A new trellis model for MAC layer cooperative retransmission protocols

Wei Ni, Mehran Abolhasan, Brett Hagelstein, Ren Ping Liu, Xin Wang

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Comparison studies on timer-based distributed cooperative retransmission protocols are challenging, given a variety of backoff techniques. We propose a new unified model, which can characterize a wide range of cooperative retransmission protocols. The key idea is a new trellis diagram that extrapolates the retransmission probabilities in each timeslot to the entire cooperative process. Following the trellis, performance metrics, such as success rate and collision intensity, can be derived in a structured manner. The new trellis model, coupled with Markov techniques, can be also extended to analyze the distributed binary exponential backoff processes of cooperative retransmissions. Confirmed by simulations, the proposed trellis model accurately reveals the impact of the relays' relative locations and density on different protocols. Our model also has the potential to be used as a management tool to adaptively configure protocol parameters.

Original languageEnglish
Article number7523407
Pages (from-to)3448-3461
Number of pages14
JournalIEEE Transactions on Vehicular Technology
Issue number4
Publication statusPublished - 1 Apr 2017
Externally publishedYes


  • cooperative retransmission
  • Markov process


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