Samsung Electronics Co., Ltd.

Electronics and Telecommunications Research Institute

Seoul National University

Kwangwoon University Industry-Academic Collaboration Foundation

Ji-Hoon Yun

Byung Jang Jeong

Tetsuo Ariyoshi

Cheon-ho Park

Byeong-hyeon Yu

Jae-Han Lim

Woo Jin Byun

Ki-Ho Cho

Ji-Cheol Moon

Hwanwoong Hwang

Wisnu Murti

A backscatter communication method and apparatus based on pattern-based demodulation is disclosed. The backscatter communication method includes receiving a communication signal, and demodulating the communication signal based on a slope of the communication signal at an edge of each time interval.

Method and apparatus for backscatter communication of pattern-based demodulation

Disclosed are a communication method and communication apparatus using an ambient backscatter communication. A transmission apparatus may include generating a plurality of bitsets by fragmenting data based on a predetermined bitset length, mapping the plurality of bitsets to a plurality of switching patterns based on a data size, and controlling a reflection of a background radio frequency (RF) signal based on a corresponding mapped switching pattern, a total number of the plurality of switching patterns may be determined based on the bitset length, and each of the plurality of switching patterns may have a different length.

Communication method and communication device using ambient backscatter communication

A bulb-type semiconductor light-emitting device lamp having wide light distribution characteristics which are similar to those of a typical incandescent bulb is provided. The semiconductor light-emitting device lamp includes: a plurality of light-emitting devices that are arranged such that light is emitted therefrom toward a central axis of the bulb-type semiconductor light-emitting device lamp. Also, the bulb-type semiconductor light-emitting device lamp includes a heat dissipation structure having a plurality of installation surfaces that surround the central axis and are separated from each other, wherein each of the plurality of light-emitting devices includes one or more light-emitting devices.

Bulb type semiconductor light-emitting device lamp

A lighting device including: a light-emitting device unit including one or more light-emitting devices; a first reflector which faces the light-emitting device unit and reflects light emitted from the light-emitting device unit; and a second reflector which faces the first reflector and reflects light reflected by the first reflector.

Lighting device capable of emitting light with a wide angle

A terminal, a method for operation of the terminal, and a method of interworking in a wireless communication system including an advanced network and a legacy network are provided. The method for operating the terminal includes monitoring a paging channel of the legacy network for a data paging message and a Circuit Switched (CS) paging message, when the terminal is in an idle state, receiving one of the CS paging message and data paging message, establishing a connection with the legacy network corresponding to the received one of the CS paging message and data paging message, wherein a CS voice connection is established with the legacy network if the CS paging message is received and a Packet Switched (PS) data connection is established with the legacy network if the data paging message is received, and performing a handover to the advanced network from the legacy network, if the PS data connection is established with the legacy network.

Terminal, method for operating the terminal, and method for interworking in wireless communication system including 3GPP LTE network and 3GPP legacy network

Growing community of inventors

Seoul, South Korea

Ji-Hoon Yun