Modeling and performance analysis of energy harvesting wireless communication systems with reliable energy backup,International Journal of Communication Systems

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Modeling and performance analysis of energy harvesting wireless communication systems with reliable energy backup
International Journal of Communication Systems ( IF 1.7 ) Pub Date : 2020-12-04 , DOI: 10.1002/dac.4698
Shengda Tang ₁ , Liansheng Tan ₂ , Tao Liu ₃

Affiliation

Energy harvesting wireless communication system (EH‐WCS) has the capability of harvesting energy for system operations from the surrounding renewable energy sources. However, the randomness and instability of the harvested energy will result in the depletion of the energy consumption. To provide reliable communication services with the quality of service (QoS) guarantee, it is necessary for the EH‐WCS to use a reliable energy backup (REB) for supplying energy to the system during the failure of its primary energy source. In this paper, a novel stochastic model, i.e., the extended Markov fluid flow model, is proposed to describe the EH‐WCS with REB. The Kolmogorov forward equations of the system model are derived. By solving the corresponding equations, we obtain the stationary distributions of the key performance metrics for the EH‐WCS with REB, including the average energy consumption rate of the EH‐WCS, the residual energy distribution, the average energy supply rate by REB, the packet queue length in data buffer, the data queue delay, and the packet blocking probability. A numerical example is provided to investigate the theoretical results, and the effects of the system parameters on the performance are further studied numerically. Both the theoretical insights and the numerical analyses are believed to be important for the design of EH‐WCSs.

中文翻译：

具有可靠能量备份的能量收集无线通信系统的建模和性能分析

能量收集无线通信系统（EH-WCS）具有从周围的可再生能源中收集能量用于系统运行的能力。然而，所收集能量的随机性和不稳定性将导致能量消耗的耗尽。为了提供具有服务质量（QoS）保证的可靠通信服务，EH-WCS必须使用可靠的能量备份（REB），以便在其主要能源故障时为系统提供能量。本文提出了一种新颖的随机模型，即扩展的马尔可夫流体流模型，来描述带有REB的EH-WCS。推导了系统模型的Kolmogorov正向方程。通过求解相应的方程，我们获得带有REB的EH-WCS关键性能指标的平稳分布，包括EH-WCS的平均能耗率，剩余能量分布，REB的平均能量供应率，数据缓冲区中的数据包队列长度，数据队列延迟和数据包阻塞概率。通过数值算例对理论结果进行了研究，并对系统参数对性能的影响进行了数值研究。理论上的洞察力和数值分析都被认为对EH-WCS的设计很重要。数值研究了系统参数对性能的影响。理论上的洞察力和数值分析都被认为对EH-WCS的设计很重要。数值研究了系统参数对性能的影响。理论上的洞察力和数值分析都被认为对EH-WCS的设计很重要。

更新日期：2021-01-04

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