A method and apparatus for transmitting and receiving a signal in a wireless communication system, according to an embodiment of the present invention, comprise: iteratively mapping a PUCCH sequence to each of resource blocks (RBs) within an interlace; and transmitting a PUCCH on the interlace, wherein a phase shift (PS) value of the PUCCH sequence may be changed on the basis of an RB index of each of the RBs.

A method, system and apparatus are disclosed. In one or more embodiments, a wireless device is provided. The wireless device includes processing circuitry configured to: perform a listen before talk, LBT, recovery procedure based at least on one of expiration and triggering of a first timer where the first timer is associated with a LBT failure criterion that is met for at least a first bandwidth part, BWP, associated with a first secondary cell, SCell. The LBT recovery procedure includes one of: switching to a second BWP associated with the first SCell for LBT recovery where the second BWP does not meet the LBT failure criterion, and selecting a second SCell for LBT recovery.

The present disclosure proposes a transmitting multi-link device (MLD) including a first station (STA) operating on a first link and a second STA operating on a second link. The transmitting MLD acquires a first transmission opportunity (TXOP) in the first link and transmits a first physical protocol data unit (PPDU) in the first link. The transmitting MLD receives a block acknowledgment (BA) frame for the first PPDU in the first link and transmits a second PPDU in the first link. The transmitting MLD changes a responder of the first TXOP based on not receiving, from the receiving MLD, a BA frame for the second PPDU within a preconfigured time interval in the first link.

Disclosed are a communication technique which merges, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail, security and safety related services, etc.) on the basis of 5G communication technology and IoT-related technology. Disclosed are a method and apparatus in which a terminal performs satellite communication.

In a wireless local area network (WLAN) system, in a case where data is being transmitted through a link, a transmission multi-link device (MLD) may perform back-off through another link during a time interval in which a PPDU is not transmitted through the link for the data transmission. Further, the transmission MLD may perform back-off again if a TXOP of the link for the data transmission is not over when a BC becomes 0.

Disclosed are a method and device for direct communication in a wireless LAN. An operation method of a first device comprises the steps of: transmitting a first frame, which is for setting up a direct communication link, to a second device over one or more links among multiple links; receiving a second frame, which is a response to the first frame, from the second device over the one or more links; and directly communicating with one or more peer devices over the direct communication link when the second frame is received.

An apparatus used in a UE includes processing circuitry and memory. To configure the UE for operating in an unlicensed spectrum in a 5G NR system at a carrier frequency of above 52.6 GHz, the processing circuitry is configured to perform a CCA procedure to assess occupancy of a communication channel in the unlicensed spectrum. A reservation signal is encoded for transmission on the communication channel when the CCA procedure is successful. The reservation signal occupies a time interval between completion of the CCA procedure and a starting symbol of an uplink transmission opportunity. Data PUSCH is encoded for transmission to a base station during the transmission opportunity and following the transmission of the reservation signal.

Disclosed is a method of transmitting an uplink signal by a user equipment in a wireless communication system. The method includes receiving first information related to an uplink (UL) transmission beam, determining a listen-before-talk (LBT) beam based on the first information, and transmitting the uplink signal through the UL transmission beam based on success of LBT based on the LBT beam.

Techniques for identifying downlink waveforms for initial access in a random access procedure may include a user equipment (UE) configured to identify a configuration for a downlink (DL) waveform for a message to be received from a base station during a random access channel (RACH) procedure in response to an indication of the configuration for the DL waveform. The UE may also be configured to receive, from the base station, the message in response to the configuration for the DL waveform being determined.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may receive a first message associated with initiating a random access channel (RACH) procedure. The network node may communicate one or more second messages associated with completing the RACH procedure, wherein a type of the RACH procedure is associated with a type of analog to digital converter used for communication. Numerous other aspects are described.