# US 11,910,415 B2 · Combining channel busy ratios received from multiple user equipments

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- Number: US 11,910,415 B2
- Document ID: US11910415B2
- Status: Granted
- Kind: B2
- Application number: 17/654,850
- Filed: 2022-03-15
- Published: 2022-10-27
- Granted: 2024-02-20
- Earliest claimed: 2021-04-23
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Tugcan Aktas; Wei Yang; Seyedkianoush Hosseini
- Web page: https://patentgrep.com/patent/US11910415B2

## CPC

- H04W 72/52: based on load
- H04W 72/121: for groups of terminals or users
- H04W 72/535: {based on resource usage policies}
- H04W 72/54: based on quality criteria
- H04W 72/569: {of the traffic information}
- H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04W 72/02: Selection of wireless resources by user or terminal
- H04W 72/51: based on terminal or device properties
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitting (Tx) user equipment (UE) may receive, from a plurality of receiving (Rx) UEs, indications of channel busy ratios (CBRs) associated with the plurality of Rx UEs, respectively. The Tx UE may combine the CBRs to obtain a combined CBR associated with the Tx UE. The Tx UE may adjust a resource utilization based at least in part on the combined CBR associated with the Tx UE. Numerous other aspects are described.

## Claims

### Claim 1

An apparatus for wireless communication at a transmitting (Tx) user equipment (UE), comprising:
a memory; and
one or more processors coupled to the memory, the one or more processors, individually or collectively, configured to:
receive, from a plurality of receiving (Rx) UEs, indications of channel busy ratios (CBRs) associated with the plurality of Rx UEs, respectively;
combine the CBRs to obtain a combined CBR associated with the Tx UE, by selecting a subset of CBRs from the CBRs associated with the plurality of Rx UEs based at least in part on one of:
signal measurements associated with each CBR in the subset of CBRs,
one or more of estimated distances or pathloss values associated with the plurality of Rx UEs, or
zone identifiers associated with the plurality of Rx UEs,
wherein the combined CBR associated with the Tx UE is based at least in part on the subset of CBRs; and
adjust a resource utilization based at least in part on the combined CBR associated with the Tx UE.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the one or more processors, to receive the indications of CBRs, are configured to:
receive at least one indication of a CBR from an Rx UE via a sidelink interface between the Tx UE and the Rx UE;
receive the indications of CBRs via broadcasts from the plurality of Rx UEs;
receive the indications of CBRs in slots that precede or succeed reporting slots associated with the Tx UE; or
receive the indications of CBRs in slots that correspond to reporting slots associated with the Tx UE.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the indications of CBRs are included in inter-UE coordination reports.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the one or more processors are further configured to:
receive, from a network entity, a configuration that defines a plurality of slots for receiving the indications of CBRs.

### Claim 5 (depends on 4)

The apparatus of claim 4, wherein:
the configuration limits a maximum quantity of inter-UE coordination reports with CBRs to be received from the plurality of Rx UEs;
the configuration is based at least in part on a capability of the Tx UE; or
the plurality of slots satisfy a threshold level that enables the Tx UE to periodically enter a power saving mode.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the one or more processors, to combine the CBRs to obtain the combined CBR, are configured to combine the CBRs based at least in part on an arithmetic average or a weighted average of the CBRs.

### Claim 7

An apparatus for wireless communication at a transmitting (Tx) user equipment (UE), comprising:
a memory; and
one or more processors coupled to the memory, the one or more processors, individually or collectively, configured to:
receive, from a plurality of receiving (Rx) UEs, indications of channel busy ratios (CBRs) associated with the plurality of Rx UEs, respectively;
combine the CBRs to obtain a combined CBR associated with the Tx UE, by:
ranking the CBRs in an order;
selecting, from the CBRs ranked in the order, a subset of CBRs; and
calculating an average value from the subset of CBRs, wherein the average value is an arithmetic average value or a weighted average value; and
adjust a resource utilization based at least in part on the combined CBR associated with the Tx UE.

### Claim 8 (depends on 7)

The apparatus of claim 7, wherein:
the order is a descending order, and the subset of CBRs corresponds to a quantity of highest CBRs in the CBRs associated with the plurality of Rx UEs; or
the order is an ascending order, and the subset of CBRs corresponds to a quantity of lowest CBRs in the CBRs associated with the plurality of Rx UEs.

