公开(公告)号：US20240422045A1

公开(公告)日：2024-12-19

申请号：US18738748

申请日：2024-06-10

Applicant: Cohere Technologies, Inc.

Inventor： Shlomo Selim RAKIB ,  Ronny HADANI

IPC: H04L27/26 ,  H04B7/10 ,  H04L5/00 ,  H04L25/02 ,  H04W24/02 ,  H04W72/54

Abstract: Computerized wireless transmitter/receiver system that automatically uses combinations of various methods, including transmitting data symbols by weighing or modulating a family of time shifted and frequency shifted waveforms bursts, pilot symbol methods, error detection methods, MIMO methods, and other methods, to automatically determine the structure of a data channel, and automatically compensate for signal distortions caused by various structural aspects of the data channel, as well as changes in channel structure. Often the data channel is a two or three dimensional space in which various wireless transmitters, receivers and signal reflectors are moving. The invention's modulation methods detect locations and speeds of various reflectors and other channel impairments. Error detection schemes, variation of modulation methods, and MIMO techniques further detect and compensate for impairments. The invention can automatically optimize its operational parameters, and produce a deterministic non-fading signal in environments in which other methods would likely degrade.

公开(公告)号：US12132597B2

公开(公告)日：2024-10-29

申请号：US18686659

申请日：2022-08-26

Applicant: Cohere Technologies, Inc.

Inventor： Shachar Kons ,  Shlomo Selim Rakib ,  Ronny Hadani

IPC: H04L27/26

CPC classification number: H04L27/2639 ,  H04L27/261

Abstract: Methods, systems and devices for wireless communication are described. One example method includes performing a first mapping in which information bits are mapped to transmission resources in a first portion of a two-dimensional delay-Doppler grid. Herein, the two-dimensional delay-Doppler grid comprises N Doppler elements and M delay elements, where N and M are positive integers. The method further includes performing a second mapping in which a reference signal is mapped to transmission resources in a second portion of the two-dimensional delay-Doppler grid, and generating a transmission waveform from a signal combination of an output of the first mapping and an output of the second mapping. The transmission waveform corresponds to an output of an orthogonal time frequency space (OTFS) waveform of the signal combination, and at least the output of the second mapping undergoes a time domain spreading.

公开(公告)号：US12101145B2

公开(公告)日：2024-09-24

申请号：US18006470

申请日：2021-08-02

Applicant: Cohere Technologies, Inc.

Inventor： Ronny Hadani ,  Shlomo Selim Rakib

IPC: H04B7/0456 ,  H04B7/06

CPC classification number: H04B7/0486 ,  H04B7/063 ,  H04B7/0632

Abstract: Methods, systems and devices for wireless communication, which include localization and auto-calibration, are described. One example method includes receiving, at a wireless device, signal transmissions from one or more network devices, and generating, by processing the signal transmissions, a feedback signal for antenna calibration of the one or more network devices. In some embodiments, the antenna calibration is used for performing device localization and feature map generation that is subsequently used for scheduling transmissions in a wireless network.

公开(公告)号：US20240292276A1

公开(公告)日：2024-08-29

申请号：US18648935

申请日：2024-04-29

Applicant: Cohere Technologies, Inc.

Inventor： Shachar KONS ,  Shlomo Selim Rakib ,  Ronny Hadani

IPC: H04W28/16 ,  H04W16/24 ,  H04W72/044 ,  H04W72/542

CPC classification number: H04W28/16 ,  H04W16/24 ,  H04W72/044 ,  H04W72/542

Abstract: Methods, systems and devices for distributed cooperative operation of wireless cells based on sparse channel representations are described. One example method includes providing, using a server, seamless wireless connectivity in an area in which a plurality of network nodes are organized as clusters, where each network node is configured to provide wireless connectivity via N angular sectors covering a surrounding area, where N is an integer and wherein angular sectors of the plurality of network nodes collectively cover the area; controlling, by the server, network nodes in a cluster to collect channel condition information for the N angular sectors and communicate the channel condition information to the network-side server, and operating the server to use the channel condition information collected from the network nodes in the cluster to control communication for the network nodes in the cluster at a different time or a different frequency or a different spatial direction.

公开(公告)号：US20240267276A1

公开(公告)日：2024-08-08

申请号：US18686659

申请日：2022-08-26

Applicant: Cohere Technologies, Inc.

Inventor： Shachar KONS ,  Shlomo Selim Rakib ,  Ronny HADANI

IPC: H04L27/26

CPC classification number: H04L27/2639 ,  H04L27/261

Abstract: Methods, systems and devices for wireless communication are described. One example method includes performing a first mapping in which information bits are mapped to transmission resources in a first portion of a two-dimensional delay-Doppler grid. Herein, the two-dimensional delay-Doppler grid comprises N Doppler elements and M delay elements, where N and M are positive integers. The method further includes performing a second mapping in which a reference signal is mapped to transmission resources in a second portion of the two-dimensional delay-Doppler grid, and generating a transmission waveform from a signal combination of an output of the first mapping and an output of the second mapping. The transmission waveform corresponds to an output of an orthogonal time frequency space (OTFS) waveform of the signal combination, and at least the output of the second mapping undergoes a time domain spreading.

