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81. 发明授权

US10278134B2 Wireless device preamble transmission timing 有权
公开(公告)号：US10278134B2
公开(公告)日：2019-04-30
申请号：US15837743
申请日：2017-12-11
申请人： Comcast Cable Communications, LLC
发明人： Esmael Hejazi Dinan
IPC分类号： H04W72/04 , H04W52/14 , H04W76/27 , H04W52/18 , H04W52/36 , H04W52/40 , H04L5/00 , H04W74/00 , H04W74/08 , H04W56/00 , H04B7/26 , H04J11/00 , H04L1/18 , H04L5/14 , H04L27/18 , H04L12/24 , H04L29/12 , H04L29/06 , H04W52/24 , H04W52/32 , H04W52/50 , H04W88/02 , H04W88/08
摘要： Methods and apparatuses are described for wireless communications. Cells may be grouped into a plurality of cell groups. A wireless device may receive a control command and transmit a random access preamble via a secondary cell.

82. 发明授权

US10277373B2 Method for generating and transmitting pilot sequence using non-CAZAC sequence in wireless communication system 有权
公开(公告)号：US10277373B2
公开(公告)日：2019-04-30
申请号：US15323670
申请日：2015-08-19
申请人： LG ELECTRONICS INC.
发明人： Kilbom Lee , Jiwon Kang , Wookbong Lee , Jinsoo Choi , Dongguk Lim , Hangyu Cho , Eunsung Park
IPC分类号： H04L5/00 , H04L27/18 , H04L27/26 , H04L27/00
摘要： Disclosed is a method for transmitting a pilot sequence, the method comprising: generating a sequence set on the basis of a baseline sequence having non-CAZAC properties; and selecting any one pilot sequence form among sequence sets corresponding to different additional information, and transmitting same to a receiver.

83. 发明申请

US20190082228A1 BROADCAST SIGNAL FRAME GENERATION DEVICE AND BROADCAST SIGNAL FRAME GENERATION METHOD USING BOOTSTRAP INCLUDING SYMBOL FOR SIGNALING BICM MODE OF PREAMBLE AND OFDM PARAMETER TOGETHER 审中-公开
公开(公告)号：US20190082228A1
公开(公告)日：2019-03-14
申请号：US16185457
申请日：2018-11-09
申请人： Electronics and Telecommunications Research Institute
发明人： Sung-Ik PARK , Jae-Young LEE , Sun-Hyoung KWON , Heung-Mook KIM
IPC分类号： H04N21/61 , H04H20/42 , H04N21/2383 , H04L5/00 , H04L27/36 , H04W28/06 , H04L27/18 , H04L27/38
摘要： An apparatus and method for broadcast signal frame using a bootstrap including a symbol for signaling a BICM mode and OFDM parameters of a preamble, together are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a time interleaver configured to generate a time-interleaved signal by performing interleaving on a BICM output signal; and a frame builder configured to generate a broadcast signal frame including a bootstrap and a preamble using the time-interleaved signal. In this case, the bootstrap includes a symbol for signaling a BICM mode and OFDM parameters of L1-Basic of the preamble, together.

84. 发明申请

US20190044566A1 INTEGRATED CIRCUIT 审中-公开
公开(公告)号：US20190044566A1
公开(公告)日：2019-02-07
申请号：US16155234
申请日：2018-10-09
申请人： PANASONIC CORPORATION
发明人： Kenichi MIYOSHI , Hidetoshi SUZUKI , Katsuhiko HIRAMATSU , Christian WENGERTER , Alexander GOLITSCHEK EDLER VON ELBWART
IPC分类号： H04B1/40 , H04B15/00 , H04L27/18 , H04L27/34 , H04L27/36 , H04L5/00 , H04L1/00 , H04L27/38 , H04L25/02 , H04L27/04
摘要： Wireless communication wherein channel estimation accuracy is improved while keeping the position of each bit in a frame, even when a modulation system having a large modulation multiple value is used for a data symbol. An encoding operation encodes and outputs transmitting data (bit string) and a bit converting operation converts at least one bit of a plurality of bits constituting a data symbol to be used for channel estimation, among the encoded bit strings, into ‘1’ or ‘0’. A modulating operation modulates the bit string inputted from the bit converting operation by using a single modulation mapper and a plurality of data symbols are generated.

85. 发明授权

US10193735B2 Power allocation for superposition transmission 有权
公开(公告)号：US10193735B2
公开(公告)日：2019-01-29
申请号：US15014800
申请日：2016-02-03
申请人： Hyukjoon Kwon , Sandeep Krishnamurthy , Linbo Li , Jungwon Lee
发明人： Hyukjoon Kwon , Sandeep Krishnamurthy , Linbo Li , Jungwon Lee
IPC分类号： H04L27/34 , H04L27/18 , H04W72/04 , H04L5/00 , H04L1/00
摘要： Apparatuses, systems, and methods are described for power allocation in a superposition multiple access communication system capable of using non-uniform joint constellations or super-constellations. In one method, the conditional probability of a correctly-received symbol and a normalized weighting coefficient is calculated for each receiver and then the sum of weighted efficiencies is calculated. The optimal power allocation is determined for each receiver by maximizing the sum of weighted spectral efficiencies.

86. 发明申请

US20190020453A1 DATA TRANSMISSION METHOD AND DEVICE 审中-公开
公开(公告)号：US20190020453A1
公开(公告)日：2019-01-17
申请号：US16069452
申请日：2017-02-07
申请人： ZTE CORPORATION
发明人： Jin Xu , Bo Dai , Jun Xu , Zewei Chen
IPC分类号： H04L5/00 , H04L27/26 , H04L27/18
摘要： A data transmission method includes: selecting a t least a portion of bits from a data buffer of a transport block to form a kth subsequence of the transport block, and forming N subsequences in total; wherein, 1≤k≤N; and repeating the N subsequences of the transport block for T times, performing digital baseband modulation on the N subsequences, and then transmitting the N subsequences; wherein, T is a positive integer, a total number of repetitions of the N subsequences N*T is no less than a preset number of repetitions R, and R is a positive integer.

