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公开(公告)号：US11172372B2
公开(公告)日：2021-11-09
申请号：US16749477
申请日：2020-01-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tao Wu , Teyan Chen
Abstract: An information transmission method and apparatus, the method including determining, by a first communications apparatus, an area in which a terminal device is located, where the area includes overlapping coverage area between the first communications apparatus and at least one second communications apparatus, and, non-overlapping coverage area between the first communications apparatus and the at least one second communications apparatus, and the first communications apparatus is adjacent to the at least one second communications apparatus, and sending, by the first communications apparatus, information to the terminal device through a first channel if the terminal device is located in the overlapping coverage area, and sending, by the first communications apparatus, information to the terminal device through a second channel if the terminal device is located in the non-overlapping coverage areas.
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公开(公告)号：US11160039B2
公开(公告)日：2021-10-26
申请号：US15061831
申请日：2016-03-04
Applicant: Huawei Technologies Co., Ltd.
Abstract: A method is described for providing extended wireless coverage. The method includes transmitting, by a station (STA), at least a first frame including one or more short training fields (STFs) and a legacy STF, each of the one or more STFs carrying a sequence of symbols that is orthogonal to a sequence of symbols carried by the legacy STF.
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公开(公告)号：US11018913B2
公开(公告)日：2021-05-25
申请号：US16588541
申请日：2019-09-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tao Wu , Teyan Chen
Abstract: This application provides a multichannel-based signal transmission method and apparatus. The method includes: combining N groups of lower-order modulation symbols into N groups of higher-order modulation symbols, where an ith higher-order modulation symbol in each group of higher-order modulation symbols is obtained by combining ith lower-order modulation symbols in all the N groups of lower-order modulation symbols, each group of lower-order modulation symbols includes M lower-order modulation symbols, i=1, 2, . . . , M, N is a positive integer greater than 1, and M is a positive integer greater than 1; determining N to-be-sent signals based on the N groups of higher-order modulation symbols; and sending a kth to-be-sent signal in the N to-be-sent signals by using a kth channel in N channels, where k=1, 2, . . . , N.
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公开(公告)号：US10819553B2
公开(公告)日：2020-10-27
申请号：US16546159
申请日：2019-08-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tao Wu
Abstract: Embodiments of the present invention provide a data transmission method and apparatus, and the method includes: modulating to-be-sent information bits according to a lower order constellation diagram, and generating 4m lower order modulation symbols; multiplying a precoding matrix Q by a column vector including every four lower order modulation symbols in the 4m lower order modulation symbols, to obtain 4m to-be-sent higher order modulation symbols corresponding to a higher order constellation diagram; and respectively and correspondingly sending the 4m to-be-sent higher order modulation symbols on different carriers of two antennas. The to-be-sent higher order modulation symbols include some or all to-be-sent information bits. Therefore, the same signal can be simultaneously sent on different carriers of multiple antennas, and frequency diversity and space diversity are implemented, so that transceiving performance of data transmission is improved.
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公开(公告)号：US10425207B2
公开(公告)日：2019-09-24
申请号：US15617913
申请日：2017-06-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tao Wu
Abstract: Embodiments of the present invention provide a pilot transmission method, a station, and an access station. The method includes: receiving, by a station, a pilot transmission notification, where the pilot transmission notification includes a pilot transmission rule of the station and a pilot transmission rule of another station on a group of continuous subcarriers; the pilot transmission rule of the station includes: the group of continuous subcarriers is divided into two subcarrier groups, pilots transmitted on subcarriers in a same subcarrier group have a same amplitude and a same phase, and pilots transmitted on subcarriers in different subcarrier groups have a same amplitude but inverse phases, and the pilot transmission rule of the another station includes: pilots transmitted on all subcarriers have a same amplitude and a same phase; and transmitting, by the station, a pilot according to the pilot transmission rule of the station.
