Abstract:
PURPOSE: A home sensor network server is provided to convert a received sensor message into a text message and transmit the converted text message to a messenger application. CONSTITUTION: A communication interface(210) transmits and receives a text message to and from a mobile terminal and is connected to the Internet. An USN(Ubiquitous Sensor Network) interface is connected to a USN, and transmits and receives a sensor message to and from a sensor through the USN. A control unit(230) executes an sensor application(240) and a messenger application(250).
Abstract:
PURPOSE: An LBA(LoWPAN(Low power Wireless Personal Area Network) Bootstrapping Agent) device and a LoWPAN bootstrapping system are provided to construct efficient LoWPAN. CONSTITUTION: A transceiver(210) communicates with an LBS(LoWPAN Bootstrapping Server) or an LBD(LoWPAN Bootstrapping Device) which can be directly connected to the transceiver. A message processing unit(230) receives an LBA request message from the LBD through the transceiver, and transmits an LBA advertising message. The message processing unit receives an LBP(LoWPAN Bootstrapping Protocol) from the LBD, and determines the joining of the LBD by transmitting the LBP message to the LBS.
Abstract:
A sensor network system is provided to enable a sensor node to automatically generate a web page based on sensing data, thereby enabling web communication with the sensor node. A sensor node(124) receives a web page transmission request. The sensor node automatically produces a web page based on sensing data. The sensor node transmits the generated web page to a computing system transmitting a web page transfer request. The sensor node includes the following units. A web page generating unit(240) automatically produces the web page based on the sensing data. An HTTP(HyperText Transfer Protocol) protocol stack(250) transmits the web page transfer request to the web page generating unit. The web page is transmitted to the computing system.
Abstract:
A method and a device for setting the group of mobile nodes are provided to set the group of the mobile node quickly and conveniently by setting mobile nodes in classified sub areas as manager nodes and group nodes. A plurality of mobile nodes making a group is classified into a first/second area based on a user parameter(S210). The mobile nodes is formed as one group by transmitting same group identifier to the mobile nodes(S220). The mobile nodes is set as manager nodes or group member nodes by transmitting each of the sub group identifiers to the mobile nodes located in the first/second area(S230).
Abstract:
PURPOSE: A network managing method for reducing congestion of a wireless network and a system thereof are provided to distribute traffic in a wireless sensor network, thereby stably managing a total network. CONSTITUTION: Each of multiple gateways corresponds to one cluster. Each of the multiple gateways checks the degree of congestion. A central server (110) receives the degree of congestion from the multiple gateways. The central server distinguishes a congested gateway from the multiple gateways. At least more than one of the multiple gateways calculates an available buffer size and a packet reception capability and transmits calculated information to the central server. [Reference numerals] (AA) Gateway
Abstract:
제 1 센서 노드 그룹에서 움직이는 표적을 추적하는 방법은 움직이는 표적을 감지하여 감지된 표적의 위치를 계산하는 단계, 감지된 표적의 속도 및 감지된 표적의 요각(Yaw angle)을 계산하는 단계, 계산된 표적의 위치, 속도 및 요각을 기초로 표적의 다음 위치를 예측하는 단계, 및 예측된 다음 위치에 가장 인접한 센서 노드 및 계산된 요각을 기초로 선택된 적어도 2 개의 센서 노드들을 활성화시키는 단계-가장 인접한 센서 노드와 적어도 2 개의 센서 노드들은 제 2 센서 노드 그룹을 형성함-를 포함한다. 따라서 정확하게 표적의 다음 위치를 예측할 수 있다.
Abstract:
LoWMob(LoWPAN Mobility: Low power Wireless Personal Area Network) 시스템은 PAN(Personal Area Network) 내에배치되고 PAN 식별자를포함하는비콘(beacon)을전송하는외부및 내부보더노드들 -상기내부및 외부보더노드들은준-수면상태(quasi-sleep state)에서는송수신기를턴-오프시키고액티브상태에서는상기비콘을상기모바일노드에전송하며, 상기외부보더노드는상기내부보더노드보다자주상기비콘을전송함-, 상기 PAN 내에서이동할수 있고, MST(Maximum Sleep Time)까지데이터송신또는수신이발생하지않은경우에는상기내부또는외부보더노드에상기 PAN 식별자를요청하는모바일노드 -상기 MST는상기모바일노드의이동속도에따라가변적으로변경됨- 및상기 PAN 내에서전송범위가오버랩될정도까지조밀하게배치되어있고상기모바일노드의이동방향을측정할수 있는적어도하나의센서노드 -상기적어도하나의센서노드중 적어도하나는연관센서노드로동작하고상기적어도하나의연관센서노드는상기모바일노드와의거리를측정함-을포함한다.
Abstract:
PURPOSE: A LoWMob(LoWPAN Mobility(Low power Wireless Personal Area Network)) system and DLoWMob system are provided to transmits a neighboring information message and an identifier about a sensor node. CONSTITUTION: Outside and inside border nodes are arranged within a PAN(Personal Area Network). The outside and inside border nodes transmit beacon including PAN identifier. The outside and inside border nodes turns off a transmitter in a quasi-sleep state. A mobile node moves within PAN. The MST is changed according to the movement speed of the mobile node.