US 12,568,449 B2Granted

Method and device for power control for multi-connectivity in wireless communication system

AssigneeSamsung Electronics Co., Ltd.

InventorsJinyoung Oh, Taehyoung Kim, Hyoungju Ji, Jinhyun Park, Youngrok Jang

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Abstract

The present disclosure relates to a 5G or a pre-5G communication system to be provided to support a data transmission rate higher than that of a 4G communication system such as LTE. A method for performing an uplink power control for multi-connectivity in a wireless communication system may comprise the steps of: receiving, from a base station, cell group configuration information related to a master cell group (MCG) and one or more secondary cell groups (SCGs), among multiple cell groups configured for a terminal, wherein the cell group configuration information indicates each of maximum transmission power of the MCG and maximum transmission power of each of the SCGs; and transmitting, to the base station through the MCG and the SCGs, uplink signals having transmission power of the MCG and transmission power of each of the SCGs, determined according to the maximum transmission power of the MCG and the maximum transmission power of each of the SCGs and a multi-connectivity type of the multiple cell groups.

Claims14

Dependent claims

A method of a user equipment (UE) for performing uplink power control for multi-connectivity in a wireless communication system, the method comprising:

receiving, from a base station, cell group configuration information related to a master cell group (MCG) and one or more secondary cell groups (SCGs) among multiple cell groups configured to the UE, wherein the cell group configuration information indicates each of a maximum transmission power of the MCG and a maximum transmission power of each of the SCGs;
transmitting, to the base station via the MCG and the SCGs, uplink signals having a transmission power of the MCG and a transmission power of each SCG, based on the maximum transmission power of the MCG and the maximum transmission power of each of the SCGs, respectively, and a multi-connectivity type of the multiple cell groups;
and
in case that the multi-connectivity type is NR-EUTRA dual connectivity (NE-DC) comprising the MCG using NR and each of the SCGs using EUTRA or at least one of long term evolution or the NR:
in case that at least one first symbol of a first slot of the MCG is an uplink symbol or a flexible symbol based on a time division duplex (TDD) configuration for the MCG and the at least one first symbol of the first slot of the MCG overlaps with a first subframe of a first SCG, determining an uplink transmission power for the first SCG based on a maximum transmission power configured for the first SCG;
in case that at least one first symbol of the first slot of the MCG is a downlink symbol based on the TDD configuration configured for the MCG or the at least one first symbol of the first slot of the MCG does not overlap with the first subframe of the first SCG, determining an uplink transmission power for the first SCG regardless of the maximum transmission power configured for the first SCG;
in an uplink subframe based on a reference TDD configuration configured for the MCG, transmitting, to the base station, HARQ-ACK (hybrid automatic repeat request-acknowledgement) information on a request for activating the first SCG based on the determined uplink transmission power;
and
determining not to perform an uplink transmission on the MCG in a symbol or a slot overlapping with a transmission of the HARQ-ACK information.

6 more elements

A method of a base station for performing uplink power control for multi-connectivity in a wireless communication system, the method comprising:

transmitting, to a user equipment (UE), cell group configuration information related to a master cell group (MCG) and one or more secondary cell groups (SCGs) among multiple cell groups configured to the UE, wherein the cell group configuration information indicates each of a maximum transmission power of the MCG and a maximum transmission power of each of the SCGs;
receiving, from the UE via the MCG and the SCGs, uplink signals with a transmission power of the MCG and a transmission power of each SCG, based on the maximum transmission power of the MCG and the maximum transmission power of each of the SCGs, respectively, and a multi-connectivity type of the multiple cell groups;
in case that the multi-connectivity type is NR-EUTRA dual connectivity (NE-DC) comprising the MCG using NR and each of the SCGs using EUTRA or at least one of long term evolution or the NR:
in case that at least one first symbol of a first slot of the MCG is an uplink symbol or a flexible symbol based on a TDD (time division duplex) configuration for the MCG and the at least one first symbol of the first slot of the MCG overlaps with a first subframe of a first SCG, determining an uplink transmission power in the first SCG based on a maximum transmission power configured for the first SCG;
in case that at least one first symbol of the first slot of the MCG is a downlink symbol based on the TDD configuration configured for the MCG or the at least one first symbol of the first slot of the MCH does not overlap with the first subframe of the first SCG, determining an uplink transmission power in the first SCG regardless of the maximum transmission power configured for the first SCG;
in an uplink subframe based on a reference TDD configuration configured for the MCG, receiving, from the UE, HARQ-ACK (hybrid automatic repeat request-acknowledgement) information on a request for activating the first SCG based on the determined uplink transmission power;
and
determining not to perform an uplink transmission on the MCG in a symbol or a slot overlapping with a transmission of the HARQ-ACK information.

