Patents by Inventor Liangping Ma

Liangping Ma 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: 10932152
    Abstract: Systems, methods, and instrumentalities are disclosed to perform rate adaptation in a wireless transmit/receive unit (WTRU). The WTRU may receive an encoded data stream, which may be encoded according to a Dynamic Adaptive HTTP Streaming (DASH) standard. The WTRU may request and/or receive the data stream from a content server. The WTRU may monitor and/or receive a cross-layer parameter, such as a physical layer parameter, a RRC layer parameter, and/or a MAC layer parameter (e.g., a CQI, a PRB allocation, a MRM, or the like). The WTRU may perform rate adaption based on the cross-layer parameter. For example, the WTRU may set the CE bit of an Explicit Congestion Notification (ECN) field based on the cross-layer parameter. The WTRU may determine to request the data stream encoded at a different rate based on the cross-layer parameter, the CE bit, and/or a prediction based on the cross-layer parameter.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: February 23, 2021
    Assignee: VID SCALE, Inc.
    Inventors: Anantharaman Balasubramanian, Gregory S. Sternberg, Liangping Ma, Samian Kaur, Yuriy Reznik, Avi Rapaport, Weimin Liu, Eduardo Asbun
  • Publication number: 20210006302
    Abstract: Methods, apparatus and systems are disclosed. One representative method implemented by a wireless transmit/receive unit includes determining a first beamforming matrix; sending, to a network entity, an indication of the first beamforming matrix; and receiving, from the network entity, an indication of a second beamforming matrix determined by the network entity from at least the first beamforming matrix for beamforming data for transmission.
    Type: Application
    Filed: September 16, 2020
    Publication date: January 7, 2021
    Inventors: Shahrokh Nayeb Nazar, Afshin Haghighat, Liangping Ma, Erdem Bala, Oghenekome Oteri, Moon-il Lee, Sanjeewa Herath
  • Patent number: 10826573
    Abstract: Methods, apparatus and systems are disclosed. One representative method implemented by a wireless transmit/receive unit includes determining a first beamforming matrix; sending, to a network entity, an indication of the first beamforming matrix; and receiving, from the network entity, an indication of a second beamforming matrix determined by the network entity from at least the first beamforming matrix for beamforming data for transmission.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: November 3, 2020
    Assignee: IDAC HOLDINGS, INC.
    Inventors: Shahrokh Nayeb Nazar, Afshin Haghighat, Liangping Ma, Erdem Bala, Oghenekome Oteri, Moon-il Lee, Sanjeewa Herath
  • Patent number: 10764906
    Abstract: Described herein is a silent period method and apparatus for dynamic spectrum management. The methods include configuration and coordination of silent periods across an aggregated channel in a wireless communication system. A silent period management entity (SPME) dynamically determines silent period schedules for channels based on system and device information and assigns a silent period duration and periodicity for each silent period. The SPME may reconfigure the silent period schedule based on system delay, system throughput, channel quality or channel management events. A silent period interpretation entity (SPIE) receives and implements the silent period schedule. The silent periods for the channels may be synchronized, independent, or set-synchronized.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: September 1, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Martino M. Freda, Liangping Ma, Saad Ahmad, Jean-Louis Gauvreau, Alpaslan Demir, Chunxuan Ye
  • Patent number: 10608858
    Abstract: Methods and systems for operation in a wireless network are provided, the methods including receiving modulated data symbols and zeros in a frequency-domain, and mapping in the frequency-domain the modulated data symbols and zeros in an interleaved manner to sub-carriers within a resource allocation. The methods and systems further include generating a time-domain data signal based on the mapped sub-carriers, and generating a time domain cancellation signal by sign inverting and repeating a predetermined number of time-domain samples at a tail portion of the data signal. The methods and systems further include combining the time-domain data signal and the time domain cancellation signal to generate an exact zero tail data signal such that the exact zero tail data signal has a zero tail length equal to the predetermined number of time-domain samples, and transmitting the exact zero tail data signal.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: March 31, 2020
    Assignee: IDAC Holdings, Inc.
    Inventors: Erdem Bala, Mihaela C. Beluri, Kyle Jung-Lin Pan, Tao Deng, Liangping Ma, Yugeswar Deenoo, Ravikumar V. Pragada, Alphan Sahin
  • Publication number: 20200053005
    Abstract: Systems, methods, and instrumentalities are disclosed for enhancing performance of multi-path communications. Multi-path communication performance may be enhanced by determining whether multipath communications share a congested router. A multi-path real-time communication protocol may provide techniques to prevent, detect, communicate and respond to a shared congested router. A shared congested router may be prevented, and/or detected using one or more detection techniques.
