Patents by Inventor Peiying Zhu

Peiying Zhu 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).

  • Systems and Methods for Determining Air Interface Configuration
    Publication number: 20180184413
    Abstract: Systems and methods are provided for configuring an air interface between a UE and an access point for one or more radio access network slices or services. The access point may transmit an indication of an option for each of a plurality of air interface building blocks to use for each service/slice. Methods are provided to address a situation where there are multiple options.
    Type: Application
    Filed: February 15, 2018
    Publication date: June 28, 2018
    Inventors: Lu Rong, Jianglei Ma, Peiying Zhu, Wen Tong, Kelvin Kar Kin Au
  • System and method for generalized multi-carrier frequency division multiplexing
    Patent number: 10009209
    Abstract: A method for operating a device includes determining adaptation criteria for a waveform to be transmitted by a transmitting device over a communications channel towards a receiving device, and adjusting a generalized multi-carrier multiplexing parameter (GMMP) of the waveform in accordance with the adaptation criteria. The method also includes transmitting an indicator of the adjusted GMMP to at least one of the transmitting device and the receiving device.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: June 26, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Peiying Zhu, Jianglei Ma, Ming Jia, Wen Tong
  • Systems and Methods for Determining Air Interface Configuration
    Publication number: 20180176900
    Abstract: A method and system of allocating resources in a Radio Access Network that includes associating each of a plurality of services with a slice that is allocated a unique set of network resources and transmitting information in the Radio Access Network for at least one of the services using the slice associated with the at least one service.
    Type: Application
    Filed: February 15, 2018
    Publication date: June 21, 2018
    Inventors: Lu Rong, Jianglei Ma, Peiying Zhu, Wen Tong, Kelvin Kar Kin Au
  • MULTI-USER MIMO SYSTEMS AND METHODS
    Publication number: 20180167952
    Abstract: A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.
    Type: Application
    Filed: January 26, 2018
    Publication date: June 14, 2018
    Inventors: Wen Tong, Ming Jia, Jianming Wu, Dong-Sheng Yu, Peiying Zhu
  • Pilot Symbol Patterns for Transmission Through a Plurality of Antennas
    Publication number: 20180167247
    Abstract: A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency).
    Type: Application
    Filed: February 8, 2018
    Publication date: June 14, 2018
    Inventors: Jianglei Ma, Ming Jia, Wen Tong, Peiying Zhu, Hang Zhang, Hua Xu, Dongsheng Yu
  • Methods and systems for scheduling a virtual MIMO communication environment
    Patent number: 9992792
    Abstract: A system and method for scheduling cooperative uplink transmissions in a virtual multiple input multiple output (MIMO) wireless communication environment are provided. More specifically, both random and channel aware orthogonal scheduling techniques for identifying a sub-set of N mobile terminals to provide cooperative uplink transmissions for each transmit time interval are provided.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: June 5, 2018
    Assignee: BlackBerry Limited
    Inventors: Jianming Wu, Ming Jia, Wen Tong, Peiying Zhu
  • Preambles in OFDMA System
    Publication number: 20180152331
    Abstract: The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs fine synchronization using the common sequence on the common preamble, and the resulting peaks will provide the locations of candidate base stations. The base station specific search is then performed in the vicinities of those peaks by using base station specific pseudo-noise sequences. With this two stage cell search, the searching window is drastically reduced. The preamble is matched to known values by a respective receiver to decode the signals and permit multiple signals to be transferred from the transmitter to the receiver. The preamble may comprise two parts, Preamble-I and Preamble-2, which may be used in different systems, including multioutput, multi-input (MIMO) systems.
