Abstract-Deploying energy harvesting nodes can significantly extend the lifetime of a battery powered wireless network. On the other hand, such systems call for specific design principles to efficiently utilize the dynamic levels of instantaneously available energy. In contrast to the conventional wireless networks, transmission policies for these systems should take into account the battery recharge process of the node as well as its battery capacity. In this work, we focus on the problem of finding the optimal transmission policy to maximize the short-term throughput of an energy harvesting transmitter node with power control and a limited energy storage capacity. The transmission policy in this problem is strictly constrained with both the energy recharge process and the energy storage capacity of the node. A discrete model with packets of energy arrivals is considered for energy recharge. Under the assumption of an increasing concave power-rate relationship, the short-term throughput maximizing transmission policy is identified in this paper. The necessary conditions such a policy should satisfy are identified and an algorithm to yield the unique policy that satisfies these conditions is presented. The performance of this algorithm is then observed through numerical results.
In REF , the energy harvesting process is modeled as a discrete process with "packets of energy" arriving at specific time instances, and an optimal solution is provided for short-term throughput maximization.
Short-Term Throughput Maximization for Battery Limited Energy Harvesting Nodes
2011 IEEE International Conference on Communications (ICC)
2011 IEEE International Conference on Communications (ICC)
Computer Science