Patent ID: 7460038
Filing Date: 2008-12-02
Classification: H04L

Abstract:
1. A method for sharing compression histories among a plurality of devices to improve compression of data transmitted via a plurality of connections, the method comprising: (a) receiving, by a first device from a second device, an index of entries for a compression history shared between the second device and a third device, each index entry comprising a location identifier of data stored in the second device; (b) receiving, by the first device, a data stream intended for a fourth device; (c) identifying, by the first device, that a portion of the data stream matches an entry of the received index; (d) transmitting, by the first device to the second device, a location identifier corresponding to the matched entry; (e) receiving, by the first device from the second device, a portion of the compression history corresponding to the location identifier; (f) determining, by the first device, the portion of the compression history matches a portion of the data stream; and (g) transmitting, by the first device to the fourth device, information identifying the portion of the compression history.