NDLI: Avoiding useless multimedia packet over DiffServ networks with multiple bottleneck

Content Provider	IEEE Xplore Digital Library
Author	Jim Wu Hassan, M. Sirisena, H.R.
Copyright Year	2004
Description	Author affiliation: Sch. of Comput. & Inf. Technol., Western Sydney Univ., NSW, Australia (Jim Wu)
Abstract	Useless packet transmission (UPT) arises when a multimedia stream becomes unintelligible because too many packets, in aggregate, are dropped by fair queuing algorithms at routers, even with low drop rates at individual routers. We propose two UPT avoidance (UPTA) schemes for networks with multiple congested links: partial UPTA (P-UPTA), which is core-stateless, and centralized UPTA (C-UPTA), which employs a bottleneck fairshare discovery (BFD) protocol to determine a flow's global fairshare. Our simulation study shows that P-UPTA eventually detects UPT, but bandwidth may be wasted on upstream links before UPT is detected, whereas C-UPTA avoids UPT in all situations as it always drops useless packets at the network edge. We quantitatively analyse the performance of C-UPTA in conjunction with WFQ, in terms of TCP throughput, file download time, MPEG-2 video intelligibility, and fairness. The results reveal that, for the scenarios simulated, the TCP throughput is improved by up to 50% without any significant impact on the intelligibility of the MPEG-2 video and the fairness of the scheduling algorithm.
Starting Page	1055
Ending Page	1059
File Size	811371
Page Count	5
File Format	PDF
ISBN	0780385330
DOI	10.1109/ICC.2004.1312662
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-20
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	IP networks Quality of service Multimedia computing Computer networks Australia Streaming media Protocols Bandwidth Throughput Scheduling algorithm
Content Type	Text
Resource Type	Article

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