# US 2025/0374366 A1 · Communication method, repeater node, non-transitory computer-readable medium, chipset and system

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- Number: US 2025/0374366 A1
- Document ID: US20250374366A1
- Status: Published application
- Kind: A1
- Application number: 19/297,561
- Filed: 2025-08-12
- Published: 2025-12-04
- Earliest claimed: 2023-02-13
- Assignees: KYOCERA Corporation
- Applicants: KYOCERA Corporation
- Inventors: Masato FUJISHIRO; Henry CHANG; Amit KALHAN
- Web page: https://patentgrep.com/patent/US20250374366A1

## CPC

- H04W 76/27: Transitions between radio resource control [RRC] states
- H04B 7/15528: {Control of operation parameters of a relay station to exploit the physical medium}
- H04W 76/14: Direct-mode setup
- H04W 48/20: Selecting an access point
- H04W 84/047: {using dedicated repeater stations}
- H04W 88/04: adapted for relaying to or from another terminal or user
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION

## Abstract

A communication method using a relay apparatus including a relay device configured to perform a relay operation of relaying a radio signal transmitted between a network and a user equipment, and a control terminal configured to receive a control signal used for control of the relay device from the network, the communication method including the steps of: performing, by the control terminal, cell reselection to a second cell different from a first cell, when the control terminal is in a radio resource control (RRC) idle state or an RRC inactive state in the first cell and the relay device is on; and turning off, by the relay apparatus, the relay device based on the cell reselection.

## Claims

### Claim 1

A communication method using a repeater node, the repeater node comprising a repeater device configured to perform a relay operation of a radio signal transmitted between a network and a user equipment, and a control terminal configured to support a function of the user equipment, the communication method comprising:
causing the repeater device to continue the relay operation, when the control terminal transitions from a radio resource control (RRC) connected state to an RRC inactive state in a first cell;
performing, by the control terminal, cell reselection to a second cell different from the first cell, when the control terminal is in the RRC inactive state in the first cell; and
causing, by the repeater device, the relay operation to stop, based on the cell reselection.

### Claim 2 (depends on 1)

The communication method according to claim 1, further comprising:
holding, by the control terminal, a control signal used to control the repeater device, the control signal being received from the first cell, when the control terminal is in an RRC idle state or the RRC inactive state in the first cell.

### Claim 3

A repeater node comprising:
a repeater device configured to perform a relay operation of a radio signal transmitted between a network and a user equipment, the repeater device comprising a Network-controlled Repeater (NCR) controller; and
a control terminal configured to support a function of the user equipment, the control terminal comprising a controller,
wherein the controller of the control terminal is configured to:
cause the repeater device to continue the relay operation when the control terminal transitions from a radio resource control (RRC) connected state to an RRC inactive state in a first cell; and
perform cell reselection to a second cell different from the first cell when the control terminal is in the RRC inactive state in the first cell, and
wherein the NCR controller is configured to:
stop the relay operation based on the cell reselection.

### Claim 4

A non-transitory computer-readable medium storing a program that, when executed by a processor of a repeater node, causes the repeater node to perform a process, the repeater node comprising a repeater device configured to perform a relay operation of a radio signal transmitted between a network and a user equipment, and a control terminal configured to support a function of the user equipment, the process comprising:
causing the repeater device to continue the relay operation when the control terminal transitions from a radio resource control (RRC) connected state to an RRC inactive state in a first cell;
performing cell reselection to a second cell different from the first cell when the control terminal is in the RRC inactive state in the first cell; and
stopping the relay operation based on the cell reselection.

### Claim 5 (depends on 4)

A chipset configured to execute the process stored on the non-transitory computer-readable medium of claim 4.

### Claim 6 (depends on 3)

A system comprising a network, a user equipment, and the repeater node of claim 3.