The substantial increase in the number of base stations (BSs) compels researchers to focus on spectral efficiency (SE) and energy efficiency (EE) in wireless networks. To this end, we propose an intracell frequency band exiling (ICE) technique as a promising solution for green wireless networks. In the proposed technique, operating frequency bands of mobile users are assigned from upper frequency bands (UFBs) to lower frequency bands (LFBs) by suitably adjusting their coverage area to provide energy-efficient communications. To do this, we derive ICE probabilities on a log-normally distributed traffic model and calculate the EE and area SE (ASE) considering the power consumption model. The simulation results demonstrate that the ASE can be improved by increasing the traffic density. However, increasing the traffic density does not improve the EE beyond a certain threshold. Therefore, we present the tradeoff between EE and ASE and provide an optimum operating point. In addition, we show the ICE performance to be better than that of the existing cell-zooming (CZ) technique, unveil the ICE relation with beyond-5G (B5G) networks, and, finally, provide a cell-exiling manager system to illustrate the applicability of the proposed technique for various implementations.

中文翻译：

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绿色无线网络的小区内频带汇流：实现，性能指标和用例

基站（BS）数量的大量增加迫使研究人员专注于无线网络中的频谱效率（SE）和能量效率（EE）。为此，我们提出了一种小区内频带溢出（ICE）技术，作为绿色无线网络的有希望的解决方案。在提出的技术中，通过适当地调整移动用户的覆盖区域以提供节能通信，将移动用户的操作频带从较高频带（UFB）分配给较低频带（LFB）。为此，我们在对数正态分布的流量模型上得出ICE概率，并考虑功耗模型来计算EE和区域SE（ASE）。仿真结果表明，可以通过增加流量密度来改善ASE。然而，增加流量密度不会使EE超过一定阈值。因此，我们提出了EE和ASE之间的折衷方案，并提供了最佳的工作点。此外，我们展示了ICE性能要优于现有的Cell-Zooming（CZ）技术，揭示了ICE与超越5G（B5G）网络的关系，最后提供了Cell-Exiling Manager系统来说明所提出的技术在各种实现方式中的适用性。