Carrier sense multiple access (CSMA) protocols for power line communications (PLC)
US9094234B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2014 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Apr 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0096
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for carrier sense multiple access (CSMA) protocols for power line communications (PLC) are described. In some embodiments, a method may include performing a virtual carrier sensing operation and, in response to the virtual carrier sensing operation indicating that a communication channel is idle, calculating a contention window. The method may also include performing a physical carrier sensing operation subsequent to the virtual carrier sensing operation, the physical carrier sensing operation based, at least in part, upon the contention window. In response to the physical carrier sensing operation indicating that the communication channel is idle, the method may then include transmitting data over the channel. In other embodiments, another method may include determining that a data transmission is a unicast transmission and that an acknowledgement message has not been received. The method may further include incrementing a backoff parameter and repeating one or more carrier sense operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.