# US 12,016,014 B2 · Time domain window adaptation for joint channel estimation and DMRS bundling

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- Number: US 12,016,014 B2
- Document ID: US12016014B2
- Status: Granted
- Kind: B2
- Application number: 17/388,206
- Filed: 2021-07-29
- Published: 2023-02-02
- Granted: 2024-06-18
- Earliest claimed: 2021-07-29
- Assignees: Nokia Technologies Oy
- Applicants: Nokia Technologies Oy
- Inventors: Marco Maso; Nhat-Quang Nhan; Alessio Marcone
- Web page: https://patentgrep.com/patent/US12016014B2

## CPC

- H04W 72/1268: of uplink data flows
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/0016: {Time-frequency-code}
- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0058: {Allocation criteria}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

In accordance with example embodiments of the invention there is at least a method and apparatus to perform determining one duration of scheduled transmissions for at least one of physical uplink control channels or physical uplink shared channels; determining at least one actual duration over which power consistency and phase continuity can be maintained; applying one or more time-domain window duration based at least in part on the determined at least one actual duration to make the one or more time-domain window duration cover the one duration of the scheduled transmissions; and based on the determined more than one time-domain window duration, performing at least one of modulation or demodulation of the scheduled transmissions.

## Claims

### Claim 1

An apparatus, comprising:
at least one processor; and
at least one non-transitory memory including computer program code, wherein the at least one non-transitory memory is storing instructions executed by the at least one processor to cause the apparatus to:
determine one duration of scheduled transmissions for at least one of physical uplink control channels or physical uplink shared channels;
determine at least one actual duration over which power consistency and phase continuity can be maintained,
wherein each of the at least one actual duration is limited to a maximum time duration based on a corresponding user equipment capability comprising that frequency hopping can be enabled;
determine one or more time-domain window duration based at least in part on the determined at least one actual duration to make the one or more time-domain window duration cover the one duration of the scheduled transmissions,
wherein the determining comprises the one or more time-domain window duration is used to cover the determined at least one actual duration, and
wherein each of the one or more time-domain window duration is adapted to correspond to the at least one actual duration; and
based on the determined one or more time-domain window duration, perform at least one of modulation or demodulation of the scheduled transmissions; and
based on at least one of a maximum time duration or a maximum unscheduled gap between two consecutive transmissions being exceeded causing power consistency and phase continuity to not be maintained, starting at least one of the one or more time-domain windows from a first orthogonal frequency division multiplexing symbol of the first scheduled transmission.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein gaps between the scheduled transmissions correspond to one or more slots.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the at least one non-transitory memory is storing instructions executed by the at least one processor to cause the apparatus to:
change a frequency hop across the scheduled transmissions based on frequency hopping being enabled.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the at least one of scheduled transmissions is using rules comprising at least one of:
starting a first time-domain window of the one or more time-domain windows from a first orthogonal frequency division multiplexing symbol of a first channel transmission within the determined duration.

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein the one or more time-domain windows end with a last orthogonal frequency division multiplexing symbol of the scheduled transmissions within the determined duration.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the one or more time-domain windows end with a last orthogonal frequency division multiplexing symbol of the scheduled transmissions transmitted before an event which will cause power consistency and phase continuity to not be maintained within the determined duration.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein an event which will cause power consistency and phase continuity to not be maintained includes at least one of expiration of a maximum unscheduled gap between at least two consecutive scheduled transmissions, or expiration of the maximum time duration based on the corresponding user equipment capability.

### Claim 8 (depends on 1)

The apparatus of claim 1, wherein an event which will cause power consistency and phase continuity to not be maintained includes at least one of reception or monitoring of downlink channels by the user equipment, or transmission of other uplink transmission from the user equipment with different settings than the considered scheduled transmissions, or frequency hopping at the user equipment.

### Claim 9 (depends on 1)

The apparatus of claim 1, wherein determining the one or more time-domain window durations is according to pre-defined rules known by the network node and the user equipment.

