Energy consumption in a modern cellular communication system is increasing as there is a tremendous increase in demand for high data rate coupled with Quality of Service requirements from regulators and Quality of Experience from customers. Reduction of the network energy consumption is necessary in terms of economical perspective of the operators. Among the methods, dense deployment of small cells into macro is the current research focus towards reduction of cellular wireless networks energy consumption. In this work, we have first identified existing surveys on Energy-efficient wireless communication. Then the important key parameters that are discussed are identified and ranked based on frequency of occurrence. Here, we present a comprehensive survey on various energy consumption reduction methods, their applicability and current standings. Among various methods classification power control mechanism is presented. We noted that the design philosophy for the communication system was based on Spectral Efficiency. The energy efficiency consideration for determining transmission power in particularly for the downlink scenario was never been given due importance until recently. We hope this survey will help future researcher to identify research area,use appropriate performance parameter and energy-saving methods in green communication.

随着对高数据速率的需求急剧增加，加上监管机构对服务质量的要求以及客户的体验质量，现代蜂窝通信系统中的能源消耗正在增加。从运营商的经济角度来看，降低网络能耗是必要的。在这些方法中，将小型小区密集部署到宏是当前减少蜂窝无线网络能耗的研究重点。在这项工作中，我们首先确定了有关节能无线通信的现有调查。然后，根据出现的频率对讨论的重要关键参数进行识别和排序。在这里，我们对各种降低能耗的方法，其适用性和现状进行了全面的调查。在各种方法中，提出了分类功率控制机制。我们注意到，通信系统的设计理念是基于频谱效率的。直到最近，才特别重视确定传输功率的能效考虑，尤其是在下行链路情况下。我们希望这项调查能够帮助未来的研究人员确定研究领域，在绿色通信中使用适当的性能参数和节能方法。