LIFT: a Local IPSec-aware Freezing Protocol to improve TCP Performance in Satellite Networks

Published online: Apr 4, 2017
Full Text: PDF (547 KiB)
DOI: 10.24138/jcomss.v2i4.280
Authors:
Giovanni Ciccarese, Mario De Blasi, Sebastiano Elia, Cosimo Palazzo, Luigi Patrono

Abstract

In this paper a protocol, local to the satellite link, is defined in order to boost TCP performance in mobile integrated wired-satellite Internet. It has been conceived to help to overcome the well known retransmissions competition problem that arises when a satellite reliable link layer protocol is used to face satellite link errors. This protocol, called Local IPSec-aware Freezing proTocol (LIFT), has been designed to allow the satellite gateway, even in the presence of communications secured by IPSec, to freeze the TCP sender when it perceives a possible delay due to satellite channel conditions. The effectiveness of LIFT has been evaluated, using the ns-2 tool, in terms of Web page download mean time for a satellite mobile host. Simulation results have shown that the adoption of LIFT protocol provides substantial improvements in TCP performance.

Keywords

satellite, Performance, Mobility, TCP Freezing, ARQ, IPSec
Creative Commons License 4.0
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.