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公开(公告)号：EP4383661A1
公开(公告)日：2024-06-12
申请号：EP22855365.7
申请日：2022-08-08
发明人： LIU, Chenchen , WU, Mingjiang , LEI, Xianfu , TANG, Xiaohu
IPC分类号： H04L27/26
CPC分类号： H04L27/26
摘要： This application provides a data transmission method and a communication apparatus. The method includes: A first device receives a trigger frame, where the trigger frame indicates a resource unit RU allocated to the first device; and the first device sends first data to a second device, where the first data occupies a discrete subcarrier in the RU. Based on the method provided by this application, a transmit power of a subcarrier can be increased, and transmission performance can be ensured.
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公开(公告)号：EP4050829A1
公开(公告)日：2022-08-31
申请号：EP20886709.3
申请日：2020-11-13
发明人： LIANG, Dandan , GU, Zhi , LIN, Wei , GAN, Ming , LEI, Xianfu , ZHOU, Zhengchun
摘要： This application provides a method and apparatus for transmitting a physical layer protocol data unit, so as to design a long training field sequence for a larger channel bandwidth. The method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a long training field, a length of a frequency domain sequence of the long training field is greater than a first length, and the first length is a length of a frequency domain sequence of a long training field of a PPDU transmitted over a channel whose bandwidth is 160 MHz; and sending the PPDU over a target channel, where a bandwidth of the target channel is greater than 160 MHz.
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公开(公告)号：EP4156522A1
公开(公告)日：2023-03-29
申请号：EP21807567.9
申请日：2021-05-08
发明人： LIN, Wei , WANG, Hui , LEI, Xianfu , GAN, Ming , TANG, Xiaohu
摘要： This application provides an LDPC rate matching method and a communication apparatus. During retransmission, a transmit end repeatedly sends information bits of an LDPC codeword based on an order of repetition priorities of the information bits in rate matching, so that a performance gain of a receive end can be obtained. The order of repetition priorities of information bits is determined based on sensitivity of LDPC codewords. Therefore, in the order of repetition priorities, an information bit with higher sensitivity has a lower repetition priority, and an information bit with lower sensitivity has a higher repetition priority. Therefore, when the transmit end repeats the information bits of the LDPC codeword, an information bit with lower sensitivity is repeated first, so that decoding performance of the receive end can be improved.
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公开(公告)号：EP4109794A1
公开(公告)日：2022-12-28
申请号：EP21767474.6
申请日：2021-03-12
发明人： LIN, Wei , WANG, Hui , GAN, Ming , LEI, Xianfu , TANG, Xiaohu
IPC分类号： H04L1/00
摘要： This application provides an LDPC code rate matching method and a communication apparatus. A transmit end punctures an LDPC codeword based on a priority order of check bits of a mother code of an LDPC code. This can avoid impact of check bits at some highly sensitive bit positions on another check bit or avoid incorrect transfer, and improve decoding performance of a receive end.
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公开(公告)号：EP4040821A1
公开(公告)日：2022-08-10
申请号：EP21818702.9
申请日：2021-06-07
发明人： LIANG, Dandan , GAN, Ming , YANG, Yang , LEI, Xianfu , LIU, Chenchen , ZHOU, Zhengchun , LIN, Wei , TANG, Xiaohu
摘要： This application provides a method for transmitting a physical layer protocol data unit, including: generating a physical layer protocol data unit (physical protocol data unit, PPDU), where the PPDU includes a long training field (long training field, LTF), a length of a frequency-domain sequence of the LTF is greater than a first length, and the first length is a length of a frequency-domain sequence of an LTF of a PPDU transmitted over a channel whose bandwidth is 160 MHz; and sending the PPDU over a target channel, where a bandwidth of the target channel is greater than 160 MHz. The frequency-domain sequence of the LTF provided in this embodiment of this application considers a phase rotation at a non-pilot location, a plurality of puncturing patterns for 240 MHz/320 MHz, and multiple RU combination, so that a finally provided frequency-domain sequence of the LTF has relatively small PAPR values on multiple RUs in the plurality of puncturing patterns for 240 MHz/320 MHz.
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公开(公告)号：EP4358479A3
公开(公告)日：2024-05-08
申请号：EP23213885.9
申请日：2020-11-13
发明人： LIANG, Dandan , GU, Zhi , LIN, Wei , GAN, Ming , LEI, Xianfu , ZHOU, Zhengchun
CPC分类号： H04L27/262 , H04L27/2613 , H04L27/26134 , H04L25/0226 , H04L5/0048 , H04L5/0007 , H04W84/12
摘要： This application provides a method and apparatus for transmitting a physical layer protocol data unit, so as to design a long training field sequence for a larger channel bandwidth. The method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a long training field, a length of a frequency domain sequence of the long training field is greater than a first length, and the first length is a length of a frequency domain sequence of a long training field of a PPDU transmitted over a channel whose bandwidth is 160 MHz; and sending the PPDU over a target channel, where a bandwidth of the target channel is greater than 160 MHz.