5 more elements

A user equipment (UE) for performing uplink power control for multi-connectivity in a wireless communication system, the UE comprising:

a controller;
and
a transceiver operably coupled to the controller, the transceiver configured to;
receive, from a base station, cell group configuration information related to a master cell group (MCG) and one or more secondary cell groups (SCGs) among multiple cell groups configured to the UE, the cell group configuration information indicating each of a maximum transmission power of the MCG and a maximum transmission power of each of the SCGs,
transmit, to the base station via the MCG and the SCGs, uplink signals having a transmission power of the MCG and a transmission power of each SCG, based on the maximum transmission power of the MCG and the maximum transmission power of each of the SCGs, respectively, and a multi-connectivity type of the multiple cell groups,
in case that the multi-connectivity type is NR-EUTRA dual connectivity (NE-DC) comprising the MCG using NR and each of the SCGs using EUTRA or at least one of long term evolution or the NR:
in case that at least one first symbol of a first slot of the MCG is an uplink symbol or a flexible symbol based on a TDD (time division duplex) configuration for the MCG and the at least one first symbol of the first slot of the MCG overlaps with a first subframe of a first SCG, determine an uplink transmission power in the first SCG based on a maximum transmission power configured for the first SCG,
in case that at least one first symbol of the first slot of the MCG is a downlink symbol based on the TDD configuration configured for the MCG or the at least one first symbol of the first slot of the MCG does not overlap with the first subframe of the first SCG, determine an uplink transmission power in the first SCG regardless the maximum transmission power configured for the first SCG,
in an uplink subframe based on a reference TDD configuration configured for the MCG, transmit, to the base station, HARQ-ACK (hybrid automatic repeat request-acknowledgement) information on a request for activating the first SCG based on the determined uplink transmission power, and
determine not to perform an uplink transmission on the MCG in a symbol or a slot overlapping with a transmission of the HARQ-ACK information.

7 more elements

A base station for performing uplink power control for multi-connectivity in a wireless communication system, the base station comprising:

a controller;
and
a transceiver operably coupled to the controller, the transceiver configured to:
transmit, to a user equipment (UE), cell group configuration information related to a master cell group (MCG) and one or more secondary cell groups (SCGs) among multiple cell groups configured to the UE, the cell group configuration information indicating each of a maximum transmission power of the MCG and a maximum transmission power of each of the SCGs, wherein the cell group configuration information includes a power sharing mode between cell groups, the power sharing mode comprising at least two modes for an uplink transmission of the UE based on the maximum transmission power of the MCG and the maximum transmission power of each of the SCGs,
receive, from the UE via the MCG and the SCGs, uplink signals with a transmission power of the MCG and a transmission power of each SCG, based on the maximum transmission power of the MCG and the maximum transmission power of each of the SCGs, respectively, and a multi-connectivity type of the multiple cell groups, and
in case that the multi-connectivity type is NR-EUTRA dual connectivity (NE-DC) comprising the MCG using NR and each of the SCGs using EUTRA or at least one of long term evolution or the NR;
in case that at least one first symbol of a first slot of the MCG is an uplink symbol or a flexible symbol based on a TDD (time division duplex) configuration for the MCG and the at least one first symbol of the first slot of the MCG overlaps with a first subframe of a first SCG, determine an uplink transmission power in the first SCG based on a maximum transmission power configured for the first SCG,
in case that at least one first symbol of the first slot of the MCG is a downlink symbol based on the TDD configuration configured for the MCG or the at least one first symbol of the first slot of the MCH does not overlap with the first subframe of the first SCG, determine an uplink transmission power in the first SCG regardless of the maximum transmission power configured for the first SCG,
in an uplink subframe based on a reference TDD configuration configured for the MCG, receive, from the UE, HARQ-ACK (hybrid automatic repeat request-acknowledgement) information on a request for activating the first SCG based on the determined uplink transmission power, and
determine not to perform an uplink transmission on the MCG in a symbol or a slot overlapping with a transmission of the HARQ-ACK information.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/258,573Filed 2 Nov 2021
Priority: KR 10-2020-018248823 Dec 2020
Published: US 2024/0049151 A18 Feb 2024
Granted: 3 Mar 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H04W 52/367
With a discrete range or set of values, e.g. step size, ramping or offsets: power values between minimum and maximum limits, e.g. dynamic range
H04L 1/1692
Details of the supervisory signal: physical properties of the supervisory signal, e.g. acknowledgement by energy bursts
H04L 1/1812
Automatic repetition systems, e.g. Van Duuren systems: hybrid protocols; Hybrid automatic repeat request [HARQ]
H04L 1/1854
Arrangements specially adapted for the receiver end: scheduling and prioritising arrangements