Abstract
As the Internet evolves toward the global multiservice network of the future, a key consideration is the support for services with guaranteed quality of service (QoS). The current Internet has a number of barriers to QoS support for real-time data delivery. The proposed differentiated services (Diffserv) framework is seen as the key technology to achieve this. This paper examines standard transport layer protocols, i.e. UDP and TCP, suited for real-time data delivery over Diffserv-capable networks where bandwidth guarantees are provided. We designed a streaming video application that buffers a portion of data on the receiver before starting the playback and operates in a streaming mode. Streaming media applications currently used in the Internet adopt UDP because of the general belief that TCP's reliable delivery mechanisms, such as congestion control and retransmission, are unsuitable for time-sensitive delivery. However, TCP shows the better simulation results than UDP when packets are lost over Diffserv networks. In our simulation, TCP can adapt its sending rate to the guaranteed bandwidth and the buffer on the receiver allows TCP to retransmit lost packets before the playback. As for TCP, the employment of SACK option that can recover lost packets efficiently contributes to a better performance.
| Original language | English |
|---|---|
| Title of host publication | Proceedings - 22nd International Conference on Distributed Computing Systems Workshops, ICDCSW 2002 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 305-310 |
| Number of pages | 6 |
| Volume | 2002-January |
| ISBN (Electronic) | 0769515886 |
| DOIs | |
| Publication status | Published - 2002 |
| Event | 22nd International Conference on Distributed Computing Systems Workshops, ICDCSW 2002 - Vienna, Austria Duration: 2002 Jul 2 → 2002 Jul 5 |
Other
| Other | 22nd International Conference on Distributed Computing Systems Workshops, ICDCSW 2002 |
|---|---|
| Country | Austria |
| City | Vienna |
| Period | 02/7/2 → 02/7/5 |
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ASJC Scopus subject areas
- Computer Networks and Communications
- Hardware and Architecture
- Software
Cite this
A survey of transport layer protocols suited for real-time data delivery over Diffserv-capable networks. / Noda, Y.; Sakai, T.; Shigeno, Hiroshi; Okada, K.; Matsushita, Y.
Proceedings - 22nd International Conference on Distributed Computing Systems Workshops, ICDCSW 2002. Vol. 2002-January Institute of Electrical and Electronics Engineers Inc., 2002. p. 305-310 1030786.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - A survey of transport layer protocols suited for real-time data delivery over Diffserv-capable networks
AU - Noda, Y.
AU - Sakai, T.
AU - Shigeno, Hiroshi
AU - Okada, K.
AU - Matsushita, Y.
PY - 2002
Y1 - 2002
N2 - As the Internet evolves toward the global multiservice network of the future, a key consideration is the support for services with guaranteed quality of service (QoS). The current Internet has a number of barriers to QoS support for real-time data delivery. The proposed differentiated services (Diffserv) framework is seen as the key technology to achieve this. This paper examines standard transport layer protocols, i.e. UDP and TCP, suited for real-time data delivery over Diffserv-capable networks where bandwidth guarantees are provided. We designed a streaming video application that buffers a portion of data on the receiver before starting the playback and operates in a streaming mode. Streaming media applications currently used in the Internet adopt UDP because of the general belief that TCP's reliable delivery mechanisms, such as congestion control and retransmission, are unsuitable for time-sensitive delivery. However, TCP shows the better simulation results than UDP when packets are lost over Diffserv networks. In our simulation, TCP can adapt its sending rate to the guaranteed bandwidth and the buffer on the receiver allows TCP to retransmit lost packets before the playback. As for TCP, the employment of SACK option that can recover lost packets efficiently contributes to a better performance.
AB - As the Internet evolves toward the global multiservice network of the future, a key consideration is the support for services with guaranteed quality of service (QoS). The current Internet has a number of barriers to QoS support for real-time data delivery. The proposed differentiated services (Diffserv) framework is seen as the key technology to achieve this. This paper examines standard transport layer protocols, i.e. UDP and TCP, suited for real-time data delivery over Diffserv-capable networks where bandwidth guarantees are provided. We designed a streaming video application that buffers a portion of data on the receiver before starting the playback and operates in a streaming mode. Streaming media applications currently used in the Internet adopt UDP because of the general belief that TCP's reliable delivery mechanisms, such as congestion control and retransmission, are unsuitable for time-sensitive delivery. However, TCP shows the better simulation results than UDP when packets are lost over Diffserv networks. In our simulation, TCP can adapt its sending rate to the guaranteed bandwidth and the buffer on the receiver allows TCP to retransmit lost packets before the playback. As for TCP, the employment of SACK option that can recover lost packets efficiently contributes to a better performance.
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UR - http://www.scopus.com/inward/citedby.url?scp=84994234216&partnerID=8YFLogxK
U2 - 10.1109/ICDCSW.2002.1030786
DO - 10.1109/ICDCSW.2002.1030786
M3 - Conference contribution
AN - SCOPUS:84994234216
VL - 2002-January
SP - 305
EP - 310
BT - Proceedings - 22nd International Conference on Distributed Computing Systems Workshops, ICDCSW 2002
PB - Institute of Electrical and Electronics Engineers Inc.
ER -