The Wireless ad-hoc network has dissimilar civilian and defense applications and that’s why it has gained substantial attention in recent days. The major consideration in inventing such a network is to diminish power utilization because of the truth that wireless nodes are usually charged by batteries barely. Topology control is one of the chief energy preserving practices which has been mostly considered and utilized in ad-hoc wireless network. Topology control method permits each and every wireless node to choose certain subset of neighbors and extend network connectivity by consuming the lowest amount of transmission power. In this paper we review the different techniques used to improve the network capacity of MANETs with supportive communications.