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Parallel download protocols that establish multiple TCP connections to distributed replica servers have the potential to reduce file download time and to achieve a server-side load balancing. Unfortunately, parallel download protocols are also inherently unfair towards single-flow downloads and may even starve them. This paper presents TCP-ROME, a parallel download protocol that allows a dynamic mitigation...
Motivated by P2P file transfer applications (e.g., BitTorrent) on the Internet, this paper considers the problem of delivering a file from a server to multiple receivers in a P2P network. Each receiver has an associated delay in receiving the file. We aim at understanding the optimal delay region, i.e., the set of all possible delay vectors that can be achieved. Previous work has addressed the problem...
With the popularity of VoIP, Push-To-Talk (PTT) services over the IP networks have gained their momentum. This research aims at essential design issues for the quality of service of PTT services. We explore the relationship between the speech quality and system design issues. MOS (Mean Opinion Score), which is raised by the ITU-T (International Telecommunication Union) as one of the most common benchmarks,...
This paper shows the network-level view of the behaviour of two popular and deployed anonymity systems; Tor and JAP (AN.ON). The analysis uses the fact that both of them depend on TCP (transmission control protocol) and shows cases when network conditions may affect the systemspsila operations. The main topics are: on-off traffic, difference in available bandwidth between peers, and usage of the window...
This paper presents an algorithm for creating and maintaining a dynamic localized peer-to-peer overlay network with its main application to massively multiplayer games. In these games, players reside in a large game world with many thousands of players but each player has typically a limited vision range. In our solution, players join the network as peers and mainly connect to neighbor peers that...
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