Method and device for efficient HARQ operation

    公开(公告)号:US11563527B2

    公开(公告)日:2023-01-24

    申请号:US16626787

    申请日:2017-12-15

    IPC分类号: H04L1/18 H04W84/04

    摘要: The present disclosure is research (No. GK17N0100, Millimeter-wave 5G Mobile Communication System Development) having been performed with support from “The Cross-Ministry Giga KOREA Project” funded by the government (Ministry of Science and ICT) in 2017. Disclosed are: a communication technique for merging, with IoT technology, a 5G communication system for intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security, and safety related services, and the like) on the basis of 5G communication technology and IoT-related technology. According to the present invention, a method by which a transmitter transmits data comprises a step of transmitting a data packet to a receiver, receiving hybrid ARQ (HARQ) feedback information based on a decoded result of the data packet, generating a data packet to be re-transmitted on the basis of the HARQ feedback information, and transmitting, to the receiver, the data packet to be re-transmitted, wherein the HARQ feedback information can include acknowledgment (ACK) or negative-acknowledgment (NACK) and information including a HARQ status of the data packet.

    Method and device for transmitting power headroom information in communication system

    公开(公告)号:US10863454B2

    公开(公告)日:2020-12-08

    申请号:US16496320

    申请日:2018-03-22

    IPC分类号: H04L7/00 H04W52/36 H04B7/06

    摘要: The present disclosure relates to a communication technique which combines IoT technology with a 5G communication system for supporting a higher data transfer rate than existing 4G systems, and a system thereof. The present disclosure can be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or a connected car, and services related to health care, digital education, retail business, security and safety, etc.) on the basis of 5G communication technology and IoT-related technology. The present method provides a power headroom information transmission method of a terminal, the headroom information transmission method including: a step of determining whether to transmit second power headroom information, on the basis of information about each beam included in first power headroom information, in a wireless communication system supporting beamforming; and a step of transmitting the second power headroom information to a base station when the transmission of the second power headroom information is determined.

    Carrier aggregation method and device in wireless communication system

    公开(公告)号:US10779326B2

    公开(公告)日:2020-09-15

    申请号:US16316412

    申请日:2017-07-19

    IPC分类号: H04W74/08 H04W72/04

    摘要: The present invention relates to 5G or pre-5G communication system for supporting a higher data transmission rate after 4G communication system such as LTE. The present invention provides a carrier aggregation method. A method of a base station, according to the present invention, comprises a step for: transmitting and receiving data to and from a terminal by means of a first carrier corresponding to a first bandwidth; transmitting to the terminal, by means of the first carrier, configuration information comprising information for an initial access to a second carrier corresponding to a second bandwidth; and transmitting and receiving data to and from the terminal by means of the second carrier on the basis of the configuration information.