Qualcomm Incorporated

Virewirx, Inc.

Other

Xcom Labs, Inc.

International Business Machines Corporation

Jing Jiang

Tingfang Ji

Joseph Binamira Soriaga

Wanshi Chen

Krishna Kiran Mukkavilli

John Edward Smee

Peter S Gaal

Naga Bhushan

Gabi Sarkis

Seyedkianoush Hosseini

Yang Yang

Hao Xu

Wei Jennifer Yang

Chih-Ping Li

Peter Pui Lok Ang

Alexandros Manolakos

Jing X Sun

Changlong Xu

Tao Luo

Chong Li

Wei Zeng

Yi Huang

Jay Kumar Sundararajan

June Namgoong

Renqiu Wang

Hari Sankar

Jamie Menjay Lin

Kambiz Azarian Yazdi

Alexei Yurievitch Gorokhov

Heechoon Lee

Seyong Park

Chao Wei

Linhai He

Ying Wang

Jian Li

Kai Chen

Liangming Wu

Junyi Li

Jilei Hou

Hung Dinh Ly

Raghuraman Krishnamoorthi

Wei Yang

Gavin Bernard Horn

Thomas J Richardson

Amir Aminzadeh Gohari

Jing Lei

Shrinivas Kudekar

Huilin Xu

Tamer Adel Kadous

Piyush Gupta

Seyed Ali Akbar Fakoorian

Pavan Kumar Vitthaladevuni

Xiaoxia Zhang

Sony Akkarakaran

Haitong Sun

Yu Zhang

Sundar Subramanian

Anthony Edet Ekpenyong

Mostafa Khoshnevisan

Xiao Feng Wang

Santosh Paul Abraham

Siddhartha Mallik

Tao Tian

Muhammad Nazmul Islam

Muhammad Sayed Khairy Abdelghaffar

Shailesh Patil

Makesh Pravin John Wilson

Bilal Sadiq

Fuyun Ling

Brian Clarke Banister

Juergen Cezanne

Aamod Dinkar Khandekar

Hwan Joon Kwon

Peter J Black

Shimman Arvind Patel

Ashok Mantravadi

Farhad Meshkati

Yeliz Tokgoz

Joseph Patrick Burke

Saurabha Rangrao Tavildar

Yongle Wu

Rotem Cooper

Alberto Rico Alvarino

Wooseok Nam

Durga Prasad Malladi

Arumugam Chendamarai Kannan

Karl Georg Hampel

Chih-Hao Liu

Raghu Narayan Challa

Dake He

Zhifei Fan

Miguel Griot

Weimin Duan

Stephen Jay Shellhammer

Keiichi Kubota

Danlu Zhang

Ashish Jagmohan

Aspects presented herein provide a low PAPR waveform design based on resource spreading, pulse shaping, and/or dynamic MCS configuration, such that a transmitting wireless device may set IBO of its PA closer to the saturation point of the PA to enhance the PA efficiency. In one aspect, a first network node receives waveform information from a second network node, where the waveform information includes at least one of: one or more first parameters associated with a first waveform type or one or more second parameters associated with a second waveform type. The first network node processes data based on the one or more first parameters associated with the first waveform type or the one or more second parameters associated with the second waveform type. The first network node transmits a waveform based on the processed data, where the waveform is the first waveform type or the second waveform type.

Low peak-to-average power ratio waveform generation

Methods, systems, and devices for wireless communications are described. In some examples, a transmitting device associated with one or more non-coherent demodulation reference signal ports may transmit data including a phase change estimation reference signal with multiple reference signal groups. In some examples, multiple different phase change estimation reference signal ports may be code-division multiplexed to transmit the phase change estimation reference signal in the same set of reference signal groups using a different orthogonal cover code for each phase change estimation reference signal port. In some other examples, the different phase change estimation reference signal ports may be used for transmitting the phase change estimation reference signal in the different time-division multiplexed sets of reference signal groups. In such cases, by assigning two phase change estimation reference signal ports to two TDM sets, the two phase change estimation reference signal ports may be time-division multiplexed.

