The nodes in Mobile Ad Hoc NETworks (MANETs) work on low power batteries. So, reducing energy consumption has been the recent focus of wireless adhoc network research. The power in the nodes dissipates even when the network interface is idle. This paper presents a topology maintenance algorithm, Equivalence Partitioning method which is based on the connectivity among the nodes in the network. This algorithm partitions the network into equivalence sets in which one of the nodes in the set is active and the other nodes in the set turn off their radio. In addition, this topology maintenance algorithm can be made to work along with the 802.11 power saving mode to improve communication latency and system lifetime.
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