CPC title