Multiple-port phase change estimation reference signals for discrete Fourier transform-spread orthogonal frequency-division multiplexing (DFT-S-OFDM) transmissions

Dynamic frozen polar codes for probabilistic shaping are described. An apparatus is configured to map transmission bits to an EC-polar code. The transmission bits include first data bits, second data bits, EC bits, and shaping bits. The first data bits correspond to frozen bit locations of the EC-polar code, the shaping bits correspond to information bit locations of the EC-polar code, and the EC bits and the second bits both correspond to remaining locations of the EC-polar code. The apparatus is configured to shape the transmission bits to shaped transmission bits based on the mapping, the EC-polar code, and an addition operation on the transmission bits including the EC bits and the second data bits. The apparatus is configured to transmit, to a receiver network device, the shaped transmission bits.

Dynamic frozen polar codes for probabilistic shaping

In certain scenarios, resource preemption may occur. A user equipment (UE) is configured to monitor for a preemption indication based on a specific downlink configuration. This configuration provides information about whether preemption is identified within a data space in terms of resource blocks. The UE receives data transmissions from a base station at different times and a preemption indication in a group common physical downlink control channel. Based on this preemption indication and the downlink configuration, the UE determines if a portion of the shared downlink resources occupied by the initial data is preempted from use. If the resources are not preempted, the UE proceeds to decode the initial data.

Ultra-reliable low-latency communication indication channelization designs

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a demodulation reference signal (DMRS) and perform a filtering procedure on frequency-domain symbols of the DMRS to obtain a frequency-domain noise signal associated with the frequency-domain symbols. The UE may perform a spur detection procedure on the frequency-domain noise signal to detect one or more frequency spurs associated with the frequency-domain symbols. In addition, the UE may estimate a frequency of the frequency spurs. In some implementations, the UE may transmit information indicating spur parameters associated with the frequency spurs (e.g., including the estimated frequency) to a network entity. The UE may receive a control message indicating a rate matching pattern for subsequent communications, the rate matching pattern based on the spur parameters. The UE and the network entity may communicate according to the rate matching pattern.

Spur detection, estimation, and mitigation

This disclosure provides systems, methods and apparatuses for transmissions with non-transparent precoder cycling. A network node generates a precoding matrix including a number of sub-matrices equal to a number of antenna groups. A first sub-matrix for a first antenna group is the same for each frequency domain resource unit of a frequency domain resource group. A phase of each subsequent sub-matrix for each subsequent antenna group is shifted to be orthogonal for each frequency domain resource unit. The network node applies the precoding matrix to both a data signal and a demodulation reference signal (DMRS) of a transmission for each frequency domain resource unit of the frequency domain resource group and transmits the precoded transmission via the antenna groups. A UE receives the transmission having non-transparent precoder cycling, estimates a channel of the transmission based on the precoding matrix, and demodulates the data signal based on the estimated channel.

RB/PRG-level precoder cycling based on virtual DMRS ports

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of an antenna port mapping from a network entity. The antenna port mapping may be between a tracking reference signal and a corresponding reference signal, the antenna port mapping indicating a mapping of a tracking reference signal port to a plurality of reference signal antenna ports associated with the corresponding reference signal. The UE may receive a tracking reference signal via the tracking reference signal port based on the antenna port mapping. The UE may perform a channel measurement procedure using the tracking reference signal based on the mapping.

Port association with multiple demodulation reference signal (DMRS) ports

Methods, systems, and devices for wireless communications are described. Techniques described herein provide for formulating single carrier waveforms into an orthogonal frequency-division multiple access (OFDMA) framework. To fit into the cyclic prefix OFDM (CP-OFDM) grid, a frequency domain fast Fourier transform (FFT) may be applied to the single carrier waveform, a bandwidth expansion and spectrum shaping may be applied to the output of the FFT and inverse FFT (IFFT) processing may be applied to the output of the bandwidth expansion and spectrum shaping. The output of the IFFT may then be represented in an OFDM compatible manner.

