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The Delay-Friendliness of TCP

Eli Brosh; Salman Abdul Baset; Vishal Misra; Daniel Stuart Rubenstein; Henning G. Schulzrinne

Title:
The Delay-Friendliness of TCP
Author(s):
Brosh , Eli
Baset, Salman Abdul
Misra, Vishal
Rubenstein, Daniel Stuart
Schulzrinne, Henning G.
Date:
Type:
Technical reports
Department:
Computer Science
Permanent URL:
Series:
Columbia University Computer Science Technical Reports
Part Number:
CUCS-023-07
Publisher:
Department of Computer Science, Columbia University
Publisher Location:
New York
Abstract:
Traditionally, TCP has been considered unfriendly for real-time applications. Nonetheless, popular applications such as Skype use TCP due to the deployment of NATs and firewalls that prevent UDP traffic. This observation motivated us to study the delay performance of TCP for real-time media flows using an analytical model and experiments. The results obtained yield the working region for VoIP and live video streaming applications and guidelines for delay-friendly TCP settings. Further, our research indicates that simple application-level schemes, such as packet splitting and parallel connections, can significantly improve the delay performance of real-time TCP flows.
Subject(s):
Computer science
Item views:
158
Metadata:
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