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

2017 ◽  
Vol 2 (4) ◽  
pp. 347 ◽  
Author(s):  
Giovanni Ciccarese ◽  
Mario De Blasi ◽  
Sebastiano Elia ◽  
Cosimo Palazzo ◽  
Luigi Patrono
Keyword(s):  
Mobile Host ◽  
Satellite Networks ◽  
Web Page ◽  
Tcp Performance ◽  
Link Layer ◽  
Satellite Link ◽  
Channel Conditions ◽  
Simulation Results ◽  
Link Layer Protocol ◽  
Mean Time

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.

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