Qualcomm Incorporated

Igor Gutman

Tao Luo

Gideon Shlomo Kutz

Assaf Touboul

Junyi Li

Shay Landis

Joseph Patrick Burke

Ran Berliner

Guy Wolf

Navid Abedini

Sharon Levy

Yavuz Yapici

Pushkar Bajirao Kulkarni

Juergen Cezanne

Michael Levitsky

Ariel Yaakov Sagi

Abdelrahman Mohamed Ahmed Mohamed Ibrahim

Carl Hardin

Peter S Gaal

Ronen Greenberger

Oren Matsrafi

Yehezkel Hadid

Robert Zokaim

Haim Mendel Weissman

Yossi Waldman

Yehonatan Dallal

Alecsander Petru Eitan

Michael Lee McCloud

Konstantinos Dimou

Christian Pietsch

Noam Zach

Ory Eger

Parisa Cheraghi

Alexander Dorosenco

Sumit Verma

Paul J Draxler

Shmuel Vagner

Vijay Chellappa

Meir Tsadik

Tingfang Ji

Alexandros Manolakos

Alexei Yurievitch Gorokhov

Hung Dinh Ly

Jianghong Luo

Heechoon Lee

Hua Wang

Gokul Sridharan

Amit Bar-Or Tillinger

Rahul Malik

Jong Hyeon Park

Jeremy Darren Dunworth

Ronen Shaked

Tal Oved

David Yunusov

Sang-June Park

Shahin Mehdizad Taleie

Sanghoon Kim

Cong Nguyen

Behnam Sedighi

Elias Dagher

Amit Bar-or Tillinger

Alexander Vladimir Sverdlov

Ori Shental

Ori Ben Shahar

Peter Zillmann

Damin Cao

Shubham Ahuja

Ajay Devadatta Kanetkar

Ghaith Shabsigh

Zhaole Xiao

Gal Keret

Mendel Menachem Aizner

Yuval Neeman

Methods, systems, and devices for wireless communications are described. A user equipment (UE) and network entity may determine a physical layer (PHY) signature for the network entity to include in one or more wake-up signals (WUSs) transmitted to the UE. The UE may use the determined PHY signature to validate a WUS received during a monitoring occasion. For example, the UE may compare a PHY signature of the received WUS to the determined PHY signature. If the PHY signature of the received WUS matches the determined PHY signature, the UE may wake up in accordance with the WUS. If the PHY signature of the received WUS does not match the determined PHY signature, the UE may remain in a sleep mode. The UE may transmit an indication of an adversarial attack based on the received WUS not including the determined PHY signature or including a different PHY signature.

Physical layer signature for wake-up signals

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may generate an input signal including information for transmission over a wireless channel. The UE may perform a first waveform shaping stage on the input signal to increase an in-band emissions ratio and reduce a peak-to-average power ratio (PAPR) of the input signal. The UE may perform a second waveform shaping stage on the output of the first waveform shaping stage to reduce an adjacent channel leakage ratio of the output of the first waveform shaping stage. The UE may then transmit a signal over the wireless channel based on an output of the second waveform shaping stage.

Techniques for waveform compression

Methods, systems, and devices for wireless communication are described. In some systems, a second network entity (e.g., a transmitting device) may transmit first signaling to a second network entity (e.g., a receiving device) to indicate one or more frequency domain residual sideband (FDRSB) parameters associated with the second network entity. The FDRSB parameters may be associated with an imbalance between an in-phase component and a quadrature phase component of the first signaling. The second network entity may generate and transmit second signaling that is configured to have the one or more FDRSB characteristics. The first network entity may determine whether the second network entity is a source of the second signaling based on the one or more FDRSB characteristics of the second signaling and the one or more FDRSB parameters indicated by the first signaling.

Communication security based on frequency domain residual sideband characteristics

Certain aspects of the present disclosure provide techniques for digital pre-distortion (DPD). An apparatus for wireless communication generally includes a power amplifier (PA); a first DPD circuit, a second DPD circuit, and a transmitter. The first DPD circuit is generally configured to: obtain an input signal; apply a first DPD to the input signal to generate a first resulting signal; and output the first resulting signal to the second DPD circuit. The second DPD circuit is generally configured to: obtain the first resulting signal from the first DPD circuit; apply a second DPD to the first resulting signal to generate a second resulting signal; and output the second resulting signal to the PA. The PA is generally configured to amplify the second resulting signal to generate an amplified second resulting signal. The transmitter is generally configured to transmit the amplified second resulting signal to a second apparatus.

Digital pre-distortion and assistance information signaling

Systems and techniques are provided for performing wireless communications. In some aspects, a user equipment (UE) may receive from a first wireless node via a first channel, a first transmission comprising a first artificial noise (AN) signal combined with a first data signal, wherein the first AN signal is generated based on channel state information (CSI) of the first channel. The UE may receive, from a second wireless node via a second channel, a second transmission comprising a second AN signal combined with a second data signal, wherein the second AN signal is generated based on CSI of the second channel and is different from the first AN signal. The UE can determine a data message based on the first transmission and the second transmission.

Multi-transmission artificial noise (AN) cancellation

A first network node may transmit a first indication of a PHY signature pool including a plurality of PHY signatures to a second network node. The first network node may select at least one PHY signature from the plurality of PHY signatures. The first network node may transmit a second indication of the selected at least one PHY signature to the second network node. The first network node may transmit at least one message to the second network node based on the selected at least one PHY signature. The second network node may demodulate the at least one message based on the at least one PHY signature.

