Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Samsung Electro-mechanics Co., Ltd.

Seoul National University

Sungkyunkwan University

Postech Academy-industry Foundation

Hongik University Industry-academia Cooperation Foundation

Sang-Wook Kwon

In-sang Song

Hyun-Jeong Kang

June Hwang

Jong-seok Kim

Sang-Hun Lee

Che-Heung Kim

Young-Bin Chang

Kyung-Kyu Kim

Anil Agiwal

Sung-Bum Park

Kyung-Woo Lee

Jong-Hyung Kwun

Dong-kyun Kim

Yun-kwon Park

Ki-Young Kim

Jae-Hyun Park

Jung-Soo Jung

Il-Jong Song

Sun-Heui Ryoo

Sung-Ku Yeo

Chang-seung Lee

Seok Lee

Dong-Ho Cho

Ki-Young Han

Kangwon Lee

Hee-Won Jung

Kang-Ho Byun

Beom-Sik Bae

Yong-Seok Kim

Sang-Jin Kim

Ji-Hyun Park

Sung-Jin Lee

Chang-Hyun Lee

Yeong-Moon Son

Jae-Hee Cho

Sang-Ho Kim

Jung-Hoon Lee

Jung-Shin Park

Dae-Hyun Kim

Hong-Jae Shin

Kyung-Joo Suh

Dong-Kyun Kim

Young-tack Hong

Young-Joong Mok

Young-tack Houng

Sang-Kyu Baek

Suk-Won Kim

Young-Hoon Min

Duck-hwan Kim

Hee-moon Jeong

Byoung-Hee Lee

Dong-Zo Kim

Young-Ho Ryu

Ja-nam Ku

Seung-jin Oh

Byung-jik Kim

Sang-ho Kim

Jun-o Kim

Phillip Lee

Seung Seob Lee

Seok-chul Yun

Ji-Hoon Jung

Eun-seok Park

Sung-hoon Choa

Hyung Ki Choi

Do-Won Kim

Sung-Kweon Park

Jung-Eun Lee

Ha-Kyung Jung

Bong-Chul Kim

Jae-Seok Park

Kuang-Woo Nam

Jae-Woo So

Moon-chul Lee

Ho-seong Seo

Young-jun Park

Dong-Soo Lee

Kang-yoon Lee

Jong-hwa Won

Jae-Gon Lee

Eun-sung Lee

Hae-seok Park

Chul-soo Kim

Jong-Seok Kim

Chang-Yeong Kim

Byung-Jik Kim

Keum-Su Song

Jin-hyoung Park

Bong-Jhin Shin

Gun-Woo Moon

Won-Keun Kong

Kyu-sub Kwak

Chang-won Jung

Byung-Hoon Kang

Dong-ha Shim

Song-cheol Hong

Sang-Chul Sul

Bum-Man Kim

Kook-hyun Sunwoo

The objective of the present invention is to provide services by effectively switching, by a terminal, a macro cell and a small cell on the basis of time in a communication system in which the macro cell and the small cell coexist. A method for operating a terminal in a wireless communication system comprises the steps of: transmitting, to a first base station and/or a second base station, information on a switching delay time required for the terminal to perform cell switching; and communicating through a resource of the first base station and a resource of the second base station which are allocated by considering the switching delay time.

Apparatus and method for allocating resources for switching between macro cell and small cell in wireless communication system

A wireless power receiver is for receiving power from a wireless power transmitter, the wireless power receiver may include at least one of: resonant circuitry; communication circuitry; and a controller configured to at least one of: enable a charging function to receive, through the resonant circuitry from the wireless power transmitter, first power for charging the wireless power receive, transmit, through the communication circuitry, a first signal indicating complete charge to the wireless power receiver while receiving the first power, receive, through the communication circuitry, a first charging function control signal that disables a charging function from the wireless power transmitter, based on the receiving of the first charging function control signal, disable the charging function, after disabling the charging function, identify that charging is required, transmit, through the communication circuitry, a second signal including information which is, by the wireless power receiver, set based on identifying that the charging is required to the wireless power transmitter, receive, through the communication circuitry, a second charging function control signal, and based on the receiving of the second charging function control signal, enable the charging function without outputting the indication related to the charging.

Wireless power transmitter and wireless power receiver, and operation methods therefor

A wireless power receiver, and control methods thereof are provided. The wireless power receiver includes a communication module; and a controller. The controller is configured to identify whether a near-field communication (NFC) tag is detected, wherein the NFC tag is external to a wireless power transmitter and the wireless power receiver, and transmit, by using the communication module, a signal indicating whether the NFC tag is detected to the wireless power transmitter.

Wireless power transmitter, wireless power receiver, and control methods thereof

A wireless power transmitter includes an antenna and a processor configured to control the antenna to respectively transmit detection powers in a plurality of directions, the detection powers including a first detection power and a second detection power, the first detection power including a first direction information and identification information of the wireless power transmitter, the first detection power being transmitted in a first direction, the second detection power including a second direction information and the identification information of the wireless power transmitter, the second detection power being transmitted in a second direction different from the first direction; control to receive a communication signal including the first direction information and the identification information of the wireless power transmitter from an electronic device which received the first detection power; and based on receiving the communication signal, control the antenna to transmit power for charging in the first direction.

