Patents by Inventor Kong Chau Tsang

Kong Chau Tsang 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).

  • Publication number: 20230276524
    Abstract: Described is a method and device for detecting a DTX state at a UCI receiver in a wireless communication system. The method comprises receiving a linear block encoded signal on an uplink at said UCI receiver and processing the received signal after resource element (RE) demapping to generate a soft bit sequence s. The method includes selecting a plurality of bits in said generated soft bit sequence s as comparison bits and comparing said selected comparison bits to corresponding bits in a reconstructed soft bit sequence r. The reconstructed soft bit sequence r is generated from a plurality of bits selected as reconstruction bits in said generated soft bit sequence s. A comparison or correlation metric is determined between the comparison bits and the corresponding bits in the reconstructed soft bit sequence r, and a determination is made of the occurrence of a DTX state by evaluating the determined comparison or correlation metric.
    Type: Application
    Filed: February 25, 2022
    Publication date: August 31, 2023
    Inventors: Yaming Luo, Man Wai Kwan, Xiangyu Liu, Yanda Mou, Kong Chau Tsang
  • Patent number: 11611987
    Abstract: Described is a method and device for detecting a discontinuous transmission (DTX) state or a partial DTX state at an uplink control information (UCI) receiver in a wireless communication system. The method comprises receiving a linear block encoded signal on an uplink (UL) at said UCI receiver and processing said signal after resource element (RE) demapping to obtain a soft bit sequence. The soft bit sequence is then transformed into multiple sub-sequences. Correlation metrics are determined for two or more of the multiple sub-sequences or two or more sub-sequence groups derived from the multiple sub-sequences or sequence segments derived from the sub-sequence groups. Then, a determination is made if a DTX state has occurred by evaluating the determined correlation metrics.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: March 21, 2023
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd
    Inventors: Yaming Luo, Yunxiang Yao, Man Wai Kwan, Xiangyu Liu, Shuaimin Jiang, Kong Chau Tsang
  • Patent number: 11575189
    Abstract: Described is a bandpass filter comprising a multi-layered body, a first resonator conductor formed on a first layer of the body and a second resonator conductor formed on a second, tower layer of the body. The first resonator conductor and the second resonator conductor comprise a first coupling area formed by only a partial overlap of the first resonator conductor and the second resonator conductor. A length of each said resonator conductor is in the range of ?g/3 to ?g/5, where ?g. is a center wavelength of the bandpass filter passband.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: February 7, 2023
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Xiaolong Huang, Yujiang Wu, Yuxian Zhang, Eric Kong Chau Tsang
  • Patent number: 11575390
    Abstract: Systems and methods which provide parallel processing of multiple message bundles for a codeword undergoing a decoding process are described. Embodiments provide low-latency segmented quasi-cyclic low-density parity-check (QC-LDDC) decoder configurations in which decoding process tasks are allocated to different segments of the low-latency segmented QC-LDPC decoder for processing multiple bundles of messages in parallel. A segmented shifter of a low-latency segmented QC-LDPC decoder implementation may be configured to process multiple bundles of a plurality of edge paths in parallel. Multiple bundles of messages of a same check node cluster (CNC) are processed in parallel. Additionally, multiple bundles of messages of a plurality of CNCs are processed in parallel.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: February 7, 2023
    Assignee: Hong Kong Applied Science and Technology Research Insitute Co., Ltd.
    Inventors: Hing-Mo Lam, Hin-Tat Chan, Ying-Lun Tsui, Zhonghui Zhang, Man-Wai Kwan, Kong-Chau Tsang
  • Publication number: 20230006694
    Abstract: Systems and methods which provide parallel processing of multiple message bundles for a codeword undergoing a decoding process are described. Embodiments provide low-latency segmented quasi-cyclic low-density parity-check (QC-LDPC) decoder configurations in which decoding process tasks are allocated to different segments of the low-latency segmented QC-LDPC decoder for processing multiple bundles of messages in parallel. A segmented shifter of a low-latency segmented QC-LDPC decoder implementation may be configured to process multiple bundles of a plurality of edge paths in parallel. Multiple bundles of messages of a same check node cluster (CNC) are processed in parallel. Additionally, multiple bundles of messages of a plurality of CNCs are processed in parallel.
