Maximizing lifetime of event-unobservable wireless sensor networks

Kemal Bicakci*, Hakan Gultekin, Bulent Tavli, Ibrahim Ethem Bagci

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


In wireless sensor networks (WSNs) contextual information such as the information regarding whether, when, and where the data is collected cannot be protected using only traditional measures (e.g., encryption). Contextual information can be protected against global eavesdroppers by periodic packet transmission combined with dummy traffic filtering at proxy nodes. In this paper, through a Linear Programming (LP) framework, we analyze lifetime limits of WSNs preserving event-unobservability with different proxy assignment methodologies. We show that to maximize the network lifetime data flow should pass through multiple proxies that are organized as a general directed graph rather than as a tree.

Original languageEnglish
Pages (from-to)401-410
Number of pages10
JournalComputer Standards and Interfaces
Issue number4
Publication statusPublished - Jun 2011


  • Contextual privacy
  • Event-unobservability
  • Linear Programming
  • Location privacy
  • Privacy
  • Transactional confidentiality
  • Wireless sensor networks

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Law


Dive into the research topics of 'Maximizing lifetime of event-unobservable wireless sensor networks'. Together they form a unique fingerprint.

Cite this