Wireless sensor networks (WSNs) are used in many data-intensive applications. Although, it faces the problem to send all the data sensed by the sensor nodes to the base station within an application’s lifetime due to the limited power supplies. Several mobile nodes like data mules, robotics and mobile base station were used for minimizing power utilization. In this paper, several mobile nodes are studied and the low-priced throwaway mobile relays have been projected which reduce the energy utilization of those WSNs. This proposed work has two main aspects which differ from previous work. First, the mobile nodes are implemented in the low-priced mobile sensor platforms. Second, in the entire optimization framework, the power for both wireless transmission and mobility are reduced. The proposed Centralized Algorithm and Distributed Algorithm used in three stages, in first stage, a most favourable direction-finding tree is computed in which no nodes can move. In second stage, the topology of the routing tree is enhanced by adding new nodes. Finally, the nodes are relocated to get better the routing tree without altering the arrangement of that topology.