Dynamic mode selection and energy distribution method in energy capture D2D network

Abstract

The invention discloses a dynamic mode selection and energy distribution method in an energy capture D2D network. The method comprises the following steps: taking K time slots as one transmission stage in consideration of the time-slot transmission for a cellular system, which is coexisting with a battery powered user, of D2D in energy capture energy supply; dynamically selecting a resource reuse mode for the user under different channel conditions and energy states by use of a signal to noise ratio (SNR) threshold at each time slot of the transmission stage, and constructing a utility index by combining the current channel information with the formerly acquired channel information, performing online energy distribution and power control according to the utility index parameter; when the current time slot channel utility index is greater than the mean value of the previous utility indexes, applying all available energy of the current time slot to the current time slot data sending, otherwise, only using a half of energy and reserving the other half to the later time slots; after determining the energy value used by the current time slot, controlling the user sending power by taking the maximum user transmission rate sum as the target under the limitation of the energy and the 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

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