Ad hoc sensor networks
US8027810B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2004 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | Dec 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A plurality of mobile sensor devices each periodically measure a property of their environment, and determine the rate of change in that property. Neighboring devices also co-operate to determine the values of the property being measured by each other. If the property is invariant both over time and over a number of neighboring devices, their periodicity of measurement-taking is reduced to conserve power for more significant measurement events. The devices may co-operate to relay their measurements to a data collection point. Each device determines the level of data traffic being carried by one or more neighboring devices, identifies the device that is carrying the least traffic, and puts itself under the control of that device. Any device that determines that it is carrying less such traffic than any of its neighbor assumes control of the data sensing rate for itself and those neighbor, and transmits control data to the said other devices to co-ordinate their data collection rates and stagger their data collection times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.