Analysis and Evaluation of Packet Delay Variance in the Internet
Kaori Kobayashi, Tsuyoshi Katayama · 2002
This paper isor#RMfl[flL as follows; In Sect. 2, we descr#M e a model of a packet switching (r#gL y) nodefor analyzing the packet delay time, and show the pr# cess to obtain anappr# ximatepr#teL:]flx ydistr#LF[:22 function (PDF) of system delay time by the two moments matching method with initial value.Consider#[L a system delay time of a packet bytr#22jLF[[Rz pr# cess thr#Lxx N nodes links, it isclar#R:: that a constant component of system delay time d has been appear#x] We obtain the second moment of system delay time ) in addition to the mean value E(#)for evaluation of a packet delayjitter as a packet delay var#][2]L In Sect. 3, we intr# duce an easy method ofmeasur#LF ther#LRR[[]LF time and one-way system delay times in the Inter#xx by sending ICMP messages packets betweencer #R:] two hosts without clock synchr#LxjxM2LF pr# cess, and explain a method of datacor#:2[jRL which eliminates asynchr#cLRMjjflL to obtain a PDF of system delay time. Some numer#:RL r#er#:R for mor# detail 36 VO430: NO JANUARY 2002 analysis in Sect. 4ar# indicated. In Sect. 4, we evaluate the fluctuation of packet delay time and make compensations to obtain apr#:j:[ PDF of system delay time shown in Sect. 3,wher# weconsider the Inter#:fl as a 1-node queueing system. We have newly indicated a delay jiay themetr#R of the fluctuation of packet delay time, mor# visual and intuitive thanother wellused statistical var#RR]RLF And we estimatewhether themeasur#] networ# is suitablefor the media of VoIP. Also we show how to establish N-ser#flj queueing networ # based on the measur#jLF ts of end-to-end system delay timefor testingr#st onses of the networ# model by theor#F:2zM computations toimpr# ve thepr#L]: t networ #: In Sect. 5, we concludeour pap 2...