A Dynamic Mode Selection and Energy Allocation Method in Energy Harvesting D2D Networks

Abstract

The present invention is a dynamic mode selection and energy allocation method in an energy capture D2D network. Aiming at a cellular system in which D2D powered by energy capture and battery-powered users coexist, time-slotted transmission is considered, and K time slots are used as one transmission. stage, in each time slot of the transmission stage, the SNR threshold is used to dynamically select the resource reuse mode for the user under different channel conditions and energy states, and the utility index is constructed by combining the current and past channel information. Index parameters are used for online energy allocation and power control. When the channel utility index of the current time slot is greater than the average value of the previous utility index, all the available energy of the current time slot is used for data transmission of the current time slot. Otherwise, only half of the energy is used and the The other half is reserved for future time slots. After the energy value used in the current time slot is determined, the user's transmission power is controlled with the goal of maximizing the user transmission rate under the constraints of energy and cellular link rate.

Description

technical field [0001] The invention relates to the field of wireless communication D2D energy capture, in particular to a dynamic mode selection and energy allocation method in an energy capture D2D network. Background technique [0002] In recent years, with the rapid development of wireless broadband networks and smart terminals, various new businesses and service innovations continue to emerge, followed by a rapid increase in energy consumption. In a wireless network environment, each node usually uses a fixed energy device such as a battery as an energy source. However, when the environment of the network node is too complicated, it is difficult to replace the battery or charge the battery for the node, so the energy limitation becomes an impact A key factor in wireless network lifecycle and performance. In this case, the Energy Harvesting (EH) technology, which can provide energy for lower power consumption node devices from wind energy, solar energy, and radio freque...

AI Technical Summary

Problems solved by technology

[0006] (2) Multiplexing mode: D2D users communicate on the D2D direct link by multiplexing the resources of traditional cellular users. In this case, the resource utilization efficiency is high, but the D2D link and the cellular link interfere with each other

According to the survey, there is no research and discussion on mode selection in energy harvesting D2D networks

Images