A method and apparatus for performing an initial access procedure in a wireless communication system is provided. A low cost user equipment (UE) transmits a list of capabilities to a network, and receives a reject message from the network when at least one of the capabilities is not supported by the network. The list of capabilities may be transmitted during a random access procedure via a random access preamble on a physical random access channel (PRACH) or a message 3 on a physical uplink shared channel (PUSCH). The reject message may be received during the random access procedure a random access response or an acknowledge message for the message 3.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive a system information block (SIB) including configuration information associated with configuring operation of a plurality of repeaters, wherein repeaters in the plurality of repeaters are configured to receive signals from first wireless communication devices and forward the signals to second wireless communication devices. The wireless communication device may communicate in a set of resources based at least in part on the configuration information included in the SIB. Numerous other aspects are provided.

A wireless local area network (WLAN) protocol allowing a Transmit Opportunity (TXOP) holder to share the TXOP with other stations. An intent to share the TXOP is communicated to the Access Point (AP). Upon gaining channel access, the TXOP holder directly or indirectly communicates that the TXOP can be shared with other STAs, after which scheduling information (time and duration) are shared with the STAs. When the TXOP occurs, the STAs can access the channel at the time and for the duration specified, thus providing increased use of the TXOP to improve efficiency.

A communication method and a related apparatus for data transmission in vehicle-to-everything (V2X) communication, the apparatus including at least one processor and a non-transitory computer-readable memory storing a program to be executed by the at least one processor, the program including instructions for obtaining a first parameter value of an uplink, obtaining a second parameter value of a sidelink, and transmitting, according to a comparison between the first parameter value and the second parameter value, at least one of an uplink media access control protocol data unit or a sidelink media access control protocol data unit, where the uplink is a wireless communications link from the apparatus to a network device, and where the sidelink is a wireless direct transmission link between the apparatus and another terminal device.

An enhanced LBT procedure (200) mitigates unnecessary delays in delivering transmissions between User Equipment and base stations over unlicensed spectrum. A UE or base station selects a particular CAPC corresponding to an intended transmission (225) based on an intelligent mapping of different types of transmission payload (e.g., transmission payload other than or in in addition to pre-defined, QoS-related UP message data payload) to different CAPCs. Most (if not all) of the mapped CAPCs corresponding to the different types of transmission payload are of a higher priority than a lowest priority CAPC (212-222), resulting in channel access procedures that are more commensurate with respective transmission payloads. The intelligent mapping may indicate different priorities among different types of transmission payload and/or different types of messages, and/or may indicate which type of transmission is to govern selection of a CAPC when multiple types of transmission payload are included in a single, intended transmission.

Embodiments of a system and method for providing DRX enhancements in LTE systems are generally described herein. In some embodiments, a system control module is provided for controlling communications via a communications interface. A processor is coupled to the system control module and is arranged to implement an inactivity timer and an on-duration timer for determining an active time for monitoring subframes on the physical downlink control channel for control signals, the processor further monitoring subframes after the active time.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless node may receive an indication of a configuration of one or more communication links associated with an enhanced duplex mode of at least one of the first wireless node or a second wireless node. The first wireless node may receive an indication of a random access channel (RACH) configuration associated with the second wireless node. The first wireless node may transmit a request to modify the RACH configuration, where the request to modify the RACH configuration is based at least in part on the configuration of the one or more communication links and the RACH configuration. Numerous other aspects are provided.

A method for transmitting a physical layer protocol data unit (PPDU) and a device using the same are provided. The device receives a trigger frame for requesting a transmission of a high efficiency (HE) trigger-based (TB) PPDU and transmits the HE TB PPDU. A duration of the HE TB PPDU is calculated based on a duration of the trigger frame.

Certain aspects of the present disclosure provide techniques for sidelink communications in an unlicensed spectrum. A method that may be performed by a first user equipment (UE) of a plurality of UEs includes sensing a frequency band to determine whether the frequency band is idle, the sensing occurring prior to a first time period. In some examples, the method may include transmitting, by the first UE, one or more signals over the frequency band during the first time period based on determining that the frequency band is idle, the one or more signals indicating that the frequency band is reserved for wireless communication between the plurality of UEs during the first time period.

Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may receive, from a second UE, a control message that indicates a duration of time the second UE has reserved at least a first subchannel of a first subband of a set of shared spectrum subbands. The duration of time may include a quantity of time periods. The first UE may transmit, during a time period of the quantity of time periods and in a second subchannel of the first subband, a power reservation signal that indicates a transmission power associated with the first UE beginning transmission to a third UE in a second subband of the set of shared spectrum subbands and partway through the time period. The first UE may transmit signaling to the third UE in the second subband partway through the time period and after transmitting the power reservation signal.