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Performance evaluation of power save protocols using carrier sensing in multihop ad hoc networks

Extending system lifetime by effectively managing power on participating nodes is critical in wireless ad hoc networks. Recent work has shown that, by appropriately powering off nodes, energy may be significantly saved. The IEEE 802.11 protocol specifies a simple power save mechanism (PSM) to conserve energy. Data frames are advertised during a fixed period of time, known as an ATIM window, at epochs known as beacon intervals.