The application relates to link adaptation for extremely high throughput (EHT) systems. In order to transmit parameters for EHT link adaptation, a control ID field in the HT control field of a MAC header is used to indicate that the A-control field of the HT control field contains EHT link adaptation information, and to indicate the presence of an additional EHT link adaptation extension field containing further EHT link adaptation information. Alternatively, B25 of the control information of the A-control field is used to indicate that the control field contains EHT link adaptation information, and to indicate the presence of an additional EHT link adaptation extension field containing further EHT link adaptation information.

In one embodiment, information passing mechanism between the two connected optical transceivers is provided. Within the first optical transceiver, Rx 1 calculates the current condition of the uplink channel and passes this information together with the condition of the downlink channel that it receives from Tx 2 to Tx 1. The Tx 1 uses the downlink channel condition that it receives from the Rx 1 to generate signal with appropriate modulation format, shaping factor, baudrate and coding scheme for maximizing the downlink's capacity. The Tx 1 then transmits this information together with the uplink channel condition received from Rx 1 to Rx 2. The Rx 2 uses the information about the modulation format, baudrate, shaping factor and coding scheme that it receives from Tx 1 for the reception of information-bearing signal. The Rx 2 then calculates the transmission channel condition of the downlink channel and passes this information together with the uplink channel condition that it receives from Tx 1 to Tx 2. The Tx 2 then uses the uplink channel condition that it receives from the Rx 2 to generate signal with optimized modulation format, shaping factor, baudrate and coding scheme for maximizing the uplink's capacity. The information exchange process between the two connected optical transceivers then repeats in an endless loop.

Systems, methods, apparatuses, and computer program products for channel state information (CSI) configuration and reporting for multi-transmission reception point (TRP) operation are provided. One method may include configuring a user equipment (UE), by a network node, to provide independent channel state information (CSI) feedback per transmission reception point (TRP) and to indicate additional information. The configuring of the UE may include configuring the UE with at least one of several reporting options for generating a combined channel state information (CSI) report.

A base station may transmit one or more configuration parameters for a cell. The one or more configuration parameters may indicate a periodic resource configuration. The periodic resource configuration may be activatable by predetermined values of: a hybrid automatic repeat request process identifier (HARQ ID) field of a first downlink control information (DCI) format; and a redundancy version (RV) field of the first DCI format. The base station may transmit a DCI based on a second DCI format without at least one of the HARQ ID field or the RV field. The base station may activate the periodic resource configuration based on: a size of the HARQ ID field of the DCI and/or the RV field of the DCI being zero; and the periodic resource configuration being in an inactive state.

Certain aspects of the present disclosure relate to methods and apparatus for uplink control information (UCI) reporting. In certain aspects, a method includes receiving an indication of a number of symbols of a subframe available for uplink transmission. In certain aspects, the method further includes rate matching uplink control information (UCI) to the subframe based on the indication.

Embodiments of this application provide a data transmission method and a device. The method includes: obtaining, by a terminal, first indication information or second indication information, where the first indication information is used to indicate that a reference signal is carried in a resource unit, and the second indication information is used to indicate that no reference signal is carried in a resource unit; and performing, by the terminal, data transmission according to the first indication information or the second indication information. The reference signal can be properly configured in the embodiments.

Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a UE may measure a first reference signal, associated with a frequency band of a long term evolution (LTE) system, and a second reference signal associated with a frequency band of a new radio (NR) system. The frequency band of the NR system may overlap the frequency band of the LTE system. The UE may determine first channel state feedback, associated with the frequency band of the LTE system, and second channel state feedback, associated with the frequency band of the NR system, based at least in part on the first reference signal and the second reference signal, respectively. The UE may report the first channel state feedback or the second channel state feedback in uplink control information (UCI). Other aspects are provided.

Embodiments of this application provide a precoding matrix indication method, a communications apparatus, and a storage medium. A precoding matrix of each of K frequency-domain units satisfies W=W.sub.1×W.sub.2, and elements in W.sub.2 in the K frequency-domain units are represented by P elements that are relatively few. A terminal device reports third indication information, where the third indication information includes first indication information and the second indication information, and the first indication information and the second indication information are independently encoded. The first indication information is used to indicate the P elements, and the second indication information is used to indicate P. Therefore, the terminal device can adjust a quantity of information bits of the second indication information based on a channel condition change, thereby improving precoding matrix reporting efficiency.

Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for prioritizing, at a user equipment (UE), sidelink CSI reports received from other UEs. In one example, the UE may be configured to transmit sidelink CSI reports (e.g., received from other UEs) separately from other CSI reports (e.g., CSI reports generated by the UE), and the UE may prioritize sidelink CSI reports for transmission based on the priorities of the UEs from which the CSI reports are received. The UE may then aggregate and transmit the prioritized sidelink CSI reports to a network entity. In another example, the UE may be configured to transmit sidelink CSI reports with other CSI reports in a same channel, and the UE may prioritize the sidelink CSI reports over the other CSI reports for transmission to a network entity.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a single downlink control information (DCI) message scheduling a simultaneous downlink transmission and uplink transmission in an unpaired band. In some aspects, the single DCI message may include a modulation and coding scheme (MCS) field having one or more bits that indicate a first MCS for the downlink transmission. The UE may determine a second MCS for the uplink transmission based at least in part on an offset from the first MCS for the downlink transmission. Numerous other aspects are provided.