Patents by Inventor Wen Tong

Wen Tong 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: 10560159
    Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: February 11, 2020
    Assignee: Apple Inc.
    Inventors: Jianglei Ma, Ming Jia, Hua Xu, Wen Tong, Peiying Zhu, Moussa Abdi
  • Patent number: 10554272
    Abstract: Systems and methods for closed loop MIMO (multiple input and multiple output) wireless communication are provided. Various transmit formats including spatial multiplexing and STTD are defined in which vector or matrix weighting is employed using information fed back from receivers. The feedback information may include channel matrix or SVD-based feedback.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: February 4, 2020
    Assignee: Apple Inc.
    Inventors: Wen Tong, Ming Jia, Jianglei Ma, Peiying Zhu, Hua Xu, Dong-Sheng Yu, Hang Zhang, Mo-Han Fong
  • Patent number: 10554464
    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: February 12, 2019
    Date of Patent: February 4, 2020
    Assignee: Apple Inc.
    Inventors: Jianglei Ma, Wen Tong, Ming Jia, Hua Xu, Peiying Zhu, Hang Zhang
  • Publication number: 20200037300
    Abstract: A method and system for allocating shareable wireless transmission resources. A resource pool is established. The resource pool is divided into a plurality of physical layer allocation units usable for wirelessly transmitting control information and traffic data. The allocation units are assigned at the media access control layer for the wireless transmission of the control information and traffic data. The system and method of the present invention also allows mobile stations to be dynamically grouped into multicast groupings to reduce system overhead resource requirements.
    Type: Application
    Filed: October 4, 2019
    Publication date: January 30, 2020
    Inventors: Hang Zhang, Jianglei Ma, Ming Jia, Mo-Han Fong, Peiying Zhu, Wen Tong
  • Patent number: 10547480
    Abstract: For a wireless communications system, scalable orthogonal frequency division multiplexing (OFDM) numerology is incorporated in a manner that can apply to radio link transmissions in future wireless network for frequency division duplex (FDD) and time division duplex (TDD) communications.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: January 28, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Liqing Zhang, Kelvin Kar Kin Au, Jianglei Ma, Wen Tong, Toufiqul Islam
  • Patent number: 10541773
    Abstract: In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the invention data and/or pilots are spread within each cluster using code division multiplexing (CDM). In some embodiments pilots and data are separated by distributing data on a particular number of the plurality of OFDM symbol durations and pilots on a remainder of the OFDM symbol durations. CDM spreading can be performed in time and/or frequency directions.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: January 21, 2020
    Assignee: Apple Inc.
    Inventors: Jianglei Ma, Ming Jia, Wen Tong, Peiying Zhu, Hua Xu, Hang Zhang, Mo-Han Fong
  • Patent number: 10536946
    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: Grant
    Filed: November 18, 2016
    Date of Patent: January 14, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Peiying Zhu, Jianglei Ma, Wen Tong
  • Publication number: 20200014521
    Abstract: System and method embodiments are provided for non-cellular wireless access. In an embodiment, a method for non-cell grid based radio access in a radio access network includes determining, by a controller, a group of transmit points (TPs) to assign to a logical entity; assigning, by the controller, a logical entity identifier (ID) to the logical entity, wherein the logical entity ID identifies the logical entity through which a user equipment (UE) communicates with the radio access network; and causing, by the controller, at least one of the TPs in the logical entity to send signals to the UE.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Inventors: Jianglei Ma, Ming Jia, Peiying Zhu, Wen Tong
  • Patent number: 10531432
    Abstract: An embodiment method of resource allocation for sparse code multiple access (SCMA) transmissions includes partitioning a resource block into a plurality of resource regions. The method also includes assigning the plurality of resource regions to respective device groups. The resource region assignments are then signaled to devices of the respective device groups. The method also includes receiving SCMA signals from the devices of the respective device groups. The SCMA signals from one group of the respective device groups are asynchronous with respect to the SCMA signals from another group of the respective device groups.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: January 7, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianglei Ma, Ming Jia, Peiying Zhu, Wen Tong
  • Publication number: 20200007159
    Abstract: A low density parity check (LDPC) channel encoding method is used in a wireless communications system. A communication device encodes an input bit sequence by using an LDPC matrix, to obtain an encoded bit sequence for transmission. The LDPC matrix is obtained based on a lifting factor Z and a base matrix. The base matrix may be one of eight exemplary designs. The encoding method can be used in various communications systems including fifth generation (5G) telecommunication systems, and can support various encoding requirements for information bit sequences with different code lengths.
