Patents by Inventor Lizhong Zheng
Lizhong Zheng 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).
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Patent number: 11171693Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND?1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.Type: GrantFiled: October 28, 2019Date of Patent: November 9, 2021Assignee: QUALCOMM IncorporatedInventors: Jay Rodney Walton, Lizhong Zheng, John W. Ketchum, Mark S. Wallace, Steven J. Howard
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Publication number: 20200067575Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND?1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.Type: ApplicationFiled: October 28, 2019Publication date: February 27, 2020Inventors: Jay Rodney WALTON, Lizhong ZHENG, John W. KETCHUM, Mark S. WALLACE, Steven J. HOWARD
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Patent number: 10476560Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND?1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.Type: GrantFiled: October 9, 2017Date of Patent: November 12, 2019Assignee: QUALCOMM IncorporatedInventors: Jay Rodney Walton, Lizhong Zheng, John W. Ketchum, Mark S. Wallace, Steven J. Howard
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Publication number: 20190281609Abstract: A user equipment (UE) is described. The UE includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable to transmit or receive an ultra-reliable low latency communication (URLLC) transmission that overrides a downlink (DL) schedule or interferes on an uplink (UL) transmission with an enhanced mobile broadband (eMBB) transmission or a massive machine type communication (MMTC) transmission.Type: ApplicationFiled: May 17, 2019Publication date: September 12, 2019Inventors: John Michael Kowalski, Toshizo Nogami, Zhanping Yin, Jia Sheng, Lizhong Zheng, Kai Ying, Kenneth James Park
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Publication number: 20180048362Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND?1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.Type: ApplicationFiled: October 9, 2017Publication date: February 15, 2018Inventors: Jay Rodney Walton, Lizhong Zheng, John W. Ketchum, Mark S. Wallace, Steven J. Howard
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Publication number: 20180027576Abstract: A user equipment (UE) is described. The UE includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable to transmit or receive an ultra-reliable low latency communication (URLLC) transmission that overrides a downlink (DL) schedule or interferes on an uplink (UL) transmission with an enhanced mobile broadband (eMBB) transmission or a massive machine type communication (MMTC) transmission.Type: ApplicationFiled: July 19, 2017Publication date: January 25, 2018Inventors: John Michael Kowalski, Toshizo Nogami, Zhanping Yin, Jia Sheng, Lizhong Zheng, Kai Ying, Kenneth James Park
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Patent number: 9787375Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND?1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.Type: GrantFiled: October 24, 2014Date of Patent: October 10, 2017Assignee: QUALCOMM IncorporatedInventors: Jay Rodney Walton, Lizhong Zheng, John W. Ketchum, Mark S. Wallace, Steven J. Howard
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Publication number: 20160329936Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND?1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.Type: ApplicationFiled: October 24, 2014Publication date: November 10, 2016Inventors: Jay Rodney Walton, Lizhong Zheng, John W. Ketchum, Mark S. Wallace, Steven J. Howard
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Patent number: 8903016Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND?1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.Type: GrantFiled: June 18, 2012Date of Patent: December 2, 2014Assignee: QUALCOMM IncorporatedInventors: Jay Rodney Walton, Lizhong Zheng, John W. Ketchum, Mark S. Wallace, Steven J. Howard
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Patent number: 8806288Abstract: A method of encoding that uses standard codecs such as linear encoders and decoders for encoding and decoding data with different levels of robustness to errors is described. In one configuration, multiple encoders may be utilized, and one of the encoders may use a standard encoder such as a turbo code followed by a nonlinearity that creates an unequal distribution of ones and zeros in a binary representation of the code. In another configuration, a coder may be utilized that represents message outputs as “channels” that create state transitions (or symbol errors) in a data forward error correction coder.Type: GrantFiled: March 13, 2009Date of Patent: August 12, 2014Assignee: Sharp Laboratories of America, Inc.Inventors: John Michael Kowalski, Sayantan Choudhury, Kimihiko Imamura, Lizhong Zheng, Ahmad Khoshnevis, Zhanping Yin
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Patent number: 8792469Abstract: A method for coding control data with user data repetition is disclosed. Bits in user data may be removed. Bits in control data may be repeated to increase a number of bits in the control data. A number of bits in the user data that is the same as the number of bits in the control data may be copied. The copied user data bits may be added to the control data. The user data and the control data may be multiplexed.Type: GrantFiled: October 2, 2009Date of Patent: July 29, 2014Assignee: Sharp Laboratories of America, Inc.Inventors: Zhanping Yin, John M. Kowalski, Lizhong Zheng
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Patent number: 8619901Abstract: Input data may be coded in accordance with a coding method that allows for either coded data or messages to be transmitted with pre-determined, but unequal reliability over a communication channel. The coding method may allow the messages to be transmitted with higher reliability than the coded data. Messages may be transmitted when they are available. Otherwise, the coded data may be transmitted.Type: GrantFiled: April 25, 2008Date of Patent: December 31, 2013Assignee: Sharp Laboratories of America, Inc.Inventors: John M. Kowalski, Lizhong Zheng
