Terminal devices and base stations devices

Patent metadata

Field	Value
Publication number	US-12452925-B2
Application number	US-202118266798-A
Country	US
Kind code	B2
Filing date	Dec 17, 2021
Priority date	Dec 22, 2020
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

Terminal device attempts to initiate a COT-u after the channel is sensed to be idle and transmit a configured grant PUSCH. A start of a time domain resource of the configured grant PUSCH is aligned with the start of the FFP-u. In a case that the FFP-u does not overlap with an IP-g of an FFP-g, the COT-u is initiated and the configured grant PUSCH is transmitted.

First claim

The invention claimed is:

1. A terminal device comprising:
reception circuitry configured to sense a channel, receive Fixed Frame Period-u (FFP-u) configuration and Fixed Frame Period-g (FFP-g) configuration including Idle Period-g (IP-g) configuration; and
transmission circuitry configured to attempt to initiate a Channel Occupancy Time (COT-u) at a start of an FFP-u after the channel is sensed to be idle and transmit a configured grant Physical Uplink Shared Channel (PUSCH); wherein
a start of a time domain resource of the configured grant PUSCH is aligned with the start of the FFP-u; wherein
in a case that the FFP-u does not overlap with an IP-g of an FFP-g, the COT-u is initiated and the configured grant PUSCH is transmitted;
in a case that the FFP-u overlaps with the IP-g and the time domain resource of the configured grant PUSCH finishes before a start of the IP-g, the COT-u is initiated and the configured grant PUSCH is transmitted;
in a case that the FFP-u overlaps with the IP-g and the time domain resource of the configured grant PUSCH finishes at or after the start of the IP-g, the COT-u is not initiated and the configured grant PUSCH is not transmitted.

2. The terminal device according to claim 1 , wherein
in a case that the FFP-u overlaps with the IP-g and the time domain resource of the configured grant PUSCH finishes before the start of the IP-g, the COT-u is terminated before the start of the IP-g.

3. A base station device comprising:
transmission circuitry configured to transmit Fixed Frame Period-u (FFP-u) configuration and Fixed Frame Period-g (FFP-g) configuration including Idle Period-g (IP-g) configuration; and
reception circuitry configured to receive a Channel Occupancy Time (COT-u) at a start of an FFP-u and a configured grant Physical Uplink Shared Channel (PUSCH); wherein
a start of a time domain resource of the configured grant PUSCH is aligned with the start of the FFP-u; wherein
in a case that the FFP-u does not overlap with an IP-g of an FFP-g, initiation of the COT-u and transmission the configured grant PUSCH are expected;
in a case that the FFP-u overlaps with the IP-g and the time domain resource of the configured grant PUSCH finishes before a start of the IP-g, the initiation of the COT-u and the transmission the configured grant PUSCH are expected;
in a case that the FFP-u overlaps with the IP-g and the time domain resource of the configured grant PUSCH finishes at or after the start of the IP-g, the initiation of the COT-u and transmission the configured grant PUSCH are not expected.

4. The base station device according to claim 3 , wherein
in a case that the FFP-u overlaps with the IP-g and the time domain resource of the configured grant PUSCH finishes before the start of the IP-g, termination of the COT-u before the start of the IP-g is expected.

Assignees

• Sharp Kk

Inventors

• Lin Huifa
• Suzuki Shoichi
• Nakashima Daiichiro
• Nogami Toshizo
• Ouchi Wataru
• Yoshimura Tomoki
• Fukui Takahisa

Classifications

• H04W74/0866

  using a dedicated channel for access · CPC title

• H04W72/1268

  of uplink data flows · CPC title

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W74/02

  Hybrid access · CPC title

• H04W74/0816 Primary

  with collision avoidance · CPC title