Patent ID: 8422517
Filing Date: 2013-04-16
Classification: H04L

Abstract:
1. A method comprising: determining, at a first network device of a communication network, that a transmission of an original packet to a second network device of the communication network failed, wherein the original packet comprises one or more original symbols; identifying, at the first network device, for each original symbol of the original packet, a subset of a plurality of sub-carriers of the original symbol that are associated with a bit load that is less than a predefined bit load threshold; eliminating, at the first network device, for each original symbol of the original packet, the subset of the plurality of sub-carriers that are associated with the bit load that is less than the predefined bit load threshold; allocating, at the first network device, for each original symbol of the original packet, a bit load of each of a remainder of the plurality of sub-carriers of the original symbol across two or more constituent symbols associated with the original symbol; determining, at the first network device, for each original symbol of the original packet, how to allocate at least a portion of the bit loads associated with the subset of the plurality of sub-carriers of the original symbol that were eliminated across the two or more constituent symbols associated with the original symbol; and allocating at least the portion of the bit loads associated with the subset of the plurality of sub-carriers of the original symbol that were eliminated to the two or more constituent symbols associated with the original symbol.