This document summarizes a research paper that proposes a new topology control method called Network Connectivity based Topology Control (NCTC) to improve network lifetime in mobile ad hoc networks. The method aims to balance energy consumption and node connectivity in two phases: 1) minimizing interference between links, and 2) estimating an energy-efficient topology based on minimal weight paths. Simulation results using the NS2 simulator show that NCTC achieves better network lifetime, packet delivery ratio, lower overhead, and end-to-end delay compared to existing methods.