Performance Improvement of IEEE 802.15.6 MAC for eHealth Applications Using User Priority Switching

Mohammed Abdel-Hafez, Farag Sallabi, Muhammad Adnan, Khaled Shuaib

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

Abstract

Wireless Body Area Network (WBAN) consists of health and environmental sensing devices and a dedicated hub node. The hub node, which has more processing power and capabilities, collects and forwards sensed data from the sensing devices to a backend server for further processing and actions. Sensing devices use the CSMA/CA mechanism to communicate with the hub. This access mechanism may cause frame retransmission of corrupted frames due to collisions resulting in performance degradation. The IEEE 802.15.6 standard specifies seven different user priorities for different traffic types. Nodes with higher user priorities have a small channel contention window to access the channel more frequently, causing nodes with lower user priorities to starve. To mitigate this problem, we propose a mechanism based on priority switching. In the proposed mechanism, the nodes with a higher priority switch their contention window to that of the lowest user priority and then switch back to their original contention window after sending a single successful packet. We conducted intensive simulations to validate the proposed mechanism, which shows significant improvement in the packet delivery rate of lower user priority nodes and all the nodes' overall performance in terms of throughput, energy consumption, and inter-frame delay.

Original languageEnglish
Title of host publicationICC 2021 - IEEE International Conference on Communications, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728171227
DOIs
Publication statusPublished - Jun 2021
Event2021 IEEE International Conference on Communications, ICC 2021 - Virtual, Online, Canada
Duration: Jun 14 2021Jun 23 2021

Publication series

NameIEEE International Conference on Communications
ISSN (Print)1550-3607

Conference

Conference2021 IEEE International Conference on Communications, ICC 2021
Country/TerritoryCanada
CityVirtual, Online
Period6/14/216/23/21

Keywords

  • CSMA/CA
  • IEEE 802.15.6
  • MAC
  • WBAN
  • performance
  • sensor networks
  • smart healthcare

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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