An Asymptotically Optimal Push-Pull Method for Multicasting Over a Random Network

We consider all-cast and multicast flow problems where either all of the nodes or only a subset of the nodes may be in session. Traffic from each node in the session has to be sent to every other node in the session. If the session does not consist of all the nodes, the remaining nodes act as relays...

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Veröffentlicht in:IEEE transactions on information theory 2013-08, Vol.59 (8), p.5075-5087
Hauptverfasser: Swamy, Vasuki Narasimha, Bhashyam, Srikrishna, Sundaresan, Rajesh, Viswanath, Pramod
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creator Swamy, Vasuki Narasimha
Bhashyam, Srikrishna
Sundaresan, Rajesh
Viswanath, Pramod
description We consider all-cast and multicast flow problems where either all of the nodes or only a subset of the nodes may be in session. Traffic from each node in the session has to be sent to every other node in the session. If the session does not consist of all the nodes, the remaining nodes act as relays. The nodes are connected by undirected links whose capacities are independent and identically distributed random variables. We study the asymptotics of the capacity region (with network coding) in the limit of a large number of nodes, and show that the normalized sum rate converges to a constant almost surely. We then provide a decentralized push-pull algorithm that asymptotically achieves this normalized sum rate without network coding.
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subjects Algorithms
All-cast
Applied sciences
Asymptotic methods
broadcast
Encoding
Erdős-Rényi random graph
Exact sciences and technology
flows
Information theory
Information, signal and communications theory
matching
multicast
Multicast communication
Network coding
Peer-to-peer computing
random graph
Random variables
Relays
Steiner tree
Switching and signalling
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Traffic flow
Transmission and modulation (techniques and equipments)
tree packing
Upper bound
title An Asymptotically Optimal Push-Pull Method for Multicasting Over a Random Network
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