Method and apparatus for detecting channel in mobile communication system operating in unlicensed band

    公开(公告)号:US10736142B2

    公开(公告)日:2020-08-04

    申请号:US15532985

    申请日:2015-12-03

    Abstract: The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transmission rate after a 4G system and, and a system therefor. The present disclosure can be applied to intelligent services on the basis of 5G communication technology and IoT-related technology (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail business, security and safety-related service, etc.). When a particular frequency at which an LTE-A system operates is included in an unlicensed band, a situation may occur where some subframes of the LTE-A system cannot be used. When a synchronization signal and a discovery reference signal to be transmitted by a base station collide with a detection and channel occupation operation for the unlicensed band, the timing of the detection and channel occupation operation for the unlicensed band may be adjusted in order to solve the problem of the collision.

    Method and apparatus for channel estimation and data decoding in wireless communication system

    公开(公告)号:US10721038B2

    公开(公告)日:2020-07-21

    申请号:US15821267

    申请日:2017-11-22

    Abstract: A communication method and system that combine the internet of things (IoT) technology with fifth generation (5G) communication systems supporting a higher data rate after fourth generation (4G) systems are provided. The present disclosure may be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart or connected cars, healthcare, digital education, retail businesses, and security and safety related services on the basis of 5G communication technologies and IoT related technologies. A method of a terminal in a wireless communication system to improve DMRS channel estimation performance is provided. The method includes receiving first information configuring a physical resource block (PRB) bundling size indication based on second information, receiving the second information indicating the number of at least one PRB, if the PRB bundling size indication is configured, and estimating the channel state based on an assumption that the same precoding is applied to the at least one PRB based on the second information.

    Method and apparatus for transmitting information related to a reference signal

    公开(公告)号:US10536248B2

    公开(公告)日:2020-01-14

    申请号:US16298368

    申请日:2019-03-11

    Abstract: Methods and systems 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 described. Aspects 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 according to an embodiment includes: receiving control information; obtaining information related to the orthogonal cover code (OCC) length, based on the received control information; and receiving a reference signal, based on the information related to the OCC length. A system according to an embodiment includes, a base station that transmits information related to a reference signal to a terminal, and a terminal that receives the reference signal based on the received information, thereby improving the performance of channel estimation.

    METHOD AND APPARATUS FOR TRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20180287682A1

    公开(公告)日:2018-10-04

    申请号:US15934099

    申请日:2018-03-23

    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), and 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 describes methods for supporting uplink sub-band precoding for effective data transmission and reception, reporting a failure of channel state measurement of a terminal, and reporting a channel state according to multiple channel state information reference signal (CSI-RS) transmission.

    Method and apparatus for configuring demodulation reference signal position in wireless cellular communication system

    公开(公告)号:US12301395B2

    公开(公告)日:2025-05-13

    申请号:US18526537

    申请日:2023-12-01

    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 by a terminal in a wireless communication system is provided. The method includes identifying a slot type of a terminal from a first slot type and a second slot type, determining a position of a demodulation reference signal (DMRS) based on the slot type, and receiving the DMRS based on the position from a base station.

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