Abstract: “In this paper, delay constraint and energy saving are jointly studied for efficiently transmitting packets in smartphones. We propose a new energy-saving transmission mechanism. The proposed mechanism first utilizes the lazy transmission concept to estimate the last transmission interval of each packet. Before transmitting a packet p, we also adopt the accompanied transmission concept to involve more other packets tobe transmitted with packet p. The well-known knapsack problem can be applied to solve the selection of accompanied packets under a given bandwidth capacity. Finally, simulation experiments are performed to demonstrate the effectiveness of the proposed mechanism in the delay performance and energy conservation.”

Keywords: energy saving, delay constraint, smartphone, knapsack problem.