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公开(公告)号：US12131258B2
公开(公告)日：2024-10-29
申请号：US17030315
申请日：2020-09-23
发明人： Yadong Lu , Ying Wang , Tijmen Pieter Frederik Blankevoort , Christos Louizos , Matthias Reisser , Jilei Hou
摘要： A method for compressing a deep neural network includes determining a pruning ratio for a channel and a mixed-precision quantization bit-width based on an operational budget of a device implementing the deep neural network. The method further includes quantizing a weight parameter of the deep neural network and/or an activation parameter of the deep neural network based on the quantization bit-width. The method also includes pruning the channel of the deep neural network based on the pruning ratio.
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公开(公告)号：US12034534B2
公开(公告)日：2024-07-09
申请号：US18187255
申请日：2023-03-21
发明人： Changlong Xu , Jian Li , Chao Wei , Jing Jiang , Jilei Hou
CPC分类号： H04L1/0058 , G06F9/30029 , H03M13/098 , H03M13/13 , H04B7/2668 , H04L1/0046 , H04L1/0052 , H04L1/0061 , H04L1/0063 , H04W40/02
摘要： Methods, systems, and devices for wireless communication are described for dynamic frozen bits of polar codes for early termination and performance improvement. A wireless device may receive a signal comprising a codeword encoded using a polar code. The wireless device may perform decoding of the codeword including at least: parity check of a first subset of decoding paths for making a decision on early termination of decoding of the codeword based on dynamic frozen bits, and generating path metrics for a second subset of the decoding paths that each pass the parity check based on the dynamic frozen bits, and performing error detection on a bit sequence corresponding to one of the second subset of the decoding paths based at part on error detection bits and the generated path metrics. The wireless device may process the information bits based on a result of the decoding.
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公开(公告)号：US11677448B2
公开(公告)日：2023-06-13
申请号：US15549597
申请日：2016-02-09
发明人： Chao Wei , Wanshi Chen , Peter Gaal , Guodong Li , Jilei Hou
IPC分类号： H04B7/0452 , H04B7/0456 , H04L5/00 , H04L25/02 , H04W72/04 , H04W72/12 , H04W72/0453
CPC分类号： H04B7/0452 , H04B7/0456 , H04L5/0007 , H04L5/0021 , H04L5/0048 , H04L25/0242 , H04W72/0453 , H04W72/1289
摘要： Certain aspects of the present disclosure support demodulation reference signal (DMRS) enhancement for higher order multi-user multiple-input multiple-output (MU-MIMO) communications. An example method generally includes determining a plurality of ports of a multi-dimensional array of transmit antennas and a number of spatial multiplexed layers for transmission to a plurality of user equipments (UEs), configuring a demodulation reference signal (DMRS) pattern by multiplexing the layers or the ports in the DMRS pattern, using an orthogonal cover code (OCC) and one or more code division multiplexing (CDM) groups, and transmitting DMRS symbols based on the configured DMRS pattern using the multiplexed layers and the ports.
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公开(公告)号：US11657282B2
公开(公告)日：2023-05-23
申请号：US16571760
申请日：2019-09-16
发明人： Jamie Menjay Lin , Yang Yang , Jilei Hou
CPC分类号： G06N3/0472 , G06F17/15 , G06F17/16 , G06K9/6262 , G06N3/04 , G06N3/08 , G06N3/084 , G06K9/6267 , G06T7/70 , G06T2207/20084 , G06V40/10
摘要： Embodiments described herein relate to a method, comprising: receiving input data at a convolutional neural network (CNN) model; generating a factorized computation network comprising a plurality of connections between a first layer of the CNN model and a second layer of the CNN model, wherein: the factorized computation network comprises N inputs, the factorized computation network comprises M outputs, and the factorized computation network comprises at least one path from every input of the N inputs to every output of the M outputs; setting a connection weight for a plurality of connections in the factorized computation network to 1 so that a weight density for the factorized computation network is
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公开(公告)号：US11283497B2
公开(公告)日：2022-03-22
申请号：US16599018
申请日：2019-10-10
发明人： Yu Zhang , Chao Wei , Peng Cheng , Neng Wang , Jilei Hou
IPC分类号： H04B7/0456 , H04L1/00 , H04W16/10 , H04L1/06 , H04L1/18 , H04B7/06 , H04B7/0452 , H04W16/28 , H04B7/0426
摘要： Certain aspects of the present disclosure provide methods and apparatus for linear precoding in full-dimensional MIMO (FD-MIMO) systems. According to aspects, an eNB may compress a larger number of antenna elements to a smaller number of antenna ports. The eNB may use a port precoding matrix to transmit reference signals to a UE, receive feedback regarding CSI based on the reference signals, and transmit data to the UE, based on a mapping of multiple data layers and mapping of antenna ports to the physical antenna elements. Further, aspects include performing elevation beamforming by dynamically forming one or more vertical sectors based on UE feedback in the elevation domain.
