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A diffusion model for packet travel time in a random multihop medium

Published: 01 June 2007 Publication History

Abstract

We consider a wireless network in which packets are forwarded opportunistically from the source towards the destination, without accurate knowledge of the direction that they should take. A Brownian motion model that includes the effect of packet losses, and subsequent retransmission after a time-out, is used to compute the average travel time of the packet. The results indicate that the average travel time is always finite provided that a time-out is used, and that there is an element of randomness in the manner in which successive nodes are being chosen. We show that the average packet travel time can be minimized by a judicious choice of the time-out, and its optimum value in turn depends on other system parameters such as packet-loss probabilities. We present simulations that illustrate the analytical results.

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Published In

cover image ACM Transactions on Sensor Networks
ACM Transactions on Sensor Networks  Volume 3, Issue 2
June 2007
162 pages
ISSN:1550-4859
EISSN:1550-4867
DOI:10.1145/1240226
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Association for Computing Machinery

New York, NY, United States

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Publication History

Published: 01 June 2007
Published in TOSN Volume 3, Issue 2

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Author Tags

  1. Sensor networks
  2. ad hoc networks
  3. autonomic communications
  4. diffusion process
  5. packet travel time
  6. simulation
  7. wireless networks

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