Abstract
We consider the aggregation problem in radio networks: find a spanning tree in a given graph and a conflict-free schedule of the edges so as to minimize the latency of the computation. While a large body of literature exists on this and related problems, we give the first approximation results in graphs that are not induced by unit ranges in the plane. We give a polynomial-time (Formula presented.)-approximation algorithm, where d̅ is the average degree and n the number of vertices in the graph, and show that the problem is Ω(n1-ε)-hard (and Ω((dn)1/2-ε)-hard) to approximate even on bipartite graphs, for any ε > 0, rendering our algorithm essentially optimal.
Original language | English |
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Title of host publication | Algorithms for Sensor Systems - 11th International Symposium on Algorithms and Experiments for Wireless Sensor Networks, ALGOSENSORS 2015, Revised Selected Papers |
Editors | Kay Römer, Roger Wattenhofer, Leszek Antoni Gąsieniec, Prosenjit Bose |
Publisher | Springer Verlag |
Pages | 169-182 |
Number of pages | 14 |
ISBN (Print) | 9783319284712 |
DOIs | |
State | Published - 2015 |
Externally published | Yes |
Event | 11th International Symposium on Algorithms and Experiments for Wireless Sensor Networks, ALGOSENSORS 2015 - Patras, Greece Duration: 17 Sep 2015 → 18 Sep 2015 |
Publication series
Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
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Volume | 9536 |
ISSN (Print) | 0302-9743 |
ISSN (Electronic) | 1611-3349 |
Conference
Conference | 11th International Symposium on Algorithms and Experiments for Wireless Sensor Networks, ALGOSENSORS 2015 |
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Country/Territory | Greece |
City | Patras |
Period | 17/09/15 → 18/09/15 |
Bibliographical note
Publisher Copyright:© Springer International Publishing Switzerland 2015.