    Type: Application
    Filed: October 9, 2019
    Publication date: February 13, 2020
    Applicant: VID SCALE, INC.
    Inventors: Anantharaman Balasubramanian, Liangping Ma, Dirk Trossen
  • Publication number: 20200052864
    Abstract: Interference for reference symbols in URLLC/eMBB multiplexing may be reduced. URLLC and/or eMBB reference signal (RS) interference may be reduced regardless whether the URLLC and eMBB reference signals and data are multiplexed and superimposed using the same numerology or different numerologies and/or regardless whether the URLLC and eMBB reference signals may be aligned or misaligned (e.g., may or may not use a common resource). An URLLC transmission may preempt an eMBB transmission. For the URLLC and eMBB transmissions using a same numerology, a RS reuse indication may be used. The RS reuse indication may indicate whether a RS in the preempted portion of the eMBB transmission may be reused. A channel estimation function set may be estimated, and channel estimation may be performed using the determined channel estimation function set. The eMBB transmission and the URLLC transmission may be decoded based on the performed channel estimation.
    Type: Application
    Filed: February 1, 2018
    Publication date: February 13, 2020
    Applicant: IDAC Holdings, Inc.
    Inventors: Seyed Mohsen Hosseinian, Oghenekome Oteri, Liangping Ma
  • Patent number: 10536312
    Abstract: Systems, methods, and instrumentalities are disclosed for generating, transmitting, and/or receiving a hybrid spread waveform. The hybrid spread waveform may include a data portion and a hybrid guard interval (HGI) portion. The HGI portion may include a fixed prefix portion or a fixed suffix portion, and an adaptive low power tail (LPT) portion. The fixed prefix portion or the fixed suffix portion is a low power cyclic prefix (LPCP). The LPCP may be generated at least based on at least the channel delay spread and a power regrowth length. The adaptive LPT portion may be generated using a zero tail (ZT). The LPT is generated by inserting zeros at IFFT or DFT processing stage. A part of the adaptive LPT portion is used to carry data or control information. A waveform may be switched between a hybrid spread waveform and a fixed-CP waveform, e.g., via control signaling.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: January 14, 2020
    Assignee: IDAC Holdings, Inc.
    Inventors: Kyle Jung-Lin Pan, Mihaela C. Beluri, Ravikumar V. Pragada, Erdem Bala, Yugeswar Deenoo, Liangping Ma, Tao Deng, Vincent Roy
  • Patent number: 10516605
    Abstract: Systems, methods, and instrumentalities are disclosed for enhancing performance of multi-path communications. Multi-path communication performance may be enhanced by determining whether multi-path communications share a congested router. A multi-path real-time communication protocol may provide techniques to prevent, detect, communicate and respond to a shared congested router. A shared congested router may be prevented, and/or detected using one or more detection techniques.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: December 24, 2019
    Assignee: VID SCALE, INC.
    Inventors: Anantharaman Balasubramanian, Liangping Ma, Dirk Trossen
  • Patent number: 10511991
    Abstract: Systems and methods are provided for adapting communication parameters to a variety of link conditions, traffic types and priorities. For example, WiFi transmission parameters (e.g. retry limit, AIFS, CW size, MCS order and/or CCA threshold) may be adapted to channel congestion levels, channel errors and/or traffic priority levels. Parameter adaptation may be coordinated across layers (e.g. between MAC and PHY layer parameters). Congestion levels may be detected, for example, using a smoothed queue size and/or channel busy time. Traffic may be transmitted using adapted parameters, such as reduced retry limits for a high congestion level and increased retry limits for priority traffic in response to channel error. Feedback may support parameter adaptation. For example, feedback may be provided by a receiver and/or within a sender, such as a sender MAC and/or PHY layer or a parameter adapter providing feedback (e.g. spoofed NACK packet) to a sender application, transport and/or network layer.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: December 17, 2019
    Assignee: VID SCALE, INC.
    Inventors: Liangping Ma, Wei Chen, Gregory S. Sternberg, Yuriy Reznik, Oghenekome Oteri
  • Publication number: 20190327116
    Abstract: Systems and methods are disclosed for combining successive cancellation decoding of polar coding with channel estimation, using a non-elementary mixture of information and redundancy bits for both channel estimation and error correction. For example, select bits of the polar encoder output may be used for an implicit parity check. Reliably-decoded bits may be iteratively incorporated into the set of pilots. The result is a semi-blind approach for channel estimation, which may have applicability to common wireless communication systems, particularly a cellular control channel, or transmissions of short messages on a cellular data channel.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 24, 2019
    Inventors: Nadim Ghaddar, Young-Han Kim, Laurence B. Milstein, Liangping Ma, Byung K. Yi
  • Publication number: 20190327757
    Abstract: A wireless transmit/receive unit (WTRU) may receive a configuration message that includes scheduled resources to communicate a scheduling request (SR) for uplink (UL) transmission during a configured downlink (DL) slot for enhanced mobile broadband (eMBB) communication. The configured downlink slot may have mini-slots to switch communications for UL or DL ultra-reliable low latency communication (URLLC) information. The WTRU may monitor a physical downlink control channel (PDCCH) for an UL grant, in response to a transmitted SR, in DL mini-slots following the transmitted SR.
