Energy Scheduling Mechanism For Intelligent Terminal With Simultaneous Wireless Information And Power Transfer

D2D communication is widely used due to low transmission power and high transmission efficiency.Although 5G technology is developing rapidly,the increase in terminal interconnection equipment and the increase in data volume have increased the energy consumption of smart terminals.Meanwhile,existing D2 D devices often use batteries to supply power,and the limited battery capacity simply cannot guarantee large-scale data transmission requirements for a long time.The increase of data volume and the limitation of battery capacity have greatly reduced the endurance time of terminal equipment.In order to solve this problem,the industry has proposed energy harvesting technology to break through the bottleneck of battery capacity,thereby improving energy utilization efficiency.The purpose of this article is to study how to use the collected energy for stable D2 D communication,that is,to study the problem of energy scheduling.Although many studies have made some progress on energy scheduling,but many of them have not fully considered the characteristics of the energy transmission process.The specific manifestations are as follows: 1)The power transmission loss of wireless transmission is large,and energy scheduling during wireless charging is not fully considered;2)The D2 D communication distance is short and the transmission power is small.The process consumption in the communication process must also consider the entire communication energy cost;3)The existing battery energy storage system will cause frequent charge and discharge under the wireless charging technology,which shortens the battery life.Based on the above problems,this paper makes the following researches on energy scheduling strategies based on D2 D smart terminals.1.This thesis first studies the scenario where the base station performs point-to-point wireless power transmission on low-power smart terminal devices.With SWIPT,the study considered how to control the transmission power for online energy scheduling when the wireless channel status is random and the total energy transmitted by the base station is certain,thereby improving energy transmission efficiency.2.Based on the energy consumption characteristics of D2 D communication and the characteristics of battery energy storage,we studied the problem of online energy scheduling in D2 D communication scenarios.We considered combine the battery and super capacitor to store energy,and added the process consumption into the total energy cost.Meanwhile,the study limited the maximum transmission power of D2 D communication to reduce interference to cellular communication.And,for Bernoulli's energy arrival model,we design an optimal energy scheduling strategy.Aiming at the independent and identically distributed energy arrival model,we design a suboptimal energy scheduling strategy.Finally,we the analyzed the performance of the two optimization strategies and the gap with the greedy algorithm...