DocumentCode :
1307520
Title :
IPTV Multicast With Peer-Assisted Lossy Error Control
Author :
Li, Zhi ; Zhu, Xiaoqing ; Begen, Ali C. ; Girod, Bernd
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., Stanford, CA, USA
Volume :
22
Issue :
3
fYear :
2012
fDate :
3/1/2012 12:00:00 AM
Firstpage :
434
Lastpage :
449
Abstract :
Internet protocol television (IPTV) systems employ IP multicast to deliver television programs to end-users. To provide reliable IPTV services over the error-prone digital subscriber line (DSL) access networks, a combination of multicast forward error correction and unicast retransmissions is employed to mitigate the impulse noise in DSL links. In current systems, the error control function is provided by special retransmission servers. In this paper, we propose an alternative distributed solution where the burden of packet loss repair is partially shifted to end-user set-top boxes. Using a peer-assisted repair (PAR) protocol, we demonstrate how packet repairs can be delivered in a timely, reliable, and decentralized manner using the combination of server-peer coordination and redundant repairs. We also show that this distributed protocol can be seamlessly integrated with an application-layer source-aware error protection mechanism called forward and retransmitted systematic lossy error protection (SLEP/SLEPr). Analysis and simulations show that this joint PAR-SLEP/SLEPr framework not only efficiently improves the resistance to the impulse noise but also effectively mitigates the bottleneck experienced by the retransmission servers, thus greatly enhancing system scalability.
Keywords :
IP networks; IPTV; digital subscriber lines; forward error correction; impulse noise; multicast protocols; network servers; set-top boxes; telecommunication network reliability; IPTV multicast service; Internet protocol television; PAR protocol; SLEP; SLEPr; application-layer source-aware error protection mechanism; distributed protocol; end-user set-top box; error-prone DSL access network; error-prone digital subscriber line access network; forward systematic lossy error protection; impulse noise mitigation; multicast forward error correction; packet loss repair; peer-assisted lossy error control function; peer-assisted repair protocol; redundant repair; retransmission server; retransmitted systematic lossy error protection; server-peer coordination; system scalability enhancement; unicast retransmission; DSL; Encoding; Forward error correction; Maintenance engineering; Noise; Protocols; Servers; Error-resilient video; impulse noise; internet protocol television (IPTV); peer-to-peer; reliable multicast; scalability;
fLanguage :
English
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8215
Type :
jour
DOI :
10.1109/TCSVT.2011.2164835
Filename :
5999712
Link To Document :
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