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In this paper, we investigate the DAP placement problem and propose solutions to reduce the distance between DAPs and smart meters. The DAP placement problem is formulated to two objectives, e.g., the average distance minimization and the maximum distance minimization. The concept of network partition is introduced in this paper and practical algorithms are developed to address the DAP placement problem. Extensive simulations are conducted based on a real suburban neighborhood topology. The simulation results verify that the proposed solutions are able to remarkably reduce the communication distance between DAPs and their associated smart meters.