Patent ID: 8995437
Filing Date: 2015-03-31
Classification: H04B,H04L

Abstract:
1. A method for transferring frames of data using carrier sense multiple access with collision avoidance (CSMA/CA) on a noisy media, the method comprising: receiving a frame of data via the noisy media from a transmitting device, wherein the data is represented by a first plurality of tones; receiving a tone map request with the frame of data; preparing a first tone map response command that specifies a set of optimized tone map parameters by analyzing the received frame of data; and deleting all previously determined tone map response commands to the transmitting device; transmitting a sequence of segmented data frames via the power line to a receiver using a plurality of conflict free slots in the CSMA/CA protocol, wherein the data is represented by a second plurality of tones; receiving an acknowledgment from the receiver for each correctly received segmented data frame; retransmitting a segmented data frame when an acknowledgement is not received; and including a second tone map request with only a last one of the frame of data if a segmented data frame is retransmitted on an immediately subsequent conflict free slot in a first mode of operation.