Electronics and Telecommunications Research Institute

Jin Suk Ma

Hye Jin Kim

Hyung Seok Lee

Jae Ho Lee

Cheol Ryu

Seok Jin Yoon

Choong Bum Park

Won Tae Kim

Sun Ja Kim

Do Hyeung Kim

Jae Pyeong Kim

Hwan Gu Lee

Min Hong Yun

Byung Chul Tak

An apparatus for providing information about an available service using a proxy server and a method thereof. The apparatus includes an available service checker, a database, an available service searcher, and an available service broadcaster. The apparatus may provide information through the proxy server regarding available services of a device that is not currently connected to a basic service set (BSS), thereby preventing generation of excessive amount of traffic.

Apparatus for providing information about available service using proxy server and method therefor

Disclosed is a message communication method of transmitting and receiving a certain message, independently of any network, without privacy invasion issues. The method includes generating vendor specific data on the basis of input information, adding the generated vendor specific data to a P2P information element of a probe request frame, and transmitting the probe request frame to another message communication apparatus. Thus, an apparatus conforming to a Wi-Fi Direct standard may transmit/receive a certain message to/from another terminal independently of a use region, a use environment, and a network of a large telecommunication vendor, without privacy invasion issues.

WI-FI direct-based message communication methods and apparatus

A transmission apparatus having a plurality of network interfaces and a transmission method using a plurality of the network interfaces are provided. The transmission apparatus includes: a session information extraction unit which extracts session information of an IP packet; a network interface determination unit which determines a network interface associated with session information of the IP packet based on a table for mapping sessions to the network interfaces according to available bandwidths of the network interfaces; and a traffic distribution unit which transmits the IP packet to the determined network interface. Accordingly, traffic is distributed over a plurality of network interfaces, so that optimal communication performance can be ensured in a simultaneous multiple-mode connection environment, and network resources can be efficiently utilized.

Transmission apparatus having a plurality of network interfaces and transmission method using the same

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Daejeon, South Korea

Jin Suk Ma