Dynamic delta encoding for cable modem header suppression

Details Dynamic delta encoding for cable modem header suppression Dynamic delta encoding for cable modem header suppression

2001-10-11

2008-11-11

Lin, Kenny S (Department: 2152)

Electrical computers and digital processing systems: multicomput

Computer-to-computer data modifying

C709S236000, C709S247000

Reexamination Certificate

active

07451235

ABSTRACT:
A method and computer program product for recognizing and optimizing the transmission of TCP/IP style traffic across a DOCSIS network. According to the method of the present invention, a full TCP protocol packet is initially transmitted across a DOCSIS network to be learned by the CMTS. Redundant fields in the TCP protocol packet are entirely suppressed when subsequent TCP protocol packets are transmitted across the DOCSIS network. Non-redundant fields in the TCP protocol packet are delta-encoded using a delta-encoded value when subsequent TCP protocol packets are transmitted. The delta-encoded values represent the change in value of the current TCP packet from the previous TCP packet for a non-redundant field. This enables the CMTS to provide an exact reconstruction of all subsequently transmitted compressed TCP protocol packets.

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