公开(公告)号：US10972977B2

公开(公告)日：2021-04-06

申请号：US16588454

申请日：2019-09-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Lin ,  Le Liu ,  Jun Zhu ,  Weishan Lu

IPC: H04W52/02 ,  H04L5/00 ,  H04L27/26 ,  H04W84/12

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.

公开(公告)号：US10863375B2

公开(公告)日：2020-12-08

申请号：US16051518

申请日：2018-08-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhengzheng Xiang ,  Jiyong Pang ,  Sheng Liu ,  Jun Zhu

IPC: H04W24/10 ,  H04W24/08 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04L29/06 ,  H04W72/04

Abstract: A method includes: sending, by an access point AP, a channel measurement trigger frame TF-S to at least two stations STAs, where the TF-S is used to trigger the at least two STAs to send null data packets NDPs used for uplink channel measurement, the TF-S includes parameter indication information of a transmission parameter used by each STA to send theNDP, and the parameter indication information is used by the STA to determine the transmission parameter and a transmission time; and receiving, by the AP, an NDP sent by each of the at least two STAs based on a corresponding transmission parameter of the STA at a transmission time corresponding to the STA, and performing channel measurement, where there is no interframe gap between NDPs sent by any two adjacent STAs of the at least two STAs.

公开(公告)号：US10819478B2

公开(公告)日：2020-10-27

申请号：US16028884

申请日：2018-07-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun Zhu ,  Jiayin Zhang ,  Jiyong Pang ,  Le Liu

IPC: H04W4/00 ,  H04L5/00 ,  H04L27/26 ,  H04W52/28 ,  H04L25/02 ,  H04W84/12

Abstract: Embodiments of the present invention provide an extended range SU mode PPDU transmission method and apparatus. The method comprises: generating an extended range SU mode PPDU, wherein a legacy preamble part in the extended range SU mode PPDU is transmitted by using a bandwidth of 20 MHz, a data part in the extended range SU mode PPDU is transmitted by using a narrowband, and a bandwidth in the narrowband transmission comprises at least one of the following parameters: a 26-tone RU, a 52-tone RU, a 106-tone RU, or a 242-tone RU; and sending the extended range SU mode PPDU. By applying the method and the apparatus in the embodiments of the present invention, transmission reliability of the data part is improved, performance of parts in the PPDU in an EXT SU mode is more balanced, and a coverage area of long-distance transmission is ensured.

公开(公告)号：US10743185B2

公开(公告)日：2020-08-11

申请号：US16031700

申请日：2018-07-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhengzheng Xiang ,  Jiyong Pang ,  Jun Zhu

IPC: H04L12/28 ,  H04W16/10 ,  H04W74/08 ,  H04W72/04 ,  H04W72/08 ,  H04W74/00

Abstract: Embodiments of the present invention provide a data transmission method and an apparatus. In the method, a communications node receives N spatial reuse parameters SRPs; the communications node determines, based on the received N SRPs, that the communications node can perform spatial reuse link transmission; and the communications node transmits data by using a spatial reuse link, and processes data transmission based on the spatial reuse link. Whether spatial reuse link transmission can be performed is determined based on the received SRPs, so as to reduce mutual interference between a primary link and the spatial reuse link during data transmission, and improve transmission quality.

公开(公告)号：US10523396B2

公开(公告)日：2019-12-31

申请号：US16362603

申请日：2019-03-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meilu Lin ,  Ming Gan ,  Le Liu ,  Jun Zhu ,  Jian Yu

IPC: H04L5/00 ,  H04W28/06 ,  H04W28/18 ,  H04W72/12 ,  H04W84/12 ,  H04W72/04 ,  H04W74/00

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.

公开(公告)号：US20190356454A1

公开(公告)日：2019-11-21

申请号：US16529281

申请日：2019-08-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun Zhu ,  Osama Aboul-Magd ,  Jung Hoon Suh ,  Meilu Lin

IPC: H04L5/00 ,  H04L1/00 ,  H04L27/34 ,  H04W52/26 ,  H04W72/04

Abstract: A method for operating a transmitting device using semi-orthogonal multiple access (SOMA) in a wireless local area network (WLAN) includes determining a first quadrature amplitude modulation (QAM) bit allocation, a first coding rate, and a first SOMA group for a first receiving device and a second QAM bit allocation, a second coding rate, and a second SOMA group for a second receiving device in accordance with channel information associated with the first receiving device and the second receiving device, generating a frame including indicators of the first and second QAM bit allocations, the first and second coding rates, and the first and second SOMA groups, and sending the frame to the first receiving device and the second receiving device.

