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Network intensive video delivery often employs dynamic rate adaptation to trade off video quality for lower bandwidth. In this letter we describe a scheme for providing deterministic rate adaptation (RA) for mobile devices with limited native media player capabilities. The proposed scheme provides a client-side proxy and stitched media file (SMF) architecture for using native media player seek operations...
The finding by Maier et al that Network News Transport Protocol (NNTP) traffic is responsible for up to 5% of residential network traffic inspires us to revisit today's Usenet usage. For this purpose we have developed an NNTP analyzer for the Bro network intrusion detection system. We find that NNTP is intensively used by a small fraction of the residential broadband lines that we study and that almost...
The web is the most powerful paradigm on the Internet today. The widespread use of web services, almost universally in enterprise and Internet services, makes them very attractive for use in sensor networks as well. With the rapid expansion of IPv6 in sensor networks thanks to the 6LoWPAN standard, it is possible to implement web services suitable for very embedded nodes and networks. The SENSEI project...
A grid environment is a collection of a large number of geographically distributed resources managed by various organizations. And it is considered as a powerful computing infrastructure to solve large and complex problems. To support the software development, until now, many grid programming languages have been investigated. Most of them use proprietary protocols or TCP-based protocols to communicate...
SEACAST is a peer-to-peer live streaming protocol developed at Politecnico di Torino, which aims at improving current systems in two key areas. The first is the use of fullfledged flow control using RTP/UDP and session signaling. The second is the use of multiple description coding to handle error resilience and user heterogeneity. In this paper we overview SEACAST, highlighting its main innovations,...
The use of Forward Error Correction (FEC) codes is a classical solution to improve the reliability of multicast and broadcast transmissions in a packet erasure channel. However, FEC encoding on-the-fly increases the load of the server and it may decrease the overall performance of the file delivery system. This paper presents a reliable, server-friendly and bandwidth-efficient file delivery system...
TLS (Transport Layer Security) is a well-known protocol that provides authentication and private communication for application protocols like HTTP (Hypertext Transfer Protocol). In TLS, data transferred from the upper layer can be compressed before it is encrypted. When an E-mail attached file is transferred over TLS, its compression ratio may be degraded since there are certain restrictions on the...
Network configuration (NETCONF) is a widely used protocol to deploy configuration of network devices. NETCONF uses different transport layer protocols like secure shell (SSH), simple object access protocol (SOAP), or blocks extensible exchange protocol (BEEP) (IETF RFCs 4742 through 4744), and assumes availability of a high bandwidth network for successful configuration deployment. In a dynamic MANET...
Streaming video has become a popular form of transferring video over wireless networks. TCP-friendly rate control (TFRC) is used as a streaming video transport protocol. Since TFRC was designed for applications that would prefer to maintain a slowly-changing sending rate, it is less responsive to changes in handover between heterogeneous wireless networks. This paper shows a new TFRC streaming system...
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