Data Transfer Time by HTTP 1.0/1.1 on Asymmetric Networks Composed of Satellite and Terrestrial Links

URI http://harp.lib.hiroshima-u.ac.jp/hiroshima-cu/metadata/6495
File
Title
Data Transfer Time by HTTP 1.0/1.1 on Asymmetric Networks Composed of Satellite and Terrestrial Links
Author
氏名 OBATA Hiroyasu
ヨミ オバタ ヒロヤス
別名 小畑 博靖
氏名 ISHIDA Kenji
ヨミ イシダ ケンジ
別名 石田 賢治
氏名 FUNASAKA Junichi
ヨミ フナサカ ジュンイチ
別名 舟阪 淳一
氏名 AMANO Kitsutaro
ヨミ アマノ キツタロウ
別名 天野 橘太郎
Subject
web data transfer time
asymmetric networks
satellite links
terrestrial links
pipeline
Abstract

Asymmetric networks, which provide asymmetric bandwidth or delay for upstream and downstream transfer, have recently gained much attention since they support popular applications such as the World Wide Web (WWW). HTTP (Hypertext Transfer Protocol) is the basis of most WWW services so, evaluating the performance of HTTP on asymmetric networks is increasingly important, particularly real-world networks. However, the performance of HTTP on the asymmetric networks composed of satellite and terrestrial links has not sufficiently evaluated. This paper proposes new formulas to evaluate the performance of both HTTP1.0 and HTTP1.1 on asymmetric networks. Using these formulas, we calculate the time taken to transfer web data by HTTP1.0/1.1. The calculation results are compared to the results of an existing theoretical formula and experimental results gained from a system that combines a VSAT (Very Small Aperture Terminal) satellite communication system for satellite links (downstream) and the Internet for terrestrial links (upstream). The comparison shows that the proposed formulas yield more accurate results (compared to the measured values) than the existing formula. Furthermore, this paper proposes an evaluation formula for pipelined HTTP1.1, and shows that the values output by the proposed formula agree with those obtained by experiments (on the VSAT system) and simulations.

Description Peer Reviewed
Journal Title
IEICE TRANSACTIONS on Communications
Volume
E85-B
Issue
12
Spage
2895
Epage
2903
Published Date
2002-12-01
Publisher
電子情報通信学会(IEICE)
ISSN
0916-8516
Language
eng
NIIType
Journal Article
Text Version
出版社版
Rights
copyright©2002 IEICE
Relation URL
Old URI
Set
hiroshima-cu