Power-domain based dynamic spectrum access (PDSA) techniques are proposed for sharing 28 GHz spectrum of any Mobile Network Operator (MNO) with in-building small cells (SCs) of the other countrywide. By controlling the transmission power of SCs, PDSA techniques explore the traditional interweave access by operating an SC at the maximum transmission power and the underlay access by allowing to operate an SC at a lowered transmission power separately, as well as jointly. Average capacity, spectral efficiency, energy efficiency, cost efficiency, and throughput per SC user equipment (UE) are derived for an arbitrary number of MNOs in a country. By varying the spectrum reuse factor for the millimeter-wave spectrum in each building of SCs, extensive numerical and simulation results and analyses for an illustrative scenario of a country consisting of four MNOs are carried out for the interweave and underlay techniques when applying separately, as well as the hybrid interweave-underlay technique and the static licensed spectrum allocation (SLSA) technique. It is shown that, due to gaining more shared spectra, the hybrid interweave-underlay technique provides the best, whereas the SLSA provides the worst, performances of all techniques in terms of the average capacity, spectral efficiency, energy efficiency, cost efficiency, and throughput per UE of an SC. Moreover, we show that the hybrid interweave-underlay technique, the interweave technique, and the underlay technique, respectively, can satisfy the expected requirements of spectral and energy efficiencies for Sixth-Generation (6G) networks by reusing each MNO’s 28 GHz spectrum to SCs of about 33.33%, 50%, and 50% less number of buildings than that required by the SLSA for a spectrum reuse factor of six per building of small cells.

中文翻译：

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用于6G的多运营商认知无线电网络中内置小蜂窝的基于功率域的动态毫米波频谱接入技术

提出了基于功率域的动态频谱接入（PDSA）技术，以与其他国家/地区的室内小蜂窝小区（SC）共享任何移动网络运营商（MNO）的28 GHz频谱。通过控制SC的传输功率，PDSA技术通过在最大传输功率下运行SC来探索传统的交织访问，以及通过允许以较低的传输功率分别或联合运行SC来进行底层访问。得出一个国家中任意数量的MNO的平均容量，频谱效率，能效，成本效率和每个SC用户设备（UE）的吞吐量。通过更改每个SC建筑物中毫米波频谱的频谱重用因子，分别针对分别应用时的交织和底层技术，混合交织-底层技术和静态许可频谱分配（SLSA）技术，对由四个MNO组成的国家的示例性场景进行了广泛的数值和模拟结果分析，并进行了分析。 。结果表明，由于获得了更多的共享频谱，从平均容量，频谱效率，能效，成本效率和成本方面考虑，混合交织-底层技术提供了最好的性能，而SLSA提供了所有技术的最差性能。 SC的每个UE的吞吐量。此外，我们分别显示了混合交织-底层技术，交织技术和底层技术，