Electronics and Telecommunications Research Institute

Kostarworld Co., Ltd.

Jung-Sook Kim

Byung-Tae Jang

Jong-Hyun Park

Jeong-Dan Choi

Kyung-Bok Sung

Dong-Yong Kwak

Jae-Han Lim

Dong-Kyoo Kim

Dong-Sun Lim

Kyeong-Tae Kim

Jae-Jun Yoo

Chang-Sub Shin

Ju-Wan Kim

Myung-Hee Son

Mi-Jeong Kim

Do-Hyun Kim

Disclosed herein is a method of providing vehicle wireless communication. In the method, a vehicle receives hand-over-related link information, which includes slot request information about slots requested by a vehicle to a roadside wireless communication device for hand-over of the vehicle, from a central control server. A hand-over preparation message, which includes the hand-over-related link information, is send to a vehicle wireless communication device connected to the vehicle. It is determined that the vehicle completed preparation for performance of the hand-over when a response message to the hand-over preparation message is received from the vehicle wireless communication device. Slots are allocated in consideration of the hand-over-related link information. Beacon frames, which include slot allocation information about the allocated slots, are transmitted to the vehicle wireless communication device. Accordingly, the vehicle wireless communication device and the roadside wireless communication device can reliably perform communication without interruption.

Method of providing wireless communication between vehicle and roadside and vehicle wireless communication device using the same

Disclosed herein are a multicasting system and method for a vehicular communication network. The multicasting system includes a plurality of roadside communication devices for communicating with a plurality of vehicular communication devices. Each of the roadside communication devices includes a communication unit for communicating with the plurality of vehicular communication devices and at least one neighboring roadside communication device, a beacon analysis unit for analyzing beacon frames when a slot allocation request is received from one of the vehicular communication devices, a determination unit for searching for a period in which a slot has not been allocated and determining whether a period for allocation of a slot to the vehicular communication device is present, and a slot allocation unit for allocating a slot period for multicasting of the vehicular communication device based on results of the determination of the determination unit.

Multicasting system and method for vehicular communication network

Provided are a reliability-based, real-time sensor network medium access control (MAC) communication system and method using a superframe. The superframe includes an active duration which is a time duration in which a communication is established, and a sleep duration which is a time duration in which no communication is established. The active duration includes a beacon block in which a plurality of beacon transmission nodes are respectively allocated beacon slots for transmitting a beacon frame, and a forwarding block in which each of sinks nodes is allocated a slot for unifying data regarding the sink node and data regarding sensor nodes managed by the sink node and transmit the result of unifying in order to establish a communication between the sink nodes and between each of the sink nodes and a base station.

Reliable and low-latency sensor network MAC system and method using superframe

Provided are a system and method for processing sensing data from a sensor network. The system includes: a data processing condition managing unit for storing sensing data processing conditions; a data processing function managing unit for storing sensing data processing function information; a processed data managing unit for storing processed sensing data; a data pattern managing unit for storing sensing data pattern information; an acquired data managing unit for storing sensing data; a data acquisition condition managing unit for storing sensing data acquisition conditions; a user requirement acquiring unit for acquiring the sensing data acquisition conditions; a data acquiring unit for acquiring sensing data; a data pattern extracting unit for extracting the pattern of sensing data; a data generating unit for processing the sensing data; and a data processing unit for processing the sensing data.

System and method for processing sensing data from sensor network

A rental software providing system and a method thereof, and its rental software providing server and a wireless terminal are disclosed. The rental software providing system using a prefetching scheme includes: a wireless terminal for notifying a network connection state, and a hardware state of the wireless terminal to a rental software providing server in order to perform the prefetching scheme; and a rental software providing server for prefetching partial programs of a rental software to be used in the wireless terminal by using a prefetching managing unit and a pattern analyzer and transmitting the prefetched partial programs to the wireless terminal.

System and method for providing rental software, and rental software providing server and wireless terminal thereof

Aquarium water and a preparation method thereof, including a fermented solution of a mixture of extract from leaves of a ginkgo tree, extract from ganoderma, extract from bark of a chestnut tree, extract from acorns, extract from leaves of an evergreen oak tree, extract from bamboo, extract from leaves of a persimmon tree, extract from leaves of a pine tree, water-soluble chitosan powder extracted from crab shells, barley natural stone powder, bamboo salt, potato starch, and distilled water. Fermentation is by adding yeast, and organic germanium, mineral component extracted from yellow soil, and extract from combustion of an oak tree are added. The solution is then fermented again and refined in a liquid state.

Functional aquarium water and a preparation method thereof

Growing community of inventors

Seoul, South Korea

Jung-Sook Kim