Patent ID: 11917681
Assignee: SONY GROUP CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
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.