什么是CBR？

What is CBRS used for?

The primary uses for CBRS spectrum are:

• Macro extension, or providing additional wireless capacity for carriers’ macro networks, especially in urban settings
• 固定无线访问（FWA）进行回程
• Privately-owned and operated mobile networksfor enterprises and municipalities. This page focuses on this use case, for enterprise private mobile networks.

CBR的三个层是什么？

此范围的三层用户是：

• 现任人，例如美国海军和固定卫星
• 优先访问许可证（PAL），通常是付费以许可部分频谱的运营商
• 一般授权访问（GAA），例如将此频谱用于专用网络的无牌企业。

Because these tiers concurrently share CBRS spectrum, the FCC requires that GAA users cannot interfere with PAL or incumbent users, and PAL users cannot interfere with incumbent users. A Spectrum Access System (SAS) is required to manage this potential interference.

哪些设备支持CBR？

Nearly all new cellular phones, such as Apple iPhones and Google Pixels, support the CBRS band. Laptops from Hewlett Packard, Dell, and Lenovo as well as tablets from Apple, Samsung, and Zebra also support this band. The ecosystem of CBRS-compatible devices will continue to grow.

为什么要CBR？

The primary reasons enterprises deploy a CBRS network for private mobile networks are to:

• 改善广阔区域室外覆盖范围。基于CBRS的蜂窝无线无线覆盖每个访问点（AP）的面积比Wi-Fi AP更大，但每次AP吞吐量较低。
• 改善网络分割,或者德的能力ploy a separate, overlay network that operates over relatively clean spectrum, especially for critical traffic, such as a manufacturing or an industrial network, a separate voice communication network for employees, or retail point-of-sale devices.

New subscription-based services for CBRS are coming to market which integrate all these hardware and software components and are ready for enterprise IT network integration. This fully integrated solution considerably simplifies deployment compared to other competing solutions in the market.

What are the vertical use cases for CBRS?

Many different verticals are using CBRS to complement existing investments in wireless. Some examples are:

• 仓储和分销中心：自动驾驶汽车和机器人的无线连接范围更大
• Healthcare:分配给员工的智能手机协作应用程序的私人移动网络连接
• 大型公共场所：network segmentation for backstage staff operations, reserving Wi-Fi for guest services
• 零售:clean, dedicated spectrum for staff-operated, enterprise owned devices in congested store environments
• K-12 schools:connectivity to digital deserts with outdoor wireless backhaul to student homes

CBRS专用移动网络使用LTE还是5G？

如今，CBRS私人移动网络经常依靠LTE。但是，将来它也将支持5G。当它支持5G时，我们还将在欧洲看到更多的CBRS型实施。

基于CBRS的专用网络与Wi-Fi相比如何？

CBR频带旨在适应不同的细胞标准，包括4G（LTE），最终5G，但不适合Wi-Fi。所有CBRS系统目前均基于LTE。

企业对CBR感兴趣，以此作为增强而不是更换其Wi-Fi系统的一种方式。CBR和Wi-Fi之间的主要差异包括：

• 覆盖范围：室内CBRS LTE AP比典型的室内Wi-Fi AP高约4倍。由于CBR在3.5 GHz频谱中运行，因此传播与在2.4 GHz或5 GHz下运行的Wi-Fi大致相同。
• 设计：传统上，部署CBRS系统比部署Wi-Fi系统更为复杂，部分原因是诸如EPC和SAS之类的组件的要求。
• 成本：While CBRS-based LTE is a less expensive cellular solution than the traditional, small cell-based architectures, the per-AP price of CBRS is much higher than the typical per-AP Wi-Fi price. However, CBRS’s greater coverage and lower associated cabling and installation costs somewhat close this gap.