NDLI: Bandwidth Trading in Unstructured P2P Content Distribution Networks

Content Provider	IEEE Xplore Digital Library
Author	Eger, K. Killat, U.
Copyright Year	2006
Description	Author affiliation: Dept. of Commun. Networks, Hamburg Univ. of Technol. (Eger, K.; Killat, U.)
Abstract	Bandwidth trading schemes give peers an incentive to provide upload bandwidth to other peers in a P2P network for fast file distribution. A popular example is the tit-for-tat strategy used in the BitTorrent protocol. Although this game theoretical scheme provides an incentive to peers to contribute resources to the network it does not prevent unfairness and the performances of peers vary considerably. Therefore, we propose two new trading schemes, which are based on pricing. One uses explicit price information whereas the other scheme uses the download rates from other peers as the price. For both distributed algorithms the stable point provides a fair resource allocation as well as a Nash equilibrium, i.e. fairness is preserved although peers behave selfishly and try to maximise their own download rates only. We compare both pricing schemes with BitTorrent in simulations of static and dynamic networks. The pricing algorithms outperform BitTorrent with respect to fairness. With explicit prices the download rates converge faster to the fair equilibrium than with implicit ones
Sponsorship	CPS
Starting Page	39
Ending Page	48
File Size	515417
Page Count	10
File Format	PDF
ISBN	0769526799
DOI	10.1109/P2P.2006.6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-06
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bandwidth Protocols Pricing Game theory Peer to peer computing Communication networks Distributed algorithms Resource management Nash equilibrium Internet
Content Type	Text
Resource Type	Article

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