    Type: Application
    Filed: September 10, 2019
    Publication date: January 2, 2020
    Inventors: Jie JIN, Wen TONG, Jun WANG, Alexander Alexandrovich PETYUSHKO, Ivan Leonidovich MAZURENKO, Chaolong ZHANG
  • Publication number: 20200007217
    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: September 4, 2019
    Publication date: January 2, 2020
    Inventors: Mahmoud Taherzadehboroujeni, Hosein Nikopour, Amir Khandani, Wen Tong, Ming Jia, Peiying Zhu, Dong-Sheng Yu, Jianglei Ma
  • Patent number: 10523383
    Abstract: A method for transmitting a waveform includes adjusting first multiplexing parameters of a first multi-carrier waveform to meet communications requirements of a communications system, generating a first signal in accordance with a first input bit block and a first modulation map, placing the first signal in a first subband, wherein the first subband is specified in accordance with the first adjusted multiplexing parameters, and transmitting the first subband.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: December 31, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianglei Ma, Ming Jia, Wen Tong, Peiying Zhu
  • Patent number: 10524200
    Abstract: A method of transmitting includes categorizing a transmission between the first device and a second device as one of a plurality of transmission types, and selecting an air interface from a plurality of air interface candidates in accordance with the transmission as categorized. The method also includes sending the transmission to the second device using the selected air interface.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: December 31, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianglei Ma, Peiying Zhu, Ming Jia, Wen Tong
  • Patent number: 10512035
    Abstract: A method of transmitting includes categorizing a transmission between the first device and a second device as one of a plurality of transmission types, and selecting an air interface from a plurality of air interface candidates in accordance with the transmission as categorized. The method also includes sending the transmission to the second device using the selected air interface.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: December 17, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianglei Ma, Peiying Zhu, Ming Jia, Wen Tong
  • Patent number: 10505566
    Abstract: In a layered coding approach, a code configuration parameter of a polar code is determined, and encoding graph parameters are determined based on the determined code configuration parameter. The encoding graph parameters identify inputs for one or more kernel operations in each of multiple encoding layers. Information symbols are encoded by applying the one or more kernel operations to the inputs identified in each encoding layer in accordance with the determined encoding graph parameters.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: December 10, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Hamid Saber, Yiqun Ge, Wen Tong, Ran Zhang
  • Publication number: 20190372812
    Abstract: Pilot, preamble and midamble patterns are provided that are particularly suited for four transmit antenna OFDM systems. Pilots are inserted in a scattered manner for each of the four antennas, either uncoded, space-time coded in pairs, space-time frequency coded in pairs, or space-time-frequency coded.
    Type: Application
    Filed: July 15, 2019
    Publication date: December 5, 2019
    Inventors: Jianglei MA, Ming Jia, Wen Tong, Peiying Zhu, Claude Royer
  • Publication number: 20190369177
    Abstract: A power supply apparatus for a magnetic resonance apparatus has a power supply terminal module with a power supply unit and a reference voltage pull-down unit, and a load terminal module with a voltage comparator connected to a load power-feed terminal, which compares a nominal voltage and an actual voltage of the load power-feed terminal. A counter begins counting when the actual voltage is lower than the nominal voltage, and keeps its count unchanged when the actual voltage is equal to the nominal voltage, and emits a signal corresponding to the count to a digital-to-analog converter, connected to a phase inverter, which converts the digital signal to a positive analog voltage. A phase inverter is connected to an output voltage reference terminal of the power supply unit, and inverts the phase of the analog voltage to produce a negative analog voltage that compensates voltage drop loss on a cable between the power supply and the load power-feed terminal.
    Type: Application
    Filed: May 31, 2019
    Publication date: December 5, 2019
    Applicant: Siemens Shenzhen Magnetic Resonance Ltd.
    Inventors: Shu Du, Wen Ming Li, JianMin Wang, Tong Tong
  • Patent number: 10498416
    Abstract: In accordance with an embodiment, a method of operating a base station configured to communicate with at least one user device includes transmitting a reference signal to the at least one user device, receiving channel quality information from the at least one user device, and forming a beam based on the channel quality information received from the at least one user device.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: December 3, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianglei Ma, Peiying Zhu, Wen Tong, Ming Jia
  • Patent number: 10491326
    Abstract: Embodiment techniques map parity bits to sub-channels based on their row weights. In one example, an embodiment technique includes allocating, from a set of sub-channels, one or more sub-channels for one or more parity bits based on row weights for sub-channels in a subset of sub-channels within the set of sub-channels, mapping information bits to remaining sub-channels in the set of sub-channels based on a reliability of the remaining sub-channels without mapping any of the information bits to the one or more sub-channels allocated for the one or more parity bits, polar encoding the information bits and the one or more parity bits based on at least the mapping of the information bits to the remaining sub-channels to obtain encoded bits, and transmitting the encoded bits to another device.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: November 26, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Huazi Zhang, Jiajie Tong, Rong Li, Jun Wang, Wen Tong, Yiqun Ge, Xiaocheng Liu, Gongzheng Zhang, Jian Wang, Nan Cheng, Qifan Zhang
  • Patent number: 10484130
    Abstract: Embodiments of this disclosure enhance the error detection performance of parallel polar encoding by cross-concatenating parity bits between segments of information bits transmitted over different sets of sub-channels. In one embodiment, a first segment of information bits is transmitted over a first set of sub-channels, and at least a second segment of information bits, and a masked parity bit, are transmitted over a second set of sub-channels. A value of the masked parity bit is equal to a bitwise combination of a first parity bit computed from the first segment of information bits and a second parity bit computed from the second segment of information bits. The bitwise combination may be a bitwise AND, a bitwise OR, or a bitwise XOR of the respective parity bits.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: November 19, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Huazi Zhang, Gongzheng Zhang, Rong Li, Jun Wang, Wen Tong, Yiqun Ge