    Type: Application
    Filed: July 2, 2021
    Publication date: January 5, 2023
    Inventors: Hing-Mo Lam, Hin-Tat Chan, Ying-Lun Tsue, Zhonghui Zhang, Man-Wai Kwan, Kong-Chau Tsang
  • Patent number: 11457502
    Abstract: Described is a method and device for detecting a discontinuous transmission state (DTX) at an uplink control information (UCI) receiver device in a wireless communication system. The method involves receiving a linear block encoded signal on an uplink (UL) at said UCI receiver device and processing the received linear block encoded signal after resource element (RE) dernapping to obtain channel estimation data. The method includes determining from said channel estimation data a DTX metric for one or more selected resource blocks (RBs) and determining if a DTX state has occurred by comparing the determined DTX metric to a calculated, selected, or predetermined threshold.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: September 27, 2022
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Yaming Luo, Yunxiang Yao, Man Wai Kwan, Xiangyu Liu, Yiu Wing Edwin Chan, Kong Chau Tsang
  • Publication number: 20220256642
    Abstract: Described is a method and device for detecting a discontinuous transmission state (DTX) at an uplink control information (UCI) receiver device in a wireless communication system. The method involves receiving a linear block encoded signal on an uplink (UL) at said UCI receiver device and processing the received linear block encoded signal after resource element (RE) dernapping to obtain channel estimation data. The method includes determining from said channel estimation data a DTX metric for one or more selected resource blocks (RBs) and determining if a DTX state has occurred by comparing the determined DTX metric to a calculated, selected, or predetermined threshold.
    Type: Application
    Filed: February 9, 2021
    Publication date: August 11, 2022
    Inventors: Yaming Luo, Yunxiang Yao, Man Wai Kwan, Xiangyu Liu, Yiu Wing Edwin Chan, Kong Chau Tsang
  • Publication number: 20220217714
    Abstract: Described is a method of processing a signal received at an uplink control information (UCI) receiver in a wireless communication system. The method comprises processing a signal received on an uplink (UL) at said UCI receiver to transform said received signal into a likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N) and determining a maximum magnitude ?max value from said likelihood calculation. The method includes comparing said maximum magnitude ?max value to a selected, calculated or predetermined scaled threshold S·? where ? is a threshold and S is a scaling factor for the threshold ?. The comparison step is such that, where |?max|2>S·?, the method comprises determining that the signal received comprises a linear block encoded signal. In the method, prior to said comparison step, the scaling factor S is selected from a plurality of scaling factor options.
    Type: Application
    Filed: January 7, 2021
    Publication date: July 7, 2022
    Inventors: Yaming Luo, Yunxiang Yao, Man Wai Kwan, Xiangyu Liu, Ying Lun Tsui, Kong Chau Tsang
  • Publication number: 20220217710
    Abstract: Described is a method and device for detecting a discontinuous transmission (DTX) state or a partial DTX state at an uplink control information (UCI) receiver in a wireless communication system. The method comprises receiving a linear block encoded signal on an uplink (UL) at said UCI receiver and processing said signal after resource element (RE) demapping to obtain a soft bit sequence. The soft bit sequence is then transformed into multiple sub-sequences. Correlation metrics are determined for two or more of the multiple sub-sequences or two or more sub-sequence groups derived from the multiple sub-sequences or sequence segments derived from the sub-sequence groups. Then, a determination is made if a DTX state has occurred by evaluating the determined correlation metrics.