    Type: Application
    Filed: November 27, 2017
    Publication date: May 31, 2018
    Inventors: Jianglei Ma, Hang Zhang, Wen Tong, Ming Jia, Peiying Zhu, Mo-Han Fong
  • Wireless Feedback System and Method
    Publication number: 20180145731
    Abstract: A codebook C is provided in a MIMO transmitter as well as a MIMO receiver. The codebook C will include M codewords ci, where i is a unique codeword index for each codeword ci. Each codeword defines weighting factors to apply to the MIMO signals, and may correspond to channel matrices or vectors to apply to the MIMO signals prior to transmission from the respective antennas of the MIMO transmitter. The present invention creates codeword subsets Si for each codeword ci of the codebook C. Each codeword subset Si defines L codewords cj, which are selected from all the codewords ci in the codebook C. The codewords cj in a codeword subset Si are the L codewords in the entire codebook that best correlate with the corresponding codeword ci.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 24, 2018
    Inventors: Wen Tong, Hosein Nikopour, Amir Khandani, Hua Xu, Ming Jia, Peiying Zhu, Dong-sheng Yu
  • OFDM System with Reverse Link Interference Estimation
    Publication number: 20180138994
    Abstract: A new method of performing interference estimation to allow the data packets to be efficiently delivered in an OFDM system. The interference estimation is performed on average over each frame for each mobile station individually in both frequency and time domains. Based on the estimated interference, the CIR can be determined by the BTS based on channel response estimates made by the BTS, or by the MS based on channel response estimates made for the uplink assuming a symmetrical channel. Numerical results show that the CIR estimation error could be very small if a sub-channel is considered as the minimum transmission unit. In terms of the aggregate throughput, the interference estimation method can provide a significant gain.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Inventors: Jianming WU, Wen TONG, Peiying ZHU
  • Method and system for combining DFT-transformed OFDM and non-transformed OFDM
    Patent number: 9973365
    Abstract: Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: May 15, 2018
    Assignee: Apple Inc.
    Inventors: Jianglei Ma, Wen Tong, Ming Jia, Hua Xu, Peiying Zhu, Hang Zhang
  • Preambles in OFDMA system
    Patent number: 9954715
    Abstract: The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs fine synchronization using the common sequence on the common preamble, and the resulting peaks will provide the locations of candidate base stations. The base station specific search is then performed in the vicinities of those peaks by using base station specific pseudo-noise sequences. With this two stage cell search, the searching window is drastically reduced. The preamble is matched to known values by a respective receiver to decode the signals and permit multiple signals to be transferred from the transmitter to the receiver. The preamble may comprise two parts, Preamble-I and Preamble-2, which may be used in different systems, including multioutput, multi-input (MIMO) systems.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: April 24, 2018
    Assignee: APPLE INC.
    Inventors: Jianglei Ma, Hang Zhang, Wen Tong, Ming Jia, Peiying Zhu, Mo-Han Fong
  • Communication Resource Allocation Systems and Methods
    Publication number: 20180092098
    Abstract: A channel descriptor management message is transmitted on a broadcast connection to a mobile terminal. The channel descriptor management message provides a format for a frame. The frame includes a resource space. The channel descriptor management message defines a plurality of channels within the resource space and allocates at least one of the channels to a plurality of users. Subsequent resource allocation messages may refer to a location within a channel rather than a location within the entire resource space.
    Type: Application
    Filed: November 27, 2017
    Publication date: March 29, 2018
    Inventors: Hang ZHANG, Mo-Han Fong, Peiying Zhu, Wen Tong, Jianglei Ma
  • Pilot symbol patterns for transmission via a plurality of antennas
    Patent number: 9929889
    Abstract: A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency).
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: March 27, 2018
    Assignee: Apple Inc.
    Inventors: Jianglei Ma, Ming Jia, Wen Tong, Peiying Zhu, Hang Zhang, Hua Xu, Dongsheng Yu
  • System and Method for Semi-Orthogonal Multiple Access
    Publication number: 20180083760
    Abstract: A method for operating a transmitting device using semi-orthogonal multiple access (SOMA) includes determining power allocations and sub-quadrature amplitude modulation (sub-QAM) allocations for a first receiving device and a second receiving device in accordance with channel information associated with the first receiving device and the second receiving device, and transmitting information about a first power allocation for the first receiving device, and a first sub-QAM allocation for the first receiving device to the first receiving device.
