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Distributed Algorithms for Coloring and Domination in Wireless Ad Hoc Networks

  • Srinivasan Parthasarathy
  • Rajiv Gandhi
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3328)

Abstract

We present fast distributed algorithms for coloring and (connected) dominating set construction in wireless ad hoc networks. We present our algorithms in the context of Unit Disk Graphs which are known to realistically model wireless networks. Our distributed algorithms take into account the loss of messages due to contention from simultaneous interfering transmissions in the wireless medium.

We present randomized distributed algorithms for (conflict-free) Distance-2 coloring, dominating set construction, and connected dominating set construction in Unit Disk Graphs. The coloring algorithm has a time complexity of O(Δ log2 n) and is guaranteed to use at most O(1) times the number of colors required by the optimal algorithm. We present two distributed algorithms for constructing the (connected) dominating set; the former runs in time O(Δ log 2 n) and the latter runs in time O(log 2 n). The two algorithms differ in the amount of local topology information available to the network nodes.

Our algorithms are geared at constructing Well Connected Dominating Sets (WCDS) which have certain powerful and useful structural properties such as low size, low stretch and low degree. In this work, we also explore the rich connections between WCDS and routing in ad hoc networks. Specifically, we combine the properties of WCDS with other ideas to obtain the following interesting applications:

  • An online distributed algorithm for collision-free, low latency, low redundancy and high throughput broadcasting.

  • Distributed capacity preserving backbones for unicast routing and scheduling.

Keywords

Time Slot Channel Assignment Unit Disk Graph Broadcast Algorithm Virtual Backbone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Srinivasan Parthasarathy
    • 1
  • Rajiv Gandhi
    • 2
  1. 1.Department of Computer ScienceUniversity of MarylandCollege Park
  2. 2.Department of Computer ScienceRutgers UniversityCamden

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