We propose using Carrier Sensing (CS) for distributed interference management in millimeter-wave (mmWave) cellular networks where spectrum is shared by multiple operators that do not coordinate among themselves. In addition, even the base station sites can be shared by the operators. We describe important challenges in using traditional CS in this setting and propose enhanced CS protocols to address these challenges. Using stochastic geometry, we develop a general framework for downlink coverage probability analysis of our shared mmWave network in the presence of CS and derive the downlink coverage probability expressions for several CS protocols. To the best of our knowledge, our work is the first to investigate and analyze (using stochastic geometry) CS for mmWave networks with spectrum and BS sites shared among non-coordinating operators. We evaluate the downlink coverage probability of our shared mmWave network using simulations as well as numerical examples based on our analysis. Our evaluations show that our proposed enhancements lead to an improvement in downlink coverage probability, compared to the downlink coverage probability with no CS, for higher values of signal-to-interference and noise ratio (SINR). Interestingly, our evaluations also reveal that for lower values of SINR, not using any CS is the best strategy in terms of the downlink coverage probability.

中文翻译：

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使用载波感应的毫米波网络中不协调的频谱共享

我们建议在毫米波（mmWave）蜂窝网络中使用载波侦听（CS）进行分布式干扰管理，在该网络中，频谱由多个运营商共享，而运营商之间并不协调。另外，即使基站站点也可以由运营商共享。我们描述了在这种情况下使用传统CS的重要挑战，并提出了增强的CS协议来应对这些挑战。使用随机几何，我们为存在CS的共享mmWave网络的下行链路覆盖概率分析开发了一个通用框架，并导出了几种CS协议的下行链路覆盖概率表达式。据我们所知，我们的工作是第一个调查和分析（使用随机几何）mmWave网络的CS，该频谱具有在非协调运营商之间共享的频谱和BS站点。我们使用仿真以及基于我们的分析的数值示例来评估共享毫米波网络的下行链路覆盖概率。我们的评估表明，与更高的信噪比和噪声比（SINR）值相比，与没有CS的下行链路覆盖概率相比，我们提出的增强功能导致下行链路覆盖概率有所提高。有趣的是，我们的评估还显示，对于较低的SINR值，就下行链路覆盖概率而言，不使用任何CS是最佳策略。以获得更高的信号干扰和噪声比（SINR）。有趣的是，我们的评估还显示，对于较低的SINR值，就下行链路覆盖概率而言，不使用任何CS是最佳策略。以获得更高的信号干扰和噪声比（SINR）。有趣的是，我们的评估还显示，对于较低的SINR值，就下行链路覆盖概率而言，不使用任何CS是最佳策略。