Dual-CTS: Novel high-efficiency spatial reuse method in heterogeneous wireless IoT systems

Kento Ono, Kohei Akimoto, Suguru Kameda, Noriharu Suematsu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A heterogeneous wireless IoT system is assumed to be used where several wireless subsystems with different standards using the same frequency coexist in a narrow space such as a factory. In the heterogeneous wireless IoT system, interference from the micro-cell system (μSystem) to the pico-cell system (pSystem) decreases the pSystem throughput. In this paper, we propose a Dual Clear to Send (Dual-CTS) method as a novel access control method for avoiding interference by exploiting spatial resources. In the proposed Dual-CTS method, μSystem gateway (μGW) does not broadcast only conventional CTS but also special CTS for pNode (pCTS) after receiving Require to Send (RTS). The pCTS enables pNode to transmit data using the same time and the same frequency resources as μNode uses. Calculation and simulation results show that the pSystem throughput in the proposed method is higher than one of the conventional methods by 1.3 times or more by exploiting the spatial resource.

Original languageEnglish
Title of host publication2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728144900
DOIs
Publication statusPublished - 2020 Aug
Event31st IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2020 - Virtual, London, United Kingdom
Duration: 2020 Aug 312020 Sep 3

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume2020-August

Conference

Conference31st IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2020
CountryUnited Kingdom
CityVirtual, London
Period20/8/3120/9/3

Keywords

  • CSMA/CA
  • Interference Avoidance
  • RTS/CTS
  • Spectrum Sharing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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