Multi-hop wireless transmission in multi-band WLAN systems: Proposal and future perspective

Zubair Md Fadlullah, Yuichi Kawamoto, Hiroki Nishiyama, Nei Kato, Naoto Egashira, Kazuto Yano, Tomoaki Kumagai

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Recently, WLANs using multiple frequency bands (e.g., 5 GHz, 2.4 GHz, and 920 MHz) have become popular as a means to increase spectral efficiency. However, during multi-hop transmissions in such multi-band WLANs, the relay node experiences a significant increase in delay and loss of data frames. This happens because of the difference of link rates between the receiving and sending sides of the relay node. In order to address this problem, we consider the channel conditions of each band on either side of the relay. Accordingly, the receiving and sending rates at the relay node are measured and calculated, respectively. Based on the measured receiving rate and calculated sending rate, we propose an algorithm for the relay node to determine the optimal coding rate and modulation method so as to dynamically control the best band and channel selection for the sending side. Simulation results demonstrate the effectiveness of our proposed algorithm in terms of improvement of delay and transmission failure probability.

Original languageEnglish
Article number8057299
Pages (from-to)108-113
Number of pages6
JournalIEEE Wireless Communications
Volume26
Issue number1
DOIs
Publication statusPublished - 2019 Feb

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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