Performance of TCP over ABR with Long - Range Dependent
نویسندگان
چکیده
Compressed video is well known to be self-similar in nature 1, 2]. We model VBR carrying Long-Range Dependent (LRD), multiplexed MPEG-2 video sources. The actual traac for the model is generated using fast-fourier transform of generate the fractional gaussian noise (FGN) sequence 14]. Our model of compressed video sources bears similarity to an MPEG-2 Transport Stream carrying video, i.e., it is long-range dependent 2] and generates traac in a piecewise-CBR fashion 3]. We study the eeect of such VBR traac on ABR carrying TCP traac. The eeect of such VBR traac is that the ABR capacity is highly variant. We nd that a switch algorithm like ERICA+ 4] can tolerate this variance in ABR capacity while maintaining high throughput and low delay. We present simulation results for terrestrial and satellite conngurations.
منابع مشابه
Title : Performance of TCP over ABR with Long - Range Dependent VBR
We model VBR carrying Long-Range Dependent (LRD), multiplexed video sources. We study the effect of such VBR traffic on ABR carrying TCP traffic. Our model of compressed video sources bears some similarity to an MPEG-2 Transport Stream carrying video, i.e., it is long-range dependent [1] and generates traffic in a piecewise-CBR fashion [2]. The effect of such VBR traffic is that the ABR capacit...
متن کاملPerformance of TCP over ABR with Long-Range Dependent VBR Background Traffic over Terrestrial and Satellite ATM networks
Compressed video is well known to be self-similar in nature. We model VBR carrying long-range dependent, multiplexed MPEG-2 video sources traffic. The actual traffic for the model is generated using fast-fourier transform of the fractional gaussian noise sequence. Our model of compressed video sources bears similarity to an MPEG-2 transport stream carrying video, i.e., it is long-range dependen...
متن کاملTCP Performance in ATM Networks: ABR Parameter Tuning and ABR/UBR Comparisons
This paper explores two issues on TCP performance over ATM networks: ABR parameter tuning and performance comparison of binary mode ABR with enhanced UBR services. Of the fifteen parameters defined for ABR, two parameters dominate binary mode ABR performance: Rate Increase Factor (RIF) and Rate Decrease Factor (RDF). Using simulations, we study the effects of these two parameters on TCP over AB...
متن کاملTRANSIENT BEHAVIOR OF REAL - TIME SELF - SIMILARSOURCES AND ITS IMPACT ON BEST - EFFORT TRAFFICy
In this paper, we study the impact of multiplexing real-time and best-eeort sources (ATM-ABR, or TCP sources on the Internet) when the real-time sources are long-range dependent. We consider M=G=1 and ON-OFF models for the long-range dependent real-time sources and show that, once the long-range dependent sources reach a heavily-congested state, it takes a long time for the low-priority best-ee...
متن کاملThe Performance of TCP Over ATM ABR and UBR Services
Xiangrong CAI {[email protected]} This is a survey paper on the performance of TCP over ATM ABR and UBR services. Using throughput and fairness as our performance metrics, the effect of the following factors to the performance of TCP over ATM ABR and UBR is discussed here: (1)the switch dropping policies when overflow happens(simple discard, Tail Drop, Drop From Front, Early Packet Drop, P...
متن کامل