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公开(公告)号：US11177862B2
公开(公告)日：2021-11-16
申请号：US16088285
申请日：2017-05-10
申请人： QUALCOMM Incorporated , Chao Wei , Yu Zhang , Bo Chen , Jilei Hou
IPC分类号： H04W4/00 , H04B7/0452 , H04B7/0417 , H04B7/0456 , H04B7/06 , H04L5/00
摘要： A hybrid class B channel state information (CSI) reference signal (CSI-RS) scheme is discussed which configures one cell-common beamformed CSI-RS resource for beam tracking and another UE-specific beamformed CSI-RS resource for CSI feedback. The cell-common beamformed CSI-RS resource may be transmitted at a longer periodicity and shared by user equipments (UEs) in the cell. The beamforming may be cycled over a set of predefined weights transparent to UE. The UE-specific beamformed CSI-RS may be transmitted at a shorter periodicity and can be activated dynamically to allow resource sharing among multiple UEs. The UEs will report a CSI for the cell-common beamformed CSI-RS resource which provides a quality indicator for the associated cell-common beam and is utilized by the base station to determine the precoding weight for the UE-specific beamformed CSI-RS resource. Both resources can be configured with different parameter sets, such as number of ports, codebook type, and CSI reporting parameters.
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公开(公告)号：US11171672B2
公开(公告)日：2021-11-09
申请号：US16471388
申请日：2018-01-16
申请人： Jian Li , Changlong Xu , Chao Wei , Jilei Hou , Jing Jiang , QUALCOMM Incorporated
发明人： Jian Li , Changlong Xu , Chao Wei , Jilei Hou , Jing Jiang
摘要： Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for dynamic frozen polar codes, for example, for control channels. An exemplary method may be performed at the encoder. The method generally includes encoding a stream of bits using a polar code. The encoding includes selecting a first set of channel indices for encoding information bits. The encoding includes selecting a second set of the channel indices smaller than a channel index for a first information bit for encoding fixed frozen bits. The encoding includes selecting remaining channel indices for dynamic frozen (PCF) bits having values based on one or more of the information bits. The method includes transmitting the encoded stream of bits.
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公开(公告)号：US10944517B2
公开(公告)日：2021-03-09
申请号：US16078480
申请日：2016-11-04
申请人： Jian Li , Changlong Xu , Jilei Hou , Neng Wang , Chao Wei , QUALCOMM Incorporated
发明人： Jian Li , Changlong Xu , Jilei Hou , Neng Wang , Chao Wei
摘要： For communication utilizing polar codes, a hybrid automatic repeat request algorithm utilizing incremental redundancy (HARQ-IR) may provide increased throughput by including new data, not based on an original transmission, in a HARQ retransmission. The number of retransmitted bits and new information bits in each HARQ retransmission may be controlled in order to manage a tradeoff between increased throughput and a decreased block error rate (BLER).
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公开(公告)号：US10721029B2
公开(公告)日：2020-07-21
申请号：US16091081
申请日：2017-03-03
发明人： Changlong Xu , Jian Li , Chao Wei , Neng Wang , Jilei Hou
摘要： The present disclosure describes a method, an apparatus, and a computer readable medium for hybrid automatic repeat request (HARQ) transmissions. For example, the method may include generating a first codeword for a first information block, wherein the first codeword is a first polar code, and wherein the first information block includes cyclic redundancy check (CRC) bits; transmitting the first codeword to a receiver; determining that the first polar code is not successfully decoded at the receiver based at least on a first message received from the receiver; generating a second codeword for a second information block, wherein the second codeword is a first enhanced polar code, and wherein the second information block does not include any CRC bits; transmitting the second codeword to the receiver; and determining that the second codeword and the first codeword are successfully decoded at the receiver based at least on a second message received from the receiver.
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公开(公告)号：US20200100214A1
公开(公告)日：2020-03-26
申请号：US16467454
申请日：2018-01-24
申请人： Chao WEI , Jilei HOU , Changlong XU , Jian LI , Qualcomm Incorporated
发明人： Chao Wei , Changlong Xu , Jilei Hou , Jian Li
摘要： Methods, systems, and devices for wireless communication are described. In order to exchange data over a given wireless communication network, a wireless device may first perform a cell acquisition procedure (e.g., to determine cell-specific information such as timing and frequency offsets, bandwidth, control channel formatting, etc.). In some systems, aspects of the timing information may be conveyed with scrambling codes applied to a master information block (MIB). Physical broadcast channel (PBCH) payloads, including MIB transmissions, may be jointly encoded with synchronization signal indices. Bursts of MIB transmissions may thus be decoded without blind decoding while maintaining error protection and low latency that may be necessary to obtain critical system information within the MIB.
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