# US 11,445,342 B2 · Enhancements to pedestrian to vehicles (P2V) communications

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- Number: US 11,445,342 B2
- Document ID: US11445342B2
- Status: Granted
- Kind: B2
- Application number: 16/833,354
- Filed: 2020-03-27
- Published: 2021-09-30
- Granted: 2022-09-13
- Earliest claimed: 2020-03-27
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Francis Ngai; Feng Lu; Joel Benjamin Linsky
- Web page: https://patentgrep.com/patent/US11445342B2

## CPC

- H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W 4/023: {using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds}
- H04W 4/029: Location-based management or tracking services
- H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to mechanisms for enhancing pedestrian to vehicle (P2V) communications. For example, a pedestrian user equipment (P-UE) may detect a change in at least one of: location or motion of the UE adjust, based on the detection, behavior of one or more features of the UE related to P2V transmissions.

## Claims

### Claim 1

A method for wireless communications by a user equipment (UE), comprising:
detecting a change in at least one of: location or motion of the UE; and
adjusting, based on the detection, behavior of one or more features of the UE related to pedestrian to vehicle (P2V) transmissions, wherein the adjusting comprises disabling the P2V transmissions when:
based on the detecting, the UE is detected to be inside a vehicle, and
cellular vehicle-to-everything (C-V2X) communications are enabled in the vehicle.

### Claim 2 (depends on 1)

The method of claim 1, wherein:
the detecting comprises detecting a change in motion or net displacement of the UE; and
the adjusting comprises adjusting a frequency of the P2V transmissions.

### Claim 3 (depends on 1)

The method of claim 1, wherein based on the detecting, when the UE is not in proximity to a vehicle, the adjusting comprises disabling P2V transmissions.

### Claim 4 (depends on 1)

The method of claim 1, further comprising:
further detecting the UE is no longer inside the vehicle or that the C-V2X communications are no longer enabled in the vehicle; and
the adjusting comprises re-enabling P2V transmissions from the UE based on the further detection.

### Claim 5 (depends on 1)

The method of claim 1, wherein wherein the detecting comprises detecting the UE is inside a vehicle based on detection of a transmitted beacon indicating that C-V2X communications are enabled in the vehicle.

### Claim 6 (depends on 5)

The method of claim 5, wherein the transmitted beacon also indicates that C-V2X communications are enabled and operational in the vehicle.

### Claim 7 (depends on 5)

The method of claim 5, further comprising re-enabling the P2V transmissions from the UE when the transmitted beacon is not detected within a certain period.

### Claim 8 (depends on 1)

The method of claim 1, wherein the UE keeps the P2V transmissions disabled even when the vehicle is not moving and the C-V2X communications are enabled in the vehicle.

### Claim 9 (depends on 1)

The method of claim 1, further comprising re-allocating resources previously used for the P2V transmission to other functions.

### Claim 10

A method for wireless communications by an apparatus in a vehicle, comprising:
detecting a user equipment (UE) that supports pedestrian to vehicle (P2V) transmissions is inside the vehicle; and
sending, in response to the detection, one or more beacons that indicate cellular vehicle to everything (C-V2X) communications are operational in the vehicle.

### Claim 11 (depends on 10)

The method of claim 10, wherein the one or more beacons also indicate the UE is inside the vehicle.

### Claim 12 (depends on 10)

The method of claim 10, further comprising ceasing sending the one or more beacons in response to detecting the UE is no longer inside the vehicle.

### Claim 13 (depends on 10)

The method of claim 10, further comprising at least one of sending or updating a beacon in response to detecting a door has opened or closed.

### Claim 14 (depends on 10)

The method of claim 10, wherein a range of the one or more beacons is tuned to cover the inside of the vehicle.

### Claim 15

A user equipment (UE), comprising:
a memory comprising executable instructions; and
one or more processors configured to execute the executable instructions and cause the UE to:
detect a change in at least one of: location or motion of the UE; and
adjust, based on the detection, behavior of one or more features of the UE related to pedestrian to vehicle (P2V) transmissions, wherein, in order to adjust the behavior of the one or more features of the UE, the one or more processors are further configured to cause the UE to disable P2V transmissions when:
based on the detection, the UE is inside a vehicle, and
cellular vehicle-to-everything (C-V2X) communications is enabled in the vehicle.

### Claim 16 (depends on 15)

The UE of claim 15, wherein:
in order to detect the change in the location or the motion of the UE, the one or more processors are further configured to cause the UE to detect a change in motion or net displacement of the UE; and
in order to adjust the behavior of the one or more features of the UE, the one or more processors are further configured to cause the UE to adjust a frequency of the P2V transmissions.

### Claim 17 (depends on 15)

The UE of claim 15, wherein, in order to adjust the behavior of the one or more features of the UE, the one or more processors are configured to cause the UE to disable the P2V transmissions when, based on the detection, the UE is not in proximity to the vehicle.

### Claim 18 (depends on 15)

The UE of claim 15, wherein:
in order to detect the change in the location or the motion of the UE, the one or more processors are further configured to cause the UE to detect that the UE is no longer inside the vehicle or that the C-V2X communications are no longer enabled in the vehicle; and
in order to adjust the behavior of the one or more features of the UE, the one or more processors are further configured to cause the UE to re-enable the P2V transmissions from the UE based on the further detection.

### Claim 19 (depends on 15)

The UE of claim 15, wherein: in order to detect the change in the location or the motion of the UE, the one or more processors are configured to cause the UE to detect that the UE is inside the vehicle based on detection of a transmitted beacon indicating that the C-V2X communications are enabled in the vehicle.

### Claim 20 (depends on 19)

The UE of claim 19, wherein the transmitted beacon also indicates that the C-V2X communications are enabled and operational in the vehicle.

### Claim 21 (depends on 19)

The UE of claim 19, wherein in order to adjust the behavior of the one or more features of the UE, the one or more processors are configured to cause the UE to re-enable P2V transmissions from the UE when the transmitted beacon is not detected within a certain period.

### Claim 22 (depends on 15)

The UE of claim 15, wherein the one or more processors are further configured to cause the UE to keep the P2V transmissions disabled even when the vehicle is not moving and the C-V2X communications are enabled in the vehicle.

### Claim 23 (depends on 15)

The UE of claim 15, wherein the one or more processors are further configured to cause the UE to re-allocate resources previously used for the P2V transmission to other functions.

### Claim 24

An apparatus in a vehicle, comprising:
a memory comprising executable instructions; and
one or more processors configured to execute the executable instructions and cause the apparatus to:
detect a user equipment (UE) that supports pedestrian to vehicle (P2V) transmissions is inside the vehicle; and
send, in response to the detection, one or more beacons that indicate cellular vehicle to everything (C-V2X) communications are operational in the vehicle.

### Claim 25 (depends on 24)

The apparatus of claim 24, wherein the one or more beacons also indicate the UE is inside the vehicle.

### Claim 26 (depends on 24)

The apparatus of claim 24, wherein the one or more processors are further configured to cause the apparatus to cease sending the one or more beacons in response to detecting the UE is no longer inside the vehicle.

### Claim 27 (depends on 24)

The apparatus of claim 24, wherein the one or more processors are further configured to cause the apparatus to at least one of send or update a beacon in response to detecting a door has opened or closed.

### Claim 28 (depends on 24)

The apparatus of claim 24, wherein the one or more processors are further configured to cause the apparatus to tune a range of the one or more beacons to cover the inside of the vehicle.