Lg Electronics Inc.

Korea Advanced Institute of Science and Technology

Jayeong Kim

Sangrim Lee

Sunyoung Lee

Hojae Lee

Byungkyu Ahn

Eunjong Lee

Seungjune Yi

Kijun Jeon

Yunjung Yi

Sunghoon Jung

Byounghoon Kim

Sungjin Kim

Dan Keun Sung

Jeonggu Lee

Hanul Lee

Kijun Kim

Youngdae Lee

Sangwon Kim

Giwon Park

Jongyoul Lee

Gyeongcheol Lee

Kyungho Lee

Yeongjun Kim

Ikjoo Jung

Hansung Leem

Inkyu Bang

The present specification provides a method for estimating a quantum bit error rate (QBER) for key information, performed by a device in a quantum cryptography communication system, the method and device being characterized by: receiving a random access (RA) preamble from another device; transmitting a random access response (RAR) to the other device, in response to the RA preamble, performing a radio resource control (RRC) connection process with the other device; receiving data from the other device; and decoding the data on the basis of the key information, wherein the key information is determined on the basis of estimation of the QBER, and the device estimates the QBER on the basis of first two-dimensional parity information received from the other device through a public channel.

Method and device for estimating quantum bit error rate on basis of maximum bit group and two-dimensional parity

A method performed by means of a first wireless device in a wireless communication system, according to one embodiment of the present specification, comprises the steps of: transmitting, to a second wireless device, a first signal to which a first specific beam is applied; transmitting, to the second wireless device, a second signal to which a second specific beam is applied; receiving, from the second wireless device, feedback information generated on the basis of the first signal and the second signal; and determining, on the basis of the feedback information, a beam related to the second wireless device.

Method for controlling beam in wireless communication system, and apparatus therefor

A method performed by a first wireless device in a wireless communication system, according to one embodiment of the present specification, comprises the steps of: transmitting, to a second wireless device, a signal to which a specific beam is applied; receiving, from the second wireless device, feedback information generated on the basis of the signal; and determining, on the basis of the feedback information, a beam related to the second wireless device.

A method for performing reinforcement learning by a V2X communication device in an autonomous driving system, specifically, a method for performing reinforcement learning in consideration of a reward application ratio over time, is proposed. Action information is transmitted to a second V2X communication device, reward information is received from the second V2X communication device, and reinforcement learning is performed on the basis of a reward, wherein a reward corresponding to a ratio determined by a first V2X communication device is applied to the reinforcement learning, the ratio is determined on the basis of a time interval from a time point of transmission of the action information to a time point of reception of the reward information, and the ratio is between 0 and 1, both inclusive.

Method for performing reinforcement learning by V2X communication device in autonomous driving system

The present specification provides a method, performed by an apparatus, for transmitting at least one beam in a wireless communication system, the method comprising transmitting the at least one beam to another apparatus and receiving information about a result of measuring the at least one beam from the other apparatus, wherein the at least one beam is a beam generated on the basis of a signal synthesized from a laser signal being incident on a meta surface from a power controller, the laser signal consists of a plurality of frequency components, the synthesized signal is a signal in which power amplification is applied to each of the plurality of frequency components, and the power amplification is applied on the basis of the intensity regarding each of the plurality of frequency components.

Frequency comb power control apparatus for 4D beamforming, and method therefor

The present invention relates to a method of transmitting a Medium Access Control (MAC) Protocol Data Unit (PDU) by a user equipment (UE) in a wireless communication system. Especially, the method includes the steps of generating a first MAC PDU including at least one MAC Control Element (CE) and a first data; receiving an uplink grant for transmitting a second data, wherein a transmission time of the first data overlaps with a transmission time of the second data, and wherein a priority of the second data is higher than a priority of the first data; generating a second MAC PDU including the at least one MAC CE and the second data; and transmitting the second MAC PDU.

Method and apparatus for processing data units in conflicted resources in wireless communication system

The present invention relates to a method of transmitting a scheduling request (SR) by a user equipment (UE) in a wireless communication system. In particular, the method includes the steps of: receiving an uplink shared channel (UL-SCH) resource; based on the UL-SCH resource being overlapped with another resource and the UL-SCH resource being deprioritized, triggering an SR for informing that the UL-SCH resource is deprioritized while having data available for transmission on the UL-SCH resource; and transmitting the SR to a network.

