The performance of a watchdog protocol for wireless network security

Jin Wook Lee, Yann-Hang Lee, Violet Syrotiuk

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


In wireless networks, a watchdog mechanism can be a part of the security architecture used to identify nodes that fail to forward the packets they agree to forward. In this paper, we propose two protocols to address the ambiguous collision limitation of watchdogs. The Watchdog Alert (WA) and Watchdog Confirmation (WC) protocols are variants of the Carrier Sense Multiple Access with Collision Avoidance Protocol (CSMA/CA). We analyse the trade-offs between throughput and watchdog success probability of each protocol, comparing it to CSMA/CA.

Original languageEnglish (US)
Pages (from-to)28-36
Number of pages9
JournalInternational Journal of Wireless and Mobile Computing
Issue number1
StatePublished - 2007


  • Intrusion detection
  • Monitoring protocol
  • Watchdog
  • Wireless network security

ASJC Scopus subject areas

  • Computer Science(all)
  • Electrical and Electronic Engineering


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