Mixed data transmission strategies have been proposed to address the energy imbalance problem in wireless sensor networks. However, whether the energy of all nodes can be balanced by this approach, especially under the communication range constraints of sensor nodes, is lack of study. In this paper, we present a novel analytical model for the two-hop based mixed data transmission and derive its energy balance bounds. It is found that the limits of the mixed data transmission scheme on energy balance are only determined by the power profiles of the communication system. This power profile is indicated by a newly discovered parameter which is defined as the premium power ratio of the system.
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