Index modulation for PHY signature selection

A method for wireless communication at a wireless device and related apparatus are provided. In the method, the wireless device receives an indication of a power adjustment between a set of resource allocations from the first time instance to the second time instance. The set of resource allocations is associated with wireless communication between a network node and a user equipment (UE) via the wireless device. Then, the wireless device adjusts a power backoff (BO) of the wireless device based on the indication of the power adjustment between the set of resource allocations. The method provides power adjustment signaling to the wireless device to enable dynamic adjustment of the power BO of the wireless device based on the resource allocation of incoming signals. Hence, it improves the energy efficiency of the wireless device.

Power adjustment signaling for repeaters

An apparatus is disclosed for frequency-based predistortion signal generation. In an example aspect, the apparatus includes a predistortion linearizer circuit configured to be coupled to an input of an amplifier. The amplifier has non-linearities associated with multiple frequencies. The multiple frequencies include a first subset of frequencies and a second subset of frequencies. The predistortion linearizer circuit is also configured to accept an input signal. The predistortion linearizer circuit is additionally configured to generate, based on the input signal, a compensation signal to attenuate the non-linearities existing within the first subset of frequencies more than the non-linearities existing within the second subset of frequencies. The predistortion linearizer circuit is further configured to generate a pre-distorted signal based on the input signal and the compensation signal.

Frequency-based predistortion signal generation

A network node may identify at least one adversarial device. The network node may transmit a fake configuration to the at least one adversarial device. The fake configuration may be associated with a PHY technique. The fake configuration may be transmitted to the at least one adversarial device based on a location of the at least one adversarial device. The at least one adversarial device may be identified based on non-possession by the at least one adversarial device of any valid credential. The network node may transmit a correct configuration to a genuine receiving device. The network node may transmit the fake configuration and the correct configuration in parallel or based on time division multiplexing. Accordingly, security of the overall system may be improved as the adversarial device may waste time and power performing algorithmic operations based on the fake configuration.

Intentionally fake configuration transmission

This disclosure provides systems, methods, and devices for wireless communication that support power headroom differential reporting for reference resource signals transmitted at different transmission power than other uplink transmissions. In a first aspect, a method of wireless communication includes determining a power headroom value, by a user equipment (UE), using a maximum configured transmission power and a transmission power configured for an uplink transmission at a configured modulation and coding scheme (MCS). The UE determines a reference resource signal power headroom value using the maximum configured transmission power and a reference resource signal transmission power configured for a reference resource signal transmission, calculates a reference resource power headroom differential between the power headroom value and the reference resource signal power headroom value, and transmits a report including the uplink transmission power headroom value and the reference resource power headroom differential. Other aspects and features are also claimed and described.

Power headroom differential reporting

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter device may transmit, to each receiver device of a plurality of receiver devices communicating with the transmitter device over a wideband channel using frequency division multiplexing, an indication of a bandwidth portion of the wideband channel to be used by the receiver device for performing measurements associated with a non-linear model of the transmitter device. The transmitter device may transmit, to each receiver device of the plurality of receiver devices, one or more wideband reference signals associated with training the non-linear model. The transmitter device may receive a plurality of digital pre-distortion (DPD) coefficients, obtain a set of DPD coefficients based at least in part on combining the plurality of DPD coefficients, and perform DPD processing in accordance with the set of DPD coefficients. Numerous other aspects are described.

Digital pre-distortion signaling

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit a first message indicating a capability to linearize a digital signal outputted by an analog front end of the UE, the digital signal being associated with a first transmission. The UE may receive the first transmission, the first transmission being associated with a gain state comprising a set of configurations associated with a plurality of amplifiers at the UE, and the UE may linearize the digital signal associated with the first transmission based at least in part on the gain state, where linearizing the digital signal comprises obtaining an output voltage value corresponding to an input voltage value associated with the analog front end. In some examples, the UE may obtain an output voltage value from a lookup table (LUT) of a set of LUTs configured to the UE or generated by the UE.

Analog front end linearization

Aspects are provided for generation and transmission of MDMRS which allow matching of nonlinear model impact or properties between DMRS and data in DFT-s-OFDM waveforms as well as CP-OFDM waveforms. A UE transmits, to a network entity, an MDMRS generated from a DMRS. The MDMRS has a PAPR distribution matching a PAPR distribution of a signal including data in an uplink channel. A target PAPR of the MDMRS is based on a modulation scheme of the data. The UE also transmits the data in the uplink channel, where the uplink channel includes a PUCCH or a PUSCH. As a result of the ability of MDMRS to match the nonlinear impact of DMRS and PUSCH or PUCCH, the network entity may compensate for any EVM that may occur as a result of PAPR reduction by a nonlinear operator of the UE, and communication performance may thereby be improved.

DMRS with dynamic and controllable PAPR properties

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive, from another wireless communication device, an indication of an averaging parameter associated with a transmitter nonlinear model. The wireless communication device may estimate the transmitter nonlinear model based at least in part on the indication of the averaging parameter associated with the transmitter nonlinear model. Numerous other aspects are described.

Indication of an averaging parameter associated with a transmitter nonlinear model

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, using at least one wake up receiver associated with the UE, one or more wake up signals for beam tracking (WUTs). The UE may measure a quality of each WUT, of the one or more WUTs. The UE may activate a main receiver associated with the UE to perform a beam recovery procedure based at least in part on a measured quality of at least one WUT, of the one or more WUTs. Numerous other aspects are described.

Wake up signal for beam tracking

Growing community of inventors

Ramat Gan, Israel

Igor Gutman