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Patent number: 8553627Abstract: A method for transmitting uplink control information (UCI) using a physical uplink control channel (PUCCH) transmit diversity scheme is described. A UCI is coded with a Forward Error Correction code to obtain a coded UCI. The coded UCI is mapped to quadrature phase shift keying (QPSK) symbols to obtain a mapped coded UCI. A phase shift pattern is selected. A phase shift from the phase shift pattern is applied to the mapped coded UCI based on an acknowledge/negative-acknowledge (ACK/NACK) to obtain a phase shifted mapped coded UCI. The mapped coded UCI is sent using a PUCCH resource on a first antenna. The phase shifted mapped coded UCI is sent using a PUCCH resource on a second antenna.Type: GrantFiled: February 12, 2010Date of Patent: October 8, 2013Assignee: Sharp Laboratories of America, Inc.Inventors: Zhanping Yin, John M. Kowalski, Lizhong Zheng
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Patent number: 8543867Abstract: A communication device configured for transmission of Acknowledgement and Negative Acknowledgement (ACK/NACK) is described. The communication device includes a processor and instructions stored in memory. The communication device determines one or more thresholds based on a size of one or more code words and generates a compressed ACK/NACK sequence. The compressed ACK/NACK sequence identifies one or more correctly received code words and one or more incorrectly received code words if the number of incorrectly received code words is less than the threshold. If the number of incorrectly received code words is greater than the threshold, the compressed ACK/NACK sequence indicates that all of the one or more code words were incorrectly received.Type: GrantFiled: April 2, 2010Date of Patent: September 24, 2013Assignee: Sharp Laboratories of America, Inc.Inventors: Ahmad Khoshnevis, Lizhong Zheng, John M. Kowalski
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Patent number: 8479075Abstract: A system and method for preserving neighborhoods in codes are provided. A method for transmitting information includes receiving an information string to transmit, generating a first address and a second address from the information string, encoding the first address and the second address with a layered code encoder, thereby producing a codeword and transmitting the codeword. The generating is based on a linear block code.Type: GrantFiled: September 3, 2010Date of Patent: July 2, 2013Assignee: FutureWei Technologies, Inc.Inventors: Lizhong Zheng, Yufei Blankenship
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Patent number: 8325850Abstract: A system and method for digital communications with unbalanced codebooks is provided. A transmitter includes a channel encoder that generates an output codeword from an information vector provided by an information input, and a modulator/transmitter circuit coupled to the channel encoder. The modulator/transmitter circuit prepares the output codeword for transmission over a physical channel. The channel encoder encodes the information vector into an intermediate codeword using a first code and shapes the intermediate codeword into the output codeword having a desired distribution.Type: GrantFiled: January 25, 2010Date of Patent: December 4, 2012Assignee: FutureWei Technologies, Inc.Inventors: Lizhong Zheng, Yufei Blankenship
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Publication number: 20120250788Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND?1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.Type: ApplicationFiled: June 18, 2012Publication date: October 4, 2012Applicant: QUALCOMM INCORPORATEDInventors: Jay Rodney Walton, Lizhong Zheng, John W. Ketchum, Mark S. Wallace, Steven J. Howard
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Patent number: 8204149Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND?1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.Type: GrantFiled: December 9, 2004Date of Patent: June 19, 2012Assignee: QUALCOMM IncorporatedInventors: Jay Rodney Walton, Lizhong Zheng, John W. Ketchum, Mark S. Wallace, Steven J. Howard
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Publication number: 20120056764Abstract: A system and method for preserving neighborhoods in codes are provided. A method for transmitting information includes receiving an information string to transmit, generating a first address and a second address from the information string, encoding the first address and the second address with a layered code encoder, thereby producing a codeword and transmitting the codeword. The generating is based on a linear block code.Type: ApplicationFiled: September 3, 2010Publication date: March 8, 2012Applicant: FutureWei Technologies, Inc.Inventors: Lizhong Zheng, Yufei Blankenship
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Publication number: 20110246840Abstract: A communication device configured for transmission of Acknowledgement and Negative Acknowledgement (ACK/NACK) is described. The communication device includes a processor and instructions stored in memory. The communication device determines one or more thresholds based on a size of one or more code words and generates a compressed ACK/NACK sequence. The compressed ACK/NACK sequence identifies one or more correctly received code words and one or more incorrectly received code words if the number of incorrectly received code words is less than the threshold. If the number of incorrectly received code words is greater than the threshold, the compressed ACK/NACK sequence indicates that all of the one or more code words were incorrectly received.Type: ApplicationFiled: April 2, 2010Publication date: October 6, 2011Applicant: Sharp Laboratories of America, Inc.Inventors: Ahmad Khoshnevis, Lizhong Zheng, John M. Kowalski