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Patent Agency Ranking
公开(公告)号：US20190149375A1
公开(公告)日：2019-05-16
申请号：US16246761
申请日：2019-01-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tao Wu , Teyan Chen
IPC: H04L27/20
Abstract: This application provides a multichannel-based signal transmission method and apparatus. The method includes: combining N groups of lower-order modulation symbols into N groups of higher-order modulation symbols, where an ith higher-order modulation symbol in each group of higher-order modulation symbols is obtained by combining ith lower-order modulation symbols in all the N groups of lower-order modulation symbols, each group of lower-order modulation symbols includes M lower-order modulation symbols, i=1, 2, . . . , M, N is a positive integer greater than 1, and M is a positive integer greater than 1; determining N to-be-sent signals based on the N groups of higher-order modulation symbols; and sending a kth to-be-sent signal in the N to-be-sent signals by using a kth channel in N channels, where k=1, 2, . . . , N.
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47.发明授权公开(公告)号：US10187239B2
公开(公告)日：2019-01-22
申请号：US15140697
申请日：2016-04-28
Applicant: Huawei Technologies Co., Ltd.
Abstract: It is possible to reduce the PAPR of an amplified signal communicated over bonded channels by applying different phase shifts to control fields communicated over the bonded channels. The phase shifts reduce the amount of constructive interaction between the control fields by shifting the peaks of the respective signals in the time domain. The control fields may include short training fields (STFs), channel estimation (CE) fields, or header fields communicated over bonded channels.
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公开(公告)号：US20170338989A1
公开(公告)日：2017-11-23
申请号：US15674154
申请日：2017-08-10
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H04L27/2621 , H04L5/0053 , H04L27/262 , H04L27/2627 , H04W84/12
Abstract: A peak-to-average ratio reduction method, including dividing subcarriers of an orthogonal frequency division multiplexing (OFDM) symbol that carries to-be-transmitted data to obtain multiple blocks, determining multiple phase factors corresponding to the multiple blocks, where the multiple phase factors reduce a peak-to-average ratio of the OFDM symbol, transmitting the multiple phase factors using a particular subcarrier of the OFDM symbol, multiplying data transmitted on each block in the multiple blocks by a corresponding phase factor, and transmitting data obtained by means of multiplication. Phase factor information of each block is transmitted using the particular subcarrier such that application of a partial transmit sequence (PTS) method in a WI-FI system becomes possible, thereby effectively reducing a peak-to-average power ratio (PAPR) of data.
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49.发明授权公开(公告)号：US12218879B2
公开(公告)日：2025-02-04
申请号：US18475022
申请日：2023-09-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ming Gan , Shimon Shilo , Leonid Epstein , Oded Redlich , Xun Yang , Tao Wu
Abstract: A radio physical layer protocol data unit (PPDU) sending method includes: obtaining, a radio physical layer protocol data unit (PPDU), wherein the PPDU includes a high efficiency-signal field A (HE-SIG-A) and a high efficiency-signal field B (HE-SIG-B), the HE-SIG-A includes a field indicating a quantity of orthogonal frequency division multiplexing (OFDM) symbols in the HE-SIG-B, and wherein a value of the field indicates one of the following: that the quantity of OFDM symbols included in the HE-SIG-B is greater than or equal to 16, or the quantity of OFDM symbols included in the HE-SIG-B; and sending the PPDU.
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公开(公告)号：US20240056399A1
公开(公告)日：2024-02-15
申请号：US18494436
申请日：2023-10-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tao Wu , Jian Yan , Bingquan Wang , Lei Han , Xiangyu Gong , Huafeng Wen
CPC classification number: H04L47/30 , H04L47/6215
Abstract: A first communication apparatus obtains a sampling cycle. The sampling cycle is a time interval at which the first communication apparatus samples occupancy of a first buffer. The first buffer is used to store a data packet of a first priority. The first communication apparatus determines occupancy of the first buffer at a first sampling moment based on the sampling cycle. The first communication apparatus determines first duration based on the sampling cycle and the occupancy of the first buffer at the first sampling moment. The first duration is duration for which a second communication apparatus stops sending data to the first communication apparatus. The first communication apparatus sends first indication information to the second communication apparatus based on the first duration.
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