Performance evaluation of transport layer protocols for transmitting real-time data over DiffServ networks

Yoko Noda; Tatsuhiko Sakai; Hiroshi Shigeno; Yutaka Matsushita

doi:10.1117/12.434363

27 July 2001 Performance evaluation of transport layer protocols for transmitting real-time data over DiffServ networks

Yoko Noda, Tatsuhiko Sakai, Hiroshi Shigeno, Yutaka Matsushita

Proceedings Volume 4524, Quality of Service over Next-Generation Data Networks; (2001) https://doi.org/10.1117/12.434363
Event: ITCom 2001: International Symposium on the Convergence of IT and Communications, 2001, Denver, CO, United States

Abstract

In this paper, we discuss transport layer protocols to support real-time data transmission overnetworks using Differentiated Services (Diffserv) where bandwidth is guaranteed. Assuming that an application transmits streaming video data over a Diffserv network, we have performed simulation experiments to evaluate performance of real-time transmission using standard internet protocols, UDP and TCP as a transport layer protocol. The application is designed to buffer a portion of the data on the receiver before starting the playback and to operate in a streaming mode. Consequently, when packets are lost over Diffserv networks, TCP shows better performance than UDP. Simulation results show that employment of SACK option for TCP can recover lost packets efficiently and improve performance of real-time transmission. Currently, a growing number of real-time media applications over Internet are being implemented using UDP, because reliable delivery mechanism of TCP can obstruct real-time data transmission that is timing critical. However, in our experimental environment, retransmission and congestion control mechanism of TCP make use of bandwidth guaranteed by Diffserv, and help to provide more reliable delivery of real-time data than UDP without serious impacts on time-sensitive delivery. Therefore, despite of the general belief that TCP is not suitable for time-sensitive delivery, in our experiment, we show that TCP is a transport layer protocol suitable for real-time data transmission over Diffserv networks.

Citation Download Citation

Yoko Noda, Tatsuhiko Sakai, Hiroshi Shigeno, and Yutaka Matsushita "Performance evaluation of transport layer protocols for transmitting real-time data over DiffServ networks", Proc. SPIE 4524, Quality of Service over Next-Generation Data Networks, (27 July 2001); https://doi.org/10.1117/12.434363

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Data transmission

Receivers

Internet

Computer simulations

Video

Reliability

Image transmission

Show All Keywords

Keywords/Phrases

Search In:

Publication Years