Method and apparatus for transmitting and receiving data channels in wireless communication system

    公开(公告)号:US11646816B2

    公开(公告)日:2023-05-09

    申请号:US16975086

    申请日:2019-02-20

    CPC classification number: H04L1/0013 H04L1/1812 H04W72/1289

    Abstract: The present disclosure relates to a communication technique for fusing, with an IoT technology, a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The present disclosure may be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail, and security and safety related services, on the basis of 5G communication technologies and IoT-related technologies. A method of a terminal according to an embodiment of the present invention comprises: receiving an indicator for changing a bandwidth from a base station; identifying whether there is a signal to be transmitted on the changed bandwidth at a time of transmitting hybrid automatic repeat request (HARQ) ACK information for data received on a secondary cell (SCell) from the base station; and multiplexing and transmitting the signal and the HARQ ACK information in case that there is a signal to be transmitted in the changed bandwidth.

    Method and apparatus for managing hybrid automatic repeat request process in mobile communication system

    公开(公告)号:US11569943B2

    公开(公告)日:2023-01-31

    申请号:US16859756

    申请日:2020-04-27

    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for managing a hybrid automatic repeat request (HARM) process of a base station in a mobile communication system according to an embodiment of the present disclosure includes confirming whether a first data corresponding to a first service and a second data corresponding to a second service collide with each other. The method also includes determining whether to toggle a new data indicator (NDI) based on a modulation and coding scheme (MCS) index and the number of physical resource block (PRB) if it is determined that the first data and the second data collide with each other and retransmitting the NDI and the first data according to the determination result.

    Apparatus and method for performing retransmission in wireless communication system

    公开(公告)号:US11563526B2

    公开(公告)日:2023-01-24

    申请号:US17055348

    申请日:2019-05-15

    Abstract: Disclosed is a 5th generation (5G) or a pre-5G communication system for supporting a data transmission rate higher than that of a 4th generation (4G) communication system such as long term evolution (LTE). An apparatus and a method for performing retransmission in a wireless communication system are provided. A method for operating a transmitting device in a wireless communication system, according to various embodiments of the present disclosure, comprises the steps of: transmitting a plurality of data code blocks (CBs) to at least one receiving device in an initial transmission step; receiving, from the at least one receiving device, feedback information including information for indicating the number of data CBs, from among the plurality of data CBs, for which decoding has failed; and transmitting the number of parity CBs, determined on the basis of the number of data CBs for which the decoding has failed, to the at least one receiving device in a retransmission step. Therefore, the resources required for retransmission can be reduced.

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