    Type: Application
    Filed: November 29, 2017
    Publication date: March 22, 2018
    Inventors: Ming Jia, Jianglei Ma, Peiying Zhu, Hao Hu
  • Communication channel optimization systems and methods in multi-user communication systems
    Patent number: 9923617
    Abstract: Systems and methods of optimizing communication channels in multi-user communication systems are provided. Coding weights are determined based on communication channel state information for communication channels between a transmitter and multiple receivers. The coding weights are applied to communication signals to be transmitted from the transmitter to the receivers. Each receiver decodes received signals using inverses of the coding weights. Embodiments of the invention support multi-user MIMO (Multiple Input Multiple Output) where each receiver has fewer antennas than the transmitter, and enhance system performance if the total number of antennas at all of the receivers exceeds the number of antennas at the transmitter.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: March 20, 2018
    Assignee: Apple Inc.
    Inventors: Wen Tong, Ming Jia, Peiying Zhu, Alexandre M. Chloma, Mikhail G. Bakouline, Vitali B. Kreindeline
  • Multi-user MIMO systems and methods
    Patent number: 9918328
    Abstract: A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: March 13, 2018
    Assignee: BlackBerry Limited
    Inventors: Wen Tong, Ming Jia, Jianming Wu, Dong-Sheng Yu, Peiying Zhu
  • System and Method for Mapping Symbols for MIMO Transmission
    Publication number: 20180069614
    Abstract: Methods and devices are provided for MIMO OFDM transmitter and receivers having odd and/even numbers of transmit antennas. Various methods for pre-coding information bits before space time coding (STC) are described for enabling transmission of information bits over all antennas. Methods of decoding received signals that have been pre-coded and STC coded are also provided by embodiments of the invention. Pilot patterns for downlink and uplink transmission between a base station and one or more wireless terminals for three transmit antenna transmitters are also provided.
    Type: Application
    Filed: October 30, 2017
    Publication date: March 8, 2018
    Inventors: Mahmoud Taherzadehboroujeni, Hosein Nikopour, Amir Khandani, Wen Tong, Ming Jia, Peiying Zhu, Dong-Sheng Yu, Jianglei Ma
  • Methods and Systems for Orthogonal Frequency Division Multiplexing (OFDM) Multiple Zone Partitioning
    Publication number: 20180069676
    Abstract: Aspects of the invention include methods and devices for inserting data and pilot symbols into Orthogonal Frequency Division Multiplexing (OFDM) frames having a time domain and a frequency domain. A method involves inserting in at least one zone of a first type a two dimensional array of data and pilot symbols in time and frequency and inserting in at least one zone of a second type a two dimensional array of data and pilot symbols in time and frequency. In some implementations the zone of the first type comprises common pilot symbols that can be detected by all receivers receiving the OFDM frame. In some implementations the zone of the second type comprises dedicated pilot symbols that are only detectable by a receiver that is aware of pre-processing used to encode the dedicated pilot symbols.
    Type: Application
    Filed: November 8, 2017
    Publication date: March 8, 2018
    Inventors: Jianglei Ma, Ming Jia, Wen Tong, Peiying Zhu, Hang Zhang, Mo-Han Fong
  • Adaptive Transmission Systems and Methods
    Publication number: 20180069615
    Abstract: Spatial multiplexing and transmit diversity can improve the capacity of a wireless communication system. The system and method adapts communication schemes for communication systems with multiple antennas utilizing at least two transmission modes. The at least two transmission modes can, but are not necessarily, used for uplink communications. The two transmission modes may be chosen from the group consisting of a single antenna mode, a diversity mode a spatial multiplexed mode and a mixed diversity and spatial multiplexed mode. The at least two transmission modes may involve adaptation among multiple transmitters. At least one receiver may indicate a transmission mode to be used by a transmitter for a subsequent transmission. A transmitter may determine a transmission mode to be used for a subsequent transmission. The transmission mode can be based on channel sounding.
    Type: Application
    Filed: October 27, 2017
    Publication date: March 8, 2018
    Inventors: Jianglei Ma, Ming Jia, Jianming Wu, Peiying Zhu, Wen Tong, Evelyne Le Strat, Sarah Boumendil, Moussa Abdi
  • Method and System for Combining DFT-Transformed OFDM and Non-Transformed OFDM
    Publication number: 20180062894
    Abstract: Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.
    Type: Application
    Filed: October 23, 2017
    Publication date: March 1, 2018
    Inventors: Jianglei Ma, Wen Tong, Ming Jia, Hua Xu, Peiying Zhu, Hang Zhang