A wireless device receives one or more configuration parameters for a two-step random access channel (RACH) procedure. The wireless device transmits, based on the configuration parameters, a message, for the two-step RACH, comprising a preamble and a transport block. The wireless device receives, during a discontinuous reception (DRX) active time of a DRX operation of the wireless device, a response to the message. The DRX active time may be based on a time window for receiving the response to the message. The time window may start at least one symbol after a transmission occasion of the transport block.

A method, apparatus, and a computer-readable storage medium are provided for radio link adaptation. In an example implementation, the method may include a user equipment receiving measurement configuration from a network node; determining power level and/or distribution characteristics of a signal received from the network node; determining mean interference at the user equipment and a number of physical cell identifiers detected by the user equipment; transmitting the distribution characteristics of the signal, the mean interference, and the number of physical cell identifiers that are detected by the user equipment to the network node; and receiving a transmission from the network node, the transmission transmitted by the network node using a modulation and coding scheme determined based at least on the distribution characteristics, the mean inference, and the number of physical cell identifiers.

A wireless communication device includes a processor, a baseband signal processing circuit and a wireless transceiver circuit. The processor determines a transmission need, determines a transmission rate according to the transmission need and a channel condition, and provides data and information regarding the transmission rate to the baseband signal processing circuit. The information regarding the transmission rate includes at least one of a selected transmission standard, a selected physical layer data transmission rate and a selected modulation and coding scheme. The baseband signal processing circuit is coupled to the processor and processes the data according to the information regarding the transmission rate to accordingly generate a packet. The wireless transceiver circuit is coupled to the baseband signal processing circuit and transmits the packet.

Assigning an appropriate modulation profile for an orthogonal frequency-division multiplexing (OFDM) channel. The current modulation profile assigned to a specific OFDM modem for communicating over a specific OFDM channel is examined to determine whether to consider reassigning the specific OFDM modem to a different modulation profile. Only upon determining consideration should be given, an assessment is made as to which modulation profile, of a set of candidate modulation profiles available to that OFDM modem for communicating over the specific OFDM channel, should be assigned to the specific OFDM modem using linear domain averaging over the OFDM subcarriers of the ratios between a Mean Error Rate (MER) threshold per subcarrier for the specific OFDM modem and the MER reported by the specific OFDM modem per subcarrier. A new modulation profile is assigned to the specific modem based on the assessment.

A method for determining MCS level is provided. The method can include obtaining by a first terminal, at least one piece of measurement information which includes a measurement position indicating a time-frequency position occupied by information sent via a direct communication interface for transmitting V2X businesses of the Internet of Vehicles, and a measurement value indicating channel quality of a channel for transmitting the information. The method can include obtaining by the first terminal, a target measurement value corresponding to a target measurement position from the at least one piece of measurement information, determining by the first terminal, a quality parameter of a target channel for transmitting the target information according to the target measurement value, and determining by the first terminal, a maximum available MCS level corresponding to the target channel according to the quality parameter of the target channel.

Embodiments of the present disclosure relates to a method and a device, the method comprising the steps of acquiring message A including a PRACH preamble and a PUSCH, and transmitting message A, wherein the PUSCH includes a DM-RS related to a DM-RS sequence, and the DM-RS sequence is related to a RAPID of the PRACH preamble.

A method for client steering in a multiple access point (AP) network is performed by a controller and comprises the steps of: receiving, from one or more APs, pieces of related information for the client steering; on the basis of the pieces of information, determining a particular candidate BSS for the client steering from among a plurality of BSSs; and transmitting a request message for the client steering to an AP operating the particular candidate BSS.

A multiple-input multiple-output (MIMO) communication system that addresses three major challenges in airborne MIMO communications, namely, antenna blockage due largely to the movement and orientation of the airborne platforms, the presence of unknown interference inherent to the intended application, and the lack of channel state information (CSI) at the transmitter. The system is implemented on a Diagonal Bell-Labs Layered Space-Time (D-BLAST) MIMO architecture and includes spatial spreading to counter antenna blockage, temporal spreading to mitigate signal to interference and noise ratio degradation due to intended or unintended interference, and a simple low rate feedback scheme to enable real time adaptation in the absence of full transmitter CSI.

A user equipment, a base station, a joint training device for a user equipment and a base station, a joint channel estimation and feedback system for a user equipment and a base station, a feedback channel state information generation method, a channel matrix generation method, a joint training method, and a joint channel estimation and feedback method for a user equipment and a base station in wireless communication. Feedback channel state information is generated by a user equipment according to an actual pilot signal, and a deeper residual learning neural network is introduced into a base station to reconstruct a channel matrix of the base station according to the feedback channel state information. As such, it is possible that the base station can reconstruct a complete high-resolution channel matrix even if an actually received pilot signal is an incomplete low-resolution part.

Example communication methods and apparatus are described. One example method includes sending a first training signal by a first device to a second device on a reflection path. The first device sends a second training signal to the second device on the reflection path. The reflection path is a transmission path formed after the first training signal and the second training signal are reflected by a surrounding object. An interval between the first training signal and the second training signal is used to indicate to decode data.