Performance Evaluation of the Sleep Mode Operation in the EEE 802.16e MAC

The sleep mode operation is a significant part in power management in IEEE 802.16e for increasing life time of a station by saving energy consumption. In this operation, two key performance metrics, energy consumption and frame response delay, should be taken into account. These metrics are affected by initial sleep window (T
_min
), final sleep window (T
_max
), and average interarrival time (T
₁
) of MAC frame to initiate awakening. Thus, this paper models the sleep mode operation in the IEEE 802.16e MAC and evaluates the effect of T
_min
and T
_max
on the performance of power management by considering T
₁
. An analytical model for the operation is validated from computer simulation.