    Type: Application
    Filed: January 5, 2018
    Publication date: October 24, 2019
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Oghenekome Oteri, Liangping Ma, Seyed Mohsen Hosseinian, Shahrokh Nayeb Nazar, Frank La Sita
  • Publication number: 20190280802
    Abstract: Systems, methods and instrumentalities are disclosed for decoding data. For example, it may be determined, in a current slot, whether data received in a previous slot is decoded successfully. The data received in the previous slot may be included in a Physical Downlink Shared Channel (PDSCH). If the data received in the previous slot is not decoded successfully, preemptive multiplexing information may be detected in a first search space. The data received in the previous slot may be decoded, for example, using detected preemptive multiplexing information. The preemptive multiplexing information may be of a current slot. The preemptive multiplexing information may be comprised in a first DCI. A second search space of the current slot may be searched. For example, the second search space may be searched for a second DCI. The first DCI and the second DCI may be different.
    Type: Application
    Filed: November 2, 2017
    Publication date: September 12, 2019
    Applicant: IDAC Holdings, Inc.
    Inventors: Liangping Ma, Shahrokh Nayeb Nazar, Oghenekome Oteri, Seyed Mohsen Hosseinian, Mahmoud Taherzadeh Boroujeni, Frank La Sita
  • Publication number: 20190274062
    Abstract: Systems and methods are provided for adapting communication parameters to a variety of link conditions, traffic types and priorities. For example, WiFi transmission parameters (e.g. retry limit, AIFS, CW size, MCS order and/or CCA threshold) may be adapted to channel congestion levels, channel errors and/or traffic priority levels. Parameter adaptation may be coordinated across layers (e.g. between MAC and PHY layer parameters). Congestion levels may be detected, for example, using a smoothed queue size and/or channel busy time. Traffic may be transmitted using adapted parameters, such as reduced retry limits for a high congestion level and increased retry limits for priority traffic in response to channel error. Feedback may support parameter adaptation. For example, feedback may be provided by a receiver and/or within a sender, such as a sender MAC and/or PHY layer or a parameter adapter providing feedback (e.g. spoofed NACK packet) to a sender application, transport and/or network layer.
    Type: Application
    Filed: May 17, 2019
    Publication date: September 5, 2019
    Applicant: VID SCALE, INC.
    Inventors: Liangping Ma, Wei Chen, Gregory S. Sternberg, Yuriy Reznik, Oghenekome Oteri
  • Publication number: 20190261209
    Abstract: Systems, methods, and instrumentalities are disclosed to perform rate adaptation in a wireless transmit/receive unit (WTRU). The WTRU may receive an encoded data stream, which may be encoded according to a Dynamic Adaptive HTTP Streaming (DASH) standard. The WTRU may request and/or receive the data stream from a content server. The WTRU may monitor and/or receive a cross-layer parameter, such as a physical layer parameter, a RRC layer parameter, and/or a MAC layer parameter (e.g., a CQI, a PRB allocation, a MRM, or the like). The WTRU may perform rate adaption based on the cross-layer parameter. For example, the WTRU may set the CE bit of an Explicit Congestion Notification (ECN) field based on the cross-layer parameter. The WTRU may determine to request the data stream encoded at a different rate based on the cross-layer parameter, the CE bit, and/or a prediction based on the cross-layer parameter.
    Type: Application
    Filed: May 6, 2019
    Publication date: August 22, 2019
    Applicant: VID SCALE, INC.
