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Traditional Radio Access Networks

Philadelphia_081122A
[Philadelphia]
 

- Overview

A traditional radio access network (T-RAN) is the cellular network component that connects user devices, like phones, to the mobile core network via radio waves. It uses base stations with antennas to create coverage areas and manage radio communication. 

This system handles the transmission and reception of signals and uses technologies like WiFi, Bluetooth, 4G, and LTE, often allowing devices to connect to multiple cellular networks simultaneously (Multi-RAT). 

1. How T-RAN works:

  • Device connection: Your phone converts voice and data into digital signals, which are sent as radio waves to the nearest base station.
  • Base station function: The base station, also known as a transceiver, is connected to sector antennas that cover a specific geographical area.
  • Core network link: The base station sends the signals to the mobile core network, typically via a fiber optic backhaul connection, which then directs them to the internet.
  • Resource management: The RAN is responsible for coordinating network resources and managing functions like handover management to ensure a seamless connection as you move between different base stations.

 

2. Key components:

  • Base stations (BS): These are the towers that house the antennas and are the primary point of connection for wireless devices.
  • Antennas: These transmit and receive radio waves to and from devices within a specific area, or "sector".
  • Radio transceivers: These are the devices in the base stations that handle the wireless signal transmission and reception, connecting the user to the cloud.
  • Silicon chips: Both user equipment (like your phone) and the core network use silicon chips to help make the RAN function correctly.

 

3. Technologies supported:

  • 4G LTE and 5G NR: These are the primary cellular connection technologies for modern devices.
  • Multi-RAT: This refers to the ability of devices to connect to multiple radio access technologies, such as a phone connecting to both a 4G and a 5G network simultaneously.
  • Other technologies: The RAN also utilizes other technologies like WiFi and Bluetooth for various communication needs.
 
 
 

[More to come ...]


 


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