# US 2022/0279451 A1 · Terminal and communication method

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- Number: US 2022/0279451 A1
- Document ID: US20220279451A1
- Status: Published application
- Kind: A1
- Application number: 17/628,058
- Filed: 2019-07-22
- Published: 2022-09-01
- Earliest claimed: 2019-07-22
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Shohei Yoshioka; Yuki Matsumura; Satoshi Nagata; Yanru Wang
- Web page: https://patentgrep.com/patent/US20220279451A1

## CPC

- H04W 52/14: Separate analysis of uplink or downlink
- H04W 52/383: {power control in peer-to-peer links}
- H04B 17/347: {Path loss}
- H04W 52/10: Open loop power control
- H04W 52/242: {taking into account path loss}
- H04W 52/245: {taking into account received signal strength}
- H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range}
- H04W 92/18: between terminal devices
- 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 terminal includes a control unit that selects a sidelink reference signal, the sidelink reference signal being specified or preconfigured as the sidelink reference signal that can be used to measure a sidelink pathloss, and that selects a port or an index, the port or the index being specified or preconfigured for receiving the selected reference signal; and a receiving unit that receives the reference signal selected by the control unit.

## Claims

### Claim 1

A terminal comprising:
a control unit that selects a sidelink reference signal, the sidelink reference signal being specified or preconfigured as the sidelink reference signal that can be used to measure a sidelink pathloss, and that selects a port or an index, the port or the index being specified or preconfigured for receiving the selected reference signal; and
a receiving unit that receives the reference signal selected by the control unit.

### Claim 2 (depends on 1)

The terminal according to claim 1, wherein the sidelink reference signal that can be used to measure the sidelink pathloss is at least one of
a sidelink demodulation reference signal;
a sidelink channel state information reference signal; or
a sidelink Synchronization Signal and Physical Broadcast Channel (SS/PBCH) block.

### Claim 3 (depends on 2)

The terminal according to claim 2, wherein the control unit
selects the sidelink demodulation reference signal or the sidelink channel state information reference signal, as the sidelink reference signal that can be used to measure the sidelink pathloss, and
selects all the ports or all the indexes of the selected sidelink reference signal to measure the sidelink pathloss.

### Claim 4 (depends on 1)

The terminal according to claim 1, wherein the receiving unit further measures received power by receiving the reference signal selected by the control unit while applying the port or the index that is specified or preconfigured, and
wherein the control unit further performs open-loop transmission power control using the received power or the control unit determines to transmit the received power to another terminal.

### Claim 5 (depends on 1)

The terminal according to claim 1, wherein the receiving unit receives the reference signal selected by the control unit while applying the port or the index that is specified or preconfigured, and the receiving unit measures received power by performing normalization of power according to a number of the ports or the indexes that are specified or preconfigured.

### Claim 6

A communication method executed by a terminal, the communication method comprising:
selecting a sidelink reference signal, the sidelink reference signal being specified or preconfigured as the sidelink reference signal that can be used to measure a sidelink pathloss, and selecting a port or an index, the port or the index being specified or preconfigured for receiving the selected reference signal; and
receiving the selected reference signal.