# US 11,452,041 B2 · UE and base station PAPR report

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- Number: US 11,452,041 B2
- Document ID: US11452041B2
- Status: Granted
- Kind: B2
- Application number: 17/105,371
- Filed: 2020-11-25
- Published: 2022-05-26
- Granted: 2022-09-20
- Earliest claimed: 2020-11-25
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Idan Michael Horn; Shay Landis
- Web page: https://patentgrep.com/patent/US11452041B2

## CPC

- H04W 52/0229: {where the received signal is a wanted signal}
- H04B 17/12: of transmit antennas, e.g. of the amplitude or phase
- H04B 17/336: Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
- H04W 52/143: {Downlink power control}
- H04W 52/225: {Calculation of statistics, e.g. average or variance}
- H04W 52/283: {Power depending on the position of the mobile}
- H04W 52/365: {Power headroom reporting}
- H04W 72/51: based on terminal or device properties
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A configuration for optimized UE power efficiency based on a PAPR report. The apparatus establishes a connection with a base station. The apparatus transmits, to the base station, a PAPR report indicating one or more parameters to adjust the PAPR of each ADC of the UE. The apparatus receives, from the base station, a downlink signal based on the PAPR report of the UE.

## Claims

### Claim 1

A method of wireless communication at a user equipment (UE), comprising:
establishing a connection with a base station;
transmitting, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
receiving, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE and PAPR reduction information from the base station.

### Claim 2

A method of wireless communication at a user equipment (UE), comprising:
establishing a connection with a base station;
transmitting, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
receiving, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE, wherein the one or more parameters to adjust the PAPR of the UE include at least one of:
a number of antennas at the UE,
a distance between adjacent antennas,
an angle of arrival for a signal from the base station,
an antenna beam width of the UE,
a requested PAPR variance on an antenna array of the UE,
a requested averaged PAPR for a subsequent transmission from the base station, or
a requested maximum or a minimum PAPR for each antenna element of the UE.

### Claim 3 (depends on 1)

The method of claim 1, wherein the PAPR report is transmitted in a semi-static manner as part of a capabilities exchange or a dedicated radio resource control (RRC) message along with the one or more parameters to adjust the PAPR of the UE.

### Claim 4 (depends on 1)

The method of claim 1, wherein the PAPR reduction information from the base station comprises an indication indicating PAPR reduction methods used by the base station, wherein the PAPR reduction methods comprise at least one of clipping, filtering, or tone reservation.

### Claim 5 (depends on 1)

The method of claim 1, wherein the PAPR reduction information comprises an estimated averaged PAPR and a corresponding variance on an antenna array.

### Claim 6 (depends on 1)

The method of claim 1, wherein the PAPR reduction information comprises a maximum or minimum estimated PAPR and an indication identifying a corresponding antenna of an antenna array.

### Claim 7

A method of wireless communication at a user equipment (UE), comprising:
establishing a connection with a base station;
transmitting, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE;
receiving, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE;
determining a change in the PAPR of the UE; and
transmitting, to the base station, a requested PAPR for a subsequent transmission from the base station, wherein the UE transmits the requested PAPR in response to the change in the PAPR of the UE.

### Claim 8 (depends on 7)

The method of claim 7, wherein the determining the change in the PAPR comprises determining a change in a channel fading causing clipping or quantization in part of subcarriers.

### Claim 9 (depends on 7)

The method of claim 7, wherein the requested PAPR is transmitted via medium access control-control element (MAC-CE) or radio resource control (RRC).

### Claim 10 (depends on 7)

The method of claim 7, further comprising:
receiving, from the base station, an updated PAPR report comprising updated parameters for the requested PAPR.

### Claim 11 (depends on 10)

The method of claim 10, wherein the updated parameters comprise at least one of:
an updated estimated averaged PAPR and an updated corresponding variance on an antenna array, or
an updated maximum or minimum estimated PAPR and an indication identifying a corresponding antenna of the antenna array.

### Claim 12 (depends on 10)

The method of claim 10, wherein the updated PAPR report is transmitted via downlink control information (DCI), medium access control-control element (MAC-CE), or radio resource control (RRC).

### Claim 13 (depends on 1)

The method of claim 1, further comprising:
reducing ADC processing at the UE based on the adjusted PAPR of the downlink signal.

