Osong Medical Innovation Foundation, Korea University Research and Business Foundation

Samsung Electronics Co., Ltd.

Samsung Electro-mechanics Co., Ltd.

Gangneung-wonju National University Industry Academy Cooperation Group

Sun-shin An

Jung-ho Kim

Kyung-Ho Park

Sung-Jun Kim

Woo-shik Kang

Ji-Hoon Lee

Sang-Bin Lee

Seon-Wook Kim

Young-hwan Jung

Doo-hyun Ko

Won-Jong Noh

Bumjin Kim

Sea Young Ahn

Heung-Woo Nam

Jun-Heung Ku

The apparatus for controlling a backbone network according to the present invention comprises: a context-interpreting unit, which interprets the request for a service of a sensor node, and generates a session containing routing information; a sensor node registration unit, which stores sensor node information and routing information, and which provides routing information; a gateway, which transmits the service request using routing information, and which receives a response message; and a message-processing unit, which transmits the service request, and which provides the response message.

Apparatus and method for controlling a backbone network for a sensor network

A sensor node management system in a Radio Frequency Identification/Ubiquitous Sensing Network (RFID/USN) infrastructure is provided, in which a sensor node has a local ID in a sensor network, a gateway receives, from the sensor node, node information including the local ID and an ID of a home gateway to which the sensor node initially belongs and registers the node information about the sensor node to a location information server, and the location information server registers and manages node information about sensor nodes within an area of the gateway. The location information server generates a global ID using the local ID and the ID of the home gateway, the global ID being recognized as an address of the sensor node by an Internet Protocol (IP) network.

System and method for managing sensor node in RFID/USN infrastructure and gateway system used therefor

Disclosed is a method and apparatus for collision avoidance in a sensor network. The method includes transmitting data by a transmitter; comparing, by the transmitter, a remaining time between the data transmission and a backoff period with a turnaround time taken for the transmitter to switch from a transmit (Tx) mode to a receive (Rx) mode; selectively transmitting, by the transmitter, a busy signal indicating that a channel is in use, according to the comparison result; and receiving, by the transmitter, an acknowledgement (ACK) signal from a receiver after the turnaround time has elapsed.

Method and apparatus for collision avoidance in sensor network

An underwater wireless communication system and method includes a sensor node for transforming measured underwater data into ultrasound signals, and transmitting the transformed ultrasound signals and receiving other ultrasound signals.

System and method for underwater wireless communication

Method for rapidly detecting identifier (ID) of tags, by radio frequency identification (RFID) reader in communication system that includes RFID reader and at least two tags communicating with RFID reader, is provided. RFID reader generates a prefix when IDs contained in at least two messages received collide with each other, prefix including a first colliding bit, which is set to '0' or '1', from high-order bits and non-colliding high-order bits. RFID reader sends a first message containing information that requests transmission of an assigned ID in a preset transmission period when the bits of the generated prefix match bits corresponding to the prefix, in the assigned ID. Tags receive a first message that contains a prefix including at least one bit, and sends a second message containing an assigned ID during a preset transmission period when the bits of the prefix match bits corresponding to the prefix, in assigned ID.

Anti-collision method and system using optimized binary search tree

A method for establishing a path between nodes in a wireless network system. A source node broadcasts a route request (RREQ) packet for a destination node. A mobile node between the source node and the destination node, upon receiving the RREQ packet, appends a redundancy degree with respect to an adjacent node to the RREQ packet and broadcasts the RREQ packet. The destination node selects an optimal path by checking the redundancy degree received along each path when the RREQ packet is received along multiple paths, and the destination node establishes an optimal path to the source node by transmitting a route reply (RREP) packet along the optimal path. Accordingly, the path is established suitable for the quality of service of data to be transmitted and a lost path is promptly recoverable by reference to information stored at each mobile node identifying redundant paths available to the mobile node.

Network system for establishing path using redundancy degree and method thereof

Growing community of inventors

Seoul, South Korea

Sun-shin An