Qualcomm Incorporated

Xiaojie Wang

Piyush Gupta

Junyi Li

Xiaoxia Zhang

Jing X Sun

Sony Akkarakaran

Tao Luo

Lik Hang Silas Fong

Peter S Gaal

Juan Montojo

Jung Ho Ryu

Yisheng Xue

Hua Wang

Ozcan Ozturk

Chih-Hao Liu

Arumugam Chendamarai Kannan

Wooseok Nam

Yan Zhou

Rajat Prakash

Srinivas Yerramalli

Navid Abedini

Jelena Damnjanovic

Gabi Sarkis

Tianyang Bai

Mahmoud Taherzadeh Boroujeni

Marwen Zorgui

Gene Wesley Marsh

Jianghong Luo

Kobi Ravid

Mohammad Tarek Fahim

Aleksandar Damnjanovic

Shuanshuan Wu

Sherif Elazzouni

Disclosed are systems and techniques for wireless communications. In one example, a method for wireless communications performed at a user equipment (UE) can include receiving one or more sidelink communications including a plurality of data packets. In some aspects, the method can include determining a respective priority level associated with each data packet of the plurality of data packets. In some examples, the method can include transmitting at least one Physical Sidelink Feedback Channel (PSFCH) message using a PSFCH format, the PSFCH format including a plurality of Hybrid Automatic Repeat Request (HARQ) responses corresponding to at least a portion of the plurality of data packets, wherein the portion of the plurality of data packets are arranged based on the respective priority level associated with each data packet of the plurality of data packets.

Feedback prioritization for sidelink communications

Systems, methods, and devices for wireless communication that support backscatter-based positioning. A method of wireless communication includes receiving a tag device indicator that indicates a tag capability of a tag device. The method also includes generating a tag configuration associated with transmission of a backscatter signal based on a positioning reference signal (PRS). The tag configuration indicates a frequency shifting parameter based on a frequency shifting capability of a tag device, a phase scrambling parameter based on a phase scrambling capability of the tag device, or a combination thereof. The method further includes transmitting the tag configuration.

Backscatter-based positioning

Methods, systems, and devices for wireless communications are described. A first device may identify first sidelink communication timing of a first UE and a second sidelink communication timing of a second UE. The first UE and the second UE may be in communication with the first device. The first device may determine a sidelink timing offset to be used by the first device in repeating a sidelink message between the first UE and the second UE. The first device may determine the sidelink timing offset based at on the first sidelink communication timing and the second sidelink communication timing. The first device may repeat the sidelink message between the first UE and the second UE in accordance with the sidelink timing offset.

Sidelink timing advance for a repeater

Methods, systems, and devices for wireless communications are described. For instance, a first wireless device may transmit, to a second wireless device, a first signal for probing an energy state of the second wireless device. The first wireless device may monitor for a second, backscattered signal indicating the energy state of the second wireless device and may transmit, to the second wireless device, an indication of resources for harvesting energy based on monitoring for the second, backscattered signal. The first wireless device may transmit, to the second wireless device and over the resources, a third signal distinct from the first signal and associated with harvesting energy.

Energy-state feedback for efficient wireless power transfer to IoT devices

Disclosed are Techniques for wireless communication are provided. In an aspect, a radio frequency identification (RFID) device receives, from an RFID tag, a first backscattered signal, receives, from the RFID tag, a second backscattered signal having a known time offset relative to the first backscattered signal, and performs interference cancellation on the first backscattered signal based on the second backscattered signal.

Interference cancellation for backscattered reference signals

Methods, systems, and devices for wireless communication at a user equipment (UE) are described. A UE may receive control signaling including an indication of time and frequency resources that are configured for semiautonomous uplink scheduling from the UE. The UE may then transmit a semiautonomous uplink scheduling message including a request for a set of uplink transmission resources or parameters for an upcoming uplink transmission. The UE may determine the set of uplink transmission resources or parameters based on one or more interference measurements performed on the time and frequency resources that are configured for semiautonomous uplink scheduling from the UE. The UE may then receive, in response to transmitting the semiautonomous uplink scheduling message, a message approving or declining the request for the set of uplink transmission resources or parameters.