### Claim 14

An apparatus for wireless communication at a user equipment (UE), comprising:
a memory; and
at least one processor coupled to the memory and configured to:
establish a connection with a base station;
transmit, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
receive, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE and PAPR reduction information from the base station.

### Claim 15 (depends on 14)

The apparatus of claim 14, wherein the PAPR report is transmitted in a semi-static manner as part of a capabilities exchange or a dedicated radio resource control (RRC) message along with the one or more parameters to adjust the PAPR of the UE.

### Claim 16 (depends on 14)

The apparatus of claim 14, wherein the PAPR reduction information from the base station comprises an indication indicating PAPR reduction methods used by the base station, wherein the PAPR reduction methods comprise at least one of clipping, filtering, or tone reservation.

### Claim 17 (depends on 14)

The apparatus of claim 14, wherein the PAPR reduction information comprises an estimated averaged PAPR and a corresponding variance on an antenna array.

### Claim 18 (depends on 14)

The apparatus of claim 14, wherein the PAPR reduction information comprises a maximum or minimum estimated PAPR and an indication identifying a corresponding antenna of an antenna array.

### Claim 19

An apparatus for wireless communication at a user equipment (UE), comprising:
a memory; and
at least one processor coupled to the memory and configured to:
establish a connection with a base station;
transmit, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE:
receive, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE;
determine a change in the PAPR of the UE; and
transmit, to the base station, a requested PAPR for a subsequent transmission from the base station, wherein the UE transmits the requested PAPR in response to the change in the PAPR of the UE.

### Claim 20 (depends on 19)

The apparatus of claim 19, wherein to determine the change in the PAPR, the at least one processor is configured to determine a change in a channel fading causing clipping or quantization in part of subcarriers.

### Claim 21 (depends on 19)

The apparatus of claim 19, wherein the requested PAPR is transmitted via medium access control-control element (MAC-CE) or radio resource control (RRC).

### Claim 22 (depends on 19)

The apparatus of claim 19, wherein to determine the change in the PAPR, the at least one processor is configured to:
receive, from the base station, an updated PAPR report comprising updated parameters for the requested PAPR.

### Claim 23 (depends on 22)

The apparatus of claim 22, wherein the updated parameters comprise at least one of:
an updated estimated averaged PAPR and an updated corresponding variance on an antenna array, or
an updated maximum or minimum estimated PAPR and an indication identifying a corresponding antenna of the antenna array.

### Claim 24 (depends on 22)

The apparatus of claim 22, wherein the updated PAPR report is transmitted via downlink control information (DCI), medium access control-control element (MAC-CE), or radio resource control (RRC).

### Claim 25

A method of wireless communication at a base station comprising:
receiving, from a user equipment (UE), a request to establish a connection;
receiving, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
transmitting, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE and PAPR reduction information from the base station.

### Claim 26 (depends on 25)

The method of claim 25, wherein the PAPR report is received in a semi-static manner as part of a capabilities exchange or a dedicated radio resource control (RRC) message along with the one or more parameters to adjust the PAPR of the UE.

### Claim 27 (depends on 25)

The method of claim 25, wherein the PAPR reduction information from the base station comprises an indication indicating PAPR reduction methods used by the base station, wherein the PAPR reduction methods comprise at least one of clipping, filtering, or tone reservation.

### Claim 28 (depends on 25)

The method of claim 25, wherein the PAPR reduction information comprises an estimated averaged PAPR and a corresponding variance on an antenna array.

### Claim 29 (depends on 25)

The method of claim 25, wherein the PAPR reduction information comprises a maximum or minimum estimated PAPR and an indication identifying a corresponding antenna of an antenna array.

### Claim 30

A method of wireless communication at a base station comprising:
receiving, from a user equipment (UE), a request to establish a connection;
receiving, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
transmitting, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE, wherein the one or more parameters to adjust the PAPR of the UE include at least one of:
a number of antennas at the UE,
a distance between adjacent antennas,
an angle of arrival for a signal from the base station,
an antenna beam width of the UE,
a requested PAPR variance on an antenna array of the UE,
a requested averaged PAPR for a subsequent transmission from the base station, or
a requested maximum or a minimum PAPR for each antenna element of the UE.

### Claim 31

A method of wireless communication at a base station comprising:
receiving, from a user equipment (UE), a request to establish a connection;
receiving, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE;
transmitting, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE; and
receiving, from the UE, a requested PAPR for a subsequent transmission from the base station, wherein the base station receives the requested PAPR in response to a change in the PAPR of the UE.

