Lg Electronics Inc.

Samsung Sds Co., Ltd.

Seoul National University

Ulsan National Institute of Science and Technology

Kookmin University Industry Academy Cooperation Foundation

Joohee Lee

Seungwoo Ryu

Junyoung Jung

Wonwoo Lee

Suhwan Lim

Sangwook Lee

Jaewon Lee

Jaehyuk Jang

Manyoung Jung

Sangjo Park

Youngryoul Kim

Jaewan Kim

Jinyup Hwang

Hyungjung Kim

Yoonoh Yang

Taeho Lee

Changil Kim

Kyu Young Choi

Jihoon Cho

Ansun Hyun

Duhyeong Kim

Junghee Cheon

Eunkyung Kim

Jaeseung Han

Youngjik Lee

Aaram Yun

Jihoon Kwon

Dong-Guk Han

A ciphertext comparison method according to an embodiment is performed by a processor in a computing apparatus, and the method includes an operation of segmenting a first ciphertext and a second ciphertext into m part bitstreams (in this instance, m is a natural number satisfying 1<m), respectively; an operation of extracting a value corresponding to a j−1part bitstream (in this instance, j=i+1, i is a natural number satisfying 0≤i≤m−1) of the first ciphertext and a j−1part bitstream of the second ciphertext, as a jintermediate value between a first value and a second value in a first lookup table including the first value and the second value of which Hamming weights are identical; an operation extracting a value corresponding to the jintermediate value and a j−1result value, as a jresult value between a third value and a fourth value in a second lookup table including the third value and the fourth value of which Hamming weights are identical; and in a case of j≠m, an operation of repeatedly performing extraction as the jintermediate value and extraction as the jresult value by increasing J; and in a case of j=m, an operation of outputting an mresult value as a result value of comparison between the first ciphertext and the second ciphertext.

Apparatus and method for ciphertext comparison capable of preventing side channel attack

A learning with errors (LWE) instance management method according to an embodiment may include obtaining, from one or more user devices among a plurality of user devices, one or more learning with errors (LWE) instances and one or more extended LWE instances including reuse tags associated with the LWE instances, storing the one or more extended LWE instances, receiving, from a first device among the plurality of user devices, a request for an LWE instance produced by a second device among the plurality of user devices, and identifying, based on a reuse tag included in each of the one or more extended LWE instances, a target extended LWE instance including an LWE instance produced by the second device among the one or more extended LWE instances, and providing the LWE instance included in the target extended LWE instance to the first device.

Method and apparatus for managing LWE instance

An electronic device having an antenna, according to the present invention, comprises a cone antenna comprising: a cone radiator which is provided between a first substrate and a second substrate, the upper part of which is connected to the first substrate and the lower part of which is connected to the second substrate, and which has an opening at the top thereof; a metal patch which is formed on the first substrate so as to be separated from the top opening; a second metal patch which is formed so as to be separated from the metal patch; and a shorting pin which is formed so as to electrically connect the second metal patch and a ground layer of the second substrate, thereby providing a cone antenna having a plurality of metal patches that operate in a wide frequency band from a low frequency band to a 5G sub 6 band.

Electronic device having antenna

Provided is an electronic device having an antenna according to the present invention. The electronic device comprises a cone antenna comprising: a cone radiator which is provided between a first substrate and a second substrate, has the upper part connected to the first substrate and the lower part connected to the second substrate, and has an opening on the upper part; a metal patch which is formed on the first substrate and is positioned away from the upper opening; a shorting pin which is for electrically connecting the metal patch and a ground layer of the second substrate; a power feeding unit which is formed on the second substrate and is for transmitting a signal via a lower opening; and a dielectric which is formed in a cylindrical shape so as to surround the lower opening.

A disclosure of the present specification provides a user equipment (UE) supporting a Dual Connectivity (DC) with Evolved Universal Terrestrial Radio Access (E-UTRA) and New Radio (NR). The UE may include a transceiver configured with the DC and configured to transmit an uplink signal and receive a downlink signal; and a processor configured to control the transceiver. Wherein based on (i) that the E-UTRA includes at least E-UTRA operation band 41, (ii) that the NR includes at least NR operation band 41, and (iii) that a band to be protected is a first band, the transceiver may be configured with a predetermined maximum level of a spurious emission.

User equipment for supporting EN DC, and control method therefor

A vehicle provided with an antenna according to the present invention comprises: a conical array antenna in which cone radiators are arranged at certain intervals, wherein the cone radiators are provided between a first substrate and a second substrate and have upper portions connected to the first substrate, lower portions connected to the second substrate, and openings at the upper portions thereof; a patch array radiator which is formed on the first substrate and in which metal patches formed to be separated from the top openings are arranged; shorting pins formed so as to electrically connect the metal patches and a ground layer of the second substrate; and a transceiver circuit for controlling a signal to be radiated through at least one of the conical array antennas, thereby improving a signal reception performance in almost any direction of the vehicle.

Broadband antenna mounted on vehicle

An electronic device according to the present invention can comprise: a first multilayered printed circuit board (PCB) including a transmitting/receiving unit circuit; a second multilayered PCB including an antenna; and a connector for connecting the first multilayered PCB and the second multilayered PCB to each other, and thus the present invention provides a connector and an electronic device that are capable of reducing an insertion loss when an antenna and a transmitting/receiving circuit are vertically connected in a millimeter-wave band.

