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公开(公告)号：US20240039668A1
公开(公告)日：2024-02-01
申请号：US18476348
申请日：2023-09-28
发明人： Minghui Xu , Fengwei Liu , Xi Zhang
IPC分类号： H04L5/00
CPC分类号： H04L5/0048 , H04L5/0007
摘要： This application provides a method and an apparatus for determining a phase tracking reference signal (PTRS) pattern. The method includes: A terminal device receives first scheduled bandwidth threshold information from a network device, where a first scheduled bandwidth threshold indicated by the first scheduled bandwidth threshold information meets a first condition, and the first condition is that a ratio of a total quantity of modulation symbols in a PTRS pattern determined based on the first scheduled bandwidth threshold to a quantity of subcarriers in scheduled bandwidth is less than or equal to a first threshold; and determines a PTRS pattern on one orthogonal frequency division multiplexing (OFDM) symbol in an OFDM signal based on the scheduled bandwidth threshold. In this application, the network device configures, for the terminal device, the scheduled bandwidth threshold that meets the first condition, to ensure demodulation performance of the device.
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公开(公告)号：US11792685B2
公开(公告)日：2023-10-17
申请号：US17721593
申请日：2022-04-15
发明人： Minghui Xu , Xi Zhang
摘要： This application discloses a method, including: determining, by a network device, at least one modulation and coding scheme (MCS) threshold; sending, by the network device to a terminal device, the at least one MCS threshold; wherein the at least one MCS threshold and a maximum MCS threshold are associated with a first MCS table corresponding to a highest modulation scheme supported by the terminal device; wherein the highest modulation scheme supported by the terminal device is 64 QAM, and the maximum MCS threshold is 29; or the highest modulation scheme supported by the terminal device is 256 QAM, and the maximum MCS threshold is 28.
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公开(公告)号：US11616665B2
公开(公告)日：2023-03-28
申请号：US17490907
申请日：2021-09-30
发明人： Xi Zhang , Minghui Xu
IPC分类号： H04L25/02 , H04L5/00 , H04L1/00 , H04W72/0446
摘要： This application discloses a communication method and a communications apparatus. The method includes: determining, by a first device, a phase tracking reference signal PTRS pattern, where the PTRS pattern includes one or more PTRS chunks, and each PTRS chunk includes one or more PTRS samples; and mapping, by the first device, a PTRS to one or more symbols, and sending the one or more symbols to a second device.
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公开(公告)号：US11277218B2
公开(公告)日：2022-03-15
申请号：US16688212
申请日：2019-11-19
发明人： Xi Zhang , Minghui Xu , Huang Huang
摘要： This application discloses a resource unit setting method, a resource unit transmission method, and an apparatus. The method includes: setting, by a transmit end device based on a setting threshold of a null resource unit and/or a scheduling parameter, a plurality of null resource units at time domain and/or frequency domain locations associated with phase tracking reference signal resource units of one or more OFDM symbols; and sending, by the transmit end device, the one or more OFDM symbols. The corresponding apparatus is further disclosed. In the technical solution of this application, the null resource unit is set based on the setting threshold of the null resource unit and/or the scheduling parameter. Demodulation accuracy of a high-frequency communications system is ensured, and overheads of the null resource unit are as low as possible, thereby improving spectrum efficiency.
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公开(公告)号：US10098012B2
公开(公告)日：2018-10-09
申请号：US15413911
申请日：2017-01-24
发明人： Jia He , Ziming Yu , Minghui Xu
摘要： A communications device in a high-frequency system, including: a scan module, configured to use a single beam for each space S region in a to-be-scanned sector of a cell to poll or cover all time T regions in the S region in a time-division manner, and send a synchronization sequence to user equipment in the T region by using a preset frame structure; and a determining module, configured to receive a sequence that is fed back by the user equipment, determine a location of the user equipment according to the sequence, and determine, according to the location of the user equipment, a serving beam for a base station to communicate with the user equipment, to confirm that scanning for the user equipment is completed. The embodiments of the present invention further provide a scanning method in a high-frequency system.