Techniques for cyclic prefix compatible formulation of single carrier waveforms

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured with a bundling factor, may first generate a codebook, and may then bundle a quantity of bits into a single bit according to the bundling factor (e.g., may compress the sequence of bits into a smaller, second set of bits, where each bit of the second set of bits represents a quantity of the sequence of bits equal to the bundling factor). The UE may support cross downlink control information (DCI) bundling, in which case each bundle of the sequence of bits may be based on the bundling factor, instead of being based on the DCI (e.g., a given bundle may include feedback bits corresponding to occasions of multiple grants).

Feedback codebooks with bundling

A transmitter is provided that shapes uniformly-distributed bits into a non-uniformly distributed bits according to a parity check matrix of a linear code such that a product of the parity check matrix and the non-uniformly distributed bits equals the uniformly-distributed bits. Similarly, receiver is provided that recovers the uniformly-distributed bits from the non-uniformly distributed bits through a multiplication of the non-uniformly-distributed bits with the parity check matrix.

Linear-code-based probabilistic shaping

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, using a set of resources that are shared between a first radio access technology (RAT) and a second RAT, control signaling that includes a dynamic spectrum sharing (DSS) configuration for a shared data channel. The UE may receive one or more indicators associated with the first RAT, the second RAT, or both, to coordinate communications for the shared set of resources. The UE may communicate with the network using the first RAT or the second RAT based on applying one or more of the indicators. To further support DSS, the UE may transmit UE capability information to indicate whether the UE is capable of DSS for the first RAT and the second RAT, and may apply one or more multiplexing modes for communications using the first RAT and the second RAT.

Techniques for dynamic spectrum sharing across radio access technologies

Disclosed are techniques for wireless sensing. In an aspect, a network node detects a collision between at least one wireless communication signal scheduled to be transmitted by the network node and two or more bundled radar reference signals scheduled to be transmitted by the network node, wherein the at least one wireless communication signal is scheduled to be transmitted during a gap between a first radar reference signal and a second radar reference signal of the two or more bundled radar reference signals; performs a collision avoidance operation based on detection of the collision, and transmits the two or more bundled radar reference signals.

Handling collisions between bundled radar reference signals and communication signals in wireless communications systems

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first device may receive, from a second device, multiple code blocks (CBs) of a transport block. The first device may identify a CB bundle of one or more contiguous CBs that include one or more CBs for which negative feedback is to be reported. The first device may transmit, to the second device, an indication of the CB bundle. Numerous other aspects are described.

Control block bundle for retransmission

Methods, systems, and devices for wireless communications are described. A transmitting device may perform a lifting procedure on a base graph including multiple variable nodes and multiple check nodes to obtain a lifted graph. The lifting procedure may include replacing each edge between multiple variable nodes and multiple check nodes of the base graph with a respective identity matrices with respective circular shift values. The base graph may include a punctured variable node which corresponds to each of one or more check nodes of the plurality of check nodes via multiple edges. The transmitting device may encode multiple information nodes and multiple parity nodes according to the lifted graph. The transmitting device may transmit a signal including multiple information bits and multiple parity bits based on encoding the multiple information nodes and the multiple parity nodes.

Fast converging low-density parity-check techniques

Methods, systems, and devices for wireless communications are described. In some examples, a transmitting device, such as a user equipment (UE) or a network entity, may encode an information bit vector into multiple code blocks using a polar code partitioned into multiple sub-blocks having a same block length in accordance with a polar transformation associated with a modulation scheme. In some examples, each code block of the multiple code blocks may be encoded using a respective sub-block of the multiple sub-blocks. Additionally, the transmitting device may interleave respective bits of each code block of the multiple code blocks using a respective interleaver of multiple interleavers. As such, the transmitting device may transmit the respective interleaved bits of each code block of the multiple code blocks over a respective bit channel of multiple bit channels, where each bit channel of the multiple bit channels is associated with a respective reliability.

Polar coding techniques for higher-order modulation schemes

Growing community of inventors

San Diego, CA, United States of America

Jing Jiang