Samsung Electronics Co., Ltd.

Yonsei University

K-cera, Inc.

Hyung-Jong Kim

Jong-han Lim

Seong-Wook Song

Daesik Hong

Sang-Wook Suh

Beomju Kim

Ki-Duk Koo

Sung-Mook Lim

Dong-Seok Chang

A method for operating a User Equipment (UE) is provided to minimize performance degradation due to a difference between a transmit power for D2B communication and a transmit power for Device to Device (D2D) communication. The method includes transmitting a signal for D2B communication to a Base Station (BS) and a signal for D2D communication to another UE in a first time period, and configuration for the D2D communication, when it is determined there is a difference between a transmit power for the D2B communication and a transmit power for the D2D communication.

Apparatus and method for controlling transmission for device to device (D2D) communication based on transmit power to a base station

An apparatus of a transmitter for signal processing in a wireless communication system is provided. The apparatus includes a first signal processing module set configured to process a first signal transmitted to a base station and a second signal processing module set configured to process a second signal transmitted to a terminal, wherein the first signal processed by the first signal processing module set has a different bandwidth than the second signal processed by the second signal processing module set.

Apparatus and method for processing signal for D2D communication in wireless communication system

A frequency-efficient antenna operation method is provided in a multiuser beamforming system. The method includes determining channel correlations and channel gain differences between channels using channel information received from multiple terminals, classifying the multiple terminals into at least one or more clusters using the channel correlations and channel gain differences, selecting a beamforming vector for each of the one or more clusters using the channel information of at least one or more terminals in the one or more clusters, allocating power to the terminals in each of the one or more clusters, and forming a beam based on the allocated power and the selected beamforming vector. According to the method, interference due to sharing space resources may be reduced and more efficient data communication may be achieved.

Method and apparatus for operating a non-orthogonal multiple access scheme in multiuser beamforming system

Disclosed is a helical antenna manufacturing apparatus and method. A controller controls a core driver and a roller driver to rotate a core and a roller according to an rpm which is pre-set according to diameters of the core and the roller, and controls the core driver to move the core in a longitudinal direction according to the moving speed which is set according to working frequency bands of the antenna. When the core and the roller are contacted, they are rotated in opposite directions, and as the roller is rotated, a paste in a paste box moves together with a surface of the core and is printed on the surface of the core. As the core is rotated and moved in the longitudinal direction, a helical line is formed on the core. Pitches of the helical line formed on the core is changed according to the moving speed of the core in the longitudinal direction, and the working frequency bands of the antenna are changed according to the pitches of the helical line. Also, a helical line unit including a plurality of helical lines having different pitches printed on the surface of the core can be formed by controlling the core driver to move the core in the longitudinal direction according to the moving speeds which are set for the respective steps according to the working frequency bands of the antenna.

Helical antenna manufacturing apparatus and method thereof

Growing community of inventors

Seoul, South Korea

Hyung-Jong Kim