System and method for multiple access sensor networks
US8885558B2 · kind B2 · utility
1Cited by
39References
8Claims
0Family size
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Key dates
| Filing date | Sep 28, 2011 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Jun 20, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method enables a radio receiver to distinguish sensor probes supplying data to the receiver over a long period of time. The method includes each probe generating a random number sent to the receiver to identify the probe. Each probe and the receiver also uses a pseudo-random process to identify a time of transmission for each probe. The pseudo-random process helps keep the transmission times for the probes separate in the presence of oscillator drift. If a transmission collision occurs, the receiver ignores all probes in the collision and waits until the pseudo-random process separates the probe transmissions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.