公开(公告)号：US20240250859A1

公开(公告)日：2024-07-25

申请号：US18615169

申请日：2024-03-25

Applicant: Cohere Technologies, Inc.

Inventor： Ronny HADANI ,  Shlomo Selim RAKIB

IPC: H04L27/26 ,  H04B7/005 ,  H04L5/00 ,  H04L23/02 ,  H04L25/03 ,  H04L27/01 ,  H04L27/10

CPC classification number: H04L27/2639 ,  H04B7/005 ,  H04L5/0005 ,  H04L5/0044 ,  H04L27/01 ,  H04L27/10 ,  H04L27/26532 ,  H04L27/2655 ,  H04L27/2697 ,  H04L5/0016 ,  H04L23/02 ,  H04L25/03834

Abstract: A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an intermediate data frame. A transformed data matrix is provided by permuting elements of the intermediate data frame. A modulated signal is generated in accordance with elements of the transformed data matrix.

公开(公告)号：US20240187298A1

公开(公告)日：2024-06-06

申请号：US18409482

申请日：2024-01-10

Applicant: Cohere Technologies, Inc.

Inventor： Ronny Hadani ,  Shlomo Selim Rakib ,  Anton Monk ,  Michail Tsatsanis ,  Yoav Hebron

IPC: H04L27/32

CPC classification number: H04L27/32

Abstract: Orthogonal Time Frequency Space (OTFS) is a novel modulation scheme with significant benefits for 5G systems. The fundamental theory behind OTFS is presented in this paper as well as its benefits. We start with a mathematical description of the doubly fading delay-Doppler channel and develop a modulation that is tailored to this channel. We model the time varying delay-Doppler channel in the time-frequency domain and derive a new domain (the OTFS domain) where we show that the channel is transformed to a time invariant one and all symbols see the same SNR. We explore aspects of the modulation like delay and Doppler resolution, and address design and implementation issues like multiplexing multiple users and evaluating complexity. Finally we present some performance results where we demonstrate the superiority of OTFS.

公开(公告)号：US11968144B2

公开(公告)日：2024-04-23

申请号：US17805569

申请日：2022-06-06

Applicant: Cohere Technologies, Inc.

Inventor： Yoav Hebron ,  Shlomo Selim Rakib ,  Ronny Hadani ,  Michail Tsatsanis ,  Clayton Ambrose ,  Jim Delfeld ,  Robert Fanfelle

IPC: H04L25/02 ,  H04B7/005 ,  H04B17/309 ,  H04B17/373 ,  H04L5/00 ,  H04L27/01 ,  H04L27/26

CPC classification number: H04L5/0048 ,  H04B7/005 ,  H04B17/309 ,  H04B17/373 ,  H04L5/0007 ,  H04L5/0044 ,  H04L25/0202 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/01 ,  H04L27/2639 ,  H04L27/2647

Abstract: Techniques for performing channel estimation in an orthogonal time, frequency and space (OTFS) communication system include receiving a wireless signal comprising a data signal portion and a pilot signal portion in which the pilot signal portion includes multiple pilot signals multiplexed together in the OTFS domain, performing two-dimensional channel estimation in a time-frequency domain based on a minimum mean square error (MMSE) optimization criterion, and recovering information bits using a channel estimate obtained from the two-dimensional channel estimation.

公开(公告)号：US20240015725A1

公开(公告)日：2024-01-11

申请号：US18004168

申请日：2021-06-15

Applicant: Cohere Technologies, Inc.

Inventor： Shlomo Selim RAKIB ,  Ronny HADANI ,  Shachar KONS

IPC: H04W72/121 ,  H04W72/542 ,  H04L5/14 ,  H04B7/0456

CPC classification number: H04W72/121 ,  H04W72/542 ,  H04L5/14 ,  H04B7/0456

Abstract: Methods, systems, and devices for spectral sharing wireless systems, wherein multiple user devices share time and frequency resources for uplink and/or downlink transmissions, are described. One example wireless communication system includes a network station, and multiple user devices, wherein data transmissions over the same time and frequency resources are shared between multiple user devices, in downlink and/or uplink, using spatial user device separation that is dynamically computed by the network station, and where the network station derives spatial user device separation based on uplink channel measurements.

公开(公告)号：US20230412241A1

公开(公告)日：2023-12-21

申请号：US18257088

申请日：2021-12-21

Applicant: Cohere Technologies, Inc.

Inventor： Shachar KONS

IPC: H04B7/06 ,  H04L27/26 ,  H04B7/0456

CPC classification number: H04B7/0697 ,  H04B7/0456 ,  H04L27/2603

Abstract: Methods, systems and devices for spatial multiplexing of different radio technologies are described. An example method for wireless communication includes configuring abase station of a fifth generation new radio (5G NR) radio technology cell to perform transmissions in a network according to a set of compatibility rules that allow a backward compatible operation of the base station with a 4th generation Long Term Evolution (4G LTE) radio technology, and performing transmissions or receptions in the 5G NR cell according to the configuring such that the backward compatible operation is achieved based on orthogonality in a spatial domain between transmissions or receptions in the 5G NR cell and the 4G LTE radio technology.