Method for random access, user equipment and base station

    公开(公告)号:US11617214B2

    公开(公告)日:2023-03-28

    申请号:US17329016

    申请日:2021-05-24

    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.
    Embodiments of the present invention provide a method for RACH re-attempt, a user equipment and a base station. The method comprises the steps of: by a base station, determining system configuration information and transmitting the system configuration information to a user equipment; and then, by the user equipment, transmitting a preamble sequence to perform random access, and if the random access is failed, performing RACH attempt according to the received RACH re-attempt configuration information to perform random access until a preset decision condition is satisfied. The embodiment of the present invention is used for RACH re-attempt when random access fails.

    Method and apparatus for uplink transmission in a wireless communication system

    公开(公告)号:US11558825B2

    公开(公告)日:2023-01-17

    申请号:US17392789

    申请日:2021-08-03

    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. The present disclosure relates to mobile communication technology, and in particular, to a method for uplink transmission and apparatus thereof.

    METHOD AND DEVICE FOR RECEIVING AND TRANSMITTING DATA AND/OR CONTROL INFORMATION

    公开(公告)号:US20220400393A1

    公开(公告)日:2022-12-15

    申请号:US17804467

    申请日:2022-05-27

    Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure provides a method and device for receiving and/or transmitting data and/or control information, which can improve the reception performance of receiving and transmitting data and/or control information of electronic devices such as repeaters and UEs. According to an aspect of the present disclosure, there is provided a method for receiving and/or transmitting data and/or control information, executed by a node device, comprising: acquiring state related information of the node device; determining a work state of the node device according to the state related information of the node device; and according to the determined work state of the node device, stopping working or performing reception and/or transmission of the data and/or control information accordingly.

    Method and apparatus for transmitting uplink demodulation reference signals

    公开(公告)号:US11323967B2

    公开(公告)日:2022-05-03

    申请号:US16460403

    申请日:2019-07-02

    Abstract: A method and an apparatus for transmitting uplink demodulation reference signals (DMRSs) is provided. The method includes a user equipment (UE) determines an uplink DMRS format for demodulating a physical uplink shared channel (PUSCH) according to frequency-domain resources occupied by the PUSCH, in which the uplink DMRS format includes a comb occupied by a PUSCH DMRS sequence. The comb is subcarriers having specified intervals occupied by demodulation reference signals, and the specified intervals between the occupied subcarriers are same. For the DMRSs using the comb format, subcarriers with specific intervals are used for channel estimation, and values of the channel estimation are used for data demodulation. The UE transmits uplink information and the demodulation reference signals on physical resources using the uplink DMRS format. The present disclosure can improve the multiplexing ratio of uplink physical resources in a multi-UE scenario.

    System and method for common and UE-specific frequency resource scheduling

    公开(公告)号:US11212799B2

    公开(公告)日:2021-12-28

    申请号:US16305856

    申请日:2017-05-30

    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides a resource scheduling method, which includes: determining, by a UE, a resource allocation indicating way in DCI of a first type search space and a resource allocation indicating way in DCI of a second type search space, wherein the resource allocation indicating way comprises an allocation unit of a UE frequency resource and a bandwidth and a location of all frequency resources available for UE frequency resource allocation; in the first type search space and the second type search space, performing, by the UE, blind detection for PDCCH/EPDCCH on the bandwidth and the location of all the frequency resources available for the UE frequency resource allocation in the corresponding resource allocation indicating way according to the allocation unit of the UE frequency resource in the corresponding resource allocation indicating way, determining a bandwidth and a location of an uplink resource and/or a downlink resource actually allocated for the UE. According to the present disclosure, in a condition that the UE cannot support the entire system bandwidth, an uplink resource and a downlink resource allocated by a base station can still be appropriately determined.

    Method and apparatus for transmitting UCI in wireless communication system

    公开(公告)号:US11101943B2

    公开(公告)日:2021-08-24

    申请号:US16477840

    申请日:2018-01-12

    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure discloses a method of a user equipment (US) for transmitting uplink control information (UCI) in a wireless communication system. The method performed by the user equipment includes: determining a hybrid automatic retransmission request (HARQ) timing or HARQ timings of a dynamically scheduled physical downlink shared channel (PDSCH) and/or a semi-persistent scheduling (SPS) PDSCH and/or a physical downlink control channel (PDCCH) that indicates SPS releasing according to information sent from a base station; and transmitting generated hybrid automatic retransmission request acknowledgement (HARQ-ACK) information according to the HARQ timing or the HARQ timings determined. By applying present disclosure, it is possible to simplify the HARQ-ACK timing determination mode and can perform HARQ-ACK information transmission in time.

    Method, base station apparatus and user equipment for random access

    公开(公告)号:US11096218B2

    公开(公告)日:2021-08-17

    申请号:US16348379

    申请日:2017-11-24

    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. Compared to the prior art, the present invention transmits a multiple of subsequences in a preamble sequence at a multiple of random access transmission occasions by using design of random access channel structure so as to increase the success rate of the detection and access efficiency.

    Method and apparatus for grant-free data transmission in wireless communication system

    公开(公告)号:US11057898B2

    公开(公告)日:2021-07-06

    申请号:US16347495

    申请日:2017-11-01

    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides a grant-free data transmission method. The method includes: receiving resource allocation information for grant-free transmission from a base station; when there is data to be transmitted in a grant-free transmission mode, transmitting uplink data using the grant-free transmission resources according to the resource allocation information; if the transmission of the uplink data cannot be completed within a predefined number of uplink data transmissions, transmitting a dedicated resource request indicator to the base station; receiving dedicated resource allocation information from the base station; and transmitting subsequent uplink data on dedicated resources corresponding to the dedicated resource allocation information. The present disclosure further provides a grant-free data transmission method applied to the base station, a UE and a base station. The technical solution of the present disclosure can improve the data transmission reliability as well as system spectrum utilization ratio.

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