Method for optimizing of data transmission

Details Method for optimizing of data transmission Method for optimizing of data transmission

2006-04-18

2006-04-18

Smithers, Matthew (Department: 2137)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Packet header designating cryptographically protected data

C713S161000, C713S162000, C713S163000, C380S029000, C380S030000

Reexamination Certificate

active

07032111

ABSTRACT:
The invention is related to optimization of data transmission in TCP/IP networks, particularly to problems created by transmission of encrypted traffic. According to the invention, an indication of a TCP ACK being carried in the encrypted payload of a IP datagram is added in the IP header of the datagram. The indication may simply be a flag indicating the presence of a TCP acknowledgment. The indication may also contain the acknowledgment number, which allows processing of the encrypted traffic based on the acknowledgment number. In IPv4 datagrams, the indication may be inserted as an extra option field. In IPv6 datagrams, the indication may be inserted as an extension header.

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Information Science Institute USC, “RFC 791—Internet Protocol”, Sep. 1981, pp. 1-37.
Network Working Group, “RFC 1883—Internet Protocol, Version 6 (IPv6) Specification”, Dec. 1995, pp. 1-27.
“A Simple Fast Flow Control For TCP/IP Over Satellite ATM Network”, Jian Ma, ATM 98 Conference.
“An Acknowledgement Bucket Scheme For Regulating TCP Flow Over ATM” Narvaez et al., Globecom 97.
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“TCP Flow Control With ACR Information”, ATM Forum Document ATMF97-758rl, 1997.
“ACK Spacing For High Delay-Bandwidth Paths With Insufficient Buffering”, C. Partridge, Internet Draft, 1999.

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