Abstract:
무선디바이스의에너지공유방법및 장치를제안한다. 특히, 에너지공유가가능한다른무선디바이스들과에너지를공유함으로써특정기기의전력이충분하기않은경우에도최소한의에너지전송으로특정기기에서의서비스를지원할수 있으며, 무선디바이스의어플리케이션서비스타임(application service time) 또는라이프타임(life time)을최대화할수 있는무선디바이스의에너지공유방법및 장치를제공할수 있다.
Abstract:
본 발명은 W개의 연속된 수퍼프레임(W consecutive superframes) 중 하나의 수퍼프레임을 선택하고, W개의 연속된 수퍼프레임의 각각을 시작(start)할 때, 상기 시작할 수퍼프레임이 상기 선택된 수퍼프레임이 아니면, 상기 수퍼프레임의 제1 시간 구간에서 비콘(beacon)을 전송하지 않고 상기 수퍼프레임을 시작하는 통신 장치를 제공한다. 비콘(beacon), 서비스 홀 문제(service hole problem), IEEE 802.15.4
Abstract:
PURPOSE: A packet routing apparatus and a method thereof are provided to minimize power consumption of each node in case each node of sensor network relays a data packet. CONSTITUTION: A transceiving unit(210) receives RTS(Request To Send) signal transmitted from a first node. A control unit(230) generates a CTS signal corresponding to the RTS signal. The control unit transmits the CTS signal to the first node through the transceiving unit. A determining unit(220) determines whether a data packet is routed to a destination node of the data packet.
Abstract:
PURPOSE: A communication system using a space division mu-mimo mode is provided to effectively transceive data by using MU-MIMO method. CONSTITUTION: A common control information generator(913) generates common control information about a plurality of terminals. An individual control information generator(930) generates individual control information about each terminals. A precodor(960) precodes data for each terminal and the individual control information.
Abstract:
A stochastical beacon transmission method and an apparatus thereof are provided to remove a lasting beacon collision, generated in a hard time beacon scheme, with a very small overhead. A communication device selects one among W consecutive superframes. In starting each of the W consecutive superframes, the communication device, if a superframe to start is not the selected superframe, starts the superframe without transmitting a beacon at the first time period of the superframe. At the first time period of the selected superframe, the communication device transmits a beacon. In selecting one among the W consecutive superframes, the communication device stochastically selects it.