Impacts of sub hub on connectivity of IEEE 802.15.4 in healthcare environments

Sungwoo Weon, Seokwon Lee, Sooyong Choi, Jang Won Lee, Daesik Hong

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

Abstract

In this paper, we consider IEEE 802.15.4 based wireless body area sensor networks (WBASN) in the healthcare environment. Connectivity is a critical constraint in the healthcare environment. In particular, disconnection from a sensor hub is a significant problem that leads to sensor node orphaning. To address this, we propose to use a sub hub designed to enhance WBASN connectivity. The sub hub understudies the original (main) sensor hub and acts to resolve the problems associated with disconnection. We also propose two protocols for use in operating the sub hub. Each protocol prevents the sensor nodes from being orphaned, and forwards data from the sensor nodes to the original sensor hub. In addition, we evaluate the connectivity performance of our proposed protocols and analyze the disconnection tolerance and the number of packet drops. To demonstrate the performances of the proposed protocols, we developed an IEEE 802.15.4 compliant system level simulator with an OPNET Modeler. Simulation results show the individual merits and the demerits of each of the protocols in terms of connectivity. In addition, the energy efficiency of our proposed protocol is evaluated.

Original languageEnglish
Title of host publication2015 IEEE Wireless Communications and Networking Conference, WCNC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1042-1047
Number of pages6
ISBN (Electronic)9781479984060
DOIs
Publication statusPublished - 2015 Jun 17
Event2015 IEEE Wireless Communications and Networking Conference, WCNC 2015 - New Orleans, United States
Duration: 2015 Mar 92015 Mar 12

Publication series

Name2015 IEEE Wireless Communications and Networking Conference, WCNC 2015

Other

Other2015 IEEE Wireless Communications and Networking Conference, WCNC 2015
CountryUnited States
CityNew Orleans
Period15/3/915/3/12

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Computer Science Applications
  • Signal Processing

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