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公开(公告)号：EP4063907A1
公开(公告)日：2022-09-28
申请号：EP20900934.9
申请日：2020-12-18
发明人： LIU, Chenchen , YANG, Yang , LEI, Xianfu , WANG, Yong , DU, Rui , HAN, Xiao , YAN, Min , LIN, Wei
摘要： A data processing method and apparatus, and a device are provided. The method includes: obtaining a sequence set, where the sequence set includes a plurality of sequences, there is at least one first sequence in the plurality of sequences, an auto-ambiguity function of each first sequence is in a drawing pin form, and side lobe energy of a cross-ambiguity function between each first sequence and another sequence in the sequence set is less than a first threshold; and sending a signal based on a sequence in the sequence set, where the signal is used for velocity measurement and/or ranging. In this way, accuracy of performing measurement by a radar is improved.
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公开(公告)号：EP4044540A1
公开(公告)日：2022-08-17
申请号：EP20886354.8
申请日：2020-10-30
发明人： QIAO, Fei , LIN, Wei , YAN, Min , LEI, Xianfu , TANG, Xiaohu
摘要： This application provides a signal transmission method and apparatus, to implement phase tracking in a DFT-S-OFDM system. The method includes: A transmit end determines a guard interval sequence based on a quantity of channel bondings and a quantity of subcarriers corresponding to a resource element of the channel bonding; and then the transmit end sends a signal, where the signal includes the guard interval sequence, and the guard interval sequence is used to determine phase noise of the signal. In other words, in the DFT-S-OFDM system, a guard interval sequence of a sent signal or a received signal is determined based on a quantity of channel bondings and a quantity of subcarriers corresponding to a resource element of the channel bonding, and phase tracking may be implemented in the DFT-S-OFDM system. Therefore, phase noise of the signal can be determined in the DFT-S-OFDM system.
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公开(公告)号：EP4418580A2
公开(公告)日：2024-08-21
申请号：EP24169854.7
申请日：2021-06-07
发明人： LIANG, Dandan , GAN, Ming , YANG,, Yang , LEI, Xianfu , LIU, Chenchen , ZHOU, Zhengchun , LIN, Wei , TANG, Xiaohu
IPC分类号： H04L1/00
CPC分类号： H04W84/12 , H04L27/2613 , H04L27/2614 , H04L27/26132 , Y02D30/70
摘要： This application provides a method for transmitting a physical layer protocol data unit, including: generating a physical layer protocol data unit (physical protocol data unit, PPDU), where the PPDU includes a long training field (long training field, LTF), a length of a frequency-domain sequence of the LTF is greater than a first length, and the first length is a length of a frequency-domain sequence of an LTF of a PPDU transmitted over a channel whose bandwidth is 160 MHz; and sending the PPDU over a target channel, where a bandwidth of the target channel is greater than 160 MHz. The frequency-domain sequence of the LTF provided in this embodiment of this application considers a phase rotation at a non-pilot location, a plurality of puncturing patterns for 240 MHz/320 MHz, and multiple RU combination, so that a finally provided frequency-domain sequence of the LTF has relatively small PAPR values on multiple RUs in the plurality of puncturing patterns for 240 MHz/320 MHz.
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公开(公告)号：EP4152721A1
公开(公告)日：2023-03-22
申请号：EP21817818.4
申请日：2021-05-26
发明人： LIANG, Dandan , GAN, Ming , ZHOU, Zhengchun , LEI, Xianfu , YANG, Yang , TANG, Xiaohu , LIN, Wei , LIU, Chenchen
IPC分类号： H04L29/08
摘要： Embodiments of this application provide a method and an apparatus for transmitting a physical layer protocol data unit, to design a short training field sequence for a larger channel bandwidth. The short training field sequence designed in this application has a smaller peak-to-average power ratio PAPR and better performance. The method includes: generating a physical layer protocol data unit PPDU that complies with the 802.11be standard, where the PPDU includes a short training field, and a quantity of subcarriers of a frequency domain sequence of the short training field is greater than 2048; and sending the PPDU on a target channel, where a bandwidth of the target channel is greater than or equal to 160 MHz.
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