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What is CBRS?

What is CBRS?

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CBR解释了

CBRS or Citizens Broadband Radio Service is 150 MHz of spectrum (from 3.55 to 3.7 GHz) in the 3.5 GHz band (“Band 48”). Although CBRS connotes many things in the market, CBRS technically is 150 MHz (from 3.55 to 3.7 GHz) of United States-only spectrum and can be used for private mobile networks.

CBR是用什么？

CBR频谱的主要用途是：

宏扩展，或为运营商的宏网络提供额外的无线容量，尤其是在城市环境中
Fixed wireless access(FWA) for backhaul
私有和经营的移动网络对于企业和市政当局。此页面专注于此用例，用于企业专用移动网络。

What are the three tiers for CBRS?

The three tiers of users for this spectrum are:

现任,如美国Navy and fixed satellite
Priority Access License (PAL), which are typically carriers that pay to license part of the spectrum
General Authorized Access (GAA) such as unlicensed enterprises that utilize this spectrum for private networks.

由于这些层同时共享CBRS频谱，因此FCC要求GAA用户不能干扰PAL或现任用户，并且PAL用户不能干扰现有的用户。需要一个频谱访问系统（SAS）来管理此潜在干扰。

What devices support CBRS?

几乎所有新的蜂窝电话，例如苹果iPhone和Google像素，都支持CBR频段。惠普（Hewlett Packard），戴尔（Dell）和联想（Lenovo）的笔记本电脑以及苹果，三星和斑马的平板电脑也支持这支乐队。与CBRS兼容设备的生态系统将继续增长。

Why CBRS?

企业部署专用移动网络的CBR网络的主要原因是：

Improve wide-area outdoor coverage. CBRS-based cellular wireless covers more area per access point (AP) than a Wi-Fi AP, but at a lower per-AP throughput.
改善网络细分或部署单独的覆盖网络的能力，该网络在相对干净的频谱上运行，尤其是对于关键流量（例如制造业或工业网络），员工的单独语音通信网络或零售点的销售点设备。

您需要部署基于私有CBRS的LTE移动网络的什么？

Deploying private LTE networks has traditionally been far more complicated compared to deploying an enterprise-grade Wi-Fi network. LTE networks require an EPC (Evolved Packet Core) which manages the network, including device attachment, roaming between LTE small cells, and data plane traffic forwarding. LTE networks also require enterprises to provision and manage SIM (Subscriber Identity Management) cards or eSIMs for each device. Additionally, when using the CBRS spectrum for LTE wireless, enterprises must integrate with FCC certified systems for Spectrum Access Service (SAS) to manage potential interference from neighboring radios.

基于CBR的新的基于订阅的服务正在上市，该服务将所有这些硬件和软件组件集成在一起，并准备好用于企业IT网络集成。与市场上的其他竞争解决方案相比，这种完全集成的解决方案大大简化了部署。

CBR的垂直用例是什么？

许多不同的垂直领域正在使用CBR来补充无线上的现有投资。一些例子是：

Warehousing and distribution centers:wireless connectivity at greater range for autonomous vehicles and robots
卫生保健：private mobile network connectivity for collaboration apps on smartphones assigned to staff
Large public venues:用于后台员工运营的网络细分，保留Wi-Fi供客人服务
零售：干净，专用的频谱，用于拥挤的商店环境中的员工操作，企业拥有的设备
K-12学校：与数字沙漠的连通性以及户外无线回程与学生住宅的连接

Do CBRS private mobile networks use LTE or 5G?

Today, CBRS private mobile networks frequently rely on LTE. However, in the future, it will also support 5G. When it supports 5G, we will see more CBRS-type implementations in Europe as well.

How do CBRS-based private networks compare to Wi-Fi?

The CBRS band is intended to accommodate different cellular standards, including 4G (LTE) and eventually 5G, but not Wi-Fi. All CBRS systems are currently based on LTE.

Enterprises are interested in CBRS as a way to augment, not replace, their Wi-Fi systems. Key differences between CBRS and Wi-Fi include:

Coverage:An indoor CBRS LTE AP covers roughly 4x more than a typical indoor Wi-Fi AP. Because CBRS operates in the 3.5 GHz spectrum, propagation is roughly the same as Wi-Fi operating at 2.4 GHz or 5 GHz.
Design:Deploying a CBRS system has traditionally been more complex than deploying a Wi-Fi system, partially because of the requirement of components such as an EPC and a SAS.
Cost:虽然基于CBRS的LTE比传统的基于小单元的架构较便宜，但CBR的每次ap价格远高于典型的每日Wi-Fi价格。但是，CBRS的覆盖范围更大，相关的电缆和安装的成本略有差距。