# US 12,764,573 B2 · Terminal, base station, and radio communication method

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- Number: US 12,764,573 B2
- Document ID: US12764573B2
- Status: Granted
- Kind: B2
- Application number: 18/273,880
- Filed: 2021-01-26
- Published: 2024-12-26
- Granted: 2026-10-13
- Earliest claimed: 2021-01-26
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Hiroki Harada; Daisuke Kurita; Mayuko Okano; Satoshi Nagata; Masaya Okamura; Tomoya Ohara
- Web page: https://patentgrep.com/patent/US12764573B2

## CPC

- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A terminal comprises: a transmission unit that transmits a reference signal used for a purpose other than a measurement related to position of terminal; and a control unit that assumes the measurement related to the position of terminal is performed using the reference signal.

## Claims

### Claim 1

A terminal comprising:
a transmitter that transmits a first reference signal used for a measurement related to a position of terminal and a second reference signal having a purpose different from the measurement related to the position of the terminal; and
a processor that determines, based on at least one of a notification received from the base station or a specific period condition, that a base station performs the measurement related to the position of terminal using the second reference signal in addition to the first reference signal,
wherein in response to the determination, the processor controls the transmitter to omit a part of transmission of the first reference signal, that is periodically transmitted to the base station, when the processor assumes the base station performing the measurement related to the position of terminal using the second reference signal, and
wherein the transmitter omits the part of transmission of the first reference signal when the base station performs the measurement related to the position of terminal using the second reference signal within a transmission period of the first reference signal.

### Claim 2

A base station comprising:
a receiver that receives a first reference signal used for a measurement related to a position of a terminal and a second reference signal having a purpose different from the measurement related to the position of the terminal; and
a processor that performs the measurement related to the position of the terminal using the second reference signal in addition to the first reference signal,
wherein the processor performs the measurement related to the position of the terminal using the second reference signal without assuming reception of the first reference signal, that is periodically transmitted from the terminal, when the receiver receives the second reference signal, and
wherein the processor performs the measurement related to the position of the terminal using the second reference signal within a transmission period of the first reference signal when the terminal omits a part of transmission of the first reference signal.

### Claim 3

A radio communication method for a terminal comprising:
transmitting, with a transmitter, a first reference signal used for a measurement related to a position of terminal and a second reference signal having a purpose different from the measurement related to the position of the terminal; and
determining, with a processor, based on at least one of a notification received from the base station or a specific period condition, that a base station performs the measurement related to the position of terminal using the second reference signal in addition to the first reference signal,
wherein in response to the determining, the processor controls the transmitter to omit a part of transmission of the first reference signal, that is periodically transmitted to the base station, when the processor assumes the base station performing the measurement related to the position of terminal using the second reference signal, and
wherein the transmitter omits the part of transmission of the first reference signal when the base station performs the measurement related to the position of terminal using the second reference signal within a transmission period of the first reference signal.