Several types of research have been made on short-range and low-level wireless networks energy consumption since their appearances until today. To examine the specificities of each, we have done a comparative study to highlight the strengths and weaknesses based on energy consumption, scope and reliability of mesh architecture to conclude open international standard, and more adapted to industrial needs. This paper addresses the low power mechanisms provided by 6LoWPAN and the ZigBee Protocol with their two version (ZigBee-Pro and ZigBee IP), providing comparative assessments based on the results obtained by available in specialized literature and different researchers. The results show that ZigBee IP can be the most appropriate protocol in case we want to connect multiple nodes with fast communication and optimized power consumption

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