Electronic device having connector

Provided is a cone antenna assembly according to the present invention. The cone antenna assembly comprises: a first substrate; a second substrate which is spaced a certain distance from the first substrate and provided with a ground layer; a cone emitter which is provided between the first substrate and the second substrate and has an upper portion connected to the first substrate, a lower portion connected to the second substrate, and an opening section provided in the upper portion; and an antenna frame which is made of a dielectric material and configured to be fastened to the second substrate together with the cone emitter. The present invention can provide a cone antenna assembly that operates in a wide frequency bandwidth from a low frequency bandwidth to a 5G Sub 6 bandwidth, and enhance the convenience of assembling the cone antenna assembly.

Cone antenna assembly

An electronic device with an antenna, according to the present invention, has a cone antenna comprising: a cone radiator which is provided between a first substrate and a second substrate, has the upper part thereof connected to the first substrate and the lower part thereof connected to the second substrate, and has an opening at the upper part; a metal patch formed on the first substrate and spaced apart from the upper opening; and a shorting pin formed to electrically connect the metal patch and a ground layer of the second substrate. The electronic device may further comprise a transceiver circuit which is connected to the cone radiator via a feed and controls so as to radiate a signal via the cone antenna. Accordingly, the size of the entire antenna can be minimized by arranging the metal patch on only one side of the upper opening of the cone antenna.

Electronic device with antenna

An antenna system mounted in a vehicle according to the present invention comprises: a metal plate that forms a part of the exterior of the antenna system and operates as a radiator; a lower substrate disposed on the lower portion of the metal plate; and a first antenna comprising a feeding part disposed on the front surface of the lower substrate and configured to transmit a signal to the metal plate through a metal supporter, and a shorting pin configured to connect the ground of the lower substrate and the metal plate. In addition, the system comprises a second antenna that is disposed in the antenna system and is separately provided from the first antenna.

Antenna system mounted in vehicle

An electronic device having an antenna, according to the present disclosure, includes: a first cone radiator which is provided between a first substrate and a second substrate, the upper part of which is connected to the first substrate and the lower part of which is connected to the second substrate, and which has an opening at the top thereof; a metal patch which is formed on the first substrate so as to be separated from the top opening; a second cone radiator which is provided between the first substrate and the second substrate, the upper part of which is connected to the first substrate and the lower part of which is connected to the second substrate, and which has an opening at the top thereof; and a shorting pin which is formed to electrically connect the metal patch and a ground layer of the second substrate.

An electronic device according to the present invention comprises: a first multi-layer printed circuit board (PCB) including a transceiver circuit; a second multi-layer PCB including an antenna; and a connector configured to connect the first multi-layer PCB and the second multi-layer PCB to each other, wherein the first and the second multi-layer PCB include signal transmission lines configuring a vertical connection for signal transfer between different layers, and include multiple adjacent ground patterns configuring a vertical ground connection between the different boards. In order to improve the matching characteristic between the vertically connected signal transmission lines, window regions from which a metal pattern is eliminated are formed at the same positions in different layers of the first and the second multi-layer PCB between the adjacent ground patterns. Therefore, the present invention can provide the connector and the electronic device providing an optimal matching characteristic in vertically connecting the antenna and the transceiver circuit in mmWave bands.

Electronic device including connector

A disclosure of the present specification provides a user equipment (UE) supporting a Dual Connectivity (DC) with Evolved Universal Terrestrial Radio Access (E-UTRA) and New Radio (NR). The UE may include a transceiver configured with the DC and configured to transmit an uplink signal and receive a downlink signal; and a processor configured to control the transceiver. Wherein based on (i) that the E-UTRA includes at least E-UTRA operation band, (ii) that the NR includes at least NR operation band, and (iii) that a band to be protected is a first band, the transceiver may be configured with a predetermined maximum level of a spurious emission.

Provided is a method for transmitting and receiving a signal by a terminal supporting dual-connectivity between evolved universal terrestrial radio access (E-UTRA) and new radio (NR). In the method, when the terminal is configured to aggregate at least two carriers and when the at least two carriers include one of E-UTRA operating bands 1, 3, 19, and 21 and at least one of NR operating bands n78 and n79, an uplink center frequency of a first carrier among the at least two carriers is a first value and a downlink center frequency of the first carrier is a second value, a predetermined maximum sensitivity degradation (MSD) is applied to a reference sensitivity used for reception of the downlink signal.

Method for transmitting and receiving signal by terminal supporting dual-connectivity between E-UTRA and NR and terminal performing the method

The computer-implemented method for generating a public key and a secret key of the present disclosure comprises determining, by a processor, the secret key (s) by sampling from a distribution over {&#x2212;1, 0, 1}; determining, by a processor, a first error vector (e) by sampling from (D)and a second error value (e') by sampling from D; choosing, by a processor, a randomly uniform matrix A which satisfies A&#xb7;s=e (mod q); choosing, by a processor, a random column vector b which satisfies and determining, by a processor, the public key (pk) by (A&#x2225;b)&#x2208;R.

Growing community of inventors

Seoul, South Korea

Joohee Lee