Paper Info
Title
Allocation of layer bandwidths and FECs for video multicast over wired and wireless networks
Abstract
Layered multicast is an efficient technique to deliver video to heterogeneous receivers over wired and wireless networks. We consider such a multicast system in which the server adapts the bandwidth and forward-error correction code (FEC) of each layer so as to maximize the overall video quality, given the heterogeneous client characteristics in terms of their end-to-end bandwidth, packet drop rate over the wired network, and bit-error rate in the wireless hop. In terms of FECs, we also study the value of a gateway which "transcodes" packet-level FECs to byte-level FECs before forwarding packets from the wired network to the wireless clients. We present an analysis of the system, propose an efficient algorithm on FEC allocation for the base layer, and formulate a dynamic program with a fast and accurate approximation for the joint bandwidth and FEC allocation of the enhancement layers. Our results show that a transcoding gateway performs only slightly better than the nontranscoding one in terms of end-to-end loss rate, and our allocation is effective in terms of FEC parity and bandwidth served to each user.
Year
DOI
Venue
2002
10.1109/TCSVT.2002.806816
IEEE Trans. Circuits Syst. Video Techn.
Keywords
Field
DocType
fec parity,packet-level fecs,wireless network,bit-error rate,wireless hop,wireless client,fec allocation,layer bandwidths,end-to-end bandwidth,packet drop rate,video multicast,end-to-end loss rate,joint bandwidth,data compression,internet,feedback,server,algorithm design and analysis,visual communication,ber,web server,approximation algorithms,video quality,bit error rate,error correction code,wireless networks,dynamic programming,bandwidth allocation,channel allocation,forward error correction,indexing terms,bandwidth,transcoding
Forward error correction,Wireless network,Bandwidth allocation,Computer science,Network packet,Computer network,Default gateway,Bandwidth (signal processing),Multicast,Video quality
Journal
Volume
Issue
ISSN
12
12
1051-8215
Citations 
PageRank 
References 
20
1.15
28
Authors
5
Name
Order
Citations
PageRank
T. -W.A. Lee1201.15
S.-H. Gary Chan21462110.98
Qian Zhang35483343.05
Wenwu Zhu44399300.42
Ya-Qin Zhang53684320.41