New Radio

Also known as: 5G NR, NR

Protocol AccessNon-Terrestrial AutomationPerformanceScalability Telecommunications
Definition

The 3GPP-specified air interface for 5G, defining the physical layer waveform, flexible numerology, and radio protocol stack (PHY, MAC, RLC, PDCP) that terrestrial base stations and non-terrestrial network payloads alike implement to provide 5G radio access.

Key Points
  • Defines the 5G physical layer, including OFDM-based waveform design and scalable subcarrier spacing (numerology) that adapts to different frequency bