Wireless sensor networks resource allocation method based on wireless energy transmission

Abstract

The invention discloses a wireless sensor networks resource allocation method based on wireless energy transmission. The method is applied to a wireless energy carried transmission non-orthogonal multiple access communication system. The method comprises the steps of S1, setting initial energy efficiency q<0> and setting an initial numerical value n=0; S2, assuming that n is equal to n+1, settinga first time allocation coefficient tau<0><(n)>, a second time allocation coefficient tau<(n)> and a transmitting power p<(n)>, and calculating energy efficiency q<(n)>; S3, judging whether q<(n)>-q<(n-1)> is smaller than epsilon or not, if the q<(n)>-q<(n-1)> is smaller than the epsilon, entering a S4, otherwise, entering a S5, wherein the epsilon is an error threshold value; S4, determining thetau<0><(n)> and tau<(n)> as the optimum time allocation coefficients and determining the p<(n)> as the optimum transmitting power; and S5, assuming that the n is equal to n+1, substituting tau<0><(n-1)>, tau<(n-1)> and P<(n-1)> into a function F(tau<0>, tau, q, P), calculating the P<(n)> through utilization of an interior point method, calculating the energy efficient q<(n)>, and entering the S3.According to the method, the energy utilization efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a wireless sensor network resource allocation method based on wireless energy transmission. Background technique [0002] At present, battery life has always been one of the important indicators of modern wireless mobile devices, and it is very troublesome and costly to replace or recharge the batteries in a large number of wireless devices. In response to this situation, wireless energy transfer technology is proposed to solve the problem of battery life. This technology utilizes the far-field radiation characteristics of electromagnetic waves, wireless devices can receive radio frequency signals transmitted from energy transmitters, and the energy of the energy transmitters can be harvested through various renewable energy sources such as solar energy, wind power, and water power. Wireless energy transmission technology is suitable for supporting low-power wir...

AI Technical Summary

Problems solved by technology

[0006] The main disadvantage of existing resource allocation schemes in the prior art is that the scheme for nodes to send information uses time division multiple access technology (TDMA) to transmit information, although it can ensure that users will not be interfered with each other, but under the current shortage of spectrum resources , will occupy a lot of wireless spectrum resources and have low spectrum efficiency, which is unfavorable to the develop...

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