Method and apparatus for transmitting a scheduling request related to a deprioritized uplink shared channel resource in wireless communication system

The present specification provides a method and a device, the method, performed by a device, for transmitting a first pulse train in a quantum communication system being characterized by: receiving a random access (RA) preamble from another device; transmitting an RA response (RAR) to the other device as a response to the RA preamble; performing a radio resource control (RRC) connection process with the other device; receiving data from the other device; and decoding the data on the basis of key information, wherein a first pulse train is generated in a laser diode of the device, and the key information is determined on the basis that the first pulse train passes through both a first path and a second path and is then transmitted from the device to the other device via a quantum channel.

Method and device for multi-wavelength plug-and-play quantum key distribution without time delay due to wavelength conversion

Provided is a method and device for correcting an error in a communication system, the method including: transmitting, to another device, data encrypted based on key information. The key information is obtained by: incident a detection pulse on a variable Faraday rotating mirror and a reference pulse on a first mirror, respectively, wherein the detection pulse and the reference pulse are pulses branched from a test pulse; generating a first current in a balanced photodetector (BPD) based on a first component obtained as the detection pulse is reflected from the variable Faraday rotating mirror and a second component obtained as the reference pulse is reflected from the first mirror; converting the first current into a second current; incident the second current on the variable Faraday rotating mirror; and correcting the error in the variable Faraday rotating mirror based on the incident second current.

Method and apparatus for correcting polarization distortion of faraday rotating mirror in plug-and-play quantum key distribution system

The present invention relates to a method of performing measurement by a user equipment (UE) in a wireless communication system. In particular, the method includes the steps of: when an uplink data transmission occurs in a measurement gap, determining a starting point of a temporary measurement gap based on a completion time of the uplink data transmission; transmitting information about the temporary measurement gap including the starting point of the temporary measurement gap; transmitting an uplink data during the measurement gap; and performing measurements during the temporary measurement gap.

Method and apparatus for performing measurement by user equipment in wireless communication system

Provided are a device and a method performed by the device to correct an error in a quantum communication system. The method is characterized by comprising: transmitting a random access (RA) preamble to another device; receiving a random access response (RAR) from the other device as a response to the RA preamble; performing a radio resource control (RRC) connection procedure with the other device; and transmitting data to the other device, wherein the data is encoded on the basis of key information, the error is measured on the basis of a test pulse, and the key information is distributed to the device and the other device on the basis of the error being corrected using an improved Faraday rotator mirror of the device.

Method and device for correcting polarization distortion in plug and play quantum key distribution system

The present invention relates to a method of performing a Scheduling Request (SR) by a User Equipment (UE) in a wireless communication system. In particular, the method includes the steps of: configuring a logical channel, wherein a SR transmission of the logical channel is prioritized over any Physical Uplink Shared Channel (PUSCH) transmission; and based on the SR being triggered due to the logical channel, transmitting the SR to a network.

Method and apparatus for performing a scheduling request based on a prioritized logical channel in wireless communication system

The present disclosure relates to a method for transmitting signals by a transmission end in a wireless communication system. In particular, the method includes configuring first and second type logical channel groups; receiving a first uplink grant; and transmitting buffer size information based on the uplink grant, wherein, when the first uplink grant is allowed to be used for transmission of buffer size information of the second logical channel group, the buffer size information includes the buffer size information of the first and second logical channel groups, and wherein, when the first uplink grant is not allowed to be used for transmission of buffer size information of the second logical channel group, the buffer size information includes the buffer size information of the first logical channel group.

Method and apparatus for transmitting buffer size information in wireless communication system

The present invention relates to a method for performing a random access procedure by a user equipment in a wireless communication system. In particular, the method includes transmitting a first number of random access preambles; detecting a second number of random access responses corresponding to the first number of random access preambles; and transmitting an payload using one uplink grant for which a listen before talk (LBT) procedure is firstly successful among a second number of uplink grants included in the second number of random access responses.

Method and apparatus for performing random access procedure for unlicensed band n wireless communication system

A method and apparatus for confirmation of multiple configured grants for sidelink in a wireless communication system is provided. A wireless device receives activation command or deactivation command on Physical Downlink Control Channel (PDCCH) for at least one of the multiple configured grants. A wireless device receives transmits, to the network, a confirmation Media Access Control (MAC) Control Element (CE). The confirmation MAC CE includes one or more fields in a bit group of which size is equal to number of the multiple configured grants. Each field in the bit group is set to (i) zero to indicate deactivation for each of the multiple configured grants or (ii) 1 to indicate activation for each of the multiple configured grants. Each field in the confirmation MAC CE except the bit group is ignored.

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Seoul, South Korea

Jayeong Kim