Highly reliable multicast protocol using relay retransmission for WLANs

Byungcheol Kang, Jaeseok Kim

Research output: Contribution to journalArticlepeer-review


In this letter, a new multicast medium access control protocol for wireless local area network(WLAN) system is proposed to achieve high reliability. Multicast in conventional WLANs offers highly efficient use of wireless resources, but has disadvantages of low reliability and low data rates due to lack of feedback. Our proposed multicast frame includes a sequence that indicates the stations (STAs) that send the ACK frame first. Using the sequence, the proposed system makes feedback for the multicast frame. If some STAs fail to receive the frame, the other STAs that have successfully received the frame retransmit the frame. The proposed multicast protocol with relay retransmission can achieve a 100% frame delivery ratio in a strong-fading channel while IEEE 802.11aa multicast protocol cannot. The proposed multicast protocol can also conserve 48% throughput to the maximum data rate in a strong-fading channel.

Original languageEnglish
Pages (from-to)636-639
Number of pages4
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Issue number3
Publication statusPublished - 2018 Mar

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. NRF-2015R1A2A2A01004883).

Publisher Copyright:
© 2018 The Institute of Electronics, Information and Communication Engineers.

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics


Dive into the research topics of 'Highly reliable multicast protocol using relay retransmission for WLANs'. Together they form a unique fingerprint.

Cite this