Queue and Channel-Based Aloha Algorithm in Multichannel Wireless Networks

Dean Malachi, Kobi Cohen

Research output: Contribution to journalArticlepeer-review


Cross-layer Aloha protocols that exploit the channel diversity when accessing the spectrum became popular In recent years, due to their capability to Increase the user rates as compared to classic Aloha-type protocols. Existing algorithms, however, suffer from significant performance degradation In terms of queue load balancing, which makes them Inefficient In practical systems. In this letter, we develop a novel queue and channel based Aloha (QCA) algorithm to solve this Issue. In QCA, each user trades off between the channel state and the queue state to Increase the rate while keeping the queue load small. Strong performance of the algorithm Is demonstrated theoretically and numerically.

Original languageAmerican English
Article number9075202
Pages (from-to)1309-1313
Number of pages5
JournalIEEE Wireless Communications Letters
Issue number8
StatePublished - 1 Aug 2020


  • Multichannel Aloha
  • access protocols
  • communication networks
  • wireless communication

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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