CBRS 也就是公民宽带无线电服务，这项服务是 3.5 GHz 频段 (Band 48) 中 150 MHz 的一系列频谱（3.55 至 3.7 GHz），可以用于专用移动网络。
A network firewall is hardware or software that restricts and permits the flow of traffic between networks.
A next gen firewall combines traditional firewall capabilities with advanced security services to deliver enhanced protection for the organization.
Security Service Edge or SSE includes advanced security capabilities such as Secure Web Gateway, Cloud Access Security Broker, Zero Trust Network Access and Firewall as a Service.
Wi-Fi (often written as wifi or WiFi) defines the protocols that enable communications over wireless routers and access points using 802.11.