Hence, in order to prolongate the system's lifetime, some sensors can be kept inactive while others perform all the tasks.
Fusco Giordano, Gupta Himanshu 2010, '-NetApproach to Sensor -Coverage',EURASIP Journal on Wireless Communications and Networkinghttp://jwcn.eurasipjournals.com/content/2010/192752. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)