상세정보
등록 단일 트랜시버를 갖는 USN용 센서 노드에서의 거리조절 MAC프로토콜
- 출원번호
- 12548979 (2009.08.27)
- 공개번호
- 20100118737 (2010.05.13)
- 등록번호
- 8254290 (2012.08.28)
- 출원국
- 미국
- 협약과제
- 08MC3300, RFID/USN용 센서 태그 및 센서 노드 기술 개발, 표철식
- 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.