DYNAMIC MODULATION SELECTION

摘要

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for transmitting data. In one aspect, a method obtains a baseline data rate for transmissions from a node that are received over a channel of a power line communications system and a set of available modulation techniques for the node. The set of available modulation techniques can include at least two modulation techniques with which the node is configured to encode data that are transmitted over the channel. Using the set of available modulation techniques, a modulation technique that is capable of providing at least the baseline data rate with at least a threshold confidence for the node is selected. In turn, data is provided to the node specifying the selected modulation technique.

主权项

1. A method performed by a data processing apparatus, the method comprising:
obtaining data specifying a baseline data rate for transmissions from a node that are received over a channel of a power line communications system; providing, to the node, data specifying a selected modulation technique; and selecting an available channel for a selected one of a plurality of modulation techniques based on an assessment of data transmission efficiency of the data transmitted from the node, wherefrom the node is reconfigured to transmit over at least one of a different channel and a different modulation technique; determining a noise-tolerance threshold associated with the selected modulation technique, the noise-tolerance threshold for the modulation technique being a measure at which the modulation technique provides the baseline data rate with at least a threshold confidence; and selecting an available channel for the node in response to the step of determining, the selected channel being a channel over which the selected modulation technique can provide the baseline data rate with at least the threshold confidence.