公开(公告)号：US20230198703A1

公开(公告)日：2023-06-22

申请号：US18173671

申请日：2023-02-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Lei Wang ,  Yinggang Du

IPC: H04L5/00

CPC classification number: H04L5/0048

Abstract: A wireless communication method and apparatus. The method includes a terminal obtains a first sequence, and pads or truncates the first sequence to determine a second sequence having a reference signal length; the terminal outputs the second sequence to a network device; the network device receives the second sequence output by the terminal; the network device obtains, based on the second sequence, a third sequence of which a length is a first sequence length 2m; and based on the third sequence, the network device identifies active users and/or performs channel estimation. In the above technical solution, the terminal obtains the second sequence having the reference signal length by padding or truncating the obtained first sequence. The second sequence is output and used for identification of active users and/or channel estimation.

公开(公告)号：US11579777B2

公开(公告)日：2023-02-14

申请号：US17029285

申请日：2020-09-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Siwei Luo ,  Lei Zhang ,  Feng Wang ,  Xin Fang

IPC: G06F3/06 ,  G06F11/10

Abstract: In a method disclosed for writing data, a device receives data, divides the data into one or more data fragments, obtains a first parity fragment based on the one or more data fragments and a second parity fragment of a written data fragment in a stripe distributed across a plurality of nodes, stores the one or more data fragments and the first parity fragment in the stripe.

公开(公告)号：US11558302B2

公开(公告)日：2023-01-17

申请号：US17098030

申请日：2020-11-13

Applicant: Huawei Technologies Co., Ltd. ,  Tsinghua University

Inventor： Yong Cui ,  Lei Zhang ,  Qiaoling Wang

IPC: H04L47/193 ,  H04L1/18 ,  H04L43/0864 ,  H04L43/0882 ,  H04L47/50 ,  H04L47/625 ,  H04L47/10

Abstract: This application provides a data transmission method and apparatus. The method includes: determining a first sending rate based on a network performance objective of first data and a network status of a first transmission control protocol (TCP) connection of a transport layer protocol, where the first TCP connection is used to send the first data; and sending the first data based on the first sending rate. In this way, network congestion control is more flexible, and TCP-based data transmission efficiency is improved.

公开(公告)号：US20210326211A1

公开(公告)日：2021-10-21

申请号：US17362046

申请日：2021-06-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jipeng Liu ,  Lei Zhang ,  Gaoding Fu

IPC: G06F11/14 ,  G06F16/23 ,  G06F13/20

Abstract: In a data backup method performed in a storage system having multiple storage devices, a first storage device having a firs LUN queries data consistency points from a second storage device that has a second LUN which has an active-active relationship with the first LUN. The second storage device obtains the data consistency points based on the IO data status record of the first LUN and an IO data status record of the second LUN stored in the second storage device, and provides the data consistency points to the first storage device. The first storage device then creates a snapshot for the first LUN based on the data consistency points, provides differential data between the current snapshot and a previous snapshot, and stores the differential data in the backup storage device.

公开(公告)号：US20210240578A1

公开(公告)日：2021-08-05

申请号：US17235557

申请日：2021-04-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lei Zhang

IPC: G06F11/14

Abstract: In a data backup method, after data backup is triggered, a backup server sends a change information obtaining request to a file server to request change information of data on the file serve. The backup server receives a data change record returned by a file server, wherein the data change record comprises identification information of a changed data block. The backup server then obtains data according to the data change record, backs up the obtained data, and establishes a data mapping relationship for the current backup. When data of a backup needs to be obtained, data of a corresponding data block is found in the backup storage device according to the data mapping relationship.

公开(公告)号：US20180253359A1

公开(公告)日：2018-09-06

申请号：US15972527

申请日：2018-05-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Gaoding Fu

IPC: G06F11/14 ,  G06F17/30

CPC classification number: G06F11/1464 ,  G06F11/1435 ,  G06F11/1451 ,  G06F11/1469 ,  G06F16/258 ,  G06F16/27 ,  G06F16/955 ,  G06F17/00

Abstract: In a method for implementing data conversion in a cloud data center, a backup server receives a read request from a block storage server. The read request includes a uniform resource locator (URL) address of a to-be-read virtual image object on the backup server and an address range of target data in the to-be-read virtual image object. The backup server obtains an address mapping bitmap and a storage path of backup data in a backup replica corresponding to the to-be-read virtual image object according to the URL address. Thereafter, the backup server obtains the target data from a storage device according to the address range of the target data and the address mapping bitmap and the storage path. Further, the backup server sends the target data to the block storage server. Hence, the conversion time of a backup data object may be shortened.