    Inventors: Anantharaman Balasubramanian, Gregory S. Sternberg, Liangping Ma, Samian Kaur, Yuriy Reznik, Avi Rapaport, Weimin Liu, Eduardo Asbun
  • Patent number: 10356652
    Abstract: Systems and methods are provided for adapting communication parameters to a variety of link conditions, traffic types and priorities. For example, WiFi transmission parameters (e.g. retry limit, AIFS, CW size, MCS order and/or CCA threshold) may be adapted to channel congestion levels, channel errors and/or traffic priority levels. Parameter adaptation may be coordinated across layers (e.g. between MAC and PHY layer parameters). Congestion levels may be detected, for example, using a smoothed queue size and/or channel busy time. Traffic may be transmitted using adapted parameters, such as reduced retry limits for a high congestion level and increased retry limits for priority traffic in response to channel error. Feedback may support parameter adaptation. For example, feedback may be provided by a receiver and/or within a sender, such as a sender MAC and/or PHY layer or a parameter adapter providing feedback (e.g. spoofed NACK packet) to a sender application, transport and/or network layer.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: July 16, 2019
    Assignee: VID Scale, Inc.
    Inventors: Liangping Ma, Wei Chen, Gregory S. Sternberg, Yuriy Reznik, Oghenekome Oteri
  • Patent number: 10349302
    Abstract: Systems, methods, and instrumentalities are disclosed to perform rate adaptation in a wireless transmit/receive unit (WTRU). The WTRU may receive an encoded data stream, which may be encoded according to a Dynamic Adaptive HTTP Streaming (DASH) standard. The WTRU may request and/or receive the data stream from a content server. The WTRU may monitor and/or receive a cross-layer parameter, such as a physical layer parameter, a RRC layer parameter, and/or a MAC layer parameter (e.g., a CQI, a PRB allocation, a MRM, or the like). The WTRU may perform rate adaption based on the cross-layer parameter. For example, the WTRU may set the CE bit of an Explicit Congestion Notification (ECN) field based on the cross-layer parameter. The WTRU may determine to request the data stream encoded at a different rate based on the cross-layer parameter, the CE bit, and/or a prediction based on the cross-layer parameter.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: July 9, 2019
    Assignee: VID SCALE, INC.
    Inventors: Anantharaman Balasubramanian, Gregory S. Sternberg, Liangping Ma, Samian Kaur, Yuriy Reznik, Avi Rapaport, Weimin Liu, Eduardo Asbun
  • Publication number: 20190199569
    Abstract: Methods and systems for operation in a wireless network are provided, the methods including receiving modulated data symbols and zeros in a frequency-domain, and mapping in the frequency-domain the modulated data symbols and zeros in an interleaved manner to sub-carriers within a resource allocation. The methods and systems further include generating a time-domain data signal based on the mapped sub-carriers, and generating a time domain cancellation signal by sign inverting and repeating a predetermined number of time-domain samples at a tail portion of the data signal. The methods and systems further include combining the time-domain data signal and the time domain cancellation signal to generate an exact zero tail data signal such that the exact zero tail data signal has a zero tail length equal to the predetermined number of time-domain samples, and transmitting the exact zero tail data signal.
    Type: Application
    Filed: March 5, 2019
    Publication date: June 27, 2019
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Erdem Bala, Mihaela C. Beluri, Kyle Jung-Lin Pan, Tao Deng, Liangping Ma, Yugeswar Deenoo, Ravikumar V. Pragada, Alphan Sahin
  • Publication number: 20190190569
    Abstract: Methods, apparatus and systems are disclosed. One representative method implemented by a wireless transmit/receive unit includes determining a first beamforming matrix; sending, to a network entity, an indication of the first beamforming matrix; and receiving, from the network entity, an indication of a second beamforming matrix determined by the network entity from at least the first beamforming matrix for beamforming data for transmission.
    Type: Application
    Filed: August 3, 2017
    Publication date: June 20, 2019
    Inventors: Shahrokh Nayeb Nazar, Afshin Haghighat, Liangping Ma, Erdem Bala, Oghenekome Oteri, Moon-il Lee, Sanjeewa Herath
  • Patent number: 10284407
    Abstract: Methods and systems for operation in a wireless network are provided, the method including receiving modulated data symbols and zeros in a frequency-domain, and mapping in the frequency-domain the modulated data symbols and zeros in an interleaved manner to sub-carriers within a resource allocation. The method further includes generating a time-domain data signal based on the mapped sub-carriers, and generating a time domain cancellation signal by sign inverting and repeating a predetermined number of time-domain samples at a tail portion of the data signal. The method further includes combining the time-domain data signal and the time domain cancellation signal to generate an exact zero tail data signal such that the exact zero tail data signal has a zero tail length equal to the predetermined number of time-domain samples, and transmitting the exact zero tail data signal.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: May 7, 2019
    Assignee: IDAC Holdings, Inc.
    Inventors: Erdem Bala, Mihaela C. Beluri, Kyle Jung-Lin Pan, Tao Deng, Liangping Ma, Yugeswar Deenoo, Ravikumar V. Pragada, Alphan Sahin