TITLE:
Hybrid IEEE 802.15.6 Wireless Body Area Networks Interference Mitigation Model for High Mobility Interference Scenarios
AUTHORS:
Anthony Mile, George Okeyo, Ann Kibe
KEYWORDS:
IEEE 802.15.6, Interference Mitigation, WBAN Mobility, Priority Queues, CSMA/CA
JOURNAL NAME:
Wireless Engineering and Technology,
Vol.9 No.2,
April
30,
2018
ABSTRACT: The field of Wireless Sensor Networks (WSNs) has revolutionized tremendously
in the recent past with its major application in Wireless Body Area Networks
(WBANs). This has in the same dimension attracted immense interests from the
researchers and technology providers. The operational modality of the WBANs is
that a few sensor nodes are placed in or around the body and that they are
meant to operate within a limited condition while providing high performance in
terms of WBAN life time, high throughput, high data reliability, minimum or no
delay and low power consumption. As most of the WBAN operates within the
universal Industrial, Scientific and Medical (ISM) Narrow Band (NB) wireless
band (2.4 Ghz) frequency band, this has posed a challenge in respect to inter,
intra and co-channel interference especially in dense areas and high mobility
scenarios. As well the body posture changes dynamically due to these mobility
effects. In this paper, we propose a hybrid WBAN interference mitigation
model based on Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)
Contention Window (CW) approach and User Priority (UP) queues. Using Omnet++ simulation, a comparison to the IEEE
802.15.6 based WBAN protocol is presented under the standing, walking sitting
and Lying postural mobility scenarios. The results show that the proposed
hybrid model outperforms IEEE 802.15.6 based CSMA/CA protocol in areas of
network throughput, bandwidth efficiency and network delay in these mobility
postures.