### Claim 9 (depends on 1)

The apparatus of claim 1, wherein:
the one or more processors, to receive the indications of CBRs from the plurality of Rx UEs, are configured to receive the indications of CBRs from different clusters of Rx UEs; and
the one or more processors, to combine the CBRs to obtain the combined CBR, are configured to:
calculate an average value for each cluster of Rx UEs in the different clusters of Rx UEs, wherein the average value is an arithmetic average value or a weighted average value; and
determine the combined CBR based at least in part on the average value for each cluster of Rx UEs in the different clusters of Rx UEs.

### Claim 10

An apparatus for wireless communication at a transmitting (Tx) user equipment (UE), comprising:
a memory; and
one or more processors coupled to the memory, the one or more processors, individually or collectively, configured to:
receive, from a plurality of receiving (Rx) UEs, indications of channel busy ratios (CBRs) associated with the plurality of Rx UEs, respectively;
combine the CBRs to obtain a combined CBR associated with the Tx UE based at least in part on one or more of:
a latency requirement of a packet to be transmitted;
a priority of the packet;
a remaining packet delay budget of the packet;
a utilization of hybrid automatic repeat request acknowledgements versus blind transmissions by the Tx UE;
a cast type;
a reliability requirement of a communication session;
a utilization of power control by the Tx UE; or
a communication range; and
adjust a resource utilization based at least in part on the combined CBR associated with the Tx UE.

### Claim 11

An apparatus for wireless communication at a transmitting (Tx) user equipment (UE), comprising:
a memory; and
one or more processors coupled to the memory, the one or more processors, individually or collectively, configured to:
receive, from a plurality of receiving (Rx) UEs, indications of channel busy ratios (CBRs) associated with the plurality of Rx UEs, respectively;
filter the CBRs based at least in part on a beam index;
combine the CBRs to obtain a combined CBR associated with the Tx UE; and
adjust a resource utilization based at least in part on the combined CBR associated with the Tx UE.

### Claim 12 (depends on 1)

The apparatus of claim 1, wherein the one or more processors, to combine the CBRs, are configured to:
combine the CBRs received from the plurality of Rx UEs with CBR measurements performed by the Tx UE at CBR measurement occasions to obtain the combined CBR associated with the Tx UE;
combine the CBRs per resource pool or per bandwidth part; or
combine the CBRs associated with an active component carrier or a plurality of component carriers when the Tx UE is configured with sidelink carrier aggregation.

### Claim 13

A method of wireless communication performed by a transmitting (Tx) user equipment (UE), comprising:
receiving, from a plurality of receiving (Rx) UEs, indications of channel busy ratios (CBRs) associated with the plurality of Rx UEs, respectively;
combining the CBRs to obtain a combined CBR associated with the Tx UE comprising selecting a subset of CBRs from the CBRs associated with the plurality of Rx UEs based at least in part on one of:
signal measurements associated with each CBR in the subset of CBRs,
one or more of estimated distances or pathloss values associated with the plurality of Rx UEs, or
zone identifiers associated with the plurality of Rx UEs,
wherein the combined CBR associated with the Tx UE is based at least in part on the subset of CBRs; and
adjusting a resource utilization based at least in part on the combined CBR associated with the Tx UE.

### Claim 14 (depends on 13)

The method of claim 13, wherein receiving the indications of CBRs comprises:
receiving at least one indication of a CBR from an Rx UE via a sidelink interface between the Tx UE and the Rx UE;
receiving the indications of CBRs via broadcasts from the plurality of Rx UEs;
receiving the indications of CBRs in slots that precede or succeed reporting slots associated with the Tx UE; or
receiving the indications of CBRs in slots that correspond to reporting slots associated with the Tx UE.

### Claim 15 (depends on 13)

The method of claim 13, wherein the indications of CBRs are included in inter-UE coordination reports.

### Claim 16 (depends on 13)

The method of claim 13, further comprising:
receiving, from a network entity, a configuration that defines a plurality of slots for receiving the indications of CBRs.

### Claim 17 (depends on 16)

The method of claim 16, wherein:
the configuration limits a maximum quantity of inter-UE coordination reports with CBRs to be received from the plurality of Rx UEs;
the configuration is based at least in part on a capability of the Tx UE; or
the plurality of slots satisfy a threshold level that enables the Tx UE to periodically enter a power saving mode.

### Claim 18 (depends on 13)

The method of claim 13, wherein combining the CBRs to obtain the combined CBR comprises combining the CBRs based at least in part on an arithmetic average or a weighted average of the CBRs.

