Qualcomm Incorporated

Liangming Wu

Chenxi Hao

Chao Wei

Qiaoyu Li

Yu Zhang

Wanshi Chen

Hao Xu

Changlong Xu

Min Huang

Kai Chen

Jian Li

Jing Jiang

Peter S Gaal

Joseph Binamira Soriaga

Yuwei Ren

Kangqi Liu

Bo Chen

Ori Shental

Thomas J Richardson

Tingfang Ji

Sony Akkarakaran

Gabi Sarkis

Wei Liu

Ruiming Zheng

Ruifeng Ma

Jing Dai

Rui Hu

Parisa Cheraghi

Kexin Xiao

Tao Luo

Xiaoxia Zhang

Juan Montojo

Yi Huang

Mostafa Khoshnevisan

Renqiu Wang

Xipeng Zhu

Sharad Deepak Sambhwani

Peng Cheng

Jilei Hou

Lei Xiao

Wei Xi

Peyman Razaghi

Jing X Sun

Huilin Xu

Wei Jennifer Yang

Taesang Yoo

Amir Aminzadeh Gohari

Pavan Kumar Vitthaladevuni

Ying Wang

Neng Wang

Methods, systems, and devices for wireless communications are described. In some systems, a device may select antenna elements from a planar array to transmit or receive an orbital angular momentum (OAM) beam. The device may determine a first area (e.g., a first ring area) based on an angular direction over which the device can communicate an OAM beam with a second device and may determine a second area (e.g., a second ring area) on the planar array based on projecting the first area on the planar array. The device may select a set of antenna elements from the planar array that are located within the second area. The device may determine a complex-valued weight for each antenna element of the selected set of antenna elements and may transmit or receive an OAM beam to or from the second device via the set of antenna elements according to the angular direction.

Generating and steering orbital angular momentum beams

Aspects of the disclosure relate to wireless communication utilizing a modulation and coding scheme that selectively or dynamically applies probabilistically-shaped coding (PCS) to modulate a transmitted waveform. A communication device may determine whether to apply PCS. If PCS is to be applied, the device can encode the message based on a systematic code; and if PCS is not to be applied, the device can encode the message based on a non-systematic code. Other aspects, embodiments, and features are also claimed and described.

Constellation shaping-related coding selection

Apparatus, methods, and computer-readable media for facilitating CSI feedback in multiple-TRP communication are disclosed herein. An example method of wireless communication by a UE includes receiving, from a base station, a report configuration message triggering a channel state feedback procedure, the UE and the base station operating in a multiple transmission and reception point (multiple-TRP) communication mode, the report configuration message requesting a multiple-TRP transmission value including at least one of a quantity of layer indicator (LI) values and a strongest TRP indicator (STI) value. The example method also includes generating channel state information (CSI) information based on the receiving of the report configuration message, the CSI information including the multiple-TRP transmission value. The example method also includes transmitting, to the base station, a report including the generated CSI information.

Methods and apparatus to facilitate CSI feedback in multiple-TRP communication

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a UE may receive multiple CSI report configurations that include at least a first CSI report configuration and a second CSI report configuration that are associated with one or more CSI reference resources; determine a dependency between the first CSI report configuration and the second CSI report configuration; and calculate at least one of a first CSI for the first CSI report configuration or a second CSI for the second CSI report configuration based at least in part on an assumption of a joint transmission using the one or more CSI reference resources, wherein the assumption is based at least in part on the determination of the dependency. report at least one of the first CSI in a first CSI report or the second CSI in a second CSI report. Numerous other aspects are provided.

Correlation of multiple channel state information reports for multi-layer communication

A method of wireless communication by a user equipment (UE), comprises inputting sensor data, captured at the UE, to a local machine learning model. The method also includes extracting features from the sensor data, with the local machine learning model, while anonymizing the sensor data. The method further includes transmitting the features to a base station, and receiving a handover decision from the base station based on the features. A method of wireless communication by abase station inputs anonymized sensor feature data, received from a user equipment (UE), into a network machine learning model. The base station also inputs handover decision information into the network machine learning model. The method further includes inferring a handover decision based on the handover decision information and the anonymized sensor feature data, and transmitting the handover decision to the UE.

Machine learning handover prediction based on sensor data from wireless device

Wireless communications systems and methods related to CSI feedback are provided. A user equipment (UE) receives an indication of a restricted set of frequency domain (FD) beamforming components and one or more channel state information reference signals (CSI-RSs). The UE may transmit channel state information (CSI) report indicating a plurality of precoding coefficients based on the received one or more CSI-RSs and the restricted set of FD beamforming components.

Indication of information in channel state information (CSI) reporting

Certain aspects of the present disclosure provide techniques for using subband precoding for uplink transmissions. In some cases, a UE may receive, from a network entity, information indicating one or more of sounding reference signal (SRS) ports selected by the network entity and associated linear combination coefficients, determine subband precoding based at least in part on the selected SRS ports and linear combination coefficient, and transmit a physical uplink shared channel (PUSCH) with the subband precoding.

