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Author (up) Thomas Plagemann; Katrine S. Skjelsvik; Matija Puzar; Aslak Johannessen; Ovidiu Drugan; Vera Goebel; Ellen Munthe-Kaas pdf  isbn
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  Title Cross-layer overlay synchronization in sparse MANETs Type Conference Article
  Year 2008 Publication Proceedings of ISCRAM 2008 – 5th International Conference on Information Systems for Crisis Response and Management Abbreviated Journal ISCRAM 2008  
  Volume Issue Pages 546-555  
  Keywords Information systems; Routers; Synchronization; Telecommunication networks; Cross layer optimization; Distributed events; Network partitions; Publish-subscribe; Rescue operations; Routing table; Sparse MANETs; Stable routing; Mobile ad hoc networks  
  Abstract Mobile Ad-Hoc Networks maintain information in the routing table about reachable nodes. In emergency and rescue operations, human groups play an important role. This is visible at the network level as independent network partitions which are for some time stable before their members change through merging or partitioning. We use the information from stable routing tables to optimize the synchronization of Mediators in a Distributed Event Notification System. In a stable partition each node has the same information, thus a single Mediator can efficiently coordinate the synchronization, while all other Mediators just receive updates. We show in our experiments that just a few seconds are needed until routing tables stabilize and all nodes have a common view of the partition. We present a heuristic to determine the proper time to synchronize. Furthermore, we show how exceptions, like disappearing coordinating Mediators and unexpected messages, can be efficiently handled.  
  Address Department of Informatics, University of Oslo, Norway  
  Corporate Author Thesis  
  Publisher Information Systems for Crisis Response and Management, ISCRAM Place of Publication Washington, DC Editor F. Fiedrich, B. Van de Walle  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2411-3387 ISBN 9780615206974 Medium  
  Track Adaptive Information Architectures for Interagency Crisis Management Expedition Conference 5th International ISCRAM Conference on Information Systems for Crisis Response and Management  
  Notes Approved no  
  Call Number Serial 844  
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