Method and device for managing channel occupancy duration of unlicensed frequency band

    公开(公告)号:US12200764B2

    公开(公告)日:2025-01-14

    申请号:US17695332

    申请日:2022-03-15

    Abstract: This application discloses a wireless communication method, including: receiving, by a network device, uplink transmission of a first terminal in first duration of channel occupancy duration of the first terminal, where the channel occupancy duration of the first terminal further includes second duration, and the second duration is later than the first duration; and performing, by the network device, downlink transmission in the second duration, where a sum of the first duration and the second duration is less than or equal to the channel occupancy duration of the first terminal. This application further discloses a network device and a terminal that correspond to the wireless communication method. By applying the method and devices, a resource obtained through contention by a terminal applied to an unlicensed frequency band can be properly used, to improve operating efficiency of the unlicensed frequency band.

    Method for radio link monitoring on unlicensed spectrum and communications apparatus

    公开(公告)号:US11985700B2

    公开(公告)日:2024-05-14

    申请号:US17240603

    申请日:2021-04-26

    CPC classification number: H04W74/0808 H04L5/0048 H04W16/14

    Abstract: A method for radio link monitoring on an unlicensed spectrum and a communications apparatus is provided. The method includes: A terminal device determines one or more channel occupancy times (COTs). The terminal device detects one or more downlink reference signals within the one or more COTs. The terminal device determines, based on the downlink reference signal detected within the one or more COTs, whether a channel needs to be reconnected. According to the method for radio link monitoring on an unlicensed spectrum that is provided in this application, accuracy of radio link monitoring performed on an unlicensed spectrum can be ensured, precision of a result of the radio link monitoring can be improved, and a more accurate result of the radio link monitoring can be obtained, thereby improving communication efficiency and communication quality.

    Control information transmission method and apparatus

    公开(公告)号:US11902814B2

    公开(公告)日:2024-02-13

    申请号:US17371957

    申请日:2021-07-09

    CPC classification number: H04W24/10 H04W74/0808

    Abstract: Embodiments of this application provide a control information transmission method. The method includes: User equipment UE sends report information to a base station, where the report information includes a detection result of one or more downlink reference signals of the UE or a status of a timer/counter corresponding to the one or more downlink reference signals; the UE receives feedback information from the base station, where the feedback information includes sending status information of the one or more downlink reference signals.

    Random access method, apparatus, device, and storage device

    公开(公告)号:US11882603B2

    公开(公告)日:2024-01-23

    申请号:US17171076

    申请日:2021-02-09

    Inventor: Ji Wu Jun Zhu Qiong Jia

    Abstract: This application provides a random access method, apparatus, and device, and a storage medium. The method includes: A terminal device scrambles first identification information of the terminal device by using an OCC, and sends a first message to a network device. After receiving the first message sent by the terminal device, the network device sends a second message to the terminal device based on the first message, where the second message includes identification information of one or more terminal devices that succeed in random access, so that the terminal device can determine, based on the identification information of the one or more terminal devices the one or more terminal devices include the first identification information of this terminal device, whether this terminal device succeeds or fails in random access.

    System information transmission method, and related device and system

    公开(公告)号:US11856560B2

    公开(公告)日:2023-12-26

    申请号:US17172432

    申请日:2021-02-10

    Inventor: Ji Wu Jun Zhu Qiong Jia

    CPC classification number: H04W72/0446 H04W72/23 H04W74/0808

    Abstract: This application provides a system information transmission method, and a related device and system. The method includes: receiving, by a network device, a system information request sent by one or more terminals; transmitting, by the network device, system information SI, where SI transmitted for one terminal has a quasi-co-location QCL with a portion of downlink signal blocks, and the portion of downlink signal blocks are a subset of all downlink signal blocks transmitted by the network device; and sending, by the network device, first indication information, where the first indication information indicates a mapping between a downlink signal block and SI, and the downlink signal block has a QCL with the SI corresponding to the downlink signal block. The foregoing solution can reduce system overheads and improve resource utilization.

    Contention window management method and sending device

    公开(公告)号:US11553531B2

    公开(公告)日:2023-01-10

    申请号:US16991227

    申请日:2020-08-12

    Inventor: Qiong Jia Jun Zhu Ji Wu

    Abstract: Embodiments of this application provide a contention window management method applied to an unlicensed band. The method includes sending, by a sending device, one or more data packets to one or more receiving devices in one reference time unit or a plurality of reference time units, where the one or more data packets occupy a first bandwidth. The method further includes receiving, by the sending device from the one or more receiving devices, a hybrid automatic repeat request HARQ or HARQs for the one or more data packets. The sending device determines a contention window (CW) size of a second bandwidth with reference to the HARQ or HARQs. The CW update based on HARQ feedback improves communication efficiency.

    Communications method, apparatus, and device, and storage medium

    公开(公告)号:US11516843B2

    公开(公告)日:2022-11-29

    申请号:US17031604

    申请日:2020-09-24

    Inventor: Ji Wu Jun Zhu Qiong Jia

    Abstract: This application provides a communications method, which includes: performing, by a network device, LBT on a first carrier, and determining a time offset when the LBT is completed, where the first carrier is used to send a first SS Burst Set, and the time offset is a time offset of an actual transmission time of the first SS Burst Set on the first carrier relative to a configured transmission time of the first SS Burst Set; sending, by the network device, the time offset to a terminal; and receiving, by the terminal, the time offset, and performing rate matching on the first carrier based on the time offset. Thus, the terminal may determine the actual transmission time of the first SS Burst Set based on the time offset, to perform the rate matching and accurately parse downlink data, thereby improving reliability of a communications system.

    CONTROL INFORMATION TRANSMISSION METHOD AND APPARATUS

    公开(公告)号:US20210337416A1

    公开(公告)日:2021-10-28

    申请号:US17371957

    申请日:2021-07-09

    Abstract: Embodiments of this application provide a control information transmission method. The method includes: User equipment UE sends report information to a base station, where the report information includes a detection result of one or more downlink reference signals of the UE or a status of a timer/counter corresponding to the one or more downlink reference signals; the UE receives feedback information from the base station, where the feedback information includes sending status information of the one or more downlink reference signals.

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