Coloring-based inter-WBAN scheduling for mobile wireless body area networks

Shih Heng Cheng*, Ching-Yao Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

81 Scopus citations

Abstract

In this study, random incomplete coloring (RIC) with low time-complexity and high spatial reuse is proposed to overcome in-between wireless-body-area- networks (WBAN) interference, which can cause serious throughput degradation and energy waste. Interference-avoidance scheduling of wireless networks can be modeled as a problem of graph coloring. For instance, high spatial-reuse scheduling for a dense sensor network is mapped to high spatial-reuse coloring; fast convergence scheduling for a mobile ad hoc network (MANET) is mapped to low time-complexity coloring. However, for a dense and mobile WBAN, inter-WBAN scheduling (IWS) should simultaneously satisfy both of the following requirements: 1) high spatial-reuse and 2) fast convergence, which are tradeoffs in conventional coloring. By relaxing the coloring rule, the proposed distributed coloring algorithm RIC avoids this tradeoff and satisfies both requirements. Simulation results verify that the proposed coloring algorithm effectively overcomes inter-WBAN interference and invariably supports higher system throughput in various mobile WBAN scenarios compared to conventional colorings.

Original languageEnglish
Article number6193096
Pages (from-to)250-259
Number of pages10
JournalIEEE Transactions on Parallel and Distributed Systems
Volume24
Issue number2
DOIs
StatePublished - 7 Jan 2013

Keywords

  • graph coloring
  • inter-WBAN interference
  • scheduling
  • sensors
  • spatial reuse
  • time-complexity
  • Wireless body area network

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