An Energy Efficient Routing Protocol for Wireless Body Area Sensor Networks Rahat Ali Khan 1 • Khalid Hussain Mohammadani 2 • Azhar Ali Soomro 1 • Jawad Hussain 1 • Sadia Khan 3 • Tahir Hussain Arain 1 • Hima Zafar 4 Ó Springer Science+Business Media, LLC, part of Springer Nature 2018 Abstract In this paper a reliable, efficient in terms of power consumption and high stable network is proposed for Wireless Body Area Sensor Networks. Eight sensor nodes are used from which two are recording critical data. These two sensors are not apart of multi-hopping but send data direct to the sink. Remaining six sensors are computed to become a forwarder node. Forwarder nodes gathers data from sensors and after aggregating sends ti the sink. Two parameters are set for cost function so that a forwarder node is selected. If a sensor is having minimum distance and maximum energy as compared to the entire nodes then it will be selected as forwarder node. Multi-hopping is used to reduce the distance of data communication and to save energy consumption. Simulation is carried out and shows stable results. Keywords Energy Á Sensors Á Routing protocol Á Health Á Sink 1 Introduction Advancement in electronics have resulted in developing micro-electro-mechanical systems (MEMS) technology. MEMS have enabled the development of sensors which are smart. MEMS sensors are small in size but are able to sense or gather the data and measure it as well. Development in wireless communication have enabled these sensors to be able to communicate using wireless technologies in an untethered manner. These sensors have the & Rahat Ali Khan rahataliikhan@gmail.com 1 Institute of Information and Communication Technology, University of Sindh, Jamshoro, Pakistan 2 ISRA University Hyderabad, Hyderabad, Pakistan 3 Al-Khidmat’s Diagnostic Centre Nazimabad Karachi, Karachi, Pakistan 4 Department of Mechatronics, Faculty of Information and Communication Technologies, MUET Jamshoro, Jamshoro, Pakistan 123 Wireless Pers Commun https://doi.org/10.1007/s11277-018-5285-5