# US 2024/0205752 A1 · Terminal and communication method

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- Number: US 2024/0205752 A1
- Document ID: US20240205752A1
- Status: Published application
- Kind: A1
- Application number: 18/554,839
- Filed: 2022-03-30
- Published: 2024-06-20
- Earliest claimed: 2021-04-19
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Shohei Yoshioka; Naoya Shibaike; Satoshi Nagata
- Web page: https://patentgrep.com/patent/US20240205752A1

## CPC

- H04W 28/26: Resource reservation
- H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence)
- H04W 52/02: Power saving arrangements
- H04W 72/02: Selection of wireless resources by user or terminal
- H04W 72/04: Wireless resource allocation
- H04W 72/54: based on quality criteria
- H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04W 92/18: between terminal devices
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

Provided is a terminal that includes: a receiving unit configured to receive a signal from another terminal in a resource pool in which partial sensing is configured and periodic reservation is enabled; a control unit configured to determine candidate resources for resource selection in the resource pool from a resource selection window, determine resources that correspond to the candidate resources and are sensing targets, and select resources that are available for use by identifying the candidate resources based on a sensing result of the resources that are sensing targets; and a transmission unit configured to perform transmission to the other terminal by using the selected resources. In a case where not all of the resources that are sensing targets can be monitored, the control unit performs a resource selection-related operation that is different from a resource selection-related operation that is performed in a case where all of the resources that are sensing targets can be monitored.

## Claims

### Claim 1

A terminal comprising:
a receiving unit configured to receive a signal from another terminal in a resource pool in which partial sensing is configured and periodic reservation is enabled;
a control unit configured to determine candidate resources for resource selection in the resource pool from a resource selection window, determine resources that correspond to the candidate resources and are sensing targets, and select resources that are available for use by identifying the candidate resources based on a sensing result of the resources that are sensing targets; and
a transmission unit configured to perform transmission to the other terminal by using the selected resources,
wherein, in a case where not all of the resources that are sensing targets can be monitored, the control unit performs a resource selection-related operation that is different from a resource selection-related operation that is performed in a case where all of the resources that are sensing targets can be monitored.

### Claim 2 (depends on 1)

The terminal according to claim 1, wherein, in a case where at least a part of the resources that are sensing targets is included in a DRX inactive time, the control unit performs the resource selection-related operation that is different from the resource selection-related operation that is performed in a case where all of the resources that are sensing targets can be monitored.

### Claim 3 (depends on 1)

The terminal according to claim 1, wherein, in a case where not all of the resources that are sensing targets can be monitored, the control unit performs sensing targeting aperiodic reservation, without performing sensing targeting periodic reservation.

### Claim 4 (depends on 1)

The terminal according to claim 1, wherein, in a case where not all of the resources that are sensing targets can be monitored, the control unit performs random selection without identifying resources.

### Claim 5 (depends on 1)

The terminal according to claim 1, wherein, in a case where not all of the resources that are sensing targets can be monitored, the control unit does not perform resource selection until all of the resources that are sensing targets that correspond to the candidate resources that are updated are monitored.

### Claim 6

A communication method comprising:
receiving a signal from another terminal in a resource pool in which partial sensing is configured and periodic reservation is enabled;
determining candidate resources for resource selection in the resource pool from a resource selection window, determining resources that correspond to the candidate resources and are sensing targets, and selecting resources that are available for use by identifying the candidate resources based on a sensing result of the resources that are sensing targets; and
performing transmission to the other terminal by using the selected resources,
wherein, in a case where not all of the resources that are sensing targets can be monitored, performing a resource selection-related operation that is different from a resource selection-related operation that is performed in a case where all of the resources that are sensing targets can be monitored.