# US 2023/0057591 A1 · Autonomous timing adjustment for a wireless device

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- Number: US 2023/0057591 A1
- Document ID: US20230057591A1
- Status: Published application
- Kind: A1
- Application number: 17/972,962
- Filed: 2022-10-25
- Published: 2023-02-23
- Earliest claimed: 2016-09-30
- Assignees: Telefonaktiebolaget LM Ericsson (publ)
- Applicants: Telefonaktiebolaget LM Ericsson (publ)
- Inventors: Mattias BERGSTRÖM; Muhammad KAZMI; Iana SIOMINA
- Web page: https://patentgrep.com/patent/US20230057591A1

## CPC

- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 56/0045: {compensating for timing error by altering transmission time}
- H04W 72/20: Control channels or signalling for resource management
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A wireless device and network node are provided. According to one aspect, the wireless device includes processing circuitry configured to determine at least a first timing adjustment parameter based on at least a first numerology parameter and adjust the timing of an uplink transmission based on the first timing adjustment parameter. According to another aspect, a method includes a timing adjustment parameter determiner module configured to determine at least a first timing adjustment parameter based on at least a first numerology parameter. The method also includes a timing adjustment module configured to adjust the timing of an uplink transmission based on the first timing adjustment parameter. These arrangements allow for the preservation of network node reception performance.

## Claims

### Claim 1

A method in a wireless device of adjusting timing of transmissions, the method comprising:
determining at least a first timing adjustment parameter relative to a timing of a downlink signal using at least a first numerology parameter; and
transmitting the uplink transmission based at least on the determined first timing adjustment parameter.

### Claim 2 (depends on 1)

The method of claim 1, wherein the at least the first timing adjustment parameter includes a maximum adjustment amount of one adjustment step based on a subcarrier spacing.

### Claim 3 (depends on 1)

The method of claim 1, wherein the at least the first timing adjustment parameter includes a frequency of a timing adjustment based on a carrier frequency of the uplink transmission.

### Claim 4 (depends on 1)

The method of claim 1, wherein at least the first timing adjustment parameter includes an aggregate adjustment rate at which the wireless device updates an uplink transmission timing.

### Claim 5 (depends on 1)

The method of claim 1, further comprising:
determining a second timing adjustment parameter based on a second numerology parameter;
determining a numerology to be used by the wireless device for uplink transmissions;
selecting one of the first timing adjustment parameter and the second timing adjustment parameter based on the determined numerology; and
applying the selected one of the first and second timing adjustment parameters to adjust the timing of an uplink transmission.

### Claim 6 (depends on 5)

The method of claim 5, wherein the second timing adjustment parameter is based on a determined downlink numerology.

### Claim 7 (depends on 1)

The method of claim 1, wherein the at least the first timing adjustment parameter is determined autonomously by the wireless device.

### Claim 8 (depends on 1)

The method of claim 1, wherein the at least the first timing adjustment parameter is determined based on one of a rule and a predefined value received from a network node.

### Claim 9 (depends on 1)

The method of claim 1, wherein the at least the first timing adjustment parameter is further determined based on one of an uplink bandwidth and a downlink bandwidth.

### Claim 10 (depends on 5)

The method of claim 5, wherein at least one of the first and second numerology parameter comprises one or more of: frame duration, subframe duration, transmission time interval (TTI) duration, slot duration, symbol duration and number of symbols per slot and subframe, subcarrier spacing, sampling frequency, fast Fourier transform (FFT) size, number of subcarriers per resource Block (RB), number of RBs within the bandwidth, and cyclic prefix length.

### Claim 11

A wireless device configured for adjusting timing of transmissions, the wireless device comprising:
processing circuitry configured to:
determine at least a first timing adjustment parameter relative to a timing of a downlink signal using at least a first numerology parameter; and
transmit the uplink transmission based at least on the determined first timing adjustment parameter.

### Claim 12 (depends on 11)

The wireless device of claim 11, wherein the at least the first timing adjustment parameter includes a maximum adjustment amount of one adjustment step.

### Claim 13 (depends on 11)

The wireless device of claim 11, wherein the at least the first timing adjustment parameter includes a frequency of a timing adjustment.

### Claim 14 (depends on 11)

The wireless device of claim 11, wherein the at least the first timing adjustment parameter includes an aggregate adjustment rate at which the wireless device updates an uplink transmission timing.

### Claim 15 (depends on 11)

The wireless device of claim 11, wherein the processing circuitry is further configured to:
determine a second timing adjustment parameter based on a second numerology parameter;
determine a numerology to be used by the wireless device for uplink transmissions;
select one of the first timing adjustment parameter and the second timing adjustment parameter based on the determined numerology; and
apply the selected one of the first and second timing adjustment parameters to adjust the timing of an uplink transmission.

### Claim 16 (depends on 15)

The wireless device of claim 15, wherein the second timing adjustment parameter is based on a determined downlink numerology.

### Claim 17 (depends on 11)

The wireless device of claim 11, wherein the at least the first timing adjustment parameter is determined autonomously by the wireless device.

### Claim 18 (depends on 11)

The wireless device of claim 11, wherein the at least the first timing adjustment parameter is determined based on one of a rule and a predefined value received from a network node.

### Claim 19 (depends on 15)

The wireless device of claim 15, wherein at least one of the first and second numerology parameter comprises one or more of: frame duration, subframe duration, transmission time interval (TTI) duration, slot duration, symbol duration and number of symbols per slot and subframe, subcarrier spacing, sampling frequency, fast Fourier transform (FFT) size, number of subcarriers per resource Block (RB), number of RBs within the bandwidth, and cyclic prefix length.

### Claim 20

A method in a network node for adjusting timing of received signals, the method comprising:
determining at least a first timing adjustment parameter based on at least a first numerology parameter, the first timing adjustment parameter related to an amount of transmit timing adjustment to be applied by a wireless device for transmitting an uplink signal; and
adapting at least one parameter of a receiver of the network node based on the determined at least one first timing adjustment parameter.