### Claim 32 (depends on 31)

The method of claim 31, wherein the requested PAPR is transmitted via medium access control-control element (MAC-CE) or radio resource control (RRC).

### Claim 33 (depends on 31)

The method of claim 31, further comprising:
transmitting, to the UE, an updated PAPR report comprising updated parameters for the requested PAPR.

### Claim 34 (depends on 33)

The method of claim 33, wherein the updated parameters comprise at least one of an updated estimated averaged PAPR and an updated corresponding variance on an antenna array, or an updated maximum or minimum estimated PAPR and an indication identifying a corresponding antenna of the antenna array.

### Claim 35 (depends on 33)

The method of claim 33, wherein the updated PAPR report is transmitted via downlink control information (DCI), medium access control-control element (MAC-CE), or radio resource control (RRC).

### Claim 36

An apparatus for wireless communication at a base station, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
receive, from a user equipment (UE), a request to establish a connection;
receive, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
transmit, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE and PAPR reduction information from the base station.

### Claim 37 (depends on 36)

The apparatus of claim 36, wherein the PAPR report is received in a semi-static manner as part of a capabilities exchange or a dedicated radio resource control (RRC) message along with the one or more parameters to adjust the PAPR of the UE.

### Claim 38 (depends on 36)

The apparatus of claim 36, wherein the PAPR reduction information from the base station comprises an indication indicating PAPR reduction methods used by the base station, wherein the PAPR reduction methods comprise at least one of clipping, filtering, or tone reservation.

### Claim 39 (depends on 36)

The apparatus of claim 36, wherein the PAPR reduction information comprises an estimated averaged PAPR and a corresponding variance on an antenna array.

### Claim 40 (depends on 36)

The apparatus of claim 36, wherein the PAPR reduction information comprises a maximum or minimum estimated PAPR and an indication identifying a corresponding antenna of an antenna array.

### Claim 41

An apparatus for wireless communication at a base station, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
receive, from a user equipment (UE), a request to establish a connection;
receive, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE;
transmit, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE; and
receive, from the UE, a requested PAPR for a subsequent transmission from the base station, wherein the base station receives the requested PAPR in response to a change in the PAPR of the UE.

### Claim 42 (depends on 41)

The apparatus of claim 41, wherein the requested PAPR is transmitted via medium access control-control element (MAC-CE) or radio resource control (RRC).

### Claim 43 (depends on 41)

The apparatus of claim 41, wherein the at least one processor is further configured to:
transmit, to the UE, an updated PAPR report comprising updated parameters for the requested PAPR.

### Claim 44 (depends on 43)

The apparatus of claim 43, wherein the updated parameters comprises at least one of an updated estimated averaged PAPR and an updated corresponding variance on an antenna array, or an updated maximum or minimum estimated PAPR and an indication identifying a corresponding antenna of the antenna array.

### Claim 45 (depends on 43)

The apparatus of claim 43, wherein the updated PAPR report is transmitted via downlink control information (DCI), medium access control-control element (MAC-CE), or radio resource control (RRC).

### Claim 46

An apparatus for wireless communication at a user equipment (UE), comprising:
means for establishing a connection with a base station;
means for transmitting, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
means for receiving, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE and PAPR reduction information from the base station.

### Claim 47

An apparatus for wireless communication at a user equipment (UE), comprising:
means for establishing a connection with a base station;
means for transmitting, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
means for receiving, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE, wherein the one or more parameters to adjust the PAPR of the UE include at least one of:
a number of antennas at the UE,
a distance between adjacent antennas,
an angle of arrival for a signal from the base station,
an antenna beam width of the UE,
a requested PAPR variance on an antenna array of the UE,
a requested averaged PAPR for a subsequent transmission from the base station, or
a requested maximum or a minimum PAPR for each antenna element of the UE.

### Claim 48

An apparatus for wireless communication at a user equipment (UE), comprising:
means for establishing a connection with a base station;
means for transmitting, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE;
means for receiving, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE;
means for determining a change in the PAPR of the UE; and
means for transmitting, to the base station, a requested PAPR for a subsequent transmission from the base station, wherein the UE transmits the requested PAPR in response to the change in the PAPR of the UE.

