公开(公告)号：US12119901B2

公开(公告)日：2024-10-15

申请号：US18162443

申请日：2023-01-31

申请人： QUALCOMM Incorporated

发明人： Jing Sun ,  Raviteja Patchava ,  Xiaoxia Zhang

IPC分类号： H04B7/0456 ,  H04B7/22

CPC分类号： H04B7/0456 ,  H04B7/22

摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network entity may obtain a singular value decomposition (SVD) precoding vector that is based at least in part on backscatter associated with a reference signal transmitted by the network entity. The network entity may apply the SVD precoding vector to an output signal. The network entity may transmit the output signal based at least in part on a set of antennas. Numerous other aspects are described.

公开(公告)号：US20240340128A1

公开(公告)日：2024-10-10

申请号：US18293632

申请日：2022-08-05

申请人： BEAMMWAVE AB

发明人： Bengt Lindoff

IPC分类号： H04L5/00 ,  G01S7/00 ,  H04B7/22

CPC分类号： H04L5/0048 ,  G01S7/003 ,  H04B7/22

摘要： A method of a control unit for a wireless device, the wireless device including a communication transceiver unit and a sensing/localization transceiver unit. The method includes setting up a communication channel with a network node or utilizing an existing communication channel with the network node, obtaining sensing configuration information for sensing and localizing an object in the surroundings of the wireless device from the network node, wherein the sensing configuration information includes information about a sensing physical channel, the sensing physical channel including radio channel resources allocated to transmit and/or receive sensing signals, transmitting and/or receiving sensing signals in the radio channel resources allocated, and sensing and localizing the object based on the transmitted and/or received sensing signals.

公开(公告)号：US20240259056A1

公开(公告)日：2024-08-01

申请号：US18162443

申请日：2023-01-31

申请人： QUALCOMM Incorporated

发明人： Jing SUN ,  Raviteja PATCHAVA ,  Xiaoxia ZHANG

IPC分类号： H04B7/0456 ,  H04B7/22

CPC分类号： H04B7/0456 ,  H04B7/22

摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network entity may obtain a singular value decomposition (SVD) precoding vector that is based at least in part on backscatter associated with a reference signal transmitted by the network entity. The network entity may apply the SVD precoding vector to an output signal. The network entity may transmit the output signal based at least in part on a set of antennas. Numerous other aspects are described.

公开(公告)号：US20240223270A1

公开(公告)日：2024-07-04

申请号：US18090033

申请日：2022-12-28

申请人： Microsoft Technology Licensing, LLC

发明人： Zerina KAPETANOVIC ,  Nissanka B. PRIYANTHA ,  Ranveer CHANDRA

IPC分类号： H04B7/22 ,  H04B1/00 ,  H04B7/06 ,  H04L27/02

CPC分类号： H04B7/22 ,  H04B1/0078 ,  H04B7/0602 ,  H04L27/02

摘要： This document relates to communication by backscattering of satellite signals. One example includes a satellite backscatter transmitter having a first antenna configured to receive a radio frequency satellite signal, a modulator configured to modulate the radio frequency satellite signal to obtain a modulated radio frequency satellite signal, a digital logic circuit configured to selectively control the modulator to encode information according to a communication scheme, and a second antenna configured to passively retransmit the modulated radio frequency satellite signal to a receiver.

公开(公告)号：US20240171268A1

公开(公告)日：2024-05-23

申请号：US18340321

申请日：2023-06-23

申请人： Skywave Networks LLC

发明人： Kevin J. Babich

IPC分类号： H04B7/22 ,  H04B7/02 ,  H04L1/06

CPC分类号： H04B7/22 ,  H04B7/028 ,  H04L1/06 ,  G06Q40/04

摘要： A wireless communication system includes a first wireless communication node for transmitting a data signal that is sent to a second wireless communication node by skywave propagation over at least two different data transmission paths. The first data transmission path includes at least one reflection point where the data signal is reflected by the atmosphere and the second data transmission path includes more reflection points than the first data transmission path. The data signal that travelled along the first data transmission path is decoded before the data signal that travelled along the second data transmission path.

公开(公告)号：US20240106532A1

公开(公告)日：2024-03-28

申请号：US18276293

申请日：2022-02-08

申请人： INTERDIGITAL PATENT HOLDINGS, INC.

