Device and system characterized by measurement, report, and change procedure by terminal for changing transmission/reception point, and base station procedure for supporting same

    公开(公告)号:US12088363B2

    公开(公告)日:2024-09-10

    申请号:US18341374

    申请日:2023-06-26

    Abstract: The disclosure relates to a communication technique for convergence of an IoT technology and a 5G communication system for supporting a higher data transmission rate beyond a 4G system, and a system therefor. The disclosure can be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart cart or connected car, health care, digital education, retail business, security and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology. The disclosure defines a mobility method for a terminal residing in a system in which transmission/reception points (TPRs), supporting solely some protocols among entire access stratum protocols comprising PHY, MAC, RLC, PDCP, and RRC, coexist in a wireless communication system. Specifically, the disclosure defines a method for dynamically changing, depending on determination by a base station, a beam and a transmission/reception point to be used for transmitting information to or receiving information from a terminal through a method in which a system using multiple beams notifies, in advance, of a measurement reference signal transmitted using transmission/reception points of different networks, to allow a terminal to select a required reception beam from a corresponding resource and measure beam information of each transmission/reception point, or a terminal transmits measured information as feedback in which each transmission/reception point is specified. Accordingly, the disclosure can provide a criterion of rapid and highly precise determination for changing a beam and a transmission/reception point and thus prevent a terminal from needlessly measuring and reporting, so as to achieve an effect of reduction in the power consumption of the terminal and reduction of delay in change of a transmission/reception point.

    Method and device for configuring cell in wireless communication system

    公开(公告)号:US11071018B2

    公开(公告)日:2021-07-20

    申请号:US16188179

    申请日:2018-11-12

    Abstract: The present invention relates to a method and a device for selecting a cell in a mobile communication system and, more particularly, to a method and a device for selecting a cell for transmitting data, by a base station, not only in a licensed frequency band but in an unlicensed frequency band. In order to achieve the described task, a method for configuring a cell of a base station in a mobile communication system according to an embodiment of the present invention comprises the steps of: connecting with a terminal through a first cell of a licensed band; transmitting, to the terminal, a message for configuring multiple second cells in an unlicensed band through the first cell; and monitoring the configured multiple second cells in the unlicensed band, wherein the number of the multiple second cells exceeds the number of cells, a Carrier Aggregation (CA) of which the terminal can support. The present disclosure relates to a 5G or a pre-5G communication system to be provided in order to support a higher data transmission rate after a 4G communication system such as an LTE.

    Method and apparatus for determining radio link failure

    公开(公告)号:US11006389B2

    公开(公告)日:2021-05-11

    申请号:US16347511

    申请日:2017-11-03

    Abstract: The present disclosure relates to a communication technique for converging an IoT technology with a 5G communication system to support a higher data transmission rate beyond a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (e.g., a smart home, a smart building, a smart city, a smart or connected car, health care, digital education, retail business, and services associated with security and safety, or the like) on the basis of 5G communication technology and an IoT-related technology. The present invention provides a method for determining a radio link failure. The method comprises the steps of: identifying an indication of in synchronization (IS) or out of synchronization (OOS) with respect to a plurality of reception beams; starting a timer to determine a radio link failure when the indication of OOS is identified; and holding the timer when at least one of the plurality of reception beams is requested to be changed.

    Method and apparatus for measuring and reporting beams in a beamforming based system

    公开(公告)号:US10484071B2

    公开(公告)日:2019-11-19

    申请号:US16180423

    申请日:2018-11-05

    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). Disclosed is a method of reporting beam measurement state information by a User Equipment (UE). The method may include: measuring beam state information by using a first reception chain and a second reception chain; controlling beam state information on the first reception chain to correspond to beam state information on the second reception chain; calculating state information on each beam based on the controlled beam state information on the first reception chain and beam state information on the second reception chain; and reporting state information on one or more beams.

    Method and apparatus for generating beam measurement information in a wireless communication system

    公开(公告)号:US10270514B2

    公开(公告)日:2019-04-23

    申请号:US15407889

    申请日:2017-01-17

    Abstract: The present disclosure is related to a 5th generation (5G) or pre-5G communication system to be provided to support a higher data transmission rate since 4th generation (4G) communication systems like long-term evolution (LTE). A method for generating beam measurement information of user equipment (UE) is provided. The method of UE includes receiving a first reference signal from a base station, requesting a transmission of a second reference signal when a result of measuring the first reference signal satisfies a predetermined condition, receiving the second reference signal, and generating a measurement result based on the second reference signal.

    Simultaneous transmission avoidance method and apparatus of UE in wireless communication system supporting dual connectivity

    公开(公告)号:US10244509B2

    公开(公告)日:2019-03-26

    申请号:US14668503

    申请日:2015-03-25

    Abstract: A pre-5th-Generation (5G) or 5G communication system is provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Further, a simultaneous transmission avoidance method and apparatus of a terminal is provided for use in a wireless communication system supporting the dual connectivity. The Buffer Status Report (BSR) method of a terminal connected to a first and a second base station in a wireless communication system supporting a dual connectivity according to the present disclosure includes receiving an uplink resource allocation information from the first base station, generating an uplink allocation map information of the first base station based on the uplink resource allocation information, and transmitting, when BSR for the second base station is triggered, the uplink allocation map information of the first base station and the BSR for the second base station to the second base station.

Patent Agency Ranking