According to the exemplary embodiment of the present disclosure, the method and the device for adapting a link of a V2X communication system acquires an appropriate parameter value to efficiently perform the link adaptation in the V2X communication system, thereby improving an average data transfer rate, determines an MCS level based on the state value (effective SNR) acquired in consideration of the device movement speed to build a V2X communication system which adaptively operates according to the state of the device.

There is provided mechanisms for radio link adaptation at a transmit and receive point. A method is performed by a network node. The method includes obtaining LLR values for a block of codewords. The LLR values are output from an information decoder decoding the block of codewords. The block of codewords has been communicated over a radio link between the transmit and receive point and a terminal device. The method includes performing radio link adaptation of the radio link depending on the LLR values by selecting radio link adaptation parameter values. Which radio link adaptation parameter values to select depends on the LLR values.

A method for transmitting data by a base station in a wireless communication system according to the present disclosure comprises: transmitting a reference signal (RS) to one or more user equipments (UEs); receiving, from the one or more UEs, channel quality indication (CQI) information based on the reception of the RS; determining a modulation and coding scheme (MCS) level on the basis of the CQI information; transmitting data to the one or more UEs in accordance with the MCS level; and receiving, from the one or more UEs, an acknowledgment/negative acknowledgment (ACK/NACK) with respect to the transmitted data, wherein the MCS level is determined on the basis of the CQI information and an offset determined according to a machine learning process, and the machine learning process for determining the offset is performed by configuring the selecting of one of a plurality of MCS offset values as an operation value of machine learning, configuring an error rate for the operation value as a state value of the machine learning, and configuring a processing rate at a level where the error rate satisfies a predetermined reference, as a compensation value of the machine learning.

A method for transmitting data by a base station in a wireless communication system according to the present disclosure comprises: transmitting a reference signal (RS) to one or more user equipments (UEs); receiving, from the one or more UEs, channel quality indication (CQI) information based on the reception of the RS; determining a modulation and coding scheme (MCS) level on the basis of the CQI information; transmitting data to the one or more UEs in accordance with the MCS level; and receiving, from the one or more UEs, an acknowledgment/negative acknowledgment (ACK/NACK) with respect to the transmitted data, wherein the MCS level is determined on the basis of the CQI information and an offset determined according to a machine learning process, and the machine learning process for determining the offset is performed by configuring the selecting of one of a plurality of MCS offset values as an operation value of machine learning, configuring an error rate for the operation value as a state value of the machine learning, and configuring a processing rate at a level where the error rate satisfies a predetermined reference, as a compensation value of the machine learning.

A target network device of a terminal device receives N data packets of a first service and auxiliary information from a source network device, where the auxiliary information indicates a transmission status of at least one data packet before the N data packets; and the target network device determines the transmission status of the at least one data packet.

A target network device of a terminal device receives N data packets of a first service and auxiliary information from a source network device, where the auxiliary information indicates a transmission status of at least one data packet before the N data packets; and the target network device determines the transmission status of the at least one data packet.

In a message modulated according to orthogonal amplitude-modulated component signals in 5G or 6G, the receiver can attempt to recover a corrupted message by evaluating the modulation quality of each component signal in each message element. The modulation quality of each component signal may be determined according to a distance between the amplitude of the component signal and the closest amplitude level of the modulation scheme, as determined by a prior demodulation reference. The modulation quality may also be determined by the SNR and amplitude stability of the component signal. Upon detecting a corrupted message, the receiver can identify the faulted message elements according to modulation quality, and if the faulted message elements are clustered in a portion of the message (as is common), the receiver can request that just the faulted portion be retransmitted, saving time and bandwidth.

This document generally relates to transmitting a feedback message from a first node to a second node, where the message indicates both a detection result of receiving at least a portion of a transport block, and addition information that indicates to the second node how to set one or more parameters for a subsequent transmission. In various embodiments, the message includes a value, such as an M-bit binary value that indicates both the detection result and the additional information.

A Bluetooth adaptive rate selection method can include: enabling the first Bluetooth module in the local device and the second Bluetooth module in a peer device to be in a connection state; in a first time period, obtaining RSSI of the radio frequency signal sent by the second Bluetooth module and received by the first Bluetooth module, and PER of the data packet sent by the first Bluetooth module or the maximum number of consecutive retransmissions of the data packet sent by the first Bluetooth module; and selecting the data transmission rate between the first Bluetooth module and the second Bluetooth module adaptively according to one of the PER and the maximum number of consecutive retransmissions and the RSSI.

According to some embodiments, a method for use in a network node of transmitting a measurement signal for evaluating a quality of a link from a cell comprises: determining (412) a first virtual identifier for a first link; determining (414) a group of one or more channel state information reference signal (CSI-RS) sequences that are available to be transmitted from the cell; associating (420) one or more of a frequency resource allocation, a time resource allocation, a CSI- RS sequence from the group of one or more CSI-RS sequences, and a layer allocation with the first virtual identifier; and transmitting (422) a first CSI-RS for measurement using one or more of the frequency resource allocation, time resource allocation, CSI-RS sequence, and layer allocation associated with the first virtual identifier.