知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

29 records (took 0.017 seconds)

    Transmission resource allocation by splitting physical resource blocks
    1.
    发明授权
    Transmission resource allocation by splitting physical resource blocks 有权

    公开(公告)号：US11632791B2

    公开(公告)日：2023-04-18

    申请号：US17661539

    申请日：2022-04-29

    Applicant: Cohere Technologies, Inc.

    Inventor： Yoav Hebron ,  Christian Ibars Casas ,  Ronny Hadani ,  Shachar Kons

    IPC: H04L5/00 ,  H04W72/53 ,  H04W72/0446 ,  H04W72/0453

    Abstract: Methods, systems and devices for providing transmission resources that achieve transmission diversity while reducing pilot signal overhead are described. An exemplary wireless communication method may be implemented in a wireless communication system in which transmission resources are allocated on a per physical resource block (PRB) basis, where a PRB corresponds to a two dimensional resource pattern comprising a first number of subcarriers along a frequency dimension and a second number time slots along a time dimension. The method includes logically dividing subcarriers in each PRB into an integer number of sub-groups of sub-carriers, wherein the integer number is greater than one, allocating, to a transmission, transmission resources corresponding to one or more of the sub-groups of subcarriers, performing the transmission in the wireless communication system.

    Multi-user multiplexing of orthogonal time frequency space signals
    4.
    发明授权
    Multi-user multiplexing of orthogonal time frequency space signals 有权

    公开(公告)号：US10917204B2

    公开(公告)日：2021-02-09

    申请号：US16273482

    申请日：2019-02-12

    Applicant: Cohere Technologies, Inc.

    Inventor： Shachar Kons ,  Ronny Hadani ,  Yoav Hebron

    IPC: H04L5/00 ,  H04L23/02 ,  H04W72/04 ,  H04J4/00 ,  H04W72/12 ,  G01S7/41

    Abstract: A method for performing downlink transmissions from a transmitting device to multiple user devices using transmission resources from a multi-dimensional grid of resources is described. The method includes logically partitioning the transmission resources into multiple segments, assigning, to a given user device of the multiple user devices, transmission resources of one or more of the multiple segments, and performing, using at least some of the assigned transmission resources for the given user device, a downlink transmission using an orthogonal time frequency space (OTFS) transformation on data or signals to be transmitted to the given user device.

    ORTHOGONAL TIME FREQUENCY SPACE MODULATION TECHNIQUES
    7.
    发明公开
    ORTHOGONAL TIME FREQUENCY SPACE MODULATION TECHNIQUES 审中-公开

    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.

    MULTI-USER MULTIPLEXING OF ORTHOGONAL TIME FREQUENCY SPACE SIGNALS
    10.
    发明申请
    MULTI-USER MULTIPLEXING OF ORTHOGONAL TIME FREQUENCY SPACE SIGNALS 审中-公开

    公开(公告)号：US20190173630A1

    公开(公告)日：2019-06-06

    申请号：US16273482

    申请日：2019-02-12

    Applicant: Cohere Technologies, Inc.

    Inventor： Shachar Kons ,  Ronny Hadani ,  Yoav Hebron

    IPC: H04L5/00 ,  H04J4/00 ,  H04W72/12

    Abstract: A method for performing downlink transmissions from a transmitting device to multiple user devices using transmission resources from a multi-dimensional grid of resources is described. The method includes logically partitioning the transmission resources into multiple segments, assigning, to a given user device of the multiple user devices, transmission resources of one or more of the multiple segments, and performing, using at least some of the assigned transmission resources for the given user device, a downlink transmission using an orthogonal time frequency space (OTFS) transformation on data or signals to be transmitted to the given user device.

Patent Agency Ranking