A method and an apparatus for STR in a wireless LAN that supports multi-links are disclosed. An operating method of a first communication node comprises the steps of: transmitting a first frame to a second communication node through a first link from among multi-links; receiving, from the second communication node, a response frame for the first frame through the first link; checking a channel occupancy time in a second link from among the multi-links on the basis of first information included in the response frame; and performing a sensing operation in a preset section after the end of the channel occupancy time in the second link.

A channel access method, a terminal device, and a network device are provided. The method includes: monitoring a request to send-downlink control channel according to first configuration information of the request to send-downlink control channel; and determining, according to a monitoring result from monitoring the request to send-downlink control channel, whether to perform channel access.

According to an embodiment of the present disclosure, a user equipment (UE) may receive downlink control information (DCI) in a first fixed frame period (FFP) for frame based equipment (FBE) from a base station (BS), and perform a channel access procedure for a scheduled uplink (UL) transmission based on the DCI. In a first state in which it is indicated that the scheduled UL transmission is related to channel occupancy initiated by the BS, and the UE should perform channel sensing for the scheduled UL transmission, the UE may perform the channel access procedure for the scheduled UL transmission based on whether a resource for the scheduled UL transmission allocated by the DCI is confined within the first FFP in which the DCI is received.

A first device within a multi-link device having a plurality of wireless links including a first link and a second link, may include one or more processors configured to receive a first frame on the first link while communicating with a second device for transmission of a second frame on the second link. The one or more processors may decode a portion of the first frame to determine a first duration of no medium access. The one or more processors may determine, a second duration comprising a remaining transmission duration on the second link. The one or more processors may determine whether the first duration is greater than or equal to the second duration. In response to the first duration being greater than or equal to the second duration, the one or more processors may defer channel access on the first link until an end of the first duration.

Methods and apparatuses for channel occupancy sharing with a sidelink in a wireless communication system. A method of a user equipment (UE) includes receiving, from a base station (BS), a set of configurations, determining a channel occupancy initiated by the BS based on the set of configurations, determining a set of resources for a first sidelink transmission within the channel occupancy based on the set of configurations, and determining a sidelink channel access procedure associated with the first sidelink transmission based on the set of configurations. The method further includes performing the sidelink channel access procedure and transmitting, to at least one other UE, the first sidelink transmission within the channel occupancy upon successfully performing the sidelink channel access procedure.

Methods, systems, and apparatuses are provided for listen-before-talk (LBT) mode for random access response (RAR) in a wireless communication system so that RAR indication of channel access type and cyclic prefix (CP) extension can be more efficient. A method of a User Equipment (UE) can comprise initiating a random access procedure, receiving a RAR, wherein the RAR comprises a channel access type indication, and determining whether to perform LBT for a Msg3 based on the channel access type indication in RAR.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for sidelink discontinuous reception (DRX) that indicates a DRX on duration. The UE may selectively perform sensing for sidelink resource selection outside of the DRX on duration. Numerous other aspects are described.

A method and a user equipment of performing resource switching in an unlicensed spectrum are provided. A current set of resources in the unlicensed spectrum is utilized by a UE for performing LBT attempts for transmission of an RACH message to a base station. One or more LBT attempts for transmissions from the UE to the base station are performed over the current set of resources during a current RACH procedure. The current set of resources is switched to a new set of resources in the unlicensed spectrum to be utilized by the UE in a new RACH procedure after a failure count reaches a pre-configured threshold during the current RACH procedure. The failure count is calculated at least based on a count of LBT failure over the current set of resources during the current RACH procedure.

A wireless device (10) sends LBT (listen before talk) based uplink wireless transmissions on a serving transmission beam (22) to an access node (100-1, 100-2). The serving transmission beam (22) is selected from a plurality of transmission beams (21, 22, 23). Further, the wireless device (10) detects LBT failures on the serving transmission beam (22). Based on the number of the detected LBT failures on the serving transmission beam (22), the wireless device (10) sends a failure report to the access node (100-1, 100-2. The failure report indicates the detected LBT failures on the sewing transmission beam (22).

Technologies directed to reducing medium access contention within a wireless network are described. One method includes a first wireless device (e.g., an access point (AP) or mesh station) receiving first data with a first schedule from a second wireless device. Both wireless devices operate on a first channel or an adjacent channel in a wireless network. The first schedule defines a first interval during which the second wireless device transmits or receives frames on the first channel or the second channel. The first wireless device generates a second schedule that defines a second interval during which the first wireless device transmits or receives frames on the first or second channels, the second interval being non-overlapping with the first interval. First wireless device sends second data with the second schedule to the second AP device and communicates a data frame with a device connected to the first wireless device according to the second schedule.