when i want to make an approach to reduce energy consumption in ZIgBee sensor in cognitive radio networks CRN . what is the layer in ZigBee sensor that i must worked in it ? Why ? and can i work in physical layer?
Energy consumption is effected with both physical and MAC layer operations , you need to figure it out the exact optimization of the existing operation you will work to reduce the energy for example a procedure that defines the status of the node (idle, in use, hibernating ).
M. Younan, S. Khattab, and R. Bahgat, "Evaluation of an Integrated Testbed Environment for The Web of Things," in International Journal On Advances in Intelligent Systems (IntSys), vol. 8, no. 3&4, pp. 467-482, Nov. 2015.
Hi, Hadeel, I should do at last two things to reduce power consumption - to turn off the node and to measure not so often (for example turn on once in 5 min or more, depending of physical quantity that you measure) and to combine for example 10 measurements and to send them once to receiver.