Message management protocol persistent geocast routing
US8410956B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2007 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Apr 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/189
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for providing a protocol to maintain a persistent warning message in a region of interest. The protocol begins its operation when a hazardous condition is detected by a vehicle. The detecting vehicle uses a multi-hop geocast broadcasting process to transmit a warning message to other vehicles in the region of interest. When the vehicles in the region of interest receive the warning message, they are prevented from re-broadcasting the message for a first predetermined period of time. After the first predetermined period of time has expired, a contentious timing process is used to determine which of those vehicles will re-broadcast the message to other vehicles entering the region of interest. This process of re-broadcasting continues until a second predetermined period of time expires at which time the message is not re-broadcast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.