公开(公告)号：US20240235713A1

公开(公告)日：2024-07-11

申请号：US18497419

申请日：2023-10-30

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 ,  H04L27/2626 ,  H04L27/265 ,  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.

公开(公告)号：US11901935B2

公开(公告)日：2024-02-13

申请号：US17238761

申请日：2021-04-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Konstantinos Manolakis ,  Daniel Medina ,  Mario Hernán Castañeda Garcia ,  Richard Stirling-Gallacher ,  Zhongfeng Li

IPC: H04B1/7143 ,  H04J11/00 ,  H04J13/00 ,  H04B1/69

CPC classification number: H04B1/7143 ,  H04J11/0033 ,  H04J13/0074 ,  H04B2001/6904 ,  H04B2001/6908 ,  H04B2201/71323

Abstract: The present application relates to wireless communications suitable for smart manufacturing and industrial automation. In particular, the application proposes a wireless communication device (UE) and a network device (BS), in particular suitable for cyclic communication. The BS is configured to provide a first information defining a hopping sequence to a UE, and to provide a second information to the UE defining when the hopping sequence should be repeated, in particular periodically repeated. The UE is accordingly configured to receive the first information from the BS, and to receive the second information from the BS. The hopping sequence specifies at least two spatial resources and/or at least two radio resources, which the UE is configured to use for transmissions to and/or from the BS.

公开(公告)号：US20230308161A1

公开(公告)日：2023-09-28

申请号：US18127239

申请日：2023-03-28

Applicant: Sun Patent Trust

Inventor： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC: H04B7/06 ,  H04W52/42 ,  H04B7/0413 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/08 ,  H04L25/03

CPC classification number: H04B7/0697 ,  H04B7/0413 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/046 ,  H04B7/0465 ,  H04B7/0617 ,  H04B7/0682 ,  H04B7/0862 ,  H04L25/0391 ,  H04W52/42 ,  H04J11/0033

Abstract: A transmission method for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. Each signal has been modulated according to a different modulation sheme. The transmission method applies precoding on both signals using a fixed precoding matrix, applies different power change to each signal, and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

公开(公告)号：US11764840B2

公开(公告)日：2023-09-19

申请号：US17481657

申请日：2021-09-22

Applicant: Sun Patent Trust

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04B7/0456 ,  H04B7/0413 ,  H04B7/06 ,  H04J11/00 ,  H04L25/03 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04L1/06 ,  H04L27/34 ,  H04L27/36

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0615 ,  H04J11/0033 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0643 ,  H04L25/03343 ,  H04L25/03891 ,  H04L1/0003 ,  H04L1/0071 ,  H04L5/0007 ,  H04L27/2602 ,  H04L27/2647 ,  H04L27/3444 ,  H04L27/368

Abstract: Disclosed is a transmission scheme for transmitting a first modulated signal and a second modulated signal over the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a baseband signal after a first mapping and a baseband signal after a second mapping by a precoding weight and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.

公开(公告)号：US20190058502A1

公开(公告)日：2019-02-21

申请号：US15760461

申请日：2016-10-03

Applicant: Alcatel Lucent

Inventor： Paschalis TSIAFLAKIS ,  Carl NUZMAN ,  Jochen MAES

IPC: H04B3/32 ,  H04J11/00

CPC classification number: H04B3/32 ,  H04B3/487 ,  H04J11/0033 ,  H04J11/0046

Abstract: A vectoring controller for configuring a vectoring processor that jointly processes DMT communication signals to be transmitted over, or received from, a plurality of N subscriber lines according to a vectoring matrix. In accordance with an embodiment, the vectoring controller is configured, for given ones of a plurality of tones, to enable the given tone for direct data communication over a first set of N−Mk targeted lines out of the plurality of N subscriber lines, and to disable the given tone for direct data communication over a second disjoint set of Mk supporting lines out of the plurality of N subscriber lines, Mk denoting a non-null positive integer. The vectoring controller is further configured to configure the vectoring matrix to use an available transmit or receive power at the given tone over the second set of Mk supporting lines for further enhancement of data signal gains at the given tone over the first set of N−Mk targeted lines.

