Srinivas Shakkottai
Access-Network Association Policies for Media Streaming in Heterogeneous Environments.
Wed, 04/21/2010 - 15:02 — SomNambulAuthors: Srinivas Shakkottai, Muriel Medard, Ali ParandehGheibi, Asuman Ozdaglar
Subjects: Optimization and Control
AbstractWe study the design of media streaming applications in the presence of
multiple heterogeneous wireless access methods with different throughputs and
costs. Our objective is to analytically characterize the trade-off between the
usage cost and the Quality of user Experience (QoE), which is represented by
the probability of interruption in media playback and the initial waiting time.
We model each access network as a server that provides packets to the user
according to a Poisson process with a certain rate and cost.Evolution of the Internet AS-Level Ecosystem.
Tue, 04/13/2010 - 15:03 — SomNambulAuthors: Srinivas Shakkottai, Marina Fomenkov, Ryan Koga, Dmitri Krioukov, kc claffy
Subjects: Networking and Internet Architecture
AbstractWe present an analytically tractable model of Internet evolution at the level
of Autonomous Systems (ASs). We call our model the multiclass preferential
attachment (MPA) model. As its name suggests, it is based on preferential
attachment. All of its parameters are measurable from available Internet
topology data. Given the estimated values of these parameters, our analytic
results predict a definitive set of statistics characterizing the AS topology
structure. These statistics are not part of the model formulation.Avoiding Interruptions - QoE Trade-offs in Block-coded Streaming Media Applications.
Wed, 01/13/2010 - 16:01 — SomNambulAuthors: Srinivas Shakkottai, Muriel Medard, Ali ParandehGheibi, Asu Ozdaglar
Subjects: Multimedia
AbstractWe take an analytical approach to study Quality of user Experience (QoE) for
video streaming applications. First, we show that random linear network coding
applied to blocks of video frames can significantly simplify the packet
requests at the network layer and save resources by avoiding duplicate packet
reception. Network coding allows us to model the receiver's buffer as a queue
with Poisson arrivals and deterministic departures. We consider the probability
of interruption in video playback as well as the number of initially buffered
packets (initial waiting time) as the QoE metrics.Designing ISP-friendly Peer-to-Peer Networks Using Game-based Control.
Tue, 12/22/2009 - 16:01 — SomNambulAuthors: Srinivas Shakkottai, Vinith Reddy, Younghoon Kim, A.L. Narasimha Reddy
Subjects: Networking and Internet Architecture
AbstractThe rapid growth of peer-to-peer (P2P) networks in the past few years has
brought with it increases in transit cost to Internet Service Providers (ISPs),
as peers exchange large amounts of traffic across ISP boundaries. This ISP
oblivious behavior has resulted in misalignment of incentives between P2P
networks--that seek to maximize user quality--and ISPs--that would seek to
minimize costs. Can we design a P2P overlay that accounts for both ISP costs as
well as quality of service, and attains a desired tradeoff between the two?The Asymptotic Behavior of Minimum Buffer Size Requirements in Large P2P Streaming Networks.
Mon, 09/07/2009 - 22:13 — SomNambulAuthors: R. Srikant, Lei Ying, Srinivas Shakkottai
Subjects: Networking and Internet Architecture
AbstractThe growth of real-time content streaming over the Internet has resulted in
the use of peer-to-peer (P2P) approaches for scalable content delivery. In such
P2P streaming systems, each peer maintains a playout buffer of content chunks
which it attempts to fill by contacting other peers in the network. The
objective is to ensure that the chunk to be played out is available with high
probability while keeping the buffer size small. Given that a particular peer
has been selected, a \emph{policy} is a rule that suggests which chunks should
be requested by the peer from other peers..
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