公开(公告)号：US20170206019A1

公开(公告)日：2017-07-20

申请号：US15479696

申请日：2017-04-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang

IPC: G06F3/06

CPC classification number: G06F3/065 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/067 ,  G06F11/1451 ,  G06F11/1464 ,  G06F11/1469 ,  G06F2201/815 ,  G06F2201/84

Abstract: A data backup method and apparatus, a data restoration method and apparatus, and a server are presented. The backup method includes the following steps of obtaining, by a backup server, an original differential bitmap of a first target volume; obtaining valid data in each fixed-length data block from the first target volume according to the original differential bitmap; saving a bitmap corresponding to a fixed-length data block including the valid data to a fixed-length volume bitmap file of the fixed-length data block according to the original differential bitmap; and saving the valid data in the fixed-length data block to a fixed-length volume file of the fixed-length data block. According to the foregoing solution, only valid data is transmitted, an amount of data transmitted between the production end and the server can be reduced, a transmission speed can be increased, and storage space can be saved.

公开(公告)号：US20160217167A1

公开(公告)日：2016-07-28

申请号：US15087053

申请日：2016-03-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Dong Bao

IPC: G06F17/30 ,  G06F3/06

CPC classification number: G06F16/2228 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/0674 ,  G06F16/2255 ,  G06F16/9024

Abstract: A hash database configuration method and apparatus, where the method includes establishing an index area and a data area on a disk, where the index area includes p disk pages with an equal size, and receiving an allocation request of key-value pairs, allocating m keys in the key-value pairs to disk pages in the index area, and allocating n values in the key-value pairs to the data area, where m, n, and p are all integers greater than 1, and the efficiency of accessing the hash database is improved.

Abstract translation: 一种哈希数据库配置方法和装置，其中所述方法包括在磁盘上建立索引区域和数据区域，其中索引区域包括具有相同大小的p个磁盘页面，并且接收密钥对对的分配请求，分配m 键值对中的键到索引区中的磁盘页，并将键值对中的n个值分配给数据区，其中m，n和p都是大于1的整数，并且访问的效率 哈希数据库得到改进。

公开(公告)号：US20160127678A1

公开(公告)日：2016-05-05

申请号：US14959341

申请日：2015-12-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Zhigang Yao ,  Qingpeng Xie

IPC: H04N7/01 ,  H04N5/14

CPC classification number: H04N7/014 ,  H04N5/145 ,  H04N7/0117 ,  H04N7/0125 ,  H04N7/0127 ,  H04N19/521 ,  H04N19/527 ,  H04N19/567 ,  H04N19/577

Abstract: A method and an apparatus for determining a small-object region in a video frame. The method includes dividing a current video frame into at least two regions, and determining a global motion vector corresponding to each region; determining an interframe motion vector of each group of adjacent frames in multiple video frames that include the current video frame and a reference frame of the current video frame; determining a candidate small-object region in the current video frame according to the interframe motion vector of the each group of adjacent frames and the determined global motion vector corresponding to each region; and performing filtering on the candidate small-object region in the current video frame, and determining a region obtained after the filtering as a small-object region in the current video frame.

Abstract translation: 一种用于确定视频帧中的小对象区域的方法和装置。 该方法包括将当前视频帧划分为至少两个区域，并且确定对应于每个区域的全局运动矢量; 确定包括当前视频帧和当前视频帧的参考帧的多个视频帧中的每组相邻帧的帧间运动矢量; 根据每组相邻帧的帧间运动矢量和对应于每个区域的确定的全局运动矢量，确定当前视频帧中的候选小对象区域; 以及对当前视频帧中的候选小对象区域进行滤波，以及将当前视频帧中的滤波后获得的区域确定为小对象区域。

公开(公告)号：US20150222338A1

公开(公告)日：2015-08-06

申请号：US14687345

申请日：2015-04-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhang ,  Yi Wang ,  Jiayin Zhang ,  Yuqing Zhao

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0452 ,  H04B7/0626 ,  H04L25/03891 ,  H04W72/1226 ,  H04W72/1231

Abstract: The present invention provides a signal transmission method for a multiple-user multiple-input multiple-output system, includes: in a signal sending time slot, sending a signal to user terminals through each antenna via preset subcarriers in a signal sending time slot; sending a first public information signal to the user terminals through each antenna via the preset subcarriers in a public information sending time slot. According to the technical solution provided by the present invention, the problem that signal transmission delay of a multiple-user multiple-input multiple-output system where a channel changes rapidly is too long is solved.

Abstract translation: 本发明提供了一种用于多用户多输入多输出系统的信号传输方法，包括：在信号发送时隙中，通过信号发送时隙中的预设子载波，通过每个天线向用户终端发送信号; 通过公共信息发送时隙中的预设子载波，通过各天线向用户终端发送第一公开信息信号。 根据本发明提供的技术方案，解决了信道快速变化的多用户多输入多输出系统的信号传输延迟太长的问题。