Delay Constrained Energy Harvesting Networks with Limited Energy and Data Storage

Age-Minimal Transmission in Energy Harvesting Two-Hop Networks

“…We now have the following lemmas characterizing the optimal solution of problem (13): {x * i }. Lemmas 1 and 3 show that the sequence {x * i } N +1 i=2 is non-increasing, and derive necessary conditions for it to strictly decrease.…”

“…In this case, the following theorem shows that the optimal solution is achieved by sending all updates back to back with the minimal interupdate time possible to allow the reception of all of them by the end of the relatively small session time T . Theorem 1 Let N d ≤ T < (N + 1)d. Then, the optimal solution of problem (13) is given by…”

“…By Lemma 2, this occurs only if x * i = 2d for 2 ≤ i ≤ N . Hence, we set x N +1 = T −(N −2)d−x 1 , and observe that problem (13) in this case reduces to a problem in only one variable x 1 as follows…”

Performance Analysis of Buffer-Aided Relaying System Based on Data and Energy Coupling Queuing Model for Cooperative Communication Networks

“…A data throughput maximization problem is investigated to obtain the optimal power allocation for delay-constrained traffic and no-delay-constrained traffic, respectively. The authors in [12] address the delay limited throughput maximization problems for an energy harvesting transmitter equipped with finite data buffer and energy buffer in the single user channel, the twoway channel, and the two-way relay channel, respectively. Further, both [13,14] consider the resource optimal problem for the multirelay scenario with limited data and energy buffers.…”

“…A distributed power control mechanism for the relaying terminals is developed by using stochastic game method. Specifically, all in [10][11][12][13][14] adopt the buffer-aided relay equipped both data buffer and energy buffer with the assumption of noncausal channel state information (CSI) and energy state information (ESI) which actually are not reasonable in practical scenario.…”