US 11,917,681 B2
Wireless communication device, wireless communication method, and computer program
Naoki Kusashima, Tokyo (JP)
Assigned to SONY CORPORATION, Tokyo (JP)
Appl. No. 17/261,879
Filed by Sony Corporation, Tokyo (JP)
PCT Filed Aug. 1, 2019, PCT No. PCT/JP2019/030130
§ 371(c)(1), (2) Date Jan. 21, 2021,
PCT Pub. No. WO2020/031819, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 2018-150339 (JP), filed on Aug. 9, 2018.
Prior Publication US 2021/0307072 A1, Sep. 30, 2021
Int. Cl. H04W 74/08 (2009.01); H04W 72/0453 (2023.01); H04W 74/00 (2009.01)
CPC H04W 74/0816 (2013.01) [H04W 72/0453 (2013.01); H04W 74/006 (2013.01); H04W 74/0841 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A wireless communication device configured as a user equipment (UE) and comprising:
a transceiver; and
circuitry configured to:
set a first resource and at least one second resource to transmit an uplink signal of a RACH procedure to a base station (BS), wherein
the first resource is selected from a set of resources set by information in an RRC laver,
the at least one second resource is designated by the BS for use by the wireless communication device in a case when the wireless communication device determines that the first resource is not available, the at least one second resource being designated by downlink information in a physical laver,
the downlink information in the physical layer being one of:
a notice of the one or more second resources in a channel occupancy time (COT), the notice being included in downlink control information (DCI), or
a slot format indicator (SFI) included in the DCI that identifies the one or more second resources, and
the first resource occurs before the at least one second resource;
determine whether the first resource is clear or busy:
upon determining that the first resource is busy, determine that the at least one second resource is clear; and
transmit the uplink signal of the RACH procedure to the BS via the at least one second resource.