Network Architecture

• Evolved Packet Core (EPC): An Evolved Packet Core (EPC) is a key component of a Long-Term Evolution (LTE) network that provides the core network functionalities required for mobile data communication. The EPC is critical for the efficient and reliable operation of LTE networks, and it plays a vital role in delivering high-quality mobile services to users.

• Spectrum Access System (SAS): A Spectrum Access System (SAS) manages and coordinates the use of the shared radio spectrum in a dynamic spectrum access (DSA) system. In Citizens Broadband Radio Service (CBRS) networks, the SAS ensures that both licensed and unlicensed users can operate efficiently and without interference in the shared 150 MHz of spectrum from 3.55 to 3.7 GHz.

• BreezeView Management System: This is a core element of our setup and allows to operate and maintain our private LTE Network, with the possibility to monitor and control the performance of base stations and CPEs.

• Firewall: Another critical component to ensure the communication in the network is safe and secure for all the participants.

• Point of Presence (POP): Crown Castle provided backend connectivity with a Gbps link.

Every participant, to be connected to our network, must have a so-called Customer Premise Equipment (CPE). This is a transceiver used to connect to the private LTE network and transfer data to and from the CBRS radio heads. 

The CPE is installed in the exterior wall of the house, trying to achieve Line-of-Sight (LoS) with the CBRS radio heads, in order to have better propagating conditions. The CPE is then connected-through an Ethernet cable-to a WiFi access point located inside the customer premises. The WiFi AP is then used to create a private WiFi network that can be used to connect to the Internet with a smartphone, a laptop, a computer or any other WiFi-enabled device.