Patent 7286536 was granted and assigned to Nokia on October, 2007 by the United States Patent and Trademark Office.
The present invention relates to a method and system for early compression of a header portion of data packet(s) transmitted after establishment of a packet data connection. A compression information is obtained from a signaling used to establish at least a part of said packet data connection, and is used for the early compression of the header portion. Thereby, even the first data packet(s) can header-compressed to thereby enhance compression efficiency and reduce delay in transmission-window based packet connections with a slow start phase.