公开(公告)号：US09979516B2

公开(公告)日：2018-05-22

申请号：US14655749

申请日：2013-12-26

Applicant: Sharp Kabushiki Kaisha ,  Waseda University

Inventor： Takashi Onodera ,  Hiromichi Tomeba ,  Minoru Kubota ,  Fumiaki Maehara ,  Fumio Takahata

IPC: H04L5/26 ,  H04L5/00 ,  H04B7/0456 ,  H04J11/00 ,  H04B7/06 ,  H04L1/18 ,  H04W16/28 ,  H04B7/0452 ,  H04L25/03

CPC classification number: H04L5/0026 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0697 ,  H04J11/0033 ,  H04L1/1812 ,  H04L1/1893 ,  H04L25/03898 ,  H04W16/28

Abstract: It is intended to provide a transmission device, a reception device and a communication system capable of improving transmission characteristics by performing packet combining by HARQ in MU-MIMO transmission using non-linear precoding.In a case of receiving NAK from any of terminal devices (400), a base station device (100) retransmits a packet, in which an error occurs, addressed to this terminal device. The base station device (100) transmits the data to be retransmitted together with other transmission data addressed to a different terminal device or addressed to the own terminal device by spatial multiplexing transmission with MU-MIMO. At this time, for the retransmission data, precoding is performed such that a perturbation term same as a perturbation term which has been added to this data by non-linear precoding at the time of initial transmission is added.

公开(公告)号：US09866306B2

公开(公告)日：2018-01-09

申请号：US15452970

申请日：2017-03-08

Applicant: Sun Patent Trust

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04K1/10 ,  H04L27/28 ,  H04B7/06 ,  H04B7/0456 ,  H04B7/04

CPC classification number: H04B7/0697 ,  H04B7/0413 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/046 ,  H04B7/0465 ,  H04B7/0617 ,  H04B7/0682 ,  H04B7/0862 ,  H04J11/0033 ,  H04L25/0391 ,  H04W52/42

Abstract: A transmission method for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. Each signal has been modulated according to a different modulation scheme. The transmission method applies precoding on both signals using a fixed precoding matrix, applies different power change to each signal, and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

公开(公告)号：US20170187558A1

公开(公告)日：2017-06-29

申请号：US15308783

申请日：2015-04-07

Applicant: NTT DOCOMO, INC.

Inventor： Shimpei Yasukawa ,  Hiroki Harada ,  Yongbo Zeng ,  Qun Zhao ,  Yongsheng Zhang

IPC: H04L27/26 ,  H04W92/18 ,  H04B1/10 ,  H04W72/12 ,  H04J11/00 ,  H04W72/08

CPC classification number: H04L27/2607 ,  H04B1/10 ,  H04J11/0033 ,  H04J11/005 ,  H04J2211/005 ,  H04L5/0032 ,  H04L5/0073 ,  H04L27/2666 ,  H04L27/2675 ,  H04L27/2678 ,  H04W72/082 ,  H04W72/12 ,  H04W76/14 ,  H04W92/18

Abstract: A user apparatus is provided. The user apparatus includes a cyclic prefix length detection unit configured to detect a cyclic prefix length used by a user apparatus of a neighbor cell or out of coverage; and an interference detection unit configured to detect interference caused by a cyclic prefix length difference, a synchronization timing difference, or collision of resources used for signal transmission. Further, a base station is provided. The base station includes a reception unit configured to receive from a user apparatus an interference result caused by a cyclic prefix length difference; a resource allocation unit configured to set resources based on the received interference result; and a transmission unit configured to transmit the set resource information to the user apparatus.

公开(公告)号：US20170187444A1

公开(公告)日：2017-06-29

申请号：US15452970

申请日：2017-03-08

Applicant: Sun Patent Trust

Inventor： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC: H04B7/06 ,  H04B7/04 ,  H04B7/0456

CPC classification number: H04B7/0697 ,  H04B7/0413 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/046 ,  H04B7/0465 ,  H04B7/0617 ,  H04B7/0682 ,  H04B7/0862 ,  H04J11/0033 ,  H04L25/0391 ,  H04W52/42

Abstract: A transmission method for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. Each signal has been modulated according to a different modulation scheme. The transmission method applies precoding on both signals using a fixed precoding matrix, applies different power change to each signal, and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

公开(公告)号：US09603141B2

公开(公告)日：2017-03-21

申请号：US14679913

申请日：2015-04-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Runhua Chen ,  Eko N. Onggosanusi ,  Vikram Chandrasekhar ,  Anthony Edet Ekpenyong

IPC: H04W4/00 ,  H04W72/04 ,  H04J11/00 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04J11/0033 ,  H04L1/1812 ,  H04L5/0023 ,  H04L5/0053 ,  H04L27/2601 ,  H04W72/14 ,  H04W88/02

Abstract: A wireless transmission system included at least one user equipment and a base station. The base station is operable to form a downlink control information block, modulate the downlink control information, precode the modulated downlink control information, and transmit the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment. The precoded, modulated downlink control information is mapped to a set of N1 physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T1 to and orthogonal frequency division multiplexing symbol T2.