Abstract
Wireless Body Area Networks (WBANs) is a new technology for remote monitoring of patients. Sensor nodes are placed on different parts of the body such as implants and on body to collect data and transfer to the Sink node. Change in body posture, placement of sensors, priority of sensor data and energy consumption makes routing very difficult. Therefore, a Priority based Energy Aware (PEA) routing protocol is proposed in this paper. Child nodes choose a parent node connected to Sink based on a cost function that depends upon priority, residual energy and distance of node. Residual energy facilitates load balancing i.e. selection of different nodes for transmission. Distance helps in successful packet delivery to the parent node and caters for body postures. Priority helps to select a best possible path to forward the critical data keeping in view the energy constraint in WBANs. Comparison of different cost functions with proposed PEA protocol for performance metrics such as network lifetime, throughput and residual energy reveals that the proposed protocol results in increased network lifetime, throughput improvement of around 50% and higher residual energy.
Highlights
Recent advances in sensor technology and wireless communications have led to the advent of a new technology named as Wireless Body Area Networks (WBANs)
In this proposed scheme, routing based protocol is presented in WBANs to show how to effectively communicate between nodes placed on different parts of body
All Child node (CN) would be able to know about the Parent node (PN) which in turn will know about the Sink node location
Summary
Recent advances in sensor technology and wireless communications have led to the advent of a new technology named as Wireless Body Area Networks (WBANs). Data of nodes with high priority is required to be forwarded reliably and without information loss As this node forwards its data more frequently than other, it might result in energy depletion if proper communication strategy is not adopted. All these issues make routing a big challenge for a very small WBAN. The factors mentioned above, point to the requirement of a routing strategy that effectively communicates the data of all nodes to central coordinator catering for the body postures, that provides energy efficient solution to address the major energy concerns of WBANs and that takes priority data into account.
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