The Internet of Things is rapidly becoming an integral part of everyday life. Low-powered wide area network are capable of providing reliable connectivity even in low-density areas and device consuming low amount of energy. The exponential increase in the use of Internet of things application across the globe will continue to generate more and more data traffic within the Internet of Things network. Thus, End device within Internet of Things network in the near future will rise up to billions of device operating across Internet of Things network, generating a necessity for more correct and reliable energy conservation Internet of things technology. This prompted the research work on optimized low-powered wide area network. The experiment has been carried out in various stages: firstly running of simulation over wireless sensor network without optimization using MATLAB Simulink and obtained the following result of 6.3997e-17 joules power consumption, secondly, the authors test the network with power optimization using particle swarm optimization algorithms and obtained a better result of 2.5230e-17 joules. The Long Range energy consumption is reduced by 60%. Lastly, different simulation test of Long Range Wide Area Network protocols with respect to some network communication parameters such as throughput, packet loss, delay, data transmission, buffer size, and network density.