gNodeB

The 5G base station; eNodeB is the 4G equivalent.

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A gNodeB is the base station of a 5G NR network. It terminates the radio link with the device and connects to the 5G core; the eNodeB is its 4G counterpart.

Why it matters

The name marks a generation boundary in the radio and its interfaces. A device that supports 5G NR still needs a gNodeB it can attach to, and an operator that lists 5G coverage is listing gNodeB deployments.

Base station in the path

  1. Device
  2. Radio access (RAN)
  3. Transport
  4. Mobile core HSS / HLR · PGW / UPF · IMS
  5. Internet
The gNodeB ends the radio link and connects to the 5G core; the core is separate.
Text description

In 5G, the gNodeB can be split into a central unit and a distributed unit. The split changes where processing sits, not the role: the base station terminates the radio link.

What to check

For a device, the relevant questions are the supported bands, the 5G mode and the operator's acceptance, not the base-station name. For a private 5G deployment, confirm whether the gNodeB is standalone or anchored to an LTE network. The RAN term covers the wider layer.

FAQ

Is gNodeB the same as 5G?

It is the 5G NR base station. A 5G device can also use an LTE anchor in non-standalone mode, so not every 5G session runs through a gNodeB alone.

What is an eNodeB?

The 4G LTE base station. It connects to the evolved packet core.

Does a gNodeB assign the IP address?

No. The core gateway assigns the address; the gNodeB carries the radio traffic.

Learn more

Sources

  1. 3GPP TS 38.300: NR and NG-RAN overall description