Semiautonomous uplink scheduling

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, scheduling information that indicates resource allocations for transmitting multiple sidelink transport blocks (TBs) and one or more receiving UEs associated with the multiple sidelink TBs. The UE may transmit one or more sidelink TBs of the multiple sidelink TBs based at least in part on the resource allocations and the one or more receiving UEs indicated in the scheduling information. Numerous other aspects are described.

Multi-transport block sidelink scheduling

Aspects presented herein may enable an entity that is receiving (or reading) reflected/backscattered signals from an IoT device to differentiate the reflected/backscattered signals from other reflections (e.g., noise or signals bounced from other objects). In one aspect, a wireless device transmits an indication of a positioning session to an IoT device, wherein the indication initiates the positioning session for the IoT device. The wireless device transmits, based on the positioning session, a set of PRSs to the IoT device via a plurality of transmission occasions. The wireless device receives, from the IoT device based on a reflection pattern, at least one PRS in the set of PRSs via at least one reception occasion.

Positioning of passive internet of things (IOT) devices

Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may transmit to a network entity a first signal requesting a modification of allocated resources for sidelink transmission, sidelink reception, or both based on multiple transport blocks (TBs) for communication for the UE. The UE may receive, from the network entity, a downlink control information (DCI) signal granting one or more resources to the UE for sidelink communications based on the first signal. In some cases, the DCI signal may dynamically or periodically grant one or more resources for sidelink transmission, one or more resources for sidelink reception, or both for the UE. The UE may use the granted resources to communicate multiple TBs with one or more other UEs based on the DCI signal. For example, a single DCI message may allocate resources for sidelink communication of multiple TBs.

Multiple transport block (TB) grant for sidelink

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, scheduling information scheduling one or more communications. The one or more communications may be scheduled over one or more of a sidelink, an uplink, or a downlink. The scheduling information may provide one or more of a transmission parameter for the one or more communications or a reception parameter for the one or more communications. The UE may communicate the one or more communications based at least in part on the one or more of the transmission parameter or the reception parameter. Numerous other aspects are described.

Unifying sidelink and UU interface downlink control information

Methods, systems, and devices for wireless communications are described. A network entity may transmit one or more control messages including scheduling information for a sidelink transmission and active interference cancellation (AIC) parameters to a transmitting user equipment (UE), a receiving UE, or both. The transmitting UE may relay the AIC parameters to the receiving UE. The transmitting UE may perform the sidelink transmission to a receiving UE. The transmitting UE may perform sidelink AIC on the sidelink transmission according to the AIC parameters. The receiving UE may decode the sidelink transmission by modifying interference at a receiver of the UE.

Active interference cancellation for sidelink transmissions

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a backscattering radio may transmit capability information relating to at least one of a polarization conversion capability of the backscattering radio or a backscattering modulation capability of the backscattering radio. The backscattering radio may communicate with a network node in accordance with the capability information. Numerous other aspects are described.

Techniques for polarization conversion for a backscattering radio

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a controller user equipment (UE) may transmit, to a network node, a relay scheduling request that indicates a request to schedule access to a universal mobile telecommunications system air interface (Uu) based at least in part on relaying one or more sidelink retransmissions associated with at least a first sidelink between the controller UE and a first sidelink UE. The UE may communicate the one or more sidelink retransmissions between the controller UE and the network node based at least in part on using the Uu. Numerous other aspects are described.

Efficient scheduling of a two-hop communication link

Wireless communications systems and methods related to communicating information are provided. A method of wireless communication performed by a user equipment (UE). The method of wireless communication also includes receiving a configuration from a network for uplink transmission using a first plurality of subcarriers; receiving an instruction from the network for interference cancellation with respect to the first plurality of subcarriers; calculating a plurality of symbols and modulating the plurality of symbols on a second plurality of subcarriers in accordance with the instruction from the network for interference cancellation; and transmitting a waveform to the network, the waveform including the first plurality of subcarriers and the second plurality of subcarriers.

Radio frequency emission reduction with interference cancellation

This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for wireless communication. In one aspect of the disclosure, a method of wireless communication performed by a user equipment (UE) includes receiving, from a base station, a grant message indicating a set of sidelink resources. The method further includes transmitting multiple unicast messages via multiple subgroups of the set of sidelink resources.

Growing community of inventors

Hillsborough, NJ, United States of America

Xiaojie Wang