Beamformed channel busy ratio

Patent metadata

Field	Value
Publication number	US-12543200-B2
Application number	US-202318171733-A
Country	US
Kind code	B2
Filing date	Feb 21, 2023
Priority date	Jun 20, 2019
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may measure a per-beam channel busy ratio (CBR) for each of one or more beams configured on the sidelink receiver for transmitting or receiving sidelink transmissions including a first CBR for a first beam that is to be used for receiving a sidelink transmission transmitted by a first sidelink transmitter; and may transmit an indication of the per-beam CBR. In some aspects, a user equipment may receive information associated with a per-beam CBR including a first CBR for a first beam to be used by a sidelink receiver for receiving a sidelink transmission transmitted by the sidelink transmitter, and may selectively transmit the sidelink transmission for reception by the sidelink transmitter using the first beam based at least in part on the indication of the per-beam CBR. Numerous other aspects are provided.

First claim

What is claimed is:

1 . A method of wireless communication performed by a sidelink receiver, comprising:
receiving a sidelink transmission from a first sidelink transmitter; and transmitting a busy signal to a second sidelink transmitter while receiving the sidelink transmission from the first sidelink transmitter, the busy signal indicating that a channel associated with the sidelink transmission is busy or is occupied, and the busy signal being transmitted on a particular frequency indicating a frequency band associated with the sidelink transmission.

2 . The method of claim 1 , wherein a codeword or a sequence transmitted in the busy signal indicates occupancy of a set of resources of the frequency band associated with the sidelink transmission.

3 . The method of claim 1 , wherein a frequency band of the busy signal overlaps with the frequency band associated with the sidelink transmission.

4 . The method of claim 1 , wherein the busy signal is frequency division multiplexed with the frequency band associated with the sidelink transmission.

5 . The method of claim 1 , wherein a beam or a panel on which the busy signal is transmitted is different from a beam or a panel on which the sidelink transmission is being received.

6 . The method of claim 1 , wherein the busy signal is transmitted on multiple beams or on multiple panels.

7 . The method of claim 1 , wherein a beam on which the busy signal is transmitted has a different characteristic than the beam on which the sidelink transmission is received.

8 . The method of claim 1 , wherein the busy signal indicates a receive beam used to receive the sidelink transmission, and wherein the receive beam is identified with respect to a sidelink synchronization beam.

9 . The method of claim 1 , wherein the busy signal indicates a direction of a receive beam used to receive the sidelink transmission.

10 . The method of claim 1 , wherein the busy signal indicates an identity of the sidelink receiver.

11 . A method of wireless communication performed by a sidelink transmitter, comprising:
receiving, from a first sidelink receiver, a busy signal using a beam associated with a first sidelink transmission received by the first sidelink receiver, the busy signal indicating that a channel associated with the first sidelink transmission is busy or is occupied, the busy signal being received in a time period during which the first sidelink receiver is receiving the first sidelink transmission, and the busy signal being received on a particular frequency indicating a frequency band associated with the first sidelink transmission; and selectively transmitting, based at least in part on the busy signal, a second sidelink transmission to second sidelink receiver using the beam.

12 . The method of claim 11 , wherein a codeword or a sequence received in the busy signal indicates occupancy of a set of resources of the frequency band associated with the first sidelink transmission.

13 . The method of claim 11 , wherein a frequency band of the busy signal overlaps with the frequency band associated with the first sidelink transmission.

14 . The method of claim 11 , wherein the busy signal is frequency division multiplexed with the frequency band associated with the first sidelink transmission.

15 . The method of claim 11 , wherein the busy signal indicates a receive beam used to receive the first sidelink transmission, and wherein the receive beam is identified with respect to a sidelink synchronization beam.

16 . The method of claim 11 , wherein the busy signal indicates a direction of a receive beam used to receive the first sidelink transmission.

17 . The method of claim 11 , wherein the busy signal indicates an identity of the first sidelink receiver.

18 . The method of claim 11 , wherein a per-beam channel busy ratio (CBR) for a receive beam to be used by the second sidelink receiver for receiving the second sidelink transmission from the sidelink transmitter is computed based at least in part on the busy signal.

19 . A sidelink receiver for wireless communication, comprising:
at least one memory; and at least one processor communicatively coupled with the at least one memory, the at least one processor operable to cause the sidelink receiver to:
receive a sidelink transmission from a first sidelink transmitter; and
transmit a busy signal to a second sidelink transmitter while receiving the sidelink transmission from the first sidelink transmitter, the busy signal indicating that a channel associated with the sidelink transmission is busy or is occupied, and a frequency on which the busy signal is transmitted indicating a frequency band associated with the sidelink transmission.

20 . The sidelink receiver of claim 19 , wherein a codeword or a sequence transmitted in the busy signal indicates occupancy of a set of resources of the frequency band associated with the sidelink transmission.

21 . The sidelink receiver of claim 19 , wherein a frequency band of the busy signal overlaps with the frequency band associated with the sidelink transmission.

22 . The sidelink receiver of claim 19 , wherein the busy signal is frequency division multiplexed with the frequency band associated with the sidelink transmission.

23 . The sidelink receiver of claim 19 , wherein a beam or a panel on which the busy signal is transmitted is different from a beam or a panel on which the sidelink transmission is being received.

24 . The sidelink receiver of claim 19 , wherein the busy signal is transmitted on multiple beams or on multiple panels.

25 . A sidelink transmitter for wireless communication, comprising:
at least one memory; and at least one processor communicatively coupled with the at least one memory, the at least one processor operable to cause the sidelink transmitter to:
receive, from a first sidelink receiver, a busy signal using a beam associated with a first sidelink transmission received by the first sidelink receiver, the busy signal indicating that a channel associated with the first sidelink transmission is busy or is occupied, the busy signal being received in a time period during which the first sidelink receiver is receiving the first sidelink transmission, and a frequency on which the busy signal is received indicating a frequency band associated with the first sidelink transmission; and
selectively transmit, based at least in part on the busy signal, a second sidelink transmission to second sidelink receiver using the beam.

26 . The sidelink transmitter of claim 25 , wherein a codeword or a sequence received in the busy signal indicates occupancy of a set of resources of the frequency band associated with the first sidelink transmission.

27 . The sidelink transmitter of claim 25 , wherein a frequency band of the busy signal overlaps with the frequency band associated with the first sidelink transmission.

28 . The sidelink transmitter of claim 25 , wherein the busy signal is frequency division multiplexed with the frequency band associated with the first sidelink transmission.

29 . The sidelink transmitter of claim 25 , wherein the busy signal indicates a receive beam used to receive the first sidelink transmission, and wherein the receive beam is identified with respect to a sidelink synchronization beam.

30 . The sidelink t

Assignees

• Qualcomm Inc

Inventors

• Ryu Jung Ho
• Gulati Kapil
• Li Junyi
• Akkarakaran Sony
• Luo Tao

Classifications

• H04W92/18

  between terminal devices · CPC title

• H04W72/20

  Control channels or signalling for resource management · CPC title

• H04W72/046

  the resource being in the space domain, e.g. beams · CPC title

• H04W24/10

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04W8/26

  Network addressing or numbering for mobility support · CPC title