Abstract
Growing data traffic generated by several sources in a Body Area Network (BAN) leads to congestion. One of the major challenges in BANs is congestion alleviation. Congestion causes packet drops which leads to lower network performance and higher delay due to packet retransmission. In this study, a novel traffic redirection based congestion control scheme is proposed in BANs. In the proposed scheme, when a sensor node is congested, its neighboring nodes select new next hop node. New next hop node selection is based on the queue size and hop counts to the sink of the neighboring nodes. Simulation results show that our protocol provides significant improvement in packet delivery ratio and end-to-end delay compared with the existing protocol.
Highlights
Significant advances in sensor networks have provided many studies around the human body such as Body Area Network (BAN) or Body Sensor Network (BSN)
In inter-BAN communication, gathered information is forwarded to the access points or the gateways
The proposed scheme has been designed for congestion control in intra-BAN communications
Summary
Significant advances in sensor networks have provided many studies around the human body such as Body Area Network (BAN) or Body Sensor Network (BSN). A BAN enables physiological and vital sign monitoring of the patients whereby physicians can receive required healthcare information. Information from the patients is received by some sensors such as Electrocardiograms (ECGs), Electro-Encephalograms (EEGs), Electromyograms (EMGs) and body temperature and oxygen saturation (Fig. 1). Some sensors such as ECG (Baig et al, 2013) or EEG are used for real time monitoring. Intra-BAN communication handles sensors on or in the human body. In inter-BAN communication, gathered information is forwarded to the access points or the gateways. Communications between the gateway and the physicians are related to the beyond-BAN tier
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