An analytic model of TCP performance over multi-hop wireless links with correlated channel fading

  • Authors:
  • S. P. Kim;K. Mitchell

  • Affiliations:
  • School of Computing and Engineering, University of Missouri-Kansas City, 5100 Rockhill Road, Kansas City, MO 64110, USA;School of Computing and Engineering, University of Missouri-Kansas City, 5100 Rockhill Road, Kansas City, MO 64110, USA

  • Venue:
  • Performance Evaluation
  • Year:
  • 2007

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Abstract

In this paper, we present an analytic model for TCP performance over wireless channels with highly correlated fading characteristics. The wireless channel TCP segment loss process is modeled using a Linear Algebraic Queueing Theory representation of a hidden Markov chain that can incorporate autocorrelations in successive segment losses. The segment loss model is then used in the development of a discrete time Markov chain representation of the evolution of the TCP congestion window. Variability in the round-trip time (RTT) distribution and sublinear congestion window growth is also incorporated into the model. We derive transient and steady-state performance measures such as the mean and variance of the congestion window size and throughput for various error autocorrelation and RTTs.