发明人： Nagi Mahalingam ,  Ravikumar Pragada ,  Tanbir Haque ,  Hussain Elkotby

IPC分类号： H04B7/22 ,  H04W52/02 ,  H04W72/044 ,  H04W72/543

CPC分类号： H04B7/22 ,  H04W52/0216 ,  H04W72/0473 ,  H04W72/543

摘要： Systems, methods, and devices for wireless transmissions based on backscattering. A backscatter indication message (BID) is received from an access point (AP). An interrogation signal is received. Uplink data is transmitted to the AP based on the BID and the interrogation signal. In some implementations, the interrogation signal is received from the AP. In some implementations, the BID indicates a backscatter duration, and the uplink data is transmitted to the AP for the backscatter duration. In some implementations, the uplink data is transmitted to the AP concurrently with receiving the interrogation signal. In some implementations, energy is harvested from the interrogation signal. In some implementations, the uplink data is transmitted to the AP subsequent to the interrogation signal, based on the energy harvested from the interrogation signal. In some implementations, the interrogation signal includes a compensation signal based on channel conditions and/or based on backscattering from the WTRU.

公开(公告)号：US20230066904A1

公开(公告)日：2023-03-02

申请号：US17659527

申请日：2022-04-18

申请人： Skywave Networks LLC

发明人： Kevin J. Babich

IPC分类号： H04B7/12 ,  H04W24/00 ,  H04W72/02 ,  H04B7/22 ,  H04L1/00

摘要： A communication system transmits data between communication nodes over a data transmission path. The system collects data from at least two different sources to create a fused data stream that is used as the input to a model for determining a frequency at which to transmit the data by skywave propagation. The data is transmitted between the communication nodes at the frequency determined by the model.

公开(公告)号：US20210209434A1

公开(公告)日：2021-07-08

申请号：US17205205

申请日：2021-03-18

申请人： The Trustees of Columbia University in the City of New York

发明人： Vivek Mangal ,  Peter R. Kinget

IPC分类号： G06K19/07 ,  H04B5/00 ,  H01Q1/22 ,  G06K7/10 ,  H04B7/22

摘要： Backscatter tags, comprising: antennas; single pole, multiple throw switches each switch (S) having pole terminal connected to one of the antennas, and each having first throw terminal (TT) connected to first side (FS) of inductor (I) for S, second TT connected to FS of capacitor (C) for S, third TT connected to fixed voltage level (FVL), fourth TT that is floating, wherein second side (SS) of I and SS of C are connected to the FVL; power combiner (PC) having inputs connected to fifth TT of each of two of the switches; power detector (PD) having an input connected to output of PC; analog to digital converter (ADC) having input connected to output of PD; hardware processor coupled to output of the ADC and coupled to control terminal of each of the switches.

公开(公告)号：US10911136B2

公开(公告)日：2021-02-02

申请号：US16203394

申请日：2018-11-28

申请人： Electronics and Telecommunications Research Institute ,  FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人： Byung Jang Jeong ,  Woo Jin Byun ,  Ji-Hoon Yun ,  Jae-Han Lim ,  Wisnu Murti

IPC分类号： H04B7/22 ,  H04B7/0456 ,  H04L1/00 ,  H04B1/00 ,  H04B7/08

摘要： Disclosed are a communication method and communication apparatus using an ambient backscatter communication. A transmission apparatus may include generating a plurality of bitsets by fragmenting data based on a predetermined bitset length, mapping the plurality of bitsets to a plurality of switching patterns based on a data size, and controlling a reflection of a background radio frequency (RF) signal based on a corresponding mapped switching pattern, a total number of the plurality of switching patterns may be determined based on the bitset length, and each of the plurality of switching patterns may have a different length.

公开(公告)号：US20200169318A1

公开(公告)日：2020-05-28

申请号：US16689279

申请日：2019-11-20

申请人： Research & Business Foundation Sungkyunkwan University

发明人： Dong In KIM ,  Sung Hoon KIM

IPC分类号： H04B7/22 ,  H04B7/155 ,  H04B17/309 ,  H02J50/80 ,  H02J50/20

摘要： A system for backscatter-based cooperative communication in a wireless-powered heterogeneous network includes a low-power access point, a hybrid access point, and Internet of Things (IoT) devices. The low-power access point transmits an unmodulated carrier. The hybrid access point is in communication with a primary device using a signal. Internet of Things (IoT) devices harvest energy of the unmodulated carrier and the signal, and each of the IoT devices sequentially transmits information to the hybrid access point through a bistatic backscatter communication-based cooperation mode or non-cooperation mode using the harvested energy.