87. 发明授权

US10182367B2 Signaling to application lack of requested bandwidth 有权
公开(公告)号：US10182367B2
公开(公告)日：2019-01-15
申请号：US15189603
申请日：2016-06-22
申请人： MICROSOFT TECHNOLOGY LICENSING, LLC
发明人： Amer A. Hassan , Thomas W. Kuehnel , Deyun Wu , Christian Huitema , D. Gabriel Frost
IPC分类号： H04W28/02 , H04L5/00 , H04L5/14 , H04W28/24 , H04L29/06 , H04L27/18 , H04L27/34 , H03M1/12 , H03M9/00 , H04L27/26
摘要： A system for signaling an application when a requested data rate and Quality of Service cannot be achieved using OFDM wireless data transmission, and the application proceeds by either renegotiating QoS and data rate, or waiting until they requested rate and QoS are met.

88. 发明申请

US20190007067A1 INTERLEAVING AND MAPPING METHOD AND DEINTERLEAVING AND DEMAPPING METHOD FOR LDPC CODEWORD 审中-公开
公开(公告)号：US20190007067A1
公开(公告)日：2019-01-03
申请号：US16122896
申请日：2018-09-06
申请人： Shanghai National Engineering Research Center of Digital Television Co., Ltd.
发明人： Wenjun Zhang , Yijun Shi , Dazhi He , Yunfeng Guan , Yin Xu , Xufeng Guo
IPC分类号： H03M13/27 , H04L1/00 , H03M13/00 , H03M13/11 , H04L27/18 , H04L27/34
CPC分类号： H03M13/2792 , H03M13/036 , H03M13/1148 , H03M13/1165 , H03M13/152 , H03M13/255 , H03M13/271 , H03M13/2778 , H03M13/2906 , H03M13/6522 , H04L1/0041 , H04L1/0057 , H04L1/0058 , H04L1/0071 , H04L27/18 , H04L27/3405
摘要： An interleaving and mapping method and a deinterleaving and demapping method for an LDPC codeword are provided. The interleaving and mapping method comprises: performing first bit interleaving on a parity bits part of the LDPC codeword to obtain interleaved parity bits; splicing an information bit part of the codeword and the interleaved parity bits into a codeword after the first bit interleaving; dividing the codeword after the first bit interleaving into multiple consecutive bit subblocks in a predetermined length, and changing the order of the bit subblocks according to a corresponding permutation order (bit-swapping pattern) to form a codeword after second bit interleaving; dividing the codeword after the second bit interleaving into two parts, and writing the two parts into storage space in a column order respectively and reading the two parts from the storage space in a row order respectively to obtain a codeword after third bit interleaving.

89. 发明申请

US20190007066A1 INTERLEAVING AND MAPPING METHOD AND DEINTERLEAVING AND DEMAPPING METHOD FOR LDPC CODEWORD 审中-公开
公开(公告)号：US20190007066A1
公开(公告)日：2019-01-03
申请号：US16122893
申请日：2018-09-06
申请人： Shanghai National Engineering Research Center of Digital Television Co., Ltd.
发明人： Wenjun ZHANG , Yijun SHI , Dazhi HE , Yunfeng GUAN , Yin XU , Xufeng GUO
IPC分类号： H03M13/27 , H04L1/00 , H03M13/00 , H03M13/11 , H04L27/18 , H04L27/34
摘要： An interleaving and mapping method and a deinterleaving and demapping method for an LDPC codeword are provided. The interleaving and mapping method comprises: performing first bit interleaving on a parity bits part of the LDPC codeword to obtain interleaved parity bits; splicing an information bit part of the codeword and the interleaved parity bits into a codeword after the first bit interleaving; dividing the codeword after the first bit interleaving into multiple consecutive bit subblocks in a predetermined length, and changing the order of the bit subblocks according to a corresponding permutation order (bit-swapping pattern) to form a codeword after second bit interleaving; dividing the codeword after the second bit interleaving into two parts, and writing the two parts into storage space in a column order respectively and reading the two parts from the storage space in a row order respectively to obtain a codeword after third bit interleaving.

90. 发明授权

US10129053B2 Steepest descent FFE computation and tracking 有权
公开(公告)号：US10129053B2
公开(公告)日：2018-11-13
申请号：US15166654
申请日：2016-05-27
申请人： MULTIPHY LTD.
发明人： Or Vidal
IPC分类号： H04L27/18 , H04L25/03
摘要： A nonlinear equalizer for iteratively equalizing a data communication channel, which comprises a transmitter at the input of the channel, for transmitting data and one or more training sequences over the channel; a receiver at the output of the channel, for receiving the data and the one or more training sequences; a sampling circuit for sampling received data; a processor, for processing the samples. The processor is adapted to calculate the derivative of the MSE for each of the FFE taps; calculate the derivative of the variance of the enhanced noise with the FFE taps; iteratively update the FFE coefficients, while during each update, injecting samples of a known training sequence into the channel. During each update, the processor computes the derivative of the output noise variance, by applying convolution between the noise correlation and the current FFE taps; computes the effective channel and the modified effective channel; computes the derivative of the residual ISI, by applying correlation between the original channel h and the modified effective channel; and updates the FFE coefficients, with a step proportional to the opposite of the gradient.

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