    Type: Application
    Filed: January 5, 2021
    Publication date: July 7, 2022
    Inventors: Yaming Luo, Yunxiang Yao, Man Wai Kwan, Xiangyu Liu, Shuaimin Jiang, Kong Chau Tsang
  • Patent number: 11375486
    Abstract: Described is a method of processing a signal received at an uplink control information (UCI) receiver in a wireless communication system. The method comprises processing a signal received on an uplink (UL) at said UCI receiver to transform said received signal into a likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N) and determining a maximum magnitude ?max value from said likelihood calculation. The method includes comparing said maximum magnitude ?max value to a selected, calculated or predetermined scaled threshold S·? where ? is a threshold and S is a scaling factor for the threshold ?. The comparison step is such that, where |?max|2>S·?, the method comprises determining that the signal received comprises a linear block encoded signal. In the method, prior to said comparison step, the scaling factor S is selected from a plurality of scaling factor options.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: June 28, 2022
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Yaming Luo, Yunxiang Yao, Man Wai Kwan, Xiangyu Liu, Ying Lun Tsui, Kong Chau Tsang
  • Patent number: 11363578
    Abstract: Described is a method and device for processing a signal received at an uplink control information (UCI) receiver in a wireless communication system. The method comprises processing a signal received on an uplink (UL) at said UCI receiver to transform said received signal into a likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N). The likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N) may comprise a multi-dimensional discrete Fourier transform (DFT) (?1 . . . ?i . . . ?N) of said received signal. The multi-dimensional may be formed as a Hadamard Transform. The method includes determining a maximum magnitude ?max value from said likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N) and then comparing said ?max value to a selected, calculated or predetermined scaled threshold c·? where ? is a threshold and c is a scaling factor for the threshold ?.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: June 14, 2022
    Assignee: Hong Kong Applied Science and Technology Research Institue Company Limited
    Inventors: Yaming Luo, Man Wai Kwan, Xiangyu Liu, Kanghao Jia, Kong Chau Tsang
  • Patent number: 11284405
    Abstract: Described is a method of reducing uplink inter-cell interference in a cellular communications network. The method comprises identifying in a cell any user equipments (UEs) which are susceptible to interference (ISUs) from another UE, particularly another UE in a neighboring cell. The method includes identifying in said cell any UEs causing interference (ICUs) to at least one neighboring cell and, more particularly, causing interference to a UE in a neighboring cell. The identified ISUs and ICUs are combined into a priority list for frequency resource reservation or allocation in said cell. The method may include limiting the identification of ISUs and ICUs to a selected number of UEs within the cell.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: March 22, 2022
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Zizhou Wang, Qifeng Liao, Jihui Zhang, Man Wai Kwan, Kong Chau Tsang
  • Patent number: 11206167
    Abstract: A method of performing carrier frequency offset (CFO) estimation and/or time offset (TO) estimation at a radio equipment in a mobile communications system. The method allows, for each of a plurality of synchronization signal (SS) blocks (SSBs) in a SS Burst detected at said radio equipment, determining a CFO estimation and/or a TO estimation based on network information signal prediction. The method includes selecting at least some of said detected SSBs in said SSB Burst and combining the CFO estimations and/or the TO estimations to obtain improved CFO compensation and/or TO compensation for signal processing at said radio equipment.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: December 21, 2021
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limted
    Inventors: Haiming Zhang, Eddy Chiu, Man-Wai Kwan, Ho Yin Chan, Chunhua Sun, Kong Chau Tsang
  • Patent number: 11197279
    Abstract: Described is a method and apparatus for processing an uplink (UL) signal at a Physical Uplink Control Channel (PUCCH) in a wireless communication system to determine a discontinuous transmission (DTX) state. The method comprises receiving a UL channel signal at a PUCCH receiver apparatus and, after resource element (RE) demapping of said received UL channel signal in said PUCCH receiver apparatus, normalizing a signal power of at least one signal element or resource. The normalized power is compared to a selected, calculated or predetermined threshold and, based on said comparison, a determination is made on whether or not a DTX state has occurred.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: December 7, 2021
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Kanghao Jia, Yuxian Zhang, Man Wai Kwan, Kong Chau Tsang
  • Publication number: 20210307000
    Abstract: Described is a method and device for processing a signal received at an uplink control information (UCI) receiver in a wireless communication system. The method comprises processing a signal received on an uplink (UL) at said UCI receiver to transform said received signal into a likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N). The likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N) may comprise a multi-dimensional discrete Fourier transform (DFT) (?1 . . . ?i . . . ?N) of said received signal. The multi-dimensional may be formed as a Hadamard Transform. The method includes determining a maximum magnitude ?max value from said likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N) and then comparing said ?max value to a selected, calculated or predetermined scaled threshold c.? where ? is a threshold and c is a scaling factor for the threshold ?. The comparison is such that, where ?max>c.
