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公开(公告)号：US11824629B2
公开(公告)日：2023-11-21
申请号：US17739724
申请日：2022-05-09
Applicant: WISIG NETWORKS PRIVATE LIMITED
Inventor： Kiran Kumar Kuchi
IPC: H04J13/00 , H04J11/00 , H04L5/00 , H04L27/26 , H04W72/541
CPC classification number: H04J13/004 , H04J11/0033 , H04L5/0051 , H04L27/265 , H04L27/2626 , H04L27/26526 , H04W72/541 , H04J2011/0013 , H04L5/0048
Abstract: The present disclosure discloses a method and a system for transmitting DFT-s-OFDM symbols. A data sequence for transmitting as an OFDM symbol is received as input from a data source. A reference sequence for transmitting along with the data sequence as the OFDM symbol is generated and time-multiplexed with the data sequence, to generate a multiplexed sequence. Thereafter, a Discrete Fourier Transform (DFT) operation is performed on the multiplexed sequence to generate a DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol that is further processed for transmitting over a channel. The transmission of the reference sequence and the data sequence in a single OFDM symbol provides better bandwidth utilization and flexibility in modulation of the reference sequence and the data sequence.
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公开(公告)号：US20230353200A1
公开(公告)日：2023-11-02
申请号：US18347405
申请日：2023-07-05
Inventor： YUTAKA MURAKAMI
CPC classification number: H04B7/0452 , H04J3/00 , H04B7/0617 , H04B7/086 , H04J11/003 , H04B7/04 , H04J11/00 , H04L27/262 , H04L27/2662 , H04L27/2675 , H04L27/2692 , H04L27/2626 , H04W72/0446
Abstract: A communication apparatus includes a receiver and a decoder. The receiver includes a plurality of antenna elements and, in operation, receives from a base station apparatus a modulated signal mapped to one of a plurality of subframes defined in a frame corresponding to a communicable range to which the communication apparatus belongs. The plurality of subframes are defined by time-division, frequency-division, or time-and-frequency division of the frame. A maximum number of modulated signals that can be simultaneously transmitted in a subframe from the base station apparatus varies depending on the communicable range. The decoder, in operation, decodes the received modulated signal.
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公开(公告)号：US11792061B2
公开(公告)日：2023-10-17
申请号：US17714926
申请日：2022-04-06
Applicant: Regents of the University of Minnesota
Inventor： Georgios B. Giannakis , Xiaoli Ma
IPC: H04L27/26 , H04L25/02 , H04B7/0413 , H04B7/0456 , H04B7/06 , H04J11/00 , H04L5/00
CPC classification number: H04L27/2626 , H04B7/046 , H04B7/0413 , H04B7/063 , H04B7/066 , H04J11/0063 , H04L5/0016 , H04L25/0202 , H04L25/0204 , H04L25/0228 , H04L25/0242 , H04L27/2607 , H04L27/2613 , H04L27/2657 , H04L27/2671 , H04L27/2672 , H04L27/2675 , H04L27/2692 , H04L27/2695 , H04L27/26134
Abstract: Techniques are described for carrier frequency offset (CFO) and channel estimation of orthogonal frequency division multiplexing (OFDM) transmissions over multiple-input multiple-output (MIMO) frequency-selective fading channels. A wireless transmitter forms blocks of symbols by inserting training symbols within two or more blocks of information-bearing symbols. The transmitter applies a hopping code to each of the blocks of symbols to insert a null subcarrier at a different position within each of the blocks of symbols, and a modulator outputs a wireless signal in accordance with the blocks of symbols. A receiver receives the wireless signal and estimates the CFO, and outputs a stream of estimated symbols based on the estimated CFO.
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公开(公告)号：US11778432B2
公开(公告)日：2023-10-03
申请号：US17812112
申请日：2022-07-12
Applicant: ENK Wireless, Inc.
Inventor： Peter D. Karabinis
CPC classification number: H04W4/40 , H04L5/0055 , H04L5/04 , H04L27/2636 , H04W4/44 , H04W8/24 , H04L27/2626
Abstract: Vehicular systems/methods are disclosed that perform operations comprising: specifying a geographic area responsive to a weather condition, a time-of-day and/or an event; detecting at least one motor vehicle that is within the specified geographic area; and communicating with the at least one motor vehicle that is detected; wherein said communicating comprises: wirelessly transmitting information to the at least one motor vehicle and/or wirelessly receiving information from the at least one motor vehicle; and wherein said detecting comprises: identifying a motor vehicle by wirelessly detecting a unique code associated therewith; and/or identifying a plurality of motor vehicles by wirelessly detecting, for each motor vehicle of the plurality of motor vehicles, a respective unique code associated therewith.
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15.发明授权
公开(公告)号：US11729039B2
公开(公告)日：2023-08-15
申请号：US17459274
申请日：2021-08-27
Applicant: Sinclair Broadcast Group, Inc.
Inventor： Michael J. Simon , Mark A. Aitken , Ebenezer K. Kofi , Louis Herbert Libin
CPC classification number: H04L27/2626 , H04W28/06
Abstract: According to some embodiments, a method includes selecting a length for an advanced television system committee (ATSC) 3.0 frame for transmission by a single frequency network (SFN) transmitter and aligning the SFN transmitter with a global positioning system (GPS) epoch. The method further includes storing geographical coordinates of the SFN transmitter and a corresponding SFN transmitter identification (TX ID) in a database. The method also includes encoding the SFN TX ID in a non-coherent symbol of a plurality of positioning navigation timing (PNT) symbols comprising a plurality of coherent symbols and the non-coherent symbol with orthogonal frequency-division multiplexing (OFDM) numerology to support positioning. The method further includes prepending the plurality of PNT symbols to the ATSC 3.0 frame to generate a modified ATSC 3.0 frame and transmitting the modified ATSC 3.0 using a SFN transmitter antenna of the SFN transmitter.
