Sungkyunkwan University

Hyundai Motor Company

Samsung Electronics Co., Ltd.

Kia Motors Corporation

Kia Corporation

Yunmin Kim

Tae-Jin Lee

So Jin Lee

Kyoung Min Kim

Ji Hwon Kim

Jung-Je Son

Sung-Hoon Kim

Young-Kyo Baek

Mingyu Lee

Dong In Kim

Min Young Chung

Ho-Yeon Lee

Seung-Ri Jin

Ji Hyoung Ahn

Dongho Won

Eun-Jin Choi

Jun Suk Kim

Kwanyoung Moon

Jaewook Jung

Provided is random access method, performed by terminal for uplink data transmission during random access process between cellular based machine communication terminal and base station. The method includes performing random access process between cellular based machine communication terminal and base station, and the random access process includes selecting random access resource by considering coverage level and whether to support multi-tone transmission or not. Terminal can perform efficient random access process in response to coverage level, subcarrier spacing configuration, multi-tone configuration when machine communication terminal or machine communication device which operates in cellular based IoT system perform random access, number of repetition may be increased, when coverage level is changed, by minimizing the change in coverage level, and operation time of the terminal, due to standing by up to PRACH resource corresponding to the coverage level, may be reduced to reduce energy consumption and to enhance delay time performance.

Random access method considering a coverage level, subcarrier spacing configuration and/or multi-tone configuration in internet of things environment

A communication device of a vehicle transmits a charging permission request message to a server and receives charging permission information from the server. A charging requester is configured to transmit a charging request message including the charging permission information to a charging device and a power receiver is configured to receive a charging response message from the charging device and to wirelessly receive power from the charging device.

Vehicle that receives power wirelessly while the vehicle is moving, server for the same, and wireless charging system

An apparatus for controlling charging of an electric vehicle and a method therefor are provided. The apparatus includes a communication device that performs vehicle-to-everything (V2X) communication with a charging station management server outside the electric vehicle and a vehicle management server configured to manage shared vehicles and a processor that requests the charging station management server to reserve a charging station via the communication device and automatically requests the vehicle management server to reserve a shared vehicle to be used when the electric vehicle is charged, via the communication device, when a vehicle power for driving to a destination is insufficient.

Apparatus for controlling charging of electric vehicle and method therefor

Provided are wake-up radio systems and methods based on backscatter wake-up radio. The wake-up radio method based on backscatter wake-up radio includes setting an arbitrary receiving window period in a window setting period by receiving a beacon signal from a data collection apparatus, transmitting a backscatter response message to the data collection apparatus based on a reception time of a contention signal received from the data collection apparatus in the set receiving window period, in the window setting period, and receiving a wake-up signal from the data collection apparatus in the data transmission period to set as a wake-up period and transmitting data to the data collection apparatus based on a scheduling time according to a backscatter response message.

Wake-up radio systems and methods based on backscatter wake-up radio

Disclosed is a method by which a first terminal supports vehicle-to-everything (V2X) communication through a first data transmission, comprising the steps of: determining a wireless resource for a second data transmission of a second terminal; transmitting, to the second terminal, first data including information of the wireless resource; and receiving, by using the wireless resource, second data transmitted from the second terminal.

V2V interaction/V2IOT communication method and device

Provided is methods and apparatuses for scheduling service area in drone network environment. The method includes calculating a throughput in each section while changing a variable determining the number of sections within a maximum value of the variable and determining a variable, by which the calculated throughput becomes maximum, as an optimal value when a service area of the drone is divided into a plurality of sections, dividing the service area into a plurality of sections according to the determined optimal value and scheduling a service providing period of the divided service area, and communicating with a terminal located in the service area according to the scheduled service providing period. The present invention can enhance the networks throughput and energy-efficiency of drone networks.

Methods and apparatuses for scheduling service area in drone network environment

Disclosed herein is an operating method of a reader in a radio frequency identification (RFID) system. In the method, a reader operates in a tag information collection mode in which tag information is collected from a plurality of tags and a tag recognition mode in which a frame of a predetermined size calculated according to the number of tags operating in each frame is allocated based on the tag information and at least some of the plurality of tags are recognized.

Reader in RFID system, operating method of the reader, tag device, and operating method of the tag device

Disclosed herein is a method for collecting, by a vehicle information collection apparatus, vehicle accident information. The method includes receiving vehicle accident information including impact detection time information and location information from a plurality of vehicle communication terminals, determining whether a vehicle accident has occurred based on the received vehicle accident information, requesting a vehicle communication terminal which belongs to the plurality of vehicle communication terminals and which is related to the vehicle accident to send accident information based on a result of the determination, receiving encrypted image data related to the vehicle accident from the vehicle communication terminal related to the vehicle accident in response to the request, and decoding the received image data and storing the decoded image data along with the vehicle accident information.

Method and apparatus for transmitting vehicle accident information based on interaction between devices and method and vehicle accident information collection apparatus

Disclosed herein is a method of expanding, by a small cell BS, a transmission range in a heterogeneous network. The method includes estimating a number of success devices which successfully access a small cell BS through a contention based on an idle Random Access Opportunity (RAO) and comparing the estimated number of expected access device with an actual number of measured success devices and determining a transmission range expansion distance.

Growing community of inventors

Suwon-si, South Korea

Yunmin Kim