Efficient expanding ring search for MANETs

Mznah Al-Rodhaan*, Lewis Mackenzie, Mohamed Ould-Khaoua

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Blocking-ERS is an energy efficient route discovery algorithm for MANETs. It uses chase packets to improve the route request process. In Blocking-ERS, most of the time the fulfilled route request manages to escape from the chase packet with the help of mobility. So its success rate in the catching process is low due to the immature discard of chase packets. We are proposing an improved algorithm named Blocking-ERS-Plus to overcome this deficiency in Blocking-ERS by allowing chase packets be broadcasted until the catching is insured to maximise the success rate. We provide detailed performance evaluation using simulation modelling and compare Blocking-ERS-Plus with both Blocking-ERS and AODV. Our findings show that Blocking-ERS-Plus outperforms both Blocking-ERS and AODV by reducing end-to-end delay due to the reduction in network congestion and by improving route request latency, routing overhead, and packet loss due to the higher success rate in the catching process which has positive impact on the network performance.

Original languageEnglish
Pages (from-to)169-177
Number of pages9
JournalInternational Journal of Communication Networks and Information Security
Issue number3
Publication statusPublished - Sept 2010


  • Blocking-ERS
  • Chase packets
  • ERS
  • MANETs
  • On-demand routing protocols
  • Performance analysis
  • Route discovery

ASJC Scopus subject areas

  • Computer Networks and Communications


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