Method and apparatus for reliable communications in underground and hazardous areas
US8885559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2009 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Oct 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for reliable wireless voice, data and location communication for deployment in underground, industrial and other hazardous environments using a wireless mesh network. The network includes protocol for dispatch operation, emergency operation, remote supervision, remote status, asset control, machine state of health and operational management. The architecture is based on localized clusters of autonomous nodes capable of ad hoc interconnection with nearby nodes and connection to gateway nodes. The resulting network is an ad hoc mesh topology comprised of fixed mesh nodes with approximately 50% coverage overlap between nodes. This provides a reliable communication network for mobile nodes carried by personnel and sensor nodes that are fixed or mobile that supports voice, data and tracking/situation awareness. Each cluster of nodes transfers digital voice and data to gateway nodes either directly or through multi-hop transactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.