公开(公告)号：US20220326532A1

公开(公告)日：2022-10-13

申请号：US17850718

申请日：2022-06-27

Applicant: Huawei Technologies Co., Ltd. ,  Beijing Institute of Technology

Inventor： Juan LIU ,  Zhihao XING ,  Xinhui DUAN

IPC: G02B27/01 ,  G02B27/10 ,  G02B27/42 ,  G02B5/32

Abstract: A diffractive image combiner is provided, to increase an exit pupil dimension, thereby improving user experience. The diffractive image combiner includes a first diffractive optical element DOE and a second diffractive optical element DOE. The first diffractive optical element DOE is parallel to the second diffractive optical element DOE. A grating vector of a first incidence point in the first diffractive optical element DOE is the same as a grating vector of a second incidence point in the second diffractive optical element DOE. The first incidence point is used to convert an incident light ray that meets a Bragg condition into a first diffracted light ray and a first transmitted light ray. The first transmitted light ray is incident to the second incidence point. The second incidence point is used to convert the first transmitted light ray into a second diffracted light ray.

公开(公告)号：US20190273545A1

公开(公告)日：2019-09-05

申请号：US16415409

申请日：2019-05-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhihao XING

IPC: H04B7/06 ,  H04L1/00 ,  H04B17/309 ,  H04W48/16 ,  H04W24/10

Abstract: Relating to the field of communications technologies, an embodiment of the present invention discloses an 802.11 network-based CSI obtaining method and apparatus, so as to provide a CSI obtaining mechanism that addresses a positioning requirement, to improve accuracy of a terminal positioning process by providing more comprehensive CSI for a terminal. An embodiment of the present invention is applicable to a CSI collecting process.

公开(公告)号：US20190253184A1

公开(公告)日：2019-08-15

申请号：US16394480

申请日：2019-04-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhihao XING

IPC: H04L1/00 ,  H04W72/04 ,  H04W24/10 ,  H04W80/10

CPC classification number: H04L1/0026 ,  H04B7/06 ,  H04L1/0061 ,  H04L1/06 ,  H04L5/00 ,  H04W24/10 ,  H04W72/0446 ,  H04W80/10

Abstract: This application relates to the field of communications technologies, and provides a channel state information measurement method and apparatus, so that a receiver can measure CSI without joining a network of a WiFi transmitter. The method includes: sending, by a CSI request apparatus, a first CREQ frame, a group of session parameters used to transmit a CS frame,; receiving, by the CSI request apparatus, a CRSP frame sent by a first CSI response apparatus,; receiving, by the CSI request apparatus, the CS frame by using the first session parameter; and measuring, by the CSI request apparatus, the CS frame to obtain CSI. The method is applied to a scenario of positioning or a scenario in which CSI measurement needs to be customized.

公开(公告)号：US20140211708A1

公开(公告)日：2014-07-31

申请号：US14208893

申请日：2014-03-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mu ZHAO ,  Zhihao XING ,  Yanping JIANG

IPC: H04W72/10 ,  H04L29/08 ,  H04L1/18

CPC classification number: H04W72/10 ,  H04L1/1803 ,  H04L1/1854 ,  H04L1/1858 ,  H04L1/1887 ,  H04L69/324

Abstract: Embodiments of the present invention provide a method and apparatus for receiving fragments as well as a method and apparatus for transmitting fragments. The method for receiving fragments includes: receiving a group of fragments from a transmitter through a first channel, where the transmitter suspend transmitting a next group of fragments after the group of fragments is transmitted; and transmitting one or a plurality of first acknowledgement messages to the transmitter through the first channel immediately after the group of fragments are received. According to embodiments of the present invention, the acknowledgement messages may be immediately transmitted to the transmitter through a current channel after one group of fragments are received through the current channel, thereby avoiding the delay of a fragment receiving and transmitting process, which is caused by the competition and occupation of the channel by other nodes, and thus improving transmission efficiency.

Abstract translation: 本发明的实施例提供了一种用于接收片段的方法和装置以及用于传送片段的方法和装置。 用于接收片段的方法包括：通过第一信道从发射机接收一组片段，其中，所述发射机在发送所述片段组之后暂停发送下一组片段; 以及在接收到所述分组组之后立即通过所述第一信道向所述发射机发送一个或多个第一确认消息。 根据本发明的实施例，在通过当前信道接收到一组片段之后，确认消息可以通过当前信道被立即发送到发射机，从而避免了片段接收和发送过程的延迟，这是由 通过其他节点的竞争和占用，从而提高传输效率。