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公开(公告)号:US20230336396A1
公开(公告)日:2023-10-19
申请号:US18309575
申请日:2023-04-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Wei Lin , Xin Xue , Ningjuan Wang , Le Liu
CPC classification number: H04L27/2672 , H04L25/022 , H04L25/0226 , H04L27/261 , H04L27/2614 , H04W24/10 , H04W72/1268 , H04W72/23 , H04W84/12 , H04B7/0452
Abstract: An HE-LTF transmission method is provided, including: determining, based on a total number NSTS of space-time streams, a number NHELTF of OFDM symbols included in an HE-LTF field; determining a HE-LTF sequence in frequency domain according to a transmission bandwidth and a mode of the HE-LTF field, where the HE-LTF sequence in frequency domain includes but is not limited to a mode of the HE-LTF field sequence that is in a 1x mode and that is mentioned in implementations; and sending a time-domain signal according to the number NHELTF of OFDM symbols and the determined HE-LTF sequence in frequency domain. In the foregoing solution, a PAPR value is relatively low.
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52.
公开(公告)号:US20230189332A1
公开(公告)日:2023-06-15
申请号:US18166763
申请日:2023-02-09
Applicant: Huawei Technologies Co., Ltd.
Inventor: Yingpei Lin , Jiayin Zhang , Jun Luo , Le Liu
CPC classification number: H04W74/04 , H04L5/0053 , H04L5/0092 , H04L9/40 , H04L69/22 , H04W72/23 , H04W72/0453 , H04W48/12
Abstract: A method includes generating, by an apparatus, a physical protocol data unit (PPDU) for a downlink multiple-user transmission, wherein the PPDU includes: a legacy preamble, a high efficiency Wi-Fi Signaling Field 1 (HEW-SIG1), a high efficiency Wi-Fi Signaling Field 2 (HEW-SIG2), adjacent to the HEW-SIG1, and a data portion, and wherein the HEW-SIG1 comprises a HEW-SIG2 modulation and coding scheme (HEW-SIG2 MCS) field, the HEW-SIG2 MCS field indicates a transmission modulation and coding scheme (MCS) used to transmit the HEW-SIG2, the HEW-SIG1 further comprises a frame structure indication field, and the frame structure indication field indicates whether a frame structure of a scheduling transmission is an uplink structure or a downlink structure, and the HEW-SIG2 comprises resource indication information; and sending, by the apparatus, the PPDU.
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公开(公告)号:US11553428B2
公开(公告)日:2023-01-10
申请号:US17187321
申请日:2021-02-26
Applicant: Huawei Technologies Co., Ltd.
Inventor: Wei Lin , Le Liu , Jun Zhu , Weishan Lu
Abstract: The disclosure discloses a high-efficiency short training field sequence generation method, a signal sending method, a signal receiving method, and related apparatuses, where the high-efficiency short training sequence generation method includes: increasing frequency domain density of a frequency domain sequence corresponding to a first high-efficiency short training field sequence to generate a frequency domain sequence with increased frequency domain density; generating a second high-efficiency short training field sequence according to the frequency domain sequence with increased frequency domain density; and using the second high-efficiency short training field sequence as a high-efficiency short training field sequence in a preamble sequence of a data transmission frame in a wireless local area network WLAN. In embodiments of the disclosure, a cycle of a high-efficiency short training field sequence used for performing stage-2 AGC adjustment in the WLAN may be increased, and a maximum CSD value that can be used is further increased.
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公开(公告)号:US20220407752A1
公开(公告)日:2022-12-22
申请号:US17683103
申请日:2022-02-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Xin Xue , Ningjuan Wang , Le Liu , Wei Lin
Abstract: Embodiments of the present invention provide several long training sequences that are in a wireless local area network and that comply with 802.11ax.
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公开(公告)号:US11075717B2
公开(公告)日:2021-07-27
申请号:US16747368
申请日:2020-01-20
Applicant: Huawei Technologies Co., Ltd.
Abstract: A receiving state indication method for an aggregate-media access control (MAC) protocol data unit (A-MPDU) and a receiving device, to indicate a receiving state of an A-MPDU including a MAC service data unit (MSDU) fragment. The method includes receiving, by a receive end, an A-MPDU sent by a transmit end; and when determining that at least one MAC protocol data unit (MPDU) in the A-MPDU is obtained by encapsulating a fragment of an MSDU, sending, by the receive end to the transmit end, an acknowledgement frame used to indicate a receiving state of the A-MPDU, where the acknowledgement frame includes a fragment indication field and a receiving state field.