    Type: Application
    Filed: March 24, 2020
    Publication date: September 30, 2021
    Inventors: Yaming Luo, Man Wai Kwan, Xiangyu Liu, Kanghao Jia, Kong Chau Tsang
  • Patent number: 11057159
    Abstract: Provided is a method for determining a Hybrid Automatic Repeat Request (HARQ) transmission signal. The method comprises receiving soft bits from a wireless communication physical channel uplink signal, said received soft bits being deemed to comprise HARQ LLRs and soft decoding said HARQ LLRs to output a hard ACK/NACK decision. The method includes processing said HARQ LLRs based on said hard ACK/NACK decision such that the processed HARQ LLRs map to a same or identical constellation point or points if the physical channel uplink signal contains an ACK or NACK transmission signal. The method also includes using said processed HARQ LLRs to determine if the physical channel uplink signal contains an ACK or NACK transmission signal or to determine if the physical channel uplink signal comprises discontinuous transmission (DTX).
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: July 6, 2021
    Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventors: Nan Li, Xiangyu Liu, Yuxian Zhang, Man Wai Kwan, Ho Yin Chan, Kong Chau Tsang
  • Patent number: 10877729
    Abstract: Systems and methods that provide reconfigurable shifter configurations supporting multiple instruction, multiple data (MIMD) are described. Shifters implemented according to embodiments support multiple data shifts with respect to an instance of data shifting, wherein multiple individual different data shifts are implemented at a time in parallel. Reconfigurable segmented scalable shifters of embodiments, in addition being reconfigurable for scalability in supporting data shifting with respect to various bit lengths of data, are configured to support data shifting of differing bit lengths in parallel. The data shifters of embodiments implement segmentation for facilitating data shifting with respect to differing bit lengths. Different data shift commands may be provided with respect to each such segment, thereby facilitating multiple data shifts in parallel with respect to various bit lengths of data.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: December 29, 2020
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Hing-Mo Lam, Man-Wai Kwan, Ching-Hong Leung, Kong-Chau Tsang
  • Patent number: 10826529
    Abstract: Systems and methods providing low-density parity-check (LDPC) decoder configurations capable of decoding multiple code blocks in parallel are described. Parallel LDPC decoders of embodiments can be reconfigured to simultaneously decode multiple codewords with reconfigurable size. In operation of embodiments of a parallel LDPC decoder, a plurality of active portions of the decoder logic are configured for parallel processing of a plurality of code blocks, wherein each active region processes a respective code block. The decoder logic active portions of embodiments are provided using a reconfigurable segmented scalable cyclic shifter supporting multiple instruction, multiple data (MIMD), wherein multiple individual different data shifts are implemented with respect to a plurality of code blocks in an instance of data shifting operation.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: November 3, 2020
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Hing-Mo Lam, Syed Mohsin Abbas, Zhuohan Yang, Zhonghui Zhang, Man-Wai Kwan, Ching-Hong Leung, Kong-Chau Tsang
  • Publication number: 20200314863
    Abstract: Described is a method of reducing uplink inter-cell interference in a cellular communications network. The method comprises identifying in a cell any user equipments (UEs) which are susceptible to interference (ISUs) from another UE, particularly another UE in a neighboring cell. The method includes identifying in said cell any UEs causing interference (ICUs) to at least one neighboring cell and, more particularly, causing interference to a UE in a neighboring cell. The identified ISUs and ICUs are combined into a priority list for frequency resource reservation or allocation in said cell. The method may include limiting the identification of ISUs and ICUs to a selected number of UEs within the cell.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 1, 2020
    Inventors: Zizhou Wang, Qifeng Liao, Jihui Zhang, Man Wai Kwan, Kong Chau Tsang
  • Publication number: 20200252080
    Abstract: Systems and methods providing low-density parity-check (LDPC) decoder configurations capable of decoding multiple code blocks in parallel are described. Parallel LDPC decoders of embodiments can be reconfigured to simultaneously decode multiple codewords with reconfigurable size. In operation of embodiments of a parallel LDPC decoder, a plurality of active portions of the decoder logic are configured for parallel processing of a plurality of code blocks, wherein each active region processes a respective code block. The decoder logic active portions of embodiments are provided using a reconfigurable segmented scalable cyclic shifter supporting multiple instruction, multiple data (MIMD), wherein multiple individual different data shifts are implemented with respect to a plurality of code blocks in an instance of data shifting operation.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 6, 2020
    Inventors: Hing-Mo Lam, Syed Mohsin Abbas, Zhuohan Yang, Zhonghui Zhang, Man-Wai Kwan, Ching-Hong Leung, Kong-Chau Tsang