Methods, systems, and devices for wireless communications are described. A group of random access channel opportunities are identified over which to transmit a preamble associated with a random access channel procedure. A preamble sequence group associated with the identified group of random access channel opportunities is determined based on a repetition level associated with the preamble sequence group. At least one downlink message associated with the random access channel procedure is received based on the repetition level.

A network device comprises a memory, a radio system, a control line, and a processor. The radio system can be controllably configured to operate in a first channel state or a second channel state. The first channel state enables transmission of first client device reception data on a first channel and reception of first client device transmission data on the first channel. The second channel state enables transmission of second client device reception data on a second channel and reception of second client device transmission data on the second channel. The control line is arranged to provide a control signal to the radio system so as to place the radio system in either the first channel state or the second channel state.

Methods are provided for UWB ranging based on contention-based multiple access. A method performed by a first UWB device includes transmitting an IM for initiating UWB ranging, receiving an AM from a second UWB device within a contention period, transmitting a first RM, receiving a second RM corresponding to the first RM from the second UWB device, and transmitting an FM.

A method for providing bi-directional ultra-wide band (UWB) ranging is provided. The method by a first ultra-wide band (UWB) device includes transmitting an initiation message for initiating UWB ranging, receiving at least one device access message from at least one second UWB device within a contention period, transmitting at least one reply message, receiving at least one device reply message corresponding to the at least one reply message from one or more of the at least one second UWB device, and transmitting, to the one or more second UWB device, a final message based on UWB ranging performed using the device access message, the reply message, and the device reply message.

The present invention relates to a wireless communication terminal and a wireless communication method for a multi-user EDCA operation, and more particularly, to a wireless communication terminal and a wireless communication method for performing a combination of a legacy EDCA operation and a multi-user EDCA operation. To this end, provided are a wireless communication terminal including: a communication unit; and a processor configured to control transmission and reception of a wireless signal through the communication unit, wherein the processor updates enhanced distributed channel access (EDCA) parameters for channel access, the EDCA parameters being updated based on an EDCA parameter set selected from a first EDCA parameter set and a second EDCA parameter set, and performs channel access based on the updated EDCA parameters and a wireless communication method using the same.

Embodiments herein disclose, e.g., a method performed by a user equipment, UE, for handling communication in a wireless communication network, wherein the UE is in a connected mode in a first beam connected to a radio network node. The UE detects a beam failure of the first beam and transmits, to the radio network node, a preamble of a random access procedure in a second beam, wherein the preamble or a random access resource used for the preamble is associated with a beam failure recovery. The UE then receives a random access response, RAR, from the radio network node, wherein the RAR includes an uplink, UL, grant but without a temporary identity that is used by a medium access control, MAC, entity during a random access procedure.

A method for sidelink beam reporting for device to device (D2D) communication includes receiving, by a first electronic device and from a base station, configuration of one or more beam management reference signals (BMRSs) on a sidelink between the first electronic device and a second electronic device and configuration of one or more sidelink random access channels (SL-RACHs), receiving and measuring, by the first electronic device and based on the received configuration of one or more BMRSs, a plurality of BMRSs transmitted by the second electronic device, and transmitting, by the first electronic device and based on the received configuration of one or more SL-RACHs, a SL-RACH to the second electronic device.

A method performed by a wireless device for determining an identity of the wireless device, MsgB RNTI, in a wireless communications network during a random access procedure is provided. The wireless device transmits a random access preamble on a RACH at a random access occasion. It also transmits a message on a PUSCH that corresponds to the random access preamble. Further, the wireless device determines an MsgB RNTI as the sum of a first identity, RA-RNTI, and an offset that is an integer greater than 1, wherein the RA-RNTI is based on a sum comprising terms corresponding to at least the index of a first OFDM symbol, the index of a frequency resource, and the index of a first time slot that identifies the time/frequency resources of the random access occasion.

A terminal includes a control unit that performs at least one of the following in a case where a 2-step Random Access Channel (RACH) configuration is to be configured for a Bandwidth Part (BWP) reusing a RACH configuration parameter configured for another uplink BWP as a 2-step RACH configuration parameter, newly configuring the 2-step RACH configuration parameter, or configuring a default parameter as the 2-step RACH configuration parameter; and a transmitting unit that transmits a MessageA in the 2-step RACH by using the 2-step RACH configuration parameter.

In a wireless local area network (WLAN) system, a transmitting multi-link device (MLD) may defer the transmission of a PPDU on a first link, even if a back-off counter of a non-primary link reaches zero, as long as a back-off counter of a primary link does not reach zero. When the transmission of the PPDU is deferred, the back-off counter may be kept at zero.