Electronics and Telecommunications Research Institute

Jin-Kyeong Kim

Dae-Sik Kim

Nam-Hoon Park

Do-Hyung Kim

Woo-Yong Lee

Yong-Sun Kim

Jae-Ho Lee

Cheol Ryu

Hyung-Seok Lee

Kyeong-Pyo Kim

Disclosed herein are a Bluetooth connection device and method based on estimation of a relative angle. The Bluetooth connection method based on estimation of a relative angle is performed by a Bluetooth connection device based on estimation of a relative angle, and includes estimating relative angles using relative angle estimation information included in packets received from one or more communication target devices that are scanned for a Bluetooth connection, determining a communication target device with which a communication link is to be established based on the estimated relative angles, and establishing a communication link through a Bluetooth connection to the determined communication target device, and reestablishing the communication link to any one of additional communication target devices, relative angles of which have been estimated, depending on a change in a relative angle to the communication target device with which the communication link has been established.

Bluetooth connection device and method based on estimation of relative angle

The present invention includes a traffic information collection unit for collecting weight information of a vehicle running on a road and vibration and noise information generated on the road; a traffic jam determination unit for determining a traffic jam and traffic jam type based on the collected weight information, the vibration and noise information; a traffic jam information transceiving unit for transmitting the traffic jam information or the received traffic jam information of a front road to a vehicle on a rear road by receiving the traffic jam information of a front road from another apparatus for providing traffic jam information installed on the front road; and a display unit for displaying the determination result of the traffic jam determination unit, or a traffic condition of the front road.

Apparatus and method for providing traffic jam information, and apparatus for receiving traffic jam information for automobile

Disclosed is a method for automatically searching a wireless LAN AP (access point) in a terminal having a wireless LAN module, a mobile communication module, and a GPS receiving module installed therein. The method comprises: (a) acquiring location information of the wireless LAN AP provided in a service area of a base station from the base station connected through the mobile communication module; (b) consecutively tracking a current location of the terminal through the GPS receiving module; (c) determining a driving start time of the wireless LAN module through the location information of the wireless LAN AP acquired in (a) and the current location information of the terminal tracked in (b); and (d) driving the wireless LAN module to detect a beacon signal periodically output by the wireless LAN AP.

Method for automatically searching wireless LAN access point and terminal for processing the same

The present invention relates to a communication device that automatically searches for wireless local area network (WLAN) access points, and to a method thereof. The communication device includes a GPS receiving module () for receiving position information of the connection device from a GPS satellite; a WLAN module () for connecting with the WLAN access point; a storage unit () for storing position information of the WLAN access point; and a controller () for selectively operating the WLAN module based on the position information of the communication device output from the GPS receiving module () and the position information of the WLAN access point stored in the storage unit (). According to the present invention, a user terminal receiving data services through WLAN efficiently utilizes power. Also, the searching of the WLAN access points is performed automatically without the need for user manipulation.

Growing community of inventors

Daejeon, South Korea

Jin-Kyeong Kim