Invention Application
US20070133352A1 System and method for position awareness for minimizing power consumption in sensor network environment
失效
用于定位感知的系统和方法,用于最小化传感器网络环境中的功耗
- Patent Title: System and method for position awareness for minimizing power consumption in sensor network environment
- Patent Title (中): 用于定位感知的系统和方法,用于最小化传感器网络环境中的功耗
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Application No.: US11633456Application Date: 2006-12-05
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Publication No.: US20070133352A1Publication Date: 2007-06-14
- Inventor: Jin Kim , Seung Park , II Park , Kwang Lee , Doo Eom , Won Lee , Woo Lee , Tae Kim
- Applicant: Jin Kim , Seung Park , II Park , Kwang Lee , Doo Eom , Won Lee , Woo Lee , Tae Kim
- Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Current Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Priority: KR2005-119466 20051208; KR2006-46987 20060525
- Main IPC: G01S3/80
- IPC: G01S3/80

Abstract:
Provided are a system and method for position awareness that can be used indoors in a large-scale environment and can minimize generation of radio frequency (RF) and ultrasonic waves in a wireless sensor network including low-priced sensor nodes capable of precise position measurement, thus improving energy efficiency by reducing unnecessary power consumption. The method includes the steps of: (a) calculating initial position coordinates using beacon information received from adjacent beacons through a broadcast beacon solicitation signal, sending a synchronization signal to the beacons, and synchronizing the beacons; (b) receiving ultrasonic waves generated from the adjacent beacons activated by a broadcast start message, and calculating position coordinates; and (c) when the calculated position coordinates correspond to a predetermined hand-off threshold position, transmitting a hand-off process message to a newly activated beacon, and executing a hand-off process routine.
Public/Granted literature
- US07499376B2 System and method for position awareness for minimizing power consumption in sensor network environment Public/Granted day:2009-03-03
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