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구분 출원국
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등록 단일 트랜시버를 갖는 USN용 센서 노드에서의 거리조절 MAC프로토콜

단일 트랜시버를 갖는 USN용 센서 노드에서의 거리조절 MAC프로토콜
이미지 확대
발명자
김세한, 김내수, 채종석, 표철식
출원번호
12548979 (2009.08.27)
공개번호
20100118737 (2010.05.13)
등록번호
8254290 (2012.08.28)
출원국
미국
협약과제
초록
A method and apparatus using a synchronous sensor network medium access control (MAC) protocol, such as a ZigBee or IEEE 802.15.4 low-rate wireless personal area network (WPAN), is disclosed. A method and apparatus for constructing a ubiquitous sensor network (USN) of which a life is increased by using power beacons and reducing the number of unnecessary control packets (beacon packets), thereby reducing an initialization time between nodes and preventing beacon collision, is also disclosed. A beacon packet channel having a large output power and a data channel of which a transmission range is restricted by reducing an output power to be less than that of the beacon packet channel, may be simultaneously used.
KSP 제안 키워드
Beacon collision, Control packets, IEEE 802, IEEE 802.1, IEEE 802.15.4, Low-rate, MAC protocol, Medium Access, Medium Access Control, Medium Access Control (MAC) protocol, Output power, Personal Area Network, Sensor networks, Sensor node, Transmission Range, Wireless personal, Wireless personal area network(WPAN), access control, area network, power beacons, ubiquitous sensor network