Fa. Tobagi et I. Dalgic, PERFORMANCE EVALUATION OF 10BASE-T AND 100BASE-T ETHERNETS CARRYING MULTIMEDIA TRAFFIC, IEEE journal on selected areas in communications, 14(7), 1996, pp. 1436-1454
In this paper, the performance of 10Base-T and 100Base-T Ethernet segm
ents carrying audio/video traffic is presented, End-to-end delay requi
rements suitable for a wide range of multimedia applications are consi
dered (ranging from 20-500 ms), Given the specific nature of the netwo
rk considered and the maximum latency requirement, some data is lost,
Data loss at the receiver causes quality degradations in the displayed
video in the form of discontinuities, referred to as glitches, We def
ine various quantities characterizing the glitches, namely, the total
amount of information lost in glitches, their duration, and the rate a
t which glitches occur, We study these quantities for various network
and traffic scenarios, using a computer simulation model driven by rea
l video traffic generated by encoding video sequences, We also determi
ne the maximum number of video streams that can be supported for given
maximum delay requirement and glitch rate, We consider various types
of video contents (video conferencing, motion pictures, commercials),
two encoding schemes (H.261 and MPEG-1), and two encoder control schem
es [constant bit rate (CBR) and constant-quality variable bit rate (CQ
-VBR)] and compare their results, Furthermore, we consider scenarios w
ith mixtures of video and data traffic (with various degrees of bursti
ness), and determine the effect of one traffic type over the other.