Sensor nodes with multicast transmissions in lighting sensory network
US9456293B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2014 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Jun 20, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An embodiment method for communicating data within a lighting sensory network may include configuring a first plurality of lighting nodes to operate as sensor nodes, configuring a second plurality of lighting nodes to operate as listening nodes, generating, by a sensor node using an encryption key, a sensor message associated with sensor data and including at least a timestamp, calculating an interval for transmitting the sensor message, wherein the interval is randomized and exponentially increasing, determining whether to transmit the sensor message based on the calculated interval, transmitting the sensor message in response to determining to transmit the sensor message based on the calculated interval, receiving, by a listening node, the sensor message at a listening node, determining whether the received sensor message is useful based on the timestamp and a predefined age threshold, and performing a lighting action in response to determining the received sensor message is useful.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.