A Dynamic Backoff Window Scheme for Machine-Type Communications in Cyber-Physical Systems
A cyber-physical system (CPS) requires a time-bounded communication process for real-time interaction between the digital world and the physical world so that they can form a tight loop. Using the machine-type communication (MTC) protocol for a large-scale CPS is a good solution. However, the MTC pr...
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doaj-c76fceb4f95f4fc2a9f1f9de9ea5a0952021-03-30T01:26:00ZengIEEEIEEE Access2169-35362020-01-018310453105610.1109/ACCESS.2020.29732398993786A Dynamic Backoff Window Scheme for Machine-Type Communications in Cyber-Physical SystemsJenhui Chen0https://orcid.org/0000-0002-8372-9221Ray-Guang Cheng1https://orcid.org/0000-0002-6511-3546Obinna Agbodike2https://orcid.org/0000-0003-1297-952XYu-Syuan Lyu3https://orcid.org/0000-0002-9463-6522Department of Computer Science and Information Engineering, College of Engineering, Chang Gung University, Taoyuan, TaiwanDepartment of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei, TaiwanDepartment of Electrical Engineering, Division of Computer Science and Information Engineering, College of Engineering, Chang Gung University, Taoyuan, TaiwanDepartment of Computer Science and Information Engineering, College of Engineering, Chang Gung University, Taoyuan, TaiwanA cyber-physical system (CPS) requires a time-bounded communication process for real-time interaction between the digital world and the physical world so that they can form a tight loop. Using the machine-type communication (MTC) protocol for a large-scale CPS is a good solution. However, the MTC protocol uses a random access (RA) mechanism to solve the radio resource contention problem, but that inevitably causes access delays especially in scenarios when there is a large number of MTC devices. To meet CPS requirement and address this problem, we propose a dynamic backoff window adjustment (DBA) algorithm for a pull-based RA process that can appropriately distribute the failed MTC devices engaged in the backoff window, so as to expedite their contention retrial time interval and achieve increased success probability. Simulation results showed that the DBA algorithm significantly increases the success probability of MTC devices contending for RA, and as well, shortens the mean access delay of the MTC devices. In comparison to the standard RA backoff scheme and a novel dynamic backoff (DB) scheme, the DBA algorithm proved to be more effective and suitable for the CPS to the best of our knowledge.https://ieeexplore.ieee.org/document/8993786/Cyber-physical systemdynamicmachine-type communicationrandom accessspeed-up |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jenhui Chen Ray-Guang Cheng Obinna Agbodike Yu-Syuan Lyu |
spellingShingle |
Jenhui Chen Ray-Guang Cheng Obinna Agbodike Yu-Syuan Lyu A Dynamic Backoff Window Scheme for Machine-Type Communications in Cyber-Physical Systems IEEE Access Cyber-physical system dynamic machine-type communication random access speed-up |
author_facet |
Jenhui Chen Ray-Guang Cheng Obinna Agbodike Yu-Syuan Lyu |
author_sort |
Jenhui Chen |
title |
A Dynamic Backoff Window Scheme for Machine-Type Communications in Cyber-Physical Systems |
title_short |
A Dynamic Backoff Window Scheme for Machine-Type Communications in Cyber-Physical Systems |
title_full |
A Dynamic Backoff Window Scheme for Machine-Type Communications in Cyber-Physical Systems |
title_fullStr |
A Dynamic Backoff Window Scheme for Machine-Type Communications in Cyber-Physical Systems |
title_full_unstemmed |
A Dynamic Backoff Window Scheme for Machine-Type Communications in Cyber-Physical Systems |
title_sort |
dynamic backoff window scheme for machine-type communications in cyber-physical systems |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2020-01-01 |
description |
A cyber-physical system (CPS) requires a time-bounded communication process for real-time interaction between the digital world and the physical world so that they can form a tight loop. Using the machine-type communication (MTC) protocol for a large-scale CPS is a good solution. However, the MTC protocol uses a random access (RA) mechanism to solve the radio resource contention problem, but that inevitably causes access delays especially in scenarios when there is a large number of MTC devices. To meet CPS requirement and address this problem, we propose a dynamic backoff window adjustment (DBA) algorithm for a pull-based RA process that can appropriately distribute the failed MTC devices engaged in the backoff window, so as to expedite their contention retrial time interval and achieve increased success probability. Simulation results showed that the DBA algorithm significantly increases the success probability of MTC devices contending for RA, and as well, shortens the mean access delay of the MTC devices. In comparison to the standard RA backoff scheme and a novel dynamic backoff (DB) scheme, the DBA algorithm proved to be more effective and suitable for the CPS to the best of our knowledge. |
topic |
Cyber-physical system dynamic machine-type communication random access speed-up |
url |
https://ieeexplore.ieee.org/document/8993786/ |
work_keys_str_mv |
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