Distributed Scheme for Interference Mitigation of WBANs Using Predictable Channel Hopping

Mohamad Jaafar Ali (1) , Hassine Moungla (1) , Mohamed Younis (2) , Ahmed Mehaoua (1)

1 LIPADE - EA 2517 - Laboratoire d'Informatique Paris Descartes
2 Department of Computer Science [College Park]

When sensors of different coexisting wireless body area networks (WBANs) transmit at the same time using the same channel, a co-channel interference is experienced and hence the performance of the involved WBANs may be degraded. In this paper, we exploit the 16 channels available in the 2.4 GHz international band of ZIGBEE, and propose a distributed scheme that avoids interference through predictable channel hopping based on Latin rectangles, namely, CHIM. In the proposed CHIM scheme, each WBAN's coordinator picks a Latin rectangle whose rows are ZIGBEE channels and columns are sensor IDs. Based on the Latin rectangle of the individual WBAN, each sensor is allocated a backup time-slot and a channel to use if it experiences interference such that collisions among different transmissions of coexisting WBANs are minimized. We further present a mathematical analysis that derives the collision probability of each sensor's transmission in the network. In addition, the efficiency of CHIM in terms of transmission delay and energy consumption minimization are validated by simulations.

Mots clés: WBANs Coexistence; ZIGBEE Channels; Interference Mitigation; Latin Rectangles

Domaines: Réseaux et télécommunications [cs.NI]

Mohamad Jaafar Ali, Hassine Moungla, Mohamed Younis, Ahmed Mehaoua. Distributed Scheme for Interference Mitigation of WBANs Using Predictable Channel Hopping. 18th International Conference on E-health Networking, Application & Services (Healthcom 2016), Sep 2016, Munich, Germany. ⟨hal-01374609⟩