METHOD AND APPARATUS FOR CHANNEL ACCESS IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20170238233A1

    公开(公告)日:2017-08-17

    申请号:US15429919

    申请日:2017-02-10

    CPC classification number: H04W40/04 H04W16/14 H04W72/1215 H04W74/0808

    Abstract: A communication method for a channel access in a wireless communication system and an apparatus therefor are provided. The communication method includes an evolved NodeB (eNB) that transmits data to a user equipment (UE) through a licensed band, and determines whether an unlicensed band channel is in an idle state during a first channel sensing duration. If the unlicensed band channel is in the idle state, the eNB transmits data to the UE through an unlicensed band during a first channel occupying duration, a second channel sensing duration, and a second channel occupying duration. In the method, a sum of the first channel occupying duration, the second channel sensing duration, and the second channel occupying duration is equal to or less than a certain time.

    METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING SIGNAL FOR GROUPCAST IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20230362932A1

    公开(公告)日:2023-11-09

    申请号:US18040785

    申请日:2021-07-20

    CPC classification number: H04W72/20 H04L1/1812 H04W72/566

    Abstract: The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate than a 4G communication system such as LTE. According to various embodiments of the present disclosure, a method performed by a transmission apparatus in a wireless communication system may be provided. The method may comprise the steps of: transmitting, via a physical downlink control channel (PDCCH), first control information for scheduling a group common-physical downlink shared channel (GC-PDSCH) via which multicast data is transmitted, including information related to hybrid automatic repeat request (HARQ) feedback for the multicast data; and transmitting, via the PDCCH, second control information for scheduling a physical downlink shared channel (PDSCH) via which unicast data is transmitted, including information related to HARQ feedback for the unicast data.

    METHOD AND APPARATUS FOR TRANSMITTING UPLINK CHANNEL IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220224484A1

    公开(公告)日:2022-07-14

    申请号:US17576335

    申请日:2022-01-14

    Abstract: The disclosure relates to a communication scheme and system for combining an Internet of things (IoT) technology with a fifth generation (5G) communication system for supporting a higher data transfer rate than a fourth generation (4G) system. The disclosure may be applied to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, and security- and safety-related services), based on a 5G communication technology and an IoT-related technology. A method by which the performance of joint channel estimation for multi-uplink repetitive transmission can be enhanced, and the coverage of an uplink channel can be improved is provided.

    METHOD AND APPARATUS FOR TRANSMISSION OF HARQ-ACK IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220116158A1

    公开(公告)日:2022-04-14

    申请号:US17495689

    申请日:2021-10-06

    Abstract: The 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. According to an embodiment of the disclosure, a method performed a terminal in a communication system comprising: receiving, from a base station, hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook information and HARQ-ACK bundling information; receiving, from the base station, downlink control information (DCI) for scheduling a physical downlink shared channel (PDSCH) on a physical downlink control channel (PDCCH); receiving, from the base station, the PDSCH; identifying, based on the HARQ-ACK codebook information and the HARQ-ACK bundling information, first HARQ-ACK information by bundling second HARQ-ACK information for the PDSCH and at least one third HARQ-ACK information; and transmitting, to the base station, the first HARQ-ACK information.

    APPARATUS AND METHOD FOR PERFORMING RETRANSMISSION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210226732A1

    公开(公告)日:2021-07-22

    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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