Performance of Group Communication Over Ad-Hoc Networks

Abstract

We study the performance of reliable and unreliable all node broadcast over ad-hoc networks that use contention-based channel access. To obtain analytical results while preserving hidden-terminal and node clustering characteristics of ah-hoc networks, we introduce a novel differential-equation fluid model for information flow through a network of cluster trees, where a spanning tree joins groups of fully connected nodes. Through numerical analysis and simulations in GloMoSim, we show throughput, goodput, and loss rates for reliable and unreliable networks. For reliable broadcast, we also find NAK rates, NAK loss rates, and retransmission rates. We show that using end-to-end sequence numbers, which are common in reliable multicast, for NAK generation in ad-hoc networks creates substantial unnecessary traffic.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2002
Accession Number
ADA461912

Entities

People

  • J.J. Garcia-Luna-Aceves
  • Marc Mosko

Organizations

  • University of California, Santa Cruz

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Ad Hoc Networks
  • Channel Capacity
  • Collisions
  • Data Rate
  • Difference Equations
  • Differential Equations
  • Equations
  • Flow Rate
  • Mesh Networks
  • Network Topology
  • Networks
  • Numerical Analysis
  • Sensor Networks
  • Simulations
  • Steady State
  • Wireless Communications
  • Wireless Networks

Fields of Study

  • Computer science

Readers

  • Computer Networking