Weighted-fairness in message rate based congestion control for vehicular systems
US8948044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2012 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | May 1, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/263
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for implementing congestion control for vehicles based at least in part on weighted fair message rates is disclosed. The system comprises a measurement module, a calculation module and a determination module. The measurement module measures a channel busy ratio describing a fraction of time during which a channel is busy. The calculation module calculates a ratio error by comparing the measured channel busy ratio with a target channel busy ratio. The determination module determines a first parameter value for a first vehicle based at least in part on a ratio of weights and determines a message rate for the first vehicle based at least in part on the ratio error and the first parameter value. The message rate describes a speed for transmitting messages from the first vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.