论文标题
网络-ELAA波束形成和覆盖范围分析，用于在空间非平稳的里奇尼亚通道中
Network-ELAA Beamforming and Coverage Analysis for eMBB/URLLC in Spatially Non-Stationary Rician Channels
论文作者
论文摘要
在车辆到基础结构（V2I）网络中，多组的访问点（APS）可以协作进行发射器波束成形以提供数据服务（例如，EMBB或URLLC）。 AP之间的协作有效地形成了具有超大孔径（即网络-ELAA）的网络线性天线阵列，其中无线通道表现出空间非机构性。这项工作的主要贡献在于分析考虑AP聚类的网络 - ELAA非稳态的RICIAN通道。假设：1）总发射功率是固定且在AP上均匀分布的，2）仅根据视线（LOS）路径形成梁，则发现光束成形增益凹入到群集大小。 AP群集的最佳大小在用户的位置，通道不确定性以及数据服务方面有所不同。距离ELAA较远的用户需要更大的群集尺寸。在比较与EMBB时，URLLC对通道不确定性更敏感，因此需要较大的簇尺寸来减轻通道褪色效果并扩展覆盖范围。最后，可以证明，与单个AP方案相比，网络-ELAA可以提供显着的覆盖范围扩展（在大多数情况下为50％或更多）。
In vehicle-to-infrastructure (V2I) networks, a cluster of multi-antenna access points (APs) can collaboratively conduct transmitter beamforming to provide data services (e.g., eMBB or URLLC). The collaboration between APs effectively forms a networked linear antenna-array with extra-large aperture (i.e., network-ELAA), where the wireless channel exhibits spatial nonstationarity. Major contribution of this work lies in the analysis of beamforming gain and radio coverage for network-ELAA non-stationary Rician channels considering the AP clustering. Assuming that: 1) the total transmit-power is fixed and evenly distributed over APs, 2) the beam is formed only based on the line-of-sight (LoS) path, it is found that the beamforming gain is concave to the cluster size. The optimum size of the AP cluster varies with respect to the user's location, channel uncertainty as well as data services. A user located farther from the ELAA requires a larger cluster size. URLLC is more sensitive to the channel uncertainty when comparing to eMBB, thus requiring a larger cluster size to mitigate the channel fading effect and extend the coverage. Finally, it is shown that the network-ELAA can offer significant coverage extension (50% or more in most of cases) when comparing with the single-AP scenario.
