发明授权
US07212122B2 Methods and apparatus of meshing and hierarchy establishment for tracking devices
失效
跟踪装置的网格划分和层次建立的方法和装置
- 专利标题: Methods and apparatus of meshing and hierarchy establishment for tracking devices
- 专利标题(中): 跟踪装置的网格划分和层次建立的方法和装置
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申请号: US11026172申请日: 2004-12-29
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公开(公告)号: US07212122B2公开(公告)日: 2007-05-01
- 发明人: John S. Gloekler , John O'Sullivan , Geoffrey J. Smith , Philip Ryan
- 申请人: John S. Gloekler , John O'Sullivan , Geoffrey J. Smith , Philip Ryan
- 申请人地址: AU Haymarket
- 专利权人: G2 Microsystems Pty. Ltd.
- 当前专利权人: G2 Microsystems Pty. Ltd.
- 当前专利权人地址: AU Haymarket
- 代理机构: Blakely Sokoloff Taylor & Zafman LLP
- 主分类号: G08B13/14
- IPC分类号: G08B13/14
摘要:
Devices, such as tracking devices, cooperate with one another to establish the routing necessary for a relay network in which a device having power-efficient and data-reliable communication with an access portal, operates to relay messages from devices which do not have an acceptable communication path to and/or from the access portal. In one aspect of the present invention, a plurality of devices synchronously determine whether an acceptable communication path can be established between themselves and one or more access portals by measuring the signal strength of an access portal beacon. In another aspect of the present invention, one or more devices, which have determined that an acceptable communication path can be established between themselves and an access portal, transmit information regarding their availability to relay messages on behalf of devices which have determined that an acceptable communication path cannot be established between themselves and an access portal.