Abstract: In a rule based header compression system such as a SCHC compressor/decompressor, a controller is provided which provides “hints” to the header compression processor, so as to direct its behaviour. These hints may define new rules, modify existing rules, set state values against which rules are tested during compression, prioritise rules or exclude rules from consideration to achieve optimum compression. The controller may dynamically generate rules on the basis of learned of detected flow characteristics to achieve optimum compression. The controller may operate as a state machine, which may define states corresponding to different degrees of compression for a given flow or flow type. The system comprises multiple compressors, some or all of which may be remote from the compression processor.

Abstract: Data messages such as data packets in an IPv4 or IPv6 format are processed with a view to compression/decompression, using information obtained from sources other than the data packet itself, or the stream to which it belongs. This may involve additional dynamic processing defined in specifications identified by a shared marker, or obtained from an additional data source such as a static file, database application or the like. Embodiments described herein enhance this approach with a dynamic determination of data components.

Abstract: Data messages such as data packets in an IPv4 or IPv6 format are processed with a view to compression/decompression, using information obtained from sources other than the field data packet itself, or the stream to which it belongs. This may involve additional dynamic processing defined in specifications identified by a shared marker, or obtained from an additional data source such as a static file, database application or the like. Embodiments described herein enhance this approach with a dynamic determination of data components.

Abstract: A source proxy for transmitting one or more TCP packets sent from a source device to a destination device over a wireless link is provided. Each TCP packet comprises a TCP data section and a TCP packet header.

Abstract: The invention relates to a method for learning a compression/decompression context comprising at least one compression/decompression rule intended to be used by a compressor device and a decompressor device to compress and decompress a first data stream transmitted via at least one first communication link, respectively. In such a method at least one device, among the compressor device, the decompressor device and a third device, carries out the following steps: analyzing (E200) at least one second non-compressed data stream transmitted between the compressor device and the decompressor device via at least one second communication link; and learning (E210) the at least one compression/decompression rule depending on said analysis.