Wireless power transmitter, electronic device and controlling method thereof

Disclosed is a 5G or pre-5G communication system for supporting a data transmission rate higher than that of a 4G communication system such as LTE. A method for communicating with user equipment (UE) by a base station is disclosed. The method comprises the steps of: identifying a type of one or more services required by the UE; notifying the UE of information on a configuration of a medium access control (MAC) layer and a physical (PHY) layer configured according to the identified type of one or more services; and communicating with the UE on the basis of the information on the configuration of the MAC layer and the PHY layer configured according to the identified type of one or more services.

Method and apparatus for implementing wireless protocol configurable according to services and devices

In various embodiments, a metamaterial structure antenna may comprise: a feed line for feeding a signal; a ground plane comprising a cross-shaped aperture forming circular polarization on the basis of a magnetic field induced by the fed signal; and a patch plane formed parallel to the ground plane which emits electromagnetic waves on the basis of the circular polarization.

Metamaterial structure antenna and metamaterial structure array

An electronic device performing communication with a powerless sensor is provided. The electronic device includes a wireless charging module configured to wirelessly transmit power to a powerless sensor; and a communication module configured to receive data that is sensed in the powerless sensor using the wirelessly transmitted power.

Electronic device for operating powerless sensor and control method thereof

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). A method for processing a radio link failure (RLF) by a user equipment (UE) supporting a dual-connectivity communication system is provided. The method includes determining a state of a radio link with a first base station using a reference signal, transmitting to a second base station, when the radio link with the first base station fails, a message indicating that the radio link with the first base station fails, redetermining the state of the radio link with the first base station using a reference signal of the first base station during a predetermined time, and switching, after the predetermined time, a data transmission line when the radio link with the first base station fails.

Radio link failure processing method and apparatus therefor

A wireless power transmitter, a wireless power receiver, and control methods thereof are provided. The wireless power transmitter includes a Near-Field Communication (NFC) antenna for NFC, a power supply, a NFC module, a resonator that wirelessly transmits power to a wireless power receiver, and a controller that controls the power supply to apply a beacon power for detecting an impedance change that is caused by placement of the wireless power receiver on the wireless power transmitter, to the resonator during a first time period, and controls the NFC module to apply NFC tag detection power to the NFC antenna during a second time period.

A wireless power transmitter according to various embodiments of the present invention can comprise a plurality of patch antennas, a coil, and a processor. The processor can control such that an electronic device is detected, the plurality of patch antennas and/or the coil is selected as a power transmission circuit for transmitting power for charging the electronic device, and power is transmitted by means of the plurality of patch antennas and/or the coil in accordance with the selection.

Wireless power transmitter, electronic device receiving power wirelessly, and method for operating same

A power amplifier may comprise: an element for amplifying an electrical signal received through an input terminal, and outputting the amplified electrical signal through an output terminal; a first impedance adjustment circuit connected to the input terminal of the element and adjusting impedance with respect to a frequency of a fundamental component at the input terminal; a second impedance adjustment circuit connected to the input terminal of the element and adjusting impedance with respect to a frequency of a multiplied harmonic component at the input terminal; a third impedance adjustment circuit connected to the output terminal of the element and adjusting impedance with respect to the frequency of the fundamental component at the output terminal; a fourth impedance adjustment circuit connected to the output terminal of the element and adjusting impedance with respect to the frequency of the multiplied harmonic component at the output terminal; a first frequency separation circuit which prevents an impedance change by the first impedance adjustment circuit with respect to the frequency of the multiplied harmonic component at the input terminal, and prevents an impedance change by the second impedance adjustment circuit with respect to the frequency of the fundamental component at the input terminal; and a second frequency separation circuit which prevents an impedance change by the third impedance adjustment circuit with respect to the frequency of the multiplied harmonic component at the output terminal, and prevents an impedance change by the fourth impedance adjustment circuit with respect to the frequency of the fundamental component at the output terminal.

Power amplifier and impedance adjustment circuit

An electronic device is provided. The electronic device includes a receiving circuit configured to wirelessly receive power and output AC power, a rectifying circuit configured to rectify the AC power from the receiving circuit, wherein the rectifying circuit may include a first P-MOSFET configured to transfer a positive amplitude of power to an output terminal of the rectifying circuit while the AC power has the positive amplitude and to prevent transferring a negative amplitude of power to the output terminal of the rectifying circuit while the AC power has the negative amplitude, and a forward loss compensating circuit connected with the first P-MOSFET configured to reduce a threshold voltage of the first P-MOSFET while the AC power has the positive amplitude.

Electronic device for wirelessly receiving power and method for operating the same

A power providing device according to an embodiment of the present disclosure comprises a charger configured to adjust at least one of a voltage and a current of power provided from a power supplying source and to provide the adjusted power to an electronic device and a processor configured to receive, from the electronic device, at least one of identification information of the electronic device and information related to a battery of the electronic device, and to control the charger to adjust at least one of the voltage and the current of the power using at least one of the identification information about the electronic device and the information related to the battery of the electronic device.

Power providing device, electronic device for receiving power, and method for controlling the same

Growing community of inventors

Seongnam-si, South Korea

Sang-Wook Kwon