在RF/VLC异质网络中进行覆盖范围分析和交付策略
Applied optics
|August 12, 2025
概括
本研究引入了一种用于分析混合可见光和射频网络覆盖范围的新方法. 拟议的方法提高了覆盖率的概率,特别是在不同的用户协会策略下.
科学领域:
- 无线通信网络是无线通信网络.
- 随机几何模型的建模
- 覆盖范围分析 覆盖范围分析
背景情况:
- 在异质网络 (HetNets) 中进行覆盖范围分析是具有挑战性的,因为用户的流动性和不同的协会策略.
- 现有的模型往往无法准确预测混合可见光通信 (VLC) 和射频 (RF) 环境中的性能.
研究的目的:
- 提出一个新的框架,基于协会策略 (CPCA-AS) 的接触概率和覆盖率近似值,用于分析混合VLC/RF HetNets中的覆盖率 (CPr).
- 评估不同协会策略对网络覆盖率的影响.
主要方法:
- 利用一个随机几何框架来建模只有射频,只有VLC和混合射频/VLC场景.
- 纳入了接触概率机制,并分析了机会性VLC和最大接收信号功率 (MRSP) 关联策略.
- 采用吉尔-佩拉兹逆向定理和拉普拉斯变换用于VLC CPr近似,以及马尔科夫和玛不等式用于RF下界.
主要成果:
- CPCA-AS准确地模拟了覆盖性能,并捕捉了光探测器视野 (FoV) 对干扰和关联的影响.
- 通过蒙特卡洛模拟验证,证明了改进的CPR.
- 机会主义的VLC策略在高干扰/大 FoV 中表现出色;MRSP在低干扰/低速率设置中表现更好.
结论:
- CPCA-AS提供了一种可靠的方法,用于复杂的HetNets中的覆盖范围分析.
- 关联策略的选择显著影响覆盖性能,在不同的网络条件下,特定策略是最佳的.
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