### Claim 49

A non-transitory computer-readable medium storing computer executable code at a user equipment (UE), the code when executed by a processor causes the processor to:
establish a connection with a base station;
transmit, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
receive, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE and PAPR reduction information from the base station.

### Claim 50

A non-transitory computer-readable medium storing computer executable code at a user equipment (UE), the code when executed by a processor causes the processor to:
establish a connection with a base station;
transmit, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
receive, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE, wherein the one or more parameters to adjust the PAPR of the UE include at least one of:
a number of antennas at the UE,
a distance between adjacent antennas,
an angle of arrival for a signal from the base station,
an antenna beam width of the UE,
a requested PAPR variance on an antenna array of the UE,
a requested averaged PAPR for a subsequent transmission from the base station, or
a requested maximum or a minimum PAPR for each antenna element of the UE.

### Claim 51

A non-transitory computer-readable medium storing computer executable code at a user equipment (UE), the code when executed by a processor causes the processor to:
establish a connection with a base station;
transmit, to the base station, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE;
receive, from the base station, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE;
determine a change in the PAPR of the UE; and
transmit, to the base station, a requested PAPR for a subsequent transmission from the base station, wherein the UE transmits the requested PAPR in response to the change in the PAPR of the UE.

### Claim 52

An apparatus for wireless communication at a base station, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
receive, from a user equipment (UE), a request to establish a connection;
receive, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
transmit, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE, wherein the one or more parameters to adjust the PAPR of the UE include at least one of:
a number of antennas at the UE,
a distance between adjacent antennas,
an angle of arrival for a signal from the base station,
an antenna beam width of the UE,
a requested PAPR variance on an antenna array of the UE,
a requested averaged PAPR for a subsequent transmission from the base station, or
a requested maximum or a minimum PAPR for each antenna element of the UE.

### Claim 53

An apparatus for wireless communication at a base station, comprising:
means for receiving, from a user equipment (UE), a request to establish a connection;
means for receiving, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
means for transmitting, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE and PAPR reduction information from the base station.

### Claim 54

An apparatus for wireless communication at a base station, comprising:
means for receiving, from a user equipment (UE), a request to establish a connection;
means for receiving, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
means for transmitting, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE, wherein the one or more parameters to adjust the PAPR of the UE include at least one of:
a number of antennas at the UE,
a distance between adjacent antennas,
an angle of arrival for a signal from the base station,
an antenna beam width of the UE,
a requested PAPR variance on an antenna array of the UE,
a requested averaged PAPR for a subsequent transmission from the base station, or
a requested maximum or a minimum PAPR for each antenna element of the UE.

### Claim 55

An apparatus for wireless communication at a base station, comprising:
means for receiving, from a user equipment (UE), a request to establish a connection;
means for receiving, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE;
means for transmitting, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE; and
means for receiving, from the UE, a requested PAPR for a subsequent transmission from the base station, wherein the base station receives the requested PAPR in response to a change in the PAPR of the UE.

### Claim 56

A non-transitory computer-readable medium storing computer executable code at a base station, the code when executed by a processor causes the processor to:
receive, from a user equipment (UE), a request to establish a connection;
receive, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
transmit, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE and PAPR reduction information from the base station.

### Claim 57

A non-transitory computer-readable medium storing computer executable code at a base station, the code when executed by a processor causes the processor to:
receive, from a user equipment (UE), a request to establish a connection;
receive, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE; and
transmit, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE, wherein the one or more parameters to adjust the PAPR of the UE include at least one of:
a number of antennas at the UE,
a distance between adjacent antennas,
an angle of arrival for a signal from the base station,
an antenna beam width of the UE,
a requested PAPR variance on an antenna array of the UE,
a requested averaged PAPR for a subsequent transmission from the base station, or
a requested maximum or a minimum PAPR for each antenna element of the UE.

### Claim 58

A non-transitory computer-readable medium storing computer executable code at a base station, the code when executed by a processor causes the processor to:
receive, from a user equipment (UE), a request to establish a connection;
receive, from the UE, a peak to average power ratio (PAPR) report indicating one or more parameters to adjust a PAPR of each analog to digital converter (ADC) of the UE;
transmit, to the UE, a downlink signal having an adjusted PAPR based on the one or more parameters provided by the UE; and
receive, from the UE, a requested PAPR for a subsequent transmission from the base station, wherein the base station receives the requested PAPR in response to a change in the PAPR of the UE.