Data transmission utilizing partitioning and dispersed storage error encoding

摘要

A method begins by a first device obtaining data for transmission to a second device and partitioning the data to produce a plurality of data portions. The method continues with the first device dispersed storage error encoding the plurality of data portions using a plurality of sets of error coding dispersal storage function parameters to produce a plurality of sets of encoded data slices and transmitting the plurality of sets of encoded data slices to the second device via a network. The method continues with a second device receiving at least a decode threshold number of encoded data slices and dispersed storage error decoding the at least a decode threshold number of encoded data slices to produce a decoded data portion for each set of the plurality of sets of encoded data slices. The method continues with the second device recapturing the data from a plurality of decoded data portions.

主权项

1. A method comprises:
obtaining, by a first device, data for transmission to a second device; partitioning, by the first device, the data in accordance with a data partitioning scheme to produce a plurality of data portions; dispersed storage error encoding, by the first device, the plurality of data portions using a plurality of sets of error coding dispersal storage function parameters to produce a plurality of sets of encoded data slices, wherein a first set of error coding dispersal storage function parameters includes a first decode threshold number and a first total number and a second set of error coding dispersal storage function parameters includes a second decode threshold number and a second total number; transmitting, by the first device, the plurality of sets of encoded data slices to the second device via a network; for each set of the plurality of sets of encoded data slices:
receiving, by the second device, at least a decode threshold number of encoded data slices of the set of encoded data slices in accordance with a corresponding one of the plurality of sets of error coding dispersal storage function parameters, wherein the decode threshold number is less than a total number of encoded data slices in the set of encoded data slices and is a minimum number of encoded data slices needed to recover the corresponding data portion;determining whether an encoded data slice of the at least a decode threshold number of encoded data slices includes a bit error;when the encoded data slice includes the bit error, discarding the encoded data slice from the at least a decode threshold number of encoded data slices to produce an updated set of encoded data slices;determining whether the updated set of encoded data slices includes at least a decodable number of encoded data slices;when the updated set of encoded data slices includes at least a decodable number of encoded data slices, dispersed storage error decoding the at least a decode threshold number of encoded data slices including dispersed storage error decoding the updated set of encoded data slices; andwhen the updated set of encoded data slices does not includes at least a decodable number of encoded data slices, utilizing data filler for the corresponding data portion; andwhen the encoded data slice does not include the bit error, dispersed storage error decoding, by the second device, the at least a decode threshold number of encoded data slices using the corresponding one of the plurality of sets of error coding dispersal storage function parameters to produce a decoded data portion; and recapturing, by the second device, the data from a plurality of decoded data portions in accordance with the data partitioning scheme.