Data networks
Endpoint admission control: architectural issues and performance
Proceedings of the conference on Applications, Technologies, Architectures, and Protocols for Computer Communication
Self-Similar Network Traffic and Performance Evaluation
Self-Similar Network Traffic and Performance Evaluation
Passive estimation of TCP round-trip times
ACM SIGCOMM Computer Communication Review
End-to-end available bandwidth: measurement methodology, dynamics, and relation with TCP throughput
Proceedings of the 2002 conference on Applications, technologies, architectures, and protocols for computer communications
IEEE Journal on Selected Areas in Communications
Bandwidth estimation in broadband access networks
Proceedings of the 4th ACM SIGCOMM conference on Internet measurement
Network resource allocation for competing multiple description transmissions
IEEE Transactions on Communications
QoS Stochastic Traffic Engineering for the wireless support of real-time streaming applications
Computer Networks: The International Journal of Computer and Telecommunications Networking
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Round trip delays constitute the basic network measure that can be obtained by end systems without any network support. Our aim is to design measurement-based admission control strategies for streaming applications based on such minimal feedback on network state. To this end we discuss simple statistical models of packet round trip delays accross either local or wide area networks. We observe that the delay component due to queueing scales like the reciprocal of the spare capacity, at least in a 'heavy traffic' regime where spare capacity is scarce. Our models also allow to capture the correlations between consecutive measurements. Based on these results we propose a two-stage strategy for inferring spare capacity along a network path. We show consistency of this estimate, and analyse its asymptotic variance when the number of samples becomes large. We have experimented these strategies in a local network environment. We observe a good match between theory and practice for switched Ethernets. Surprisingly, the match deteriorates only slightly when the network path comprises hubs, although the theoretical models seem to be less applicable to such technology.