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公开(公告)号：EP4109447A1
公开(公告)日：2022-12-28
申请号：EP21768319.2
申请日：2021-03-11
发明人： ZHENG, Chao , LIU, Sheng
IPC分类号： G11B9/10
摘要： This application discloses a data writing and reading method and apparatus, and a system. The method increases a data storage density. The method is applied to a data storage system. The storage system includes a processor, a charged particle beam excitation modulation component, and a recording medium. The method is performed by the processor. The data writing method includes: obtaining to-be-written data; controlling, based on the to-be-written data, the charged particle beam excitation modulation component to generate a charged particle beam array with a target modulation feature; and controlling the charged particle beams in the charged particle beam array to act on the recording medium, to generate, in a target area of the recording medium, a target recording feature corresponding to the to-be-written data. The data reading method includes: controlling the charged particle beams in the charged particle beam array to act on a reacting area of the recording medium, to determine a target recording feature of a target area; and reading, based on the determined target recording feature of the target area, the to-be-read data.
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公开(公告)号：EP3726654A1
公开(公告)日：2020-10-21
申请号：EP20169270.4
申请日：2020-04-14
发明人： LIU, Sheng
摘要： An antenna array and a wireless device using the antenna array are disclosed. The antenna array includes a first antenna set and a first radio frequency lens set. The first antenna set includes a plurality of antennas, and the first radio frequency lens set includes a plurality of radio frequency lenses. The plurality of antennas and the plurality of radio frequency lenses are arranged according to rules. According to the rules, the first radio frequency lens set can be used to increase a phase difference between radio signals from antennas.
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公开(公告)号：EP2709418B1
公开(公告)日：2020-03-25
申请号：EP11795095.6
申请日：2011-05-31
发明人： LIU, Sheng
IPC分类号： H04W36/22
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公开(公告)号：EP3570509A1
公开(公告)日：2019-11-20
申请号：EP18828247.9
申请日：2018-07-04
发明人： YU, Jian , LIU, Sheng
IPC分类号： H04L27/26
摘要： Embodiments of the present invention disclose a data processing method and apparatus, and belong to the field of communications technologies. The method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a preamble field, a data field, and a middle preamble field, and the preamble in the PPDU includes information used to indicate an insertion frequency of the middle preamble in the data field in the PPDU; and sending the PPDU. The insertion frequency of the middle preamble in the data field is indicated by using a specified field in the preamble. In this way, in different scenarios, the middle preamble may be inserted into the data field at different frequency, thereby reducing overheads of an inserted pilot and improving data transmission performance.
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公开(公告)号：EP3197068B1
公开(公告)日：2019-05-08
申请号：EP14903941.4
申请日：2014-10-13
发明人： CHEN, Teyan , LIU, Sheng
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公开(公告)号：EP3160099B1
公开(公告)日：2018-12-05
申请号：EP14895373.0
申请日：2014-06-17
发明人： LIU, Sheng , LAN, Zhou , CHEN, Teyan
CPC分类号： H04L5/0044 , H04L1/0003 , H04L5/0053 , H04L25/02 , H04L27/20 , H04W84/12
摘要： Embodiments of the present invention disclose a frame transmission method and an apparatus for a wireless local area network, which relate to the field of communications technologies. In the present invention, in a WLAN frame transmission process, a frame sent by a wireless local area network WLAN device is received, and identification of frames of different standards is completed by detecting a format indication field included in the frame, so as to implement backward compatibility of the WLAN device, so that hybrid networking of WLAN devices of different standards can be supported, flexibility of network deployment is improved, and networking complexity is reduced.
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公开(公告)号：EP2574138B1
公开(公告)日：2018-08-08
申请号：EP11851653.3
申请日：2011-08-25
发明人： LIU, Sheng
CPC分类号： H04W72/042 , H04L5/0023 , H04L5/0037 , H04L5/0048 , H04L5/0053 , H04W88/085
摘要： A downlink baseband signal generating method, a relevant device, and a relevant system are disclosed. The downlink baseband signal generating method includes: performing channel coding and modulation on a downlink data stream of a user in a cell, and obtaining a downlink coded and modulated user signal of the cell; generating a downlink control channel signal according to physical-layer control information; and forwarding the reference signal, synchronization signal, broadcast channel signal, downlink coded and modulated user signal, and downlink control channel signal to the corresponding RRU, so that the corresponding RRU performs MIMO precoding on the downlink coded and modulated user signal, maps the MIMO-precoded signal, the downlink control channel signal, reference signal, synchronization signal, and broadcast channel signal to their respective subcarriers, performs IFFT transformation to obtain a downlink baseband signal, and sends the signal out. The embodiments of the present invention can reduce the signal transmission bandwidth between the C-RAN node and the RRU.
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公开(公告)号：EP2557722B1
公开(公告)日：2017-12-20
申请号：EP11777174.1
申请日：2011-05-06
发明人： LIU, Sheng , DU, Yinggang
IPC分类号： H04B7/04 , H04B7/0456 , H04B7/06 , H04L1/06
CPC分类号： H04B7/046 , H04B7/0634 , H04B7/0663
摘要： A method and device for acquiring a precoding matrix are provided by the present invention. The method for acquiring a precoding matrix includes: for each receiving end, selecting the interference vectors as the interference space basis vectors from whole interference vectors, representing the remaining interference vectors as the linear combination of the interference space basis vectors, wherein the remaining interference vectors are the interference vectors in the whole interference vectors of the receiving end except the interference vectors which act as the interference space basis vectors (101); determining the currently used precoding matrix according to the linear combination of the interference space basis vectors represented by the remaining interference vectors of each receiving end and the current channel condition (102). The technical solution of the present invention can eliminate interference and do not generate Bit Error Rate (BER) floor.
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