### Claim 19

A method of wireless communication performed by a transmitting (Tx) user equipment (UE), comprising:
receiving, from a plurality of receiving (Rx) UEs, indications of channel busy ratios (CBRs) associated with the plurality of Rx UEs, respectively;
combining the CBRs to obtain a combined CBR associated with the Tx UE, comprising:
ranking the CBRs in an order;
selecting, from the CBRs ranked in the order, a subset of CBRs; and
calculating an average value from the subset of CBRs, wherein the average value is an arithmetic average value or a weighted average value; and
adjusting a resource utilization based at least in part on the combined CBR associated with the Tx UE.

### Claim 20 (depends on 19)

The method of claim 19, wherein:
the order is a descending order, and the subset of CBRs corresponds to a quantity of highest CBRs in the CBRs associated with the plurality of Rx UEs; or
the order is an ascending order, and the subset of CBRs corresponds to a quantity of lowest CBRs in the CBRs associated with the plurality of Rx UEs.

### Claim 21 (depends on 13)

The method of claim 13, wherein:
receiving the indications of CBRs from the plurality of Rx UEs comprises receiving the indications of CBRs from different clusters of Rx UEs; and
combining the CBRs to obtain the combined CBR comprises:
calculating an average value for each cluster of Rx UEs in the different clusters of Rx UEs, wherein the average value is an arithmetic average value or a weighted average value; and
determining the combined CBR based at least in part on the average value for each cluster of Rx UEs in the different clusters of Rx UEs.

### Claim 22

A method of wireless communication performed by a transmitting (Tx) user equipment (UE), comprising:
receiving, from a plurality of receiving (Rx) UEs, indications of channel busy ratios (CBRs) associated with the plurality of Rx UEs, respectively;
combining the CBRs to obtain a combined CBR associated with the Tx UE based at least in part on one or more of:
a latency requirement of a packet to be transmitted;
a priority of the packet;
a remaining packet delay budget of the packet;
a utilization of hybrid automatic repeat request acknowledgements versus blind transmissions by the Tx UE;
a cast type;
a reliability requirement of a communication session;
a utilization of power control by the Tx UE; or
a communication range; and
adjusting a resource utilization based at least in part on the combined CBR associated with the Tx UE.

### Claim 23

A method of wireless communication performed by a transmitting (Tx) user equipment (UE), comprising:
receiving, from a plurality of receiving (Rx) UEs, indications of channel busy ratios (CBRs) associated with the plurality of Rx UEs, respectively;
filtering the CBRs based at least in part on a beam index;
combining the CBRs to obtain a combined CBR associated with the Tx UE; and
adjusting a resource utilization based at least in part on the combined CBR associated with the Tx UE.

### Claim 24 (depends on 13)

The method of claim 13, wherein combining the CBRs comprises:
combining the CBRs received from the plurality of Rx UEs with CBR measurements performed by the Tx UE at CBR measurement occasions to obtain the combined CBR associated with the Tx UE;
combining the CBRs per resource pool or per bandwidth part; or
combining the CBRs associated with an active component carrier or a plurality of component carriers when the Tx UE is configured with sidelink carrier aggregation.

### Claim 25

A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a transmitting (Tx) user equipment (UE), cause the Tx UE to:
receive, from a plurality of receiving (Rx) UEs, indications of channel busy ratios (CBRs) associated with the plurality of Rx UEs, respectively;
combine the CBRs to obtain a combined CBR associated with the Tx UE, by selecting a subset of CBRs from the CBRs associated with the plurality of Rx UEs based at least in part on one of:
signal measurements associated with each CBR in the subset of CBRs,
one or more of estimated distances or pathloss values associated with the plurality of Rx UEs, or
zone identifiers associated with the plurality of Rx UEs,
wherein the combined CBR associated with the Tx UE is based at least in part on the subset of CBRs; and
adjust a resource utilization based at least in part on the combined CBR associated with the Tx UE.

### Claim 26

A transmitting (Tx) apparatus for wireless communication, comprising:
means for receiving, from a plurality of receiving (Rx) apparatuses, indications of channel busy ratios (CBRs) associated with the plurality of Rx apparatuses, respectively;
means for combining the CBRs to obtain a combined CBR associated with the Tx apparatus, by selecting a subset of CBRs from the CBRs associated with the plurality of Rx UEs based at least in part on one of:
signal measurements associated with each CBR in the subset of CBRs,
one or more of estimated distances or pathloss values associated with the plurality of Rx UEs, or
zone identifiers associated with the plurality of Rx UEs,
wherein the combined CBR associated with the Tx UE is based at least in part on the subset of CBRs; and
means for adjusting a resource utilization based at least in part on the combined CBR associated with the Tx apparatus.