Online power control method based on Lyapunov framework in energy collection safety transmission system

Abstract

The invention discloses an online power control method based on a Lyapunov framework in an energy collection safety transmission system. A sending end is a source node powered by an energy collectiondevice, a source node transmits information to the two destination nodes, each time slot selects to send information to one of the two destination nodes according to a channel state, and the information needs to be confidential for the other destination node. In a transmission process, the data, the energy arrival amount and the channel state change randomly, and under the condition that the statistical information is unknown, a Lyapunov optimization framework is utilized to convert a sending power control problem which takes the energy use efficiency in the optimization security transmissionas a target into an optimization problem which minimizes the drift and punishment upper bound, and finally, a solution of the optimal sending power is obtained. According to the control method, statistical characteristics of channels and collected energy do not need to be known in advance, transmission fairness of two destination nodes is considered while collected energy is efficiently utilized to transmit confidential information, and the control method is a practical method.

Description

technical field [0001] The invention relates to the field of information communication, and specifically uses a Lyapunov optimization framework to design an online power allocation scheme to realize efficient utilization of energy and confidential transmission of information. Background technique [0002] With the continuous development of the information industry, the energy consumption for information transmission and processing is increasing, and the carbon emissions generated in the process of traditional energy consumption will lead to environmental problems such as climate warming. As a green communication method, harvesting energy from the environment for information transmission and processing has become an important topic in the research of communication systems. There are a wide range of energy sources in the environment, such as solar energy, kinetic energy, thermal energy, environmental noise, or electromagnetic radiation. In recent years, communication academic ...

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Problems solved by technology

Traditionally, information is encrypted at a high level to protect information security. The basis for achieving information security is the high computational complexity of decryption without a key.

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