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The expansion in an average lifetime and increased cost of health analysis have resulted in cost-effective methods
for healthcare monitoring. Wireless Body Area Network (WBAN) is used for continuous monitoring of patient to enhance
health care and quality of life. As the sensors worn on the human body have small size, low transmission power and restricted
battery, it necessitates the development of energy efficient routing protocols for increasing the network lifetime. This paper
proposes an Optimized Energy Efficient and Quality-of-Service aware Routing Protocol (OEEQR) to achieve longer
network lifetime, energy efficiency, lower delay and high throughput. In the proposed protocol, the cost function with
residual energy, distance and path loss as its parameters is optimized using Particle Swarm Optimization (PSO) technique.
The proposed cost function determines the best feasible next hop to send the data to the sink.