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56.
公开(公告)号:US20200351939A1
公开(公告)日:2020-11-05
申请号:US16932333
申请日:2020-07-17
Applicant: Huawei Technologies Co., Ltd.
Inventor: Yingpei Lin , Jiayin Zhang , Jun Luo , Le Liu
Abstract: The method includes generating, by an access point (AP), signaling that includes an AP identifier (ID) field, a bandwidth (BW) field, a guard interval (GI) field, a cyclic redundancy check (CRC) field, and a tail field, the AP ID field is used to indicate an ID of the AP, the BW field is used to indicate bandwidth required for data transmission subsequent to the signaling, the GI is used to indicate a length of a cyclic prefix (CP) required for data transmission subsequent to the signaling, the CRC field is used to guard a field before the CRC field in the signaling, and the Tail field is used to empty an encoder and a decoder, where the CRC field and the Tail field are the last two fields of the signaling. The method also includes sending, by the AP, the signaling.
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公开(公告)号:US10568100B2
公开(公告)日:2020-02-18
申请号:US16365041
申请日:2019-03-26
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Abstract: Embodiments provide resource scheduling methods and apparatus that reduce transmission resource overhead in resource scheduling. The method can be applied to a wireless local area network, where a next generation protocol followed by the wireless local area network predefines locations of resource units potentially allocated from a to-be-assigned frequency domain resource. The method includes: generating, by a sending end, resource scheduling information, where the resource scheduling information includes a bit sequence to indicate an actual allocation of a resource unit(s) from the to-be-assigned frequency domain resource, and at least some bits in the bit sequence to indicate whether one or more of the resource unit locations potentially allocated for the to-be-assigned frequency domain resource are the actually allocated resource units.
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58.
公开(公告)号:US10448383B2
公开(公告)日:2019-10-15
申请号:US15593533
申请日:2017-05-12
Applicant: Huawei Technologies Co., Ltd.
Inventor: Jun Luo , Jiayin Zhang , Yingpei Lin , Phillip Barber , Le Liu , Sheng Liu
Abstract: A resource indication method in a wireless local area network is provided, where the method includes generating, by an access point, a data frame that includes a preamble, where the preamble includes a signaling indication part B (SIG-B), the SIG-B includes a common part and a user part following the common part. The common part is used to indicate a quantity of scheduled stations, identification information of the scheduled station, and a location of communication resource information of the scheduled station in the user part, the user part is used to indicate the communication resource information of the scheduled station, and the communication resource information includes resource indication information, MCS information of a data part, spatial flow quantity information, or power control information; and sending the data frame.
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公开(公告)号:US20190222393A1
公开(公告)日:2019-07-18
申请号:US16362607
申请日:2019-03-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
CPC classification number: H04L5/0053 , H04L5/00 , H04L5/0005 , H04L5/0007 , H04L5/0037 , H04L5/0091 , H04W28/06 , H04W28/18 , H04W72/0446 , H04W72/121 , H04W72/1289 , H04W74/006 , H04W84/12
Abstract: A method for sending a wireless local area network packet structure is provided, and the method comprises: determining a packet structure, where the packet structure comprises an HE-SIGA and an HE-SIGB, the HE-SIGA comprises an indication information, and if a current transmission mode is a full bandwidth MU-MIMO transmission, the indication information is used to indicate a number of scheduled users, or if the current transmission mode is other transmission mode, the indication information is used to indicate a number of symbols in the HE-SIGB; and sending the packet structure.
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公开(公告)号:US10211958B2
公开(公告)日:2019-02-19
申请号:US15417970
申请日:2017-01-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Weishan Lu , Doron Ezri , Le Liu
IPC: H04L5/00 , H04B7/0452 , H04W72/04 , H04L25/02 , H04L27/26
Abstract: A method for transmitting information, a station, and an access point in a MU-MIMO system includes: determining, by a first station, multiple to-be-sent first long training sequences, where the multiple first long training sequences include at least one pilot for phase tracking; and sending, by the first station, the multiple first long training sequences to an access point on multiple symbols, where a second station sends multiple second long training sequences to the access point on the multiple symbols, the multiple second long training sequences include at least one pilot for phase tracking, and a first pilot for phase tracking and a second pilot for phase tracking occupy different time-frequency resources, where the at least one pilot for phase tracking included in the multiple first long training sequences includes the first pilot for phase tracking.
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