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Detail
Registered Distance Controlled MAC Protocol at USN Sensor Node with Single Transceiver
- Inventors
- Se Han Kim, Nae-Soo Kim, Chae Jong- Suk, Cheol Sig Pyo
- Application No.
- 12548979 (2009.08.27)
- Publication No.
- 20100118737 (2010.05.13)
- Registration No.
- 8254290 (2012.08.28)
- Country
- UNITED STATES
- Project Code
- 08MC3300, Development of Sensor Tag and Sensor Node Technologies for RFID/USN, Cheol Sig Pyo
- Abstract
- 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.