公开(公告)号：US10470223B2

公开(公告)日：2019-11-05

申请号：US15221241

申请日：2016-07-27

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Yalin Liu ,  Peter Loc ,  Xun Yang ,  Jun Zhu

IPC: H04W76/10 ,  H04L5/00 ,  H04L27/26 ,  H04W40/24 ,  H04W72/04 ,  H04W84/12 ,  H04W88/08

Abstract: The present invention provides a data transmission method and a communications device. The communications device includes: a transceiver, configured to send a transmission frame to a second communications device, so that the second communications device acquires data information in the transmission frame, where the transmission frame includes a first part and a second part, the transceiver sends the first part of the transmission frame by using a first quantity of subcarriers, the transceiver sends the second part of the transmission frame by using a second quantity of subcarriers, and the first quantity is not equal to the second quantity; and the transceiver, further configured to perform a next time of information transmission with the second communications device. A throughput can be effectively increased.

公开(公告)号：US10264599B2

公开(公告)日：2019-04-16

申请号：US15249795

申请日：2016-08-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiayin Zhang ,  Jun Zhu ,  Yingpei Lin ,  Xun Yang

IPC: H04W4/00 ,  H04W72/12 ,  H04W74/00 ,  H04W84/12

Abstract: A method comprises constructing, by an access point (AP), a radio frame within a scheduling window, the radio frame including at least a preamble part compatible with an existing IEEE 802.11 preamble legacy preamble, a preamble part used in a next-generation IEEE 802.11 standard (HEW preamble), and the first downlink subframe (DL subframe); sending the Legacy preamble, the HEW preamble and the first DL subframe in the radio frame; receiving at least one uplink subframe (UL subframe) located after the first DL subframe; wherein each of the at least one UL subframes is triggered by one DL subframe located before the UL subframe.

公开(公告)号：US10187242B2

公开(公告)日：2019-01-22

申请号：US15280016

申请日：2016-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yang Yang ,  Xiaohu Tang ,  Yalin Liu ,  Jun Zhu

IPC: H04L27/26 ,  H04L7/04 ,  H04W52/52 ,  H04W84/12

Abstract: Embodiments of the present invention provide a signal transmission method and apparatus, which can implement fast initial time synchronization. The method includes: generating, by a transmit-end device, an initial short training sequence, where the initial short training sequence includes M sub-sequences b, and the sub-sequence b includes N transmission sampling points; determining a quantity of reception sampling points used by a receive-end device when the receive-end device performs autocorrelation processing; generating a symbol sequence according to the quantity of the reception sampling points, and generating a target short training sequence according to the symbol sequence and the initial short training sequence; and sending a target signal to the receive-end device, where a short training sequence field of the target signal carries a short training sequence symbol, and the short training sequence symbol is used to indicate the target short training sequence.

公开(公告)号：US10178698B2

公开(公告)日：2019-01-08

申请号：US16029065

申请日：2018-07-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Mohamed Adel Salem ,  Jun Zhu

IPC: H04B15/00 ,  H04W74/08 ,  H04W72/06 ,  H04B17/309 ,  H04W72/04 ,  H04W16/14

Abstract: A method for dynamically dividing or consolidating sub-bands in-between Clear Channel Assessment (CCA) status measurements upon detection of a CCA bandwidth adjustment condition is provided. The method includes determining at least a single CCA status for at least a single sub-band during a first period, and detecting a CCA bandwidth adjustment condition for dividing the single sub-band into two or more separate sub-bands, where a combination of the two or more separate sub-bands occupies the same frequency band as the single sub-band. The method also includes determining a separate CCA status for each of the two or more separate sub-bands during a second period. An apparatus for performing this method is also provided.