# US 11,115,934 B2 · Radio network node, user equipment and methods therein

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- Number: US 11,115,934 B2
- Document ID: US11115934B2
- Status: Granted
- Kind: B2
- Application number: 16/679,564
- Filed: 2019-11-11
- Published: 2020-03-05
- Granted: 2021-09-07
- Earliest claimed: 2016-08-05
- Assignees: Telefonaktiebolaget LM Ericsson (publ)
- Applicants: Telefonaktiebolaget LM Ericsson (publ)
- Inventors: Erik Eriksson; David Astely
- Web page: https://patentgrep.com/patent/US11115934B2

## CPC

- H04W 52/146: {Uplink power control}
- H04W 52/226: {using past references to control power, e.g. look-up-table}
- H04W 52/242: {taking into account path loss}
- H04W 52/243: {taking into account interferences}
- H04W 52/386: {centralized, e.g. when the radio network controller or equivalent takes part in the power control}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/0473: {the resource being transmission power}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Some embodiments herein relate to method in a user equipment for determining a transmit power to be used by the user equipment when transmitting in a radio communications network, which user equipment is served by a radio network node in the radio communications network. The user equipment receives, from the radio network node, an indication indicating a set of power control parameters out of multiple sets of power control parameters, which multiple sets of power control parameters are stored at the user equipment. The user equipment determines a transmit power based on the indicated set of power control parameters.

## Claims

### Claim 1

A method in a user equipment for determining a transmit power to be used by the user equipment when transmitting over a Physical Uplink Shared Channel (PUSCH) in a radio communications network, wherein the user equipment is served by a radio network node in the radio communications network, the method comprising:
receiving, from the radio network node, an indication indicating a set of power control parameters out of multiple sets of power control parameters and an accumulative power command, wherein the multiple sets of power control parameters are stored at the user equipment; and
adjusting the transmit power for a PUSCH transmission based on the indicated set of power control parameters,
wherein adjusting the transmit power comprises accumulating the accumulative power command with a previously used power command, and wherein different accumulations are done for different sets of power control parameters.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the multiple sets of power control parameters comprise a specific set of power control parameters to apply for one or more subframes, and wherein the indication indicates a subframe comprised in the one or more subframes.

### Claim 3 (depends on 1)

The method according to claim 1, wherein:
the indication is comprised in an uplink grant message;
the indication is a pointer in a list of sets of power control parameters; and
the pointer indicates in the list what set of power control parameter to apply by the user equipment when determining transmit power.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the set of power control parameters comprise at least one of: a maximum transmit power; a target received power, a value indicating percentage of a pathloss that is to be taken into account when determining transmit power, a power offset value, and/or a power command value.

### Claim 5 (depends on 1)

The method according to claim 1, further comprising:
receiving the multiple sets of power control parameters from the radio network node during configuration of the user equipment; and
storing the received multiple sets of power control parameters at the user equipment.

### Claim 6 (depends on 1)

The method of claim 1 wherein receiving, from the radio network node, an indication indicating a set of power control parameters out of multiple sets of power control parameters comprises receiving, from the radio network node, an indication for each of a plurality of transmissions over the PUSCH, and wherein determining the transmit power for a PUSCH transmission based on the indicated set of power control parameters comprises determining the transmit power for each PUSCH transmission.

### Claim 7

A method in a radio network node for controlling a transmit power of a user equipment when transmitting over a Physical Uplink Shared Channel (PUSCH) in a radio communications network, wherein the radio network node serves the user equipment in the radio communications network, the method comprising:
determining a set of power control parameters to be used by the user equipment for determining transmit power of the user equipment; and
transmitting an indication to the user equipment, wherein the indication indicates the set of power control parameters out of multiple sets of power control parameters stored at the user equipment and an accumulative power command, thereby controlling the user equipment to adjust a transmit power for a PUSCH transmission based on the indicated set of power control parameters,
wherein to adjust the transmit power, the user equipment is controlled to accumulate the accumulative power command with a previously used power command, and wherein different accumulations are done for different sets of power control parameters.

### Claim 8 (depends on 7)

The method according to claim 7, further comprising configuring the user equipment with the multiple sets of power control parameters by sending the multiple sets to the user equipment.

### Claim 9 (depends on 7)

The method according to claim 7, wherein the multiple sets of power control parameters comprise a specific set of power control parameters to apply for one or more subframes, and the indication indicates a subframe indicated to the user equipment is comprised in the one or more subframes.

### Claim 10 (depends on 9)

The method according to claim 9, wherein the radio network node serves the user equipment in a cell and the one or more subframes is a subframe or subframes used for a downlink transmission in the cell or a cell neighbouring the cell.

### Claim 11 (depends on 7)

The method according to claim 7, wherein the indication is comprised in an uplink grant message, wherein the indication is a pointer in a list of sets of power control parameters, wherein the pointer indicates in the list what set of power control parameter to apply by the user equipment when determining transmit power.

### Claim 12 (depends on 7)

The method according to claim 7, wherein the set of power control parameters comprise at least one of: a maximum transmit power; a target received power, a value indicating percentage of a pathloss that is to be taken into account when determining transmit power, a power offset value, and/or a power command value.

### Claim 13 (depends on 7)

The method according to claim 7, further comprising retrieving the indication indicating the determined power control parameter from a memory at the radio network node.

### Claim 14 (depends on 7)

The method according to claim 7, wherein the determining comprises to analyze an interference situation in a cell serving the user equipment and/or an interference situation in a cell neighbouring the cell.

### Claim 15 (depends on 7)

The method according to claim 7, wherein the indication is transmitted for granted subframes, wherein the granted subframes experiences adjacent channel interference.

### Claim 16

A user equipment for determining a transmit power to be used by the user equipment when transmitting over a Physical Uplink Shared Channel (PUSCH) in a radio communications network, wherein the user equipment is configured to be served by a radio network node in the radio communications network, wherein the user equipment comprises:
a memory configured to have multiple sets of power control parameters stored thereon;
a receiver configured to receive, from the radio network node, an indication indicating a set of power control parameters out of the stored multiple sets of power control parameters and an accumulative power command;
a determining circuit configured to adjust a transmit power for a PUSCH transmission based on the indicated set of power control parameters,
wherein to adjust the transmit power, the determining circuit is configured to accumulate the accumulative power command with a previously used power command, and wherein different accumulations are done for different sets of power control parameters.

### Claim 17 (depends on 16)

The user equipment according to claim 16, wherein the multiple sets of power control parameters comprise a specific set of power control parameters to apply for one or more subframes, and wherein the indication indicates a subframe comprised in the one or more subframes.

### Claim 18 (depends on 16)

The user equipment according to claim 16, wherein the receiver is configured to receive an uplink grant message comprising the indication, wherein the indication is a pointer in a list of sets of power control parameters, and wherein the pointer indicates in the list what set of power control parameter to apply in the determining circuit.

### Claim 19 (depends on 16)

The user equipment according to claim 16, wherein the set of power control parameters comprise at least one of: a maximum transmit power; a target received power, a value indicating percentage of a pathloss that is to be taken into account when determining transmit power, a power offset value, and/or a power command value.

### Claim 20 (depends on 19)

The user equipment according to claim 19, wherein the receiver is further configured to receive the multiple sets of power control parameters from the radio network node during configuration of the user equipment; and the user equipment is configured to store the multiple sets of power control parameters at the memory.
