Near-optimal deterministic steiner tree maintenance in sensor networks

Gokarna Sharma, Costas Busch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

We consider the group communication maintenance problem between a set of k mobile agents that are tracked by a static sensor network. We develop a scalable deterministic distributed algorithm for maintaining a Steiner tree of the agents so that group communication between them can be provided in the minimum cost possible. The main idea is that our algorithm maintains a virtual tree of mobile agents which can be immediately converted to an actual Steiner tree at all times. Our algorithm achieves the Steiner tree with total length at most cO (log k) times the length of the minimum Steiner tree in the constant-doubling graph model. The total communication cost (messages) to maintain the Steiner tree is only cO (min log n, log D) times the optimal communication cost, where n and D, respectively, are the number of nodes and the diameter of the network. We also develop improved algorithms for the k-center, sparse aggregation, and distributed matching problems. Experimental evaluation results show the benefits of our algorithms compared to previous algorithms. These four problems are NP-hard and, to the best of our knowledge, our algorithms are the first near-optimal deterministic algorithms for maintaining approximate solutions to these problems with low maintenance costs in a distributed setting.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2014
PublisherIEEE Computer Society
Pages201-208
Number of pages8
ISBN (Print)9781479946198
DOIs
StatePublished - 2014
Externally publishedYes
Event9th IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2014 - Marina Del Rey, CA, United States
Duration: May 26 2014May 28 2014

Publication series

NameProceedings - IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2014

Conference

Conference9th IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2014
CountryUnited States
CityMarina Del Rey, CA
Period5/26/145/28/14

Keywords

  • Aggregation
  • Hierarchical structure
  • k-center
  • Matching
  • Mobile agents
  • Sensor network
  • Steiner tree

ASJC Scopus subject areas

  • Software

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