IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136
Low latency IR-HARQ for multiband WLAN system
Masanori YofuneSatoshi SonobeAtsuhiko SugitaniYasuharu AmezawaShin-ich Sato
Author information

2018 Volume 7 Issue 6 Pages 189-194


This paper proposes a low latency incremental redundancy hybrid ARQ (IR-HARQ) scheme for a multiband wireless local area network (WLAN) system. The proposed scheme can reduce a retransmission delay and ensure backward compatibility with WLAN devices by using a clear to send (CTS) frame of a current WLAN system and rate compatible low-density parity-check (RC-LDPC) codes. Additionally, it can minimize the retransmission delay by selecting an optimal retransmission data length on the basis of the accumulated mutual information (ACMI) for available frequency bands. The results of computer simulations show that the multiband WLAN system using the proposed scheme has shorter retransmission delay and higher system throughput than the current WLAN system.

Content from these authors
© 2018 The Institute of Electronics, Information and Communication Engineers
Previous article Next article