公开(公告)号：US10855415B2

公开(公告)日：2020-12-01

申请号：US16412117

申请日：2019-05-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Le Liu ,  Zhou Lan ,  Yi Luo

IPC: H04L5/00 ,  H04W84/12 ,  H04B1/707 ,  H04L25/02 ,  H04L27/26

Abstract: A transmission device includes: an acquiring unit acquires LTF parameters, and acquires a start position I of allocated subcarriers, where the LTF parameters include a frequency domain transform parameter and a time domain transform parameter that are required for generating an LTF sequence; a frequency domain transform unit performs, according to the frequency domain transform parameter and the start position I, a frequency domain transform on an LTF basic sequence to obtain an LTF symbol; a time domain transform unit performs, according to the time domain transform parameter, a time domain transform on the LTF symbol to obtain the LTF sequence; and a sending unit adds the LTF sequence to a first data frame, and sends the first data frame to a second device, so that the second device determines the LTF basic sequence according to the LTF sequence and performs channel estimation according to the LTF basic sequence.

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：US10750500B2

公开(公告)日：2020-08-18

申请号：US15843300

申请日：2017-12-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ming Gan ,  Meilu Lin ,  Le Liu

IPC: H04W72/04 ,  H04W28/00 ,  H04L5/00 ,  H04B7/0452 ,  H04W72/12 ,  H04L27/26 ,  H04W84/12

Abstract: Embodiments provide a resource scheduling method, which can support reduction of transmission resource overheads in resource scheduling. The method is applied to a wireless local area network, where a next generation protocol followed by the wireless local area network predefines locations of resource units possibly 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 are to indicate whether one or more of said resource unit locations possibly allocated for the to-be-assigned frequency domain resource is\are the actually allocated resource unit(s).

公开(公告)号：US10735233B2

公开(公告)日：2020-08-04

申请号：US16017083

申请日：2018-06-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Genadiy Tsodik ,  Ningjuan Wang ,  Jian Yu ,  Xin Xue ,  Shimon Shilo ,  Doron Ezri ,  Oded Redlich ,  Le Liu ,  Wei Lin

IPC: H04B17/00 ,  H04L27/26 ,  H04L25/02

Abstract: The present application provides a method for determining a CP. A STA performs channel estimation, determines a CP value according to the result of channel estimation, and sends indication information to an AP, wherein the indication information is used for indicating the CP value, so that the AP may choose a suitable CP according to the indication information. Therefore, overhead may be reduced and system throughput may be optimized.

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：US20190289604A1

公开(公告)日：2019-09-19

申请号：US16428457

申请日：2019-05-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ming Gan ,  Meilu Lin ,  Le Liu

IPC: H04W72/04 ,  H04B7/0452 ,  H04W72/12 ,  H04L5/00 ,  H04W28/00

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.

公开(公告)号：US10389565B2

公开(公告)日：2019-08-20

申请号：US15594185

申请日：2017-05-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Lin ,  Le Liu ,  Sergio Benedetto ,  Guido Montorsi ,  Weishan Lu

IPC: H04W4/00 ,  H04L27/26 ,  H04L12/801 ,  H04W72/04 ,  H04L1/00 ,  H04W84/12 ,  H04L1/04

Abstract: Embodiments of the present disclosure provide an interleaving processing method and device in a WLAN system. The apparatus includes: a bit parsing unit, configured to allocate bits in a coded data stream to n sub resource block interleaving units according to a specific sequence, where n is a positive integer greater than 1, and a value of n is a quantity of resource blocks allocated to the user; and the sub resource block interleaving units, configured to perform discrete interleaving on input bits. According to the foregoing apparatus and method, system performance can be improved.

公开(公告)号：US20180331876A1

公开(公告)日：2018-11-15

申请号：US15987216

申请日：2018-05-23

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Wei Lin ,  Xin Xue ,  Ningjuan Wang ,  Le Liu

IPC: H04L27/26 ,  H04W72/12 ,  H04W24/10

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 1× 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.

公开(公告)号：US20180183548A1

公开(公告)日：2018-06-28

申请号：US15904031

申请日：2018-02-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ming Gan ,  Le Liu ,  Yunbo Li

IPC: H04L1/16 ,  H04W28/06

Abstract: A receiving state indication method for an aggregate-media access control (MAC) protocol data unit (A-MPDU) and a receiving device in order to indicate a receiving state of the A-MPDU including a MAC service data unit (MSDU) fragment, where the method includes receiving, by a receive end, the A-MPDU from a transmit end, and sending, by the receive end to the transmit end, an acknowledgement frame indicating a receiving state of the A-MPDU when at least one MPDU in the A-MPDU is obtained by encapsulating the fragment of the MSDU, where the acknowledgement frame includes a fragment indication field and a receiving state field.

公开(公告)号：US20170251458A1

公开(公告)日：2017-08-31

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

IPC: H04W72/04 ,  H04L27/26 ,  H04L1/00 ,  H04W72/12

CPC classification number: H04W72/042 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/2602 ,  H04W72/00 ,  H04W72/1289 ,  H04W84/12

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.