METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL BY USING MULTIPLE BEAMS IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210368486A1

    公开(公告)日:2021-11-25

    申请号:US17444456

    申请日:2021-08-04

    Abstract: A method performed by a user equipment (UE) in a wireless communication system includes receiving, from a base station (BS), physical downlink shared channel (PDSCH) configuration information including a list of transmission configuration indicator (TCI) states, receiving, from the BS, a PDSCH media access control element (MAC CE) including information indicating activation of at least one TCI state in the list, identifying whether the PDSCH MAC CE is a MAC CE capable of indicating two or more TCI states for one TCI codepoint, receiving, from the BS, downlink control information (DCI) including information indicating a TCI codepoint, and receiving, from the BS, data via a PDSCH based on the information indicating activation of the at least one TCI state, a result of the identifying, and the information indicating the TCI codepoint.

    METHOD AND DEVICE FOR HANDLING LBT FAILURE INDICATOR WHEN DAPS HANDOVER IS CONFIGURED IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210345200A1

    公开(公告)日:2021-11-04

    申请号:US17236309

    申请日:2021-04-21

    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 performed by a terminal in a communication system is provided. The method includes receiving, from a first base station, a first message including first information used for detection of consistent uplink listen before talk (LBT) failures for the first base station, receiving, from the first base station, a second message for a handover to a second base station, the second message including second information for a reconfiguration with sync, in case that third information configuring at least one dual active protocol stack (DAPS) bearer is included in the second message and an indication of the consistent uplink LBT failures for the first base station is identified based on the first information while performing a procedure associated with the handover, suspending data communication of all data radio bearers (DRBs) associated with the first base station.

    METHOD AND APPARATUS FOR RANDOM ACCESS PROCEDURE IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210251014A1

    公开(公告)日:2021-08-12

    申请号:US17171105

    申请日:2021-02-09

    Abstract: A communication method and system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system 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 performing a random access procedure in a wireless communication system is provided.

    METHOD AND APPARATUS FOR SUPPORTING SUPPLEMENTARY UPLINK FREQUENCIES IN NEXT GENERATION MOBILE COMMUNICATION SYSTEM

    公开(公告)号:US20210243681A1

    公开(公告)日:2021-08-05

    申请号:US17301664

    申请日:2021-04-09

    Abstract: The present disclosure relates to a communication scheme and system for converging a 5th generation (5G) communication system for supporting a data rate higher than that of a 4th generation (4G) system with an internet of things (IoT) technology. The present disclosure is applicable to intelligent services (e.g., smart home, smart building, smart city, smart car, connected car, health care, digital education, retail, and security and safety-related services) based on the 5G communication technology and the IoT-related technology. The present disclosure provides a method for preventing a legacy terminal from camping on an enhanced LTE (eLTE) base station that is connected to only a next generation (NG) core by combining a legacy information element (IE) and a new IE carried in system information broadcast by the base station in a next generation mobile communication system.

    METHOD AND APPARATUS FOR DETERMINING TRANSMISSION TIME POINT OF TYPE 1 CONFIGURED GRANT IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210144749A1

    公开(公告)日:2021-05-13

    申请号:US17088330

    申请日:2020-11-03

    Abstract: The disclosure relates to a communication technique for converging an IoT technology with a 5G communication system for supporting a higher data transmission rate beyond a 4G system, and a system therefor. The disclosure may be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or connected car, healthcare, digital education, retail business, a security and safety related service, or the like) based on a 5G communication technology and an IoT related technology. The disclosure provides a method and apparatus for determining a transmission time point of a type 1 configured grant in a wireless communication system.

    METHOD AND APPARATUS FOR PERFORMING HANDOVER IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210136635A1

    公开(公告)日:2021-05-06

    申请号:US17088933

    申请日:2020-11-04

    Abstract: A method, performed by a terminal, in a wireless communication system is provided. The method includes receiving, from a source base station, a radio resource control (RRC) reconfiguration message including data radio bearer (DRB) configuration information, wherein the DRB configuration information includes an identifier of a DRB and an indicator for a dual active protocol stack (DAPS) handover, and in case that the DRB configuration information includes service data adaptation protocol (SDAP) configuration information, and completion of a random access to a target base station is indicated by a target medium access control (MAC) entity for the target base station, reconfiguring a SDAP entity based on the SDAP configuration information.

    DEVICE AND METHOD FOR PROCESSING PLURALITY OF RESOURCE REQUESTS IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210029591A1

    公开(公告)日:2021-01-28

    申请号:US16989370

    申请日:2020-08-10

    Abstract: Disclosed are a communication method for merging an IoT technique with a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. The present disclosure can be applied to intelligent services on the basis of a 5G communication technique and IoT-related techniques. The disclosed method relates to processing a resource allocation request of a terminal in a communication system, the method comprising the steps of: triggering a resource allocation request; confirming whether a resource for transmitting the resource allocation request has been allocated to a first subframe of at least two serving cells at the same time; and transmitting the resource allocation request to one serving cell of the at least two serving cells according to a predetermined condition when the resource is allocated to the first subframe of the at least two serving cells at the same time.

    METHOD AND APPARATUS FOR SWITCHING BETWEEN 2 STEP AND 4 STEP RANDOM ACCESS (RA) PROCEDURES AND CONTENTION RESOLUTIONS

    公开(公告)号:US20200344812A1

    公开(公告)日:2020-10-29

    申请号:US16857796

    申请日:2020-04-24

    Abstract: 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) are provided. The communication method and system 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 performing a random access (RA) procedure is provided. The method comprises transmitting a first message of a 2 step RA procedure including an RA preamble and a cell-radio network temporary identifier (C-RNTI), receiving a second message of the 2 step RA procedure on a physical downlink control channel (PDCCH) addressed to the C-RNTI, identifying whether a time alignment timer (TAT) is running or not, and determining that the 2 step RA procedure is completed successfully in case that the TAT is running and the PDCCH schedules an uplink (UL) transport block (TB) for a new transmission.

    METHOD AND APPARATUS FOR INACTIVE MODE OPERATION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200221418A1

    公开(公告)日:2020-07-09

    申请号:US16823928

    申请日:2020-03-19

    Abstract: The 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 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 is provided for a terminal to transmit uplink data without a transmission resource previously allocated by a base station in a next generation mobile communication system. A method by a terminal includes while the terminal is in an inactive mode, receiving a paging message from a base station, identifying a paging identifier included in the paging message, if the paging identifier corresponds to a core network (CN) paging identifier, transmitting a first radio resource control (RRC) message, and if the paging identifier corresponds to a radio access network (RAN) paging identifier, transmitting a second RRC message.

    METHOD AND APPARATUS FOR APPLYING DISCONTINUOUS RECEPTION MODE IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200187116A1

    公开(公告)日:2020-06-11

    申请号:US16791468

    申请日:2020-02-14

    Abstract: The disclosure relates to a 5G or pre-5G communication system. A method performed by a terminal, includes receiving, from a BS, first system information including first information for an extended DRX mode; receiving, from a BS, second system information including second information associated with a DRX cycle; determining whether to request activation of the extended DRX mode based on the first information; when it is determined to request the activation of the extended DRX mode, transmitting, to an MME, a request message including third information for an operation in the extended DRX mode; receiving, from the MME, a response message based on the request message;when the response message includes fourth information for the operation in the extended DRX mode, performing the operation in the extended DRX mode based on the second information and the fourth information; and when the response message does not include the fourth information, performing an operation in a regular DRX mode based on the second information.

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