Energy Analysis of Contention Tree-Based Access Protocols in Dense Machine-to-Machine Area Networks

Figure 7

(a) Average energy consumed per device in a data collection round using DQ and CTA over the number of contention slots and (b) average energy consumed (left axis) and energy saving (right axis) per device in a data collection round using contention slots in DQ, in CTA, and in FSA.

(a)

(b)