Enhanced beam selection for NR sidelink communication in FR2

Patent metadata

Field	Value
Publication number	US-12438587-B2
Application number	US-202318508929-A
Country	US
Kind code	B2
Filing date	Nov 14, 2023
Priority date	Nov 23, 2022
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

Embodiments of the present disclosure provide for selecting a first candidate beam for communication with a first transmitter (Tx) user equipment (UE) and a second candidate beam for communication with a second Tx UE; determining a first radio resource expected to be used by the first Tx UE for a first radio transmission to a receiver UE and a second radio resource expected to be used by the second Tx UE for a second radio transmission to the receiver UE; determining that the first radio resource overlaps in time with the second radio resource, and that the first candidate beam does not match the second candidate beam; and determining whether to: receive the first radio transmission using the first candidate beam, receive the second radio transmission using the second candidate beam, or receive the first radio transmission and the second radio transmission using a third candidate beam.

First claim

What is claimed is:

1. An apparatus comprising:
at least one processor; and
at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
select a first candidate beam for communication with a first transmitter user equipment;
select a second candidate beam for communication with a second transmitter user equipment;
determine a first radio resource expected to be used by the first transmitter user equipment for a first radio transmission to a receiver user equipment;
determine a second radio resource expected to be used by the second transmitter user equipment for a second radio transmission to the receiver user equipment;
determine that the first radio resource overlaps in time, at least partially, with the second radio resource, and determine that the first candidate beam does not match the second candidate beam;
determine whether to:
receive the first radio transmission using the first candidate beam,
receive the second radio transmission using the second candidate beam, or
receive the first radio transmission and the second radio transmission using a third candidate beam; and

select a beam for reception of the first radio transmission and the second radio transmission based at least partially on at least one of:
a first priority of the first radio transmission and a second priority of the second radio transmission;
an angular distance between a first expected angle-of-arrival of the first radio transmission and a second expected angle-of-arrival of the second radio transmission; or
a first expected interference in the first radio resource expected to be used by the first transmitter user equipment or a second expected interference in the second radio resource expected to be used by the second transmitter user equipment.

2. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, cause the apparatus to:
determine to receive the first radio transmission from the first transmitter user equipment using the first candidate beam when the first radio transmission of the first transmitter user equipment has a higher priority than the second radio transmission of the second transmitter user equipment; and
determine to receive the second radio transmission from the second transmitter user equipment using the second candidate beam when the second radio transmission of the second transmitter user equipment has a higher priority than the first radio transmission of the first transmitter user equipment.

3. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, cause the apparatus to:
determine, based on measurements using a plurality of candidate beams of the receiver user equipment, a first plurality of received signal strengths associated with the first transmitter user equipment and a second plurality of received signal strengths associated with the second transmitter user equipment; and
select the third candidate beam for reception of both the first radio transmission from the first transmitter user equipment and the second radio transmission from the second transmitter user equipment, wherein the beam selection is based on both the first plurality of received signal strengths and the second plurality of received signal strengths.

4. The apparatus of claim 3 , wherein the instructions, when executed by the at least one processor, cause the apparatus at least to:
determine, for the plurality of candidate beams, a respective plurality of smaller received signal strengths of a respective first received signal strength of the first plurality of received signal strengths associated with the first transmitter user equipment and a respective second received signal strength of the second plurality of received signal strengths associated with the second transmitter user equipment;
determine a larger received signal strength of the plurality of smaller received signal strengths; and
select a beam for reception of both the first radio transmission from the first transmitter user equipment and the second radio transmission from the second transmitter user equipment that is associated with the larger received signal strength of the plurality of smaller received signal strengths.

5. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, cause the apparatus at least to:
select the third candidate beam for reception of both the first radio transmission from the first transmitter user equipment and the second radio transmission from the second transmitter user equipment, based at least partially on the determination that the first candidate beam does not match the second candidate beam.

6. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, cause the apparatus at least to:
select the third candidate beam for reception of both the first radio transmission from the first transmitter user equipment and the second radio transmission from the second transmitter user equipment, based at least partially on the determination that the first radio resource overlaps in time, at least partially, with the second radio resource.

7. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, cause the apparatus at least to:
select the third candidate beam for reception of both the first radio transmission from the first transmitter user equipment and the second radio transmission from the second transmitter user equipment, based at least partially on the receiver user equipment being incapable of simultaneously receiving with both the first candidate beam and the second candidate beam.

8. An apparatus comprising:
at least one processor; and
at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
select a first candidate beam for communication with a first receiver user equipment;
select a second candidate beam for communication with a second receiver user equipment;
determine a first radio resource for transmitting a first radio transmission to the first receiver user equipment;
determine a second radio resource for transmitting a second radio transmission to the second receiver user equipment;
determine that the first radio resource overlaps in time, at least partially, with the second radio resource, and determine that the first candidate beam does not match the second candidate beam;
determine whether to:
transmit the first radio transmission using the first candidate beam,
transmit the second radio transmission using the second candidate beam, or
transmit the first radio transmission and the second radio transmission using

a third candidate beam; and
select a beam for transmission of the first radio transmission and the second radio transmission based at least partially on at least one of:
a first priority of the first radio transmission and a second priority of the second radio transmission;
an angular distance between a first expected angle-of-departure of the first radio transmission and a second expected angle-of-departure of the second radio transmission; or
a first expected interference in the first radio resource for transmitting the first radio transmission to the first receiver user equipment or a second expected interference in the second radio resource for transmitting the second radio transmission to the second receiver user equipment.

9. The apparatus of claim 8 , wherein the instructions, when executed by the at least one processor, cause the apparatus to:
determine to transmit the first radio transmission to the first receiver user equipment using the first ca

Assignees

• Nokia Technologies Oy

Inventors

• Medina Daniel
• Wildschek Torsten
• Kiilerich Pratas Nuno Manuel
• Kucera Stepan
• Tan Jun

Classifications

• H04B17/318

  Received signal strength · CPC title

• H04B7/088

  using beam selection · CPC title

• H04B7/06954

  Sidelink beam training with support from third instance, e.g. the third instance being a base station · CPC title

• H04B7/0695 Primary

  using beam selection · CPC title