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公开(公告)号：US20240214253A1
公开(公告)日：2024-06-27
申请号：US18597437
申请日：2024-03-06
发明人： Fengwei Liu , Minghui Xu , Jiayin Zhang
IPC分类号： H04L27/26
CPC分类号： H04L27/2607 , H04L27/26025
摘要： A communication method and apparatus are provided. A terminal obtains first information and second information, the first information is used to determine a length of a first-type symbol component, the second information is used to determine at least one of a length of a second-type symbol component and a length of a third-type symbol component, and the length of the first-type symbol component is greater than the length of the third-type symbol component. The terminal determines a plurality of signal blocks based on the first information and the second information, and processes each of the plurality of signal blocks to obtain an OFDM symbol corresponding to the signal block and sends the OFDM symbol.
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公开(公告)号：US11611418B2
公开(公告)日：2023-03-21
申请号：US17402346
申请日：2021-08-13
发明人： Xi Zhang , Fengwei Liu , Lei Chen , Minghui Xu
摘要： A PTRS processing method includes: receiving, by a terminal, first indication information and second indication information from a network device, where the first indication information is used to indicate a time-domain location at which a PTRS is to be sent by the terminal, and the second indication information is used to indicate an offset of an initial time-domain location to which the PTRS is mapped by the terminal; mapping, by the terminal, the PTRS to one or more DFT-s-OFDM symbols based on the first indication information and the second indication information; and sending, by the terminal, the one or more DFT-s-OFDM symbols. In this way, the PTRS mapped to the DFT-s-OFDM symbol is offset at a DFT-s-OFDM symbol level.
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公开(公告)号：US11171812B2
公开(公告)日：2021-11-09
申请号：US16674261
申请日：2019-11-05
发明人： Xi Zhang , Minghui Xu
摘要： A communication method includes: determining, by a first device, a phase tracking reference signal (PTRS) pattern, where the PTRS pattern includes one or more PTRS chunks, and each PTRS chunk includes one or more PTRS samples; and mapping, by the first device, a PTRS to one or more symbols, and sending the one or more symbols to a second device.
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公开(公告)号：US10743197B2
公开(公告)日：2020-08-11
申请号：US16057488
申请日：2018-08-07
发明人： Jia He , Ziming Yu , Minghui Xu
摘要： A communications device in a high-frequency system, including: a scan module, configured to use a single beam for each space S region in a to-be-scanned sector of a cell to poll or cover all time T regions in the S region in a time-division manner, and send a synchronization sequence to user equipment in the T region by using a preset frame structure; and a determining module, configured to receive a sequence that is fed back by the user equipment, determine a location of the user equipment according to the sequence, and determine, according to the location of the user equipment, a serving beam for a base station to communicate with the user equipment, to confirm that scanning for the user equipment is completed. The embodiments of the present invention further provide a scanning method in a high-frequency system.
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公开(公告)号：US10461835B2
公开(公告)日：2019-10-29
申请号：US15826656
申请日：2017-11-29
发明人： Huang Huang , Xianfeng Du , Minghui Xu
IPC分类号： H04B7/08 , H04B17/309 , H04B7/06 , H04W56/00 , H04W72/02 , H04W72/04 , H04W72/12 , H04W72/08
摘要： Embodiments of the present application disclose a communication method, including: performing, by a base station, beam scanning and alignment together with first terminal in a first subframe, to determine a beam that is used for sending data in the first subframe; and sending, by the base station, beam information of the beam used for sending data, where the beam information includes at least identification information of the beam and a synchronization signal, the synchronization signal is used by second terminal to synchronize with the base station, and the identification information of the beam is used by the first terminal and the second terminal to identify the beam sent by the base station. According to the present application, a time for scanning and alignment can be reduced, so as to facilitate quick access of a user that is to perform access.
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