Performance evaluation of UDP traffic affected by TCP flows

Yoshiaki Hori, Hidenari Sawashima, Hideki Sunahara, Yuji Oie

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

On wide area networks (WANs), UDP has likely been used for real-time applications, such as video and audio. UDP supplies minimized transmission delay by omitting the connection setup process, flow control, and retransmission. Meanwhile, more than 80 percent of the WAN resources are occupied by Transmission Control Protocol (TCP) traffic. As opposed to UDP's simplicity, TCP adopts a unique flow control mechanism with sliding windows. Hence, the quality of service (QoS) of real-time applications using UDP is affected by TCP traffic and its flow control mechanism whenever TCP and UDP share a bottleneck node. In this paper, the characteristics of UDP packet loss are investigated through simulations of WANs conveying UDP and TCP traffic simultaneously. In particular, the effects of TCP flow control on the packet loss of real-time audio are examined to discover how real-time audio should be transmitted with the minimum packet loss, while it is competing with TCP traffic for the bandwidth. The result obtained was that UDP packet loss occurs more often and successively when the congestion windows of TCP connections are synchronized. Especially in this case, the best performance of real-time audio applications can be obtained when they send-small sized packets without reducing their transmission rates.

Original languageEnglish
Pages (from-to)1616-1622
Number of pages7
JournalIEICE Transactions on Communications
VolumeE81-B
Issue number8
Publication statusPublished - 1998
Externally publishedYes

Fingerprint

Transmission control protocol
Packet loss
Flow control
Wide area networks
Conveying
Telecommunication traffic
Quality of service
Bandwidth

Keywords

  • Packet loss
  • Real-time comnumication
  • TCP
  • UDP
  • WAN

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Performance evaluation of UDP traffic affected by TCP flows. / Hori, Yoshiaki; Sawashima, Hidenari; Sunahara, Hideki; Oie, Yuji.

In: IEICE Transactions on Communications, Vol. E81-B, No. 8, 1998, p. 1616-1622.

Research output: Contribution to journalArticle

Hori, Y, Sawashima, H, Sunahara, H & Oie, Y 1998, 'Performance evaluation of UDP traffic affected by TCP flows', IEICE Transactions on Communications, vol. E81-B, no. 8, pp. 1616-1622.
Hori, Yoshiaki ; Sawashima, Hidenari ; Sunahara, Hideki ; Oie, Yuji. / Performance evaluation of UDP traffic affected by TCP flows. In: IEICE Transactions on Communications. 1998 ; Vol. E81-B, No. 8. pp. 1616-1622.
@article{494effbf5a52405482d0d5869fd9cd8d,
title = "Performance evaluation of UDP traffic affected by TCP flows",
abstract = "On wide area networks (WANs), UDP has likely been used for real-time applications, such as video and audio. UDP supplies minimized transmission delay by omitting the connection setup process, flow control, and retransmission. Meanwhile, more than 80 percent of the WAN resources are occupied by Transmission Control Protocol (TCP) traffic. As opposed to UDP's simplicity, TCP adopts a unique flow control mechanism with sliding windows. Hence, the quality of service (QoS) of real-time applications using UDP is affected by TCP traffic and its flow control mechanism whenever TCP and UDP share a bottleneck node. In this paper, the characteristics of UDP packet loss are investigated through simulations of WANs conveying UDP and TCP traffic simultaneously. In particular, the effects of TCP flow control on the packet loss of real-time audio are examined to discover how real-time audio should be transmitted with the minimum packet loss, while it is competing with TCP traffic for the bandwidth. The result obtained was that UDP packet loss occurs more often and successively when the congestion windows of TCP connections are synchronized. Especially in this case, the best performance of real-time audio applications can be obtained when they send-small sized packets without reducing their transmission rates.",
keywords = "Packet loss, Real-time comnumication, TCP, UDP, WAN",
author = "Yoshiaki Hori and Hidenari Sawashima and Hideki Sunahara and Yuji Oie",
year = "1998",
language = "English",
volume = "E81-B",
pages = "1616--1622",
journal = "IEICE Transactions on Communications",
issn = "0916-8516",
publisher = "Maruzen Co., Ltd/Maruzen Kabushikikaisha",
number = "8",

}

TY - JOUR

T1 - Performance evaluation of UDP traffic affected by TCP flows

AU - Hori, Yoshiaki

AU - Sawashima, Hidenari

AU - Sunahara, Hideki

AU - Oie, Yuji

PY - 1998

Y1 - 1998

N2 - On wide area networks (WANs), UDP has likely been used for real-time applications, such as video and audio. UDP supplies minimized transmission delay by omitting the connection setup process, flow control, and retransmission. Meanwhile, more than 80 percent of the WAN resources are occupied by Transmission Control Protocol (TCP) traffic. As opposed to UDP's simplicity, TCP adopts a unique flow control mechanism with sliding windows. Hence, the quality of service (QoS) of real-time applications using UDP is affected by TCP traffic and its flow control mechanism whenever TCP and UDP share a bottleneck node. In this paper, the characteristics of UDP packet loss are investigated through simulations of WANs conveying UDP and TCP traffic simultaneously. In particular, the effects of TCP flow control on the packet loss of real-time audio are examined to discover how real-time audio should be transmitted with the minimum packet loss, while it is competing with TCP traffic for the bandwidth. The result obtained was that UDP packet loss occurs more often and successively when the congestion windows of TCP connections are synchronized. Especially in this case, the best performance of real-time audio applications can be obtained when they send-small sized packets without reducing their transmission rates.

AB - On wide area networks (WANs), UDP has likely been used for real-time applications, such as video and audio. UDP supplies minimized transmission delay by omitting the connection setup process, flow control, and retransmission. Meanwhile, more than 80 percent of the WAN resources are occupied by Transmission Control Protocol (TCP) traffic. As opposed to UDP's simplicity, TCP adopts a unique flow control mechanism with sliding windows. Hence, the quality of service (QoS) of real-time applications using UDP is affected by TCP traffic and its flow control mechanism whenever TCP and UDP share a bottleneck node. In this paper, the characteristics of UDP packet loss are investigated through simulations of WANs conveying UDP and TCP traffic simultaneously. In particular, the effects of TCP flow control on the packet loss of real-time audio are examined to discover how real-time audio should be transmitted with the minimum packet loss, while it is competing with TCP traffic for the bandwidth. The result obtained was that UDP packet loss occurs more often and successively when the congestion windows of TCP connections are synchronized. Especially in this case, the best performance of real-time audio applications can be obtained when they send-small sized packets without reducing their transmission rates.

KW - Packet loss

KW - Real-time comnumication

KW - TCP

KW - UDP

KW - WAN

UR - http://www.scopus.com/inward/record.url?scp=0032138947&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032138947&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0032138947

VL - E81-B

SP - 1616

EP - 1622

JO - IEICE Transactions on Communications

JF - IEICE Transactions on Communications

SN - 0916-8516

IS - 8

ER -