S-ARQ: A new truncated ARQ for IP-based wireless network

Youngkyu Choi, Seong Jun Oh, Sunghyun Choi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Automatic Repeat reQuest (ARQ) is a very effective technique against transmission error at the medium access control (MAC) layer. An erroneous MAC protocol data unit can be typically retransmitted within a given limit. In order to improve the IP-level performance, which directly affects the user-perceived quality-of-service (QoS), we propose a new truncated ARQ strategy, called MAC service data unit-based ARQ (S-ARQ), where the finite number of opportunities for retransmissions are shared by multiple fragments out of an IP datagram. We describe how S-ARQ can be implemented in a practical system, and then propose another variant of S-ARQ employing a functionality called early detection of failure. Basically, we evaluate the performance of S-ARQ in two different manners. First, assuming i.i.d. error process, we analyze both the probability of the delivery failure and the average delay of IP datagram. Then, we assess the performance of S-ARQ via simulation over a 2-state Markov channel.

Original languageEnglish
Pages (from-to)174-180
Number of pages7
JournalJournal of Communications and Networks
Issue number2
Publication statusPublished - 2010 Apr


  • MAC protocol data unit (MPDU)
  • MAC service data unit (MSDU)
  • Truncated automatic repeat request (ARQ)

ASJC Scopus subject areas

  • Information Systems
  • Computer Networks and Communications


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