In the field of mobile wireless communication, energy efficient protocols are crucial in order to ensure a widespread use of wireless technologies. These protocols determine the sending strategy, i.e. the decision when, where and how much data is transmitted, as well as the packet size and field strength of the sending antenna. We defined a model for the energy household of smart sensors, who are able to store the digitalized data and forward it to a base station at defined times, depending on the energy consumption. In this paper we present the sending strategy which is used in this model, as well as simulations we performed in order to test our sending strategy.