The present disclosure relates to uplink cooperative multi-User Equipment (UE) cooperative transmission such as Multiple-Input Multiple-Output (MIMO) transmission. Source data of a source UE that is to be transmitted via uplink cooperative transmission by multiple UEs, is transmitted to at least one cooperative UE over an SL. The source data is associated with an identifier for identifying the UE to the network equipment as a source of the source data. The multiple UEs transmit the source data and the identifier in an uplink direction to the network equipment. The network equipment receives the source data from the multiple UEs in a cooperative transmission such as cooperative MIMO transmission, and obtains the identifier for identifying the source UE as the source of the source data.

Techniques for differentiating orthogonally modulated symbols from different transmitters using one or more antenna arrays are described. According to some techniques, symbols received at one or more antenna arrays are grouped together by matching respective sets of receive beams for each symbol. In this manner, symbols received from a first transmitter at a first location can be differentiated from symbols received from a second transmitter at a second location, and both sets of symbols can be successfully decoded. When the symbols are received using frequency hopping, the receive beams for each symbol can be sorted according to path length, which improves performance, and also enables precise location of the transmitter(s).

Described are devices, systems and methods for scheduling multi-user (MU) multiple input multiple output (MIMO) transmissions in a fixed wireless access (FWA) system. One method for scheduling a large number of user devices in a wireless communication system includes a preselection process to pare down the number of user devices to be simultaneously scheduled, and then scheduling that subset of users. In an example, and assuming each user device communicates over a corresponding wireless channel, the preselection process includes determining a number of sets based on a first characteristic of the wireless channels, where each set includes at least one user device, and then determining a subset of user devices by selecting at most one user device from each of the sets. The scheduling of the selected subset of users is based on a scheduling algorithm and a second characteristic of the wireless channels.

Described are devices, systems and methods for scheduling multi-user (MU) multiple input multiple output (MIMO) transmissions in a fixed wireless access (FWA) system. One method for scheduling a large number of user devices in a wireless communication system includes a preselection process to pare down the number of user devices to be simultaneously scheduled, and then scheduling that subset of users. In an example, and assuming each user device communicates over a corresponding wireless channel, the preselection process includes determining a number of sets based on a first characteristic of the wireless channels, where each set includes at least one user device, and then determining a subset of user devices by selecting at most one user device from each of the sets. The scheduling of the selected subset of users is based on a scheduling algorithm and a second characteristic of the wireless channels.

A data receiving method, a terminal device, and a system are provided. The terminal device can be connected to an external antenna device, and when the terminal device is connected to the external antenna device, first antennas of the terminal device and second antennas of the external antenna device form a MIMO antenna array. The method includes: acquiring, by the terminal device, first data received by at least one of the first antennas and a composite signal sent by the external antenna device; demultiplexing the composite signal by a demultiplexer to obtain second data corresponding to at least one of the second antennas; and processing the first data and the second data by a processor, so as to obtain target data.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless node may transmit, to a reconfigurable intelligent surface (RIS), a first signal modulated using a first modulation signature, wherein the first modulation signature is an inverted modulation signature associated with a second modulation signature to be applied by the RIS. The first wireless node may receive, from a second wireless node, a second signal indicating that the first signal has been redirected by the RIS and received by the second wireless node. Numerous other aspects are described.

Methods and apparatus for multi-destination wireless transmissions as disclosed. An example multi-destination transmitter includes a direction determiner to determine directions for wireless transmission of data to destination devices and a transmission handler to: select a subset of the destination devices that are associated with different ones of a plurality of antennas as indicated by the directions determined by the direction determiner; and transmit the data to the subset of the destination devices via the plurality of antennas.

A base station (BS) communicatively connected to a group including a first user equipment (UE) and a second UE can implement a method. The method includes determining (316 or 416), by processing hardware of the base station, a channel state information (CSI) process configuration for the group. The method also includes transmitting (318) a control signal including the CSI process configuration to the group, and transmitting (336) a reference signal to the group in accordance with the CSI process configuration. The method further includes, in response to transmitting the reference signal to the group, receiving (354) from at least one UE of the group an indication of joint channel state of the group.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first device may receive, from a second device, a sounding reference signal (SRS) prior to a scheduled communication. The first device may transmit, to the second device, an indication that a measurement of the SRS does not satisfy a threshold, if the measurement of the SRS does not satisfy the threshold. The first device may activate, based at least in part on the transmitting the indication and before the scheduled communication, a multi-point communication mode. Numerous other aspects are described.

Various embodiments comprise systems, methods, architectures, mechanisms or apparatus for determining a subsequent time slot position for each of a plurality of spatially distributed relays configured for time slot based beamforming supporting a communication channel between a source and a destination.