Method and apparatus for performing enhanced synchronization in wireless communication system

    公开(公告)号:US11202270B2

    公开(公告)日:2021-12-14

    申请号:US16771406

    申请日:2018-12-13

    摘要: The present disclosure relates to a communication technique that fuses, with IoT technology, a 5G communication system for supporting higher data transmission rates than 4G systems, and a system thereof. The present disclosure can be applied to intelligent services (such as smart home, smart building, smart city, smart car, or connected car, health care, digital education, retail business, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. The present disclosure relates to a method and an apparatus for performing synchronization using previous synchronization information where the previous synchronization information may be information about synchronization that is lost when the terminal turns off a radio frequency module to enter a low power mode.

    Beam operation method and device at terminal of beamforming communication system

    公开(公告)号:US11374643B2

    公开(公告)日:2022-06-28

    申请号:US16954044

    申请日:2019-01-31

    IPC分类号: H04B7/08

    摘要: The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transmission rate beyond a 4G system, and a system therefor. The present disclosure may be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or connected car, health care, digital education, retail business, a security and safety-related service, etc.) on the basis of 5G communication technology and IoT-related technology. A communication method of a terminal of a mobile communication system, according to one embodiment of the present specification, comprises the steps of: acquiring moving speed information of a terminal; determining a reception beam candidate group on the basis of the moving speed information; and determining a reception beam, in the reception beam candidate group, for receiving a signal.

    Method and device for selecting beam in wireless communication system which uses a plurality of antennas

    公开(公告)号:US11013013B2

    公开(公告)日:2021-05-18

    申请号:US15103820

    申请日:2014-12-11

    摘要: The present invention relates to a method and a device for selecting a beam in a wireless communication system which uses a plurality of antennas such as an array antenna. A method according to one embodiment of the present invention is a method for selecting a transmission beam in a transmission device of a wireless communication device comprising a transmission device having a plurality of transmission array antennas, and a receiving device having receiving array antennas in the same number as the number of transmission array antennas, and the method comprises the steps of: determining antenna pairs by measuring the transmission rate of each of the receiving array antennas of the receiving device, individually for each array antenna; determining the number of transmission array antennas and individual transmission-array-antenna modes so as to transmit data according to the service requirements of data whose transmission is required, when data transmission is required; and transmitting data through the determined transmission array antennas.

    Device and method for fronthaul transmission in wireless communication system

    公开(公告)号:US11477801B2

    公开(公告)日:2022-10-18

    申请号:US17085269

    申请日:2020-10-30

    IPC分类号: H04W72/12

    摘要: A pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE) is provided. The device of a radio unit (RU) of a base station in a wireless communication system includes at least one transceiver and at least one processor coupled to the at least one transceiver, wherein the at least one processor is configured to receive a first control message including a section extension field from a digital unit (DU) via a fronthaul interface, identify additional information based on the section extension field, and acquire a beamforming weight based on the additional information, wherein the first control message is configured to schedule a terminal in a control plane.

    Device and method for fronthaul transmission in wireless communication system

    公开(公告)号:US11438912B2

    公开(公告)日:2022-09-06

    申请号:US17085269

    申请日:2020-10-30

    IPC分类号: H04W72/12

    摘要: A pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE) is provided. The device of a radio unit (RU) of a base station in a wireless communication system includes at least one transceiver and at least one processor coupled to the at least one transceiver, wherein the at least one processor is configured to receive a first control message including a section extension field from a digital unit (DU) via a fronthaul interface, identify additional information based on the section extension field, and acquire a beamforming weight based on the additional information, wherein the first control message is configured to schedule a terminal in a control plane.

    Method and apparatus for controlling beamforming

    公开(公告)号:US10763928B2

    公开(公告)日:2020-09-01

    申请号:US15568631

    申请日:2016-04-15

    摘要: The present invention relates to techniques for a sensor network, machine-to-machine (M2M) communication, machine-type communication (MTC) and internet of things (IoT). The present invention may be applied to said technique-based intelligent services (such as smart home, smart building, smart city, smart or connected car, health care, digital education, retail business, and services associated with security and safety). A transmission apparatus of a wireless communication system according to an embodiment of the present invention comprises: a transmission unit for transmitting a compressed beacon frame by means of a plurality of transmission beams; a receiving unit for receiving information for the optimal transmission beam from among the plurality of transmission beams; and a control unit for controlling beamforming by means of a beam received from a terminal, wherein the data and header are compressed into a single frame in the compressed beacon frame.