Uplink subband precoding via sounding reference signals precoded by frequency domain bases

A method performed by a user equipment (UE) generates local gradients for a federated learning task. The method calculates a gradient Sum-Power level based on the local gradients. The method receives a mapping between gradient Sum-Power levels and scaling factors for channel inversion coefficients to process a data block into an unencoded uplink signal. The method also determines a channel inversion coefficient based on a scaling factor obtained from the mapping and the calculated gradient Sum-Power level. The method applies analog modulation and the channel inversion coefficient to the data block to form the unencoded uplink signal. The method further transmits, to a network, the unencoded uplink signal on shared uplink resources for an over-the-air computation of global gradients for the federated learning task.

Gradient dataset aware configuration for over-the-air (OTA) model aggregation in federated learning

Apparatus, methods, processing systems, and computer readable mediums for beam management in multi-TRP scenarios are disclosed. An exemplary method generally includes receiving a channel state information reference signal (CSI-RS) resource configuration from at least one base station (BS) for one or more transmission hypotheses, wherein the CSI-RS resource configuration includes CSI-RS resources corresponding to at least a first downlink (DL) demodulation reference signal (DMRS)-port-group and a second DL DMRS-port-group, performing one or more CSI-RS measurements for the one or more transmission hypotheses based, at least in part on the CSI-RS resource configuration, and determining, for each of the one or more transmission hypotheses, a preferred reception beam for communicating with the at least one BS based, at least in part, on the one or more CSI-RS measurements.

Beam management enhancements for multi-TRP scenarios

Certain aspects of the present disclosure provide techniques for reporting channel state information (CSI) with spatial and time domain compression.

Channel state information (CSI) with spatial and time domain compression

Aspects of the disclosure relate to a wireless user equipment (UE) configured to receive a downlink in a network configured for full duplex communication. The UE receives from the network an indication of a maximum rank of an uplink from an interfering, aggressor UE. The UE measures interference of a signal from the aggressor UE, and based on the measurement, determines one or more rank values for the aggressor UE, less than or equal to the maximum rank. The UE may further determine one or more channel parameters for downlink transmissions the UE receives, corresponding to the determined rank values. The UE then transmits a channel state information (CSI) report that includes an indication of at least one of the one or more rank values for the aggressor UE. The CSI report may further include the determined channel parameters. Other aspects, embodiments, and features are also claimed and described.

Interference rank indication by a victim node in full duplex

Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for sending, from an upper layer at a transmitting device to a lower layer at the transmitting device, an indication by which the lower layer determines that a packet is to be transmitted as either an initial transmission or as a retransmission. The lower layer at the transmitting device may then determine a transmission process for transmitting the packet based on the indication, and the transmitting device may transmit the packet in accordance with the transmission process. Because the lower layer may identify whether the packet is to be transmitted as either the initial transmission or the retransmission, the lower layer may adapt the transmission process to improve the chances that the packet is received by a receiving device or to limit overhead.

Assistance signaling for radio link control retransmissions

Certain aspects of the present disclosure relate to methods and apparatus relating to rate matching for new radio (NR) physical downlink shared channel (PDSCH) and physical uplink shared channel (PUSCH). In certain aspects, a method includes receiving a rate matching resource (RMR) configuration from a serving cell. The method also includes identifying one or more first resource elements (REs) to be rate matched around at least in part based on a transmission numerology associated with the RMR configuration, wherein the one or more first REs are used for reference signal (RS) transmission in the serving cell or a neighboring cell. The method further includes mapping a physical downlink shared channel (PDSCH) to one or more second REs not including the first REs.

Rate matching for new radio (NR) physical downlink shared channel (PDSCH) and physical uplink shared channel (PUSCH)

In a probabilistic amplitude shaping (PAS) system, a distribution matching (DM) component may receive a uniform bit sequence with equal probabilities, which may be converted into symbols with a desired probability distribution (e.g., Gaussian). For example, the probability distribution may use inner constellation points associated with a lower energy and/or power more frequently and outer constellation points associated with a higher energy and/or power less frequently. In general, the DM component may map binary bits to positive amplitudes with a non-uniform distribution according to a DM rate that is based at least in part on a signal-to-noise ratio (SNR), which may vary significantly in a spatial and frequency selective wireless channel. Accordingly, some aspects described herein relate to configuring DM parameters and codeword and resource mappings in a spatial and frequency selective wireless channel.

Configuration for probabilistic amplitude shaping system on spatial and frequency selective wireless channel

Certain aspects of the present disclosure provide techniques for precoder matrix quantization for compressed channel state information (CSI) feedback. A method for wireless communications by a user equipment (UE) includes receiving a CSI report configuration for frequency domain compressed precoder matrix feedback. The CSI report configuration configures the UE to report, for a plurality of selected beams at a plurality of time domain taps, a frequency domain compression basis vector and a plurality of linear combination coefficients associated with the frequency domain compression. For each of the beams, the UE groups the time domain taps into at least first and second groups. The groups each can have zero, one, or more than one time domain taps. The UE quantizes the corresponding linear combination coefficients and/or frequency domain compression basis vectors based on the grouping.

Precoder matrix quantization for compressed CSI feedback

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Beijing, China

Liangming Wu