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公开(公告)号：US20230231676A1
公开(公告)日：2023-07-20
申请号：US18190016
申请日：2023-03-24
Applicant: Sun Patent Trust
Inventor： Seigo Nakao , Masayuki Hoshino , Atsushi Sumasu , Katsuhiko Hiramatsu
IPC: H04L5/00 , H04B7/0413 , H04B7/06 , H04L27/26 , H04B7/0417 , H04W74/00 , H04L25/02
CPC classification number: H04L5/0048 , H04B7/0413 , H04B7/0682 , H04L5/0023 , H04L27/2613 , H04L27/2626 , H04B7/0417 , H04W74/002 , H04L25/0226 , H04L25/0228 , H04W88/02
Abstract: Provided is a radio communication device which can separate propagation paths of antenna ports and improve a channel estimation accuracy even when using virtual antennas. The device includes: a mapping unit which maps a data signal after modulation to a virtual antenna and a virtual antenna; a phase inversion unit which inverts the phase of S0 transmitted from an antenna port in synchronization with a phase inversion unit between the odd-number slot and the even-number slot; the phase inversion unit which inverts the phase of R0 transmitted from the antenna port; a phase inversion unit which inverts the phase of S1 transmitted from an antenna port in synchronization with a phase inversion unit; and the phase inversion unit which inverts the phase of R1 transmitted from an antenna port.
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公开(公告)号：US20230216549A1
公开(公告)日：2023-07-06
申请号：US18117143
申请日：2023-03-03
Applicant: SK TELECOM CO., LTD.
Inventor： Min Soo NA , Seung Young BAN , Chang Soon CHOI
IPC: H04B7/0408 , H04L5/00 , H04B7/0413 , H04L27/26
CPC classification number: H04B7/0408 , H04L5/00 , H04B7/0413 , H04L5/0048 , H04L27/2626
Abstract: Disclosed is technology for supporting high-speed and low-latency performance in a 5G environment through implementation of a new reference signal transmission scheme appropriate for the 5G environment, that is, a mobile communication network environment for supporting high-speed and low-latency communication, which will appear afterwards.
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公开(公告)号：US11671291B2
公开(公告)日：2023-06-06
申请号：US17138299
申请日：2020-12-30
Applicant: MICRON TECHNOLOGY, INC.
Inventor： Fa-Long Luo , Jaime Cummins , Tamara Schmitz , Jeremy Chritz
CPC classification number: H04L27/0008 , H04B1/04 , H04B7/0862 , H04L27/2662 , H04B2001/0433 , H04L27/2626
Abstract: Examples described herein include systems and methods which include wireless devices and systems with examples of mixing input data with coefficient data specific to a processing mode selection. For example, a computing system with processing units may mix the input data for a transmission in a radio frequency (RF) wireless domain with the coefficient data to generate output data that is representative of the transmission being processed according to a specific processing mode selection. The input data is mixed with coefficient data at layers of multiplication/accumulation processing units (MAC units). The processing mode selection may be associated with an aspect of a wireless protocol. Examples of systems and methods described herein may facilitate the processing of data for 5G wireless communications in a power-efficient and time-efficient manner.
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19.发明申请
公开(公告)号：US20190253296A1
公开(公告)日：2019-08-15
申请号：US16274122
申请日：2019-02-12
Applicant: QUALCOMM Incorporated
Inventor： Jialing Li Chen , Bin Tian , Lin Yang , Sameer Vermani , Lochan Verma , Youhan Kim , Stephen Jay Shellhammer
CPC classification number: H04L27/2626 , H04L27/2605 , H04L41/0896 , H04W72/0453 , H04W84/12
Abstract: Methods and apparatuses are disclosed for communicating over a wireless communication network. One such apparatus may include a memory and a processor configured to identify a transmission mode for a transmission of a signal; select a tone plan for transmission of the signal within a 320 MHz total channel bandwidth or a 240 MHz total channel bandwidth, where the tone plan includes a 256 point tone plan, 512 point tone plan, 1024 point tone plane, 2048 point tone plan, 4096 point tone plan, and where the tone plan is selected based on the transmission mode; generate the signal according to the tone plan; and transmit the signal over the 320 MHz total channel bandwidth or over the 240 MHz total channel bandwidth. The selected tone plan may include one or more duplicates of an IEEE 802.11ax 80 MHz (HE80) tone plan which may include one or more null space 26 tone resource units.
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公开(公告)号：US20190253099A1
公开(公告)日：2019-08-15
申请号：US16393441
申请日：2019-04-24
Applicant: FUJITSU LIMITED
Inventor： YOSHINORI TANAKA
CPC classification number: H04B1/69 , H04J13/004 , H04L27/26 , H04L27/2626
Abstract: A radio communication apparatus includes: a modulating unit that modulates data to be transmitted by being arranged in a first resource area of a radio signal; a first spreading modulation unit that performs, by using a code, spreading modulation on data to be transmitted by being arranged in a second resource area provided in the first resource area; a mapping unit that maps the data modulated by the modulating unit onto the first resource area and that maps the data subjected to the spreading modulation by the first spreading modulation unit onto the second resource area; and a transmitter that transmits a signal obtained by mapping performed by the mapping unit.