### Claim 10 (depends on 1)

The apparatus of claim 1, wherein in case of joint channel estimation across different scheduled transmissions of different transport blocks, a duration in which to maintain power consistency and phase continuity is dynamically or semi-statically indicated.

### Claim 11 (depends on 10)

The apparatus of claim 10, wherein the indication is carried in at least one of downlink control information, medium access control—control element or radio resource control message.

### Claim 12 (depends on 1)

The apparatus of claim 1, wherein the apparatus comprises at least in part of a network node or a user equipment.

### Claim 13

A method, comprising:
determining one duration of scheduled transmissions for at least one of physical uplink control channels or physical uplink shared channels;
determining at least one actual duration over which power consistency and phase continuity can be maintained,
wherein each of the at least one actual duration is limited to a maximum time duration based on a corresponding user equipment capability comprising that frequency hopping is enabled;
determining one or more time-domain window durations based at least in part on the determined at least one actual duration to make the one or more time-domain window durations cover the one duration of the scheduled transmissions,
wherein the determining comprises the one or more time-domain window durations is used to cover the determined at least one actual duration, and
wherein each of the one or more time-domain window durations is adapted to correspond to the at least one actual duration; and
based on the determined one or more time-domain window durations, performing at least one of modulation or demodulation of the scheduled transmissions; and
based on at least one of a maximum time duration or a maximum unscheduled gap between two consecutive transmissions being exceeded causing power consistency and phase continuity to not be maintained, starting at least one of the one or more time-domain windows from a first orthogonal frequency division multiplexing symbol of the first scheduled transmission.

### Claim 14 (depends on 13)

The method of claim 13, wherein gaps between the scheduled transmissions correspond to one or more slots.

### Claim 15 (depends on 13)

The method of claim 13, wherein the at least one of scheduled transmissions is using rules comprising at least one of:
starting a first time-domain window of the one or more time-domain windows from a first orthogonal frequency division multiplexing symbol of a first channel transmission within the determined duration.

### Claim 16 (depends on 13)

The method of claim 13, wherein the one or more time-domain windows end with a last orthogonal frequency division multiplexing symbol of the scheduled transmissions within the determined duration.

### Claim 17 (depends on 13)

The method of claim 13, wherein the one or more time-domain windows end with a last orthogonal frequency division multiplexing symbol of the scheduled transmissions transmitted before an event which will cause power consistency and phase continuity to not be maintained within the determined duration.

### Claim 18 (depends on 13)

The method of claim 13, wherein an event which will cause power consistency and phase continuity to not be maintained includes at least one of expiration of a maximum unscheduled gap between at least two consecutive scheduled transmissions, or expiration of the maximum time duration based on the corresponding user equipment capability.

### Claim 19 (depends on 13)

The method of claim 13, wherein an event which will cause power consistency and phase continuity to not be maintained includes at least one of reception or monitoring of downlink channels by the user equipment, or transmission of other uplink transmission from the user equipment with different settings than the considered scheduled transmissions, or frequency hopping at the user equipment.

### Claim 20

A computer program product comprising a non-transitory computer-readable medium bearing computer program code embodied therein for use with a computer, the computer program code comprising:
code for determining one duration of scheduled transmissions for at least one of physical uplink control channels or physical uplink shared channels;
code for determining at least one actual duration over which power consistency and phase continuity can be maintained,
wherein each of the at least one actual duration is limited to a maximum time duration based on a corresponding user equipment capability comprising that frequency hopping is enabled;
code for determining one or more time-domain window durations based at least in part on the determined at least one actual duration to make the one or more time-domain window durations cover the one duration of the scheduled transmissions,
wherein the determining comprises the one or more time-domain window durations is used to cover the determined at least one actual duration, and
wherein each of the one or more time-domain window durations is adapted to correspond to the at least one actual duration;
code for performing at least one of modulation or demodulation of the scheduled transmissions, based on the determined one or more time-domain window durations; and
based on at least one of a maximum time duration or a maximum unscheduled gap between two consecutive transmissions being exceeded causing power consistency and phase continuity to not be maintained, starting at least one of the one or more time-domain windows from a first orthogonal frequency division multiplexing symbol of the first scheduled transmission.
