Patent ID: 7640362
Filing Date: 2009-12-29
Classification: G11B,H03M,H04L

Abstract:
1. A method for optimizing compression efficiency comprising: receiving at a router-type device a data stream in which multiple streams of associated protocol data units are interposed; filtering protocol-specific header and control information of a protocol data unit (PDU) to determine compressibility of the contents of said protocol data unit including determining if a given protocol data unit from the data stream is associated with a previously filtered protocol data unit by tracking previously filtered protocol data units from the data stream and information regarding the compression applied to previously filtered protocol data units; based on the result of said filtering, selecting the state of data link compression for said protocol data unit to optimize compression efficiency such that if the given protocol data unit is associated with a previously filtered protocol data unit, the data link compression that was applied to the previously filtered protocol data unit is selected; and associating the selected state of data link compression with the given protocol data unit to control a compression process adapted to compress contents of protocol data units.