Patents by Inventor Ameha Tsegaye ABEBE

Ameha Tsegaye ABEBE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10567033
    Abstract: Disclosed are a method and an apparatus for detecting real-time random access and multi-user using multiple sequence spreading. The method for detecting real-time random access and multi-user using multiple sequence spreading may include steps of selecting, by user equipment, one spreading sequence set from a plurality of spreading sequence sets randomly without a separate resource allocation and/or spreading sequence allocation, applying, by the user equipment, each of the plurality of spreading sequences included in the one spreading sequence set to each of the plurality of symbols included in a group, and transmitting, by the user equipment, each of the plurality of symbols spread based on each of the plurality of spreading sequences.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: February 18, 2020
    Assignee: Korea University Research and Business Foundation
    Inventors: Chung Gu Kang, Ameha Tsegaye Abebe
  • Patent number: 10469293
    Abstract: Provided are FTN-based OFDM transmission apparatus and method for efficient coexistence of broadband and sporadic traffics which may share radio resources with a Nyquist rate or more of efficiency by inserting the sporadic traffic into resources allocated to the broadband traffic in uplink transmission of a mobile communication system and use the band multiplexing even to a multi input multi output (MIMO) transmission apparatus. According to the present invention, it is possible to reduce quality deterioration according to actual offloading of subcarriers by removing some frequency components to remove a frequency domain allocated with some subcarriers among frequency components of the broadband traffic to selectively offload subcarriers having low contribution rate for the actual broadband transmission and to use the sporadic traffic in a grant-free access scheme by using bands used for the offloaded subcarriers in the sporadic traffic transmission.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: November 5, 2019
    Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Chung Gu Kang, Ameha Tsegaye Abebe
  • Publication number: 20190253923
    Abstract: Disclosed are an apparatus and a method for simultaneously multiplexing and transmitting a broadband traffic and a machine-to-machine traffic or an ultra-reliable low latency communication traffic using the same resource. That is, according to the present invention, it is possible to enhance efficiency of resources when an eMBB traffic and an mMTC traffic or an uRLLC traffic are multiplexed, by spreading and transmitting intermittent data generated in an MTC terminal with superimposition on a subcarrier resource allocated to an eMBB terminal without reservation on a time axis while sharing a high-speed data resource in an OFDMA system and transmitting an uRLCC terminal requiring a short transmission latency time with superimposition on one symbol on a frequency axis.
    Type: Application
    Filed: April 12, 2017
    Publication date: August 15, 2019
    Inventors: Chung Gu KANG, Ameha Tsegaye ABEBE
  • Publication number: 20190215197
    Abstract: Provided are FTN-based OFDM transmission apparatus and method for efficient coexistence of broadband and sporadic traffics which may share radio resources with a Nyquist rate or more of efficiency by inserting the sporadic traffic into resources allocated to the broadband traffic in uplink transmission of a mobile communication system and use the band multiplexing even to a multi input multi output (MIMO) transmission apparatus. According to the present invention, it is possible to reduce quality deterioration according to actual offloading of subcarriers by removing some frequency components to remove a frequency domain allocated with some subcarriers among frequency components of the broadband traffic to selectively offload subcarriers having low contribution rate for the actual broadband transmission and to use the sporadic traffic in a grant-free access scheme by using bands used for the offloaded subcarriers in the sporadic traffic transmission.
    Type: Application
    Filed: December 3, 2018
    Publication date: July 11, 2019
    Inventors: Chung Gu KANG, Ameha Tsegaye ABEBE
  • Publication number: 20180351600
    Abstract: Disclosed are a method and an apparatus for detecting real-time random access and multi-user using multiple sequence spreading. The method for detecting real-time random access and multi-user using multiple sequence spreading may include steps of selecting, by user equipment, one spreading sequence set from a plurality of spreading sequence sets randomly without a separate resource allocation and/or spreading sequence allocation, applying, by the user equipment, each of the plurality of spreading sequences included in the one spreading sequence set to each of the plurality of symbols included in a group, and transmitting, by the user equipment, each of the plurality of symbols spread based on each of the plurality of spreading sequences.
    Type: Application
    Filed: January 13, 2016
    Publication date: December 6, 2018
    Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Chung Gu KANG, Ameha Tsegaye ABEBE