Abstract: Methods, systems, and devices for sounding reference signal (SRS) transmission for massive uplink (UL) transmitters are described. An example method for wireless communication includes determining, by a wireless device, one or more sounding reference signal (SRS) resources, and performing, using one or more SRS ports in the one or more SRS resources, an SRS transmission to a network node. Another example method for wireless communication includes receiving, by a network node from a wireless device, a sounding reference signal (SRS) transmission over one or more SRS resources, wherein the wireless device is configured to determine the one or more SRS resources and perform the SRS transmission using one or more SRS ports in the one or more SRS resources.

Abstract: Disclosed are methods, apparatuses, and systems for wireless communications including techniques for improving the performance of multiple transmission-reception points. In one aspect, a method of wireless communications is disclosed. The method includes receiving, at a wireless device, a report configuration associated with a reference signal (RS). The method further includes determining channel state information, wherein the channel state information comprises at least one of: a RS indicator, a rank indicator (RI), a precoding matrix indicator (PMI), or a channel quality index (CQI), and reporting the channel state information to a network node.

Abstract: Techniques are described for performing physical uplink shared channel (PUSCH) transmission. An example wireless communication method includes performing, by a communication device, an uplink transmission, where the uplink transmission is performed using a precoder, where the precoder is based on one or more sounding reference signal (SRS) resources, one or more ranks, and/or one or more precoding matrix indicators, and where one precoding matrix indicator of the one or more precoding matrix indicators indicates a precoding matrix for a rank.

Abstract: Disclosed are methods apparatuses and computer readable media. In one aspect, a method includes receiving a rank indication or a first index associated with the rank indication, wherein the rank indication is used to determine G rank values, wherein G is a positive integer, and receiving a matrix indication or a second index associated with the matrix indication, wherein the matrix indication is used to determine a basic matrix. The method further includes determining a precoding matrix for a transmission according to at least one of the G rank values or the basic matrix.

Abstract: An example method includes performing a plurality of measurements relating to a channel status; determining a plurality of bases according to the plurality of measurements, with each basis corresponding to one of a plurality of domains; and transmitting a report that includes information about the plurality of bases to a wireless communication node. The information identifies the plurality of bases and indicates coefficients on the plurality of bases from which the plurality of measurements can be decoded.

Abstract: A wireless communication method includes receiving, by a wireless communication device from a network, at least one port parameter, determining, by the wireless communication device, at least one uplink codebook parameter, and determining, by the wireless communication device, a precoder for an uplink transmission based on the at least one uplink codebook parameter and the at least one port parameter.

Abstract: Presented are systems and methods for uplink frequency selective precoding. A wireless communication device may receive a first signaling from the wireless communication node. The first signaling may include a plurality of precoding information associated with a plurality of port groups. The wireless communication device may determine signals precoded according to the plurality of precoding information. The wireless communication device may transmit the signals to the wireless communication node.

Abstract: Disclosed are methods, systems, apparatuses, and computer readable media for generating a wireless device report for assisting a network node with frequency domain and time domain synchronization. In one aspect, a method of wireless communication is disclosed. The method includes receiving, at a wireless device, a report configuration associated with a reference signal (RS). The method further includes determining, at the wireless device, channel state information (CSI), wherein the CSI comprises at least one of an RS indicator, a rank indicator (RI), a precoding matrix indicator (PMI), Doppler information, or a channel quality index (CQI), according to the report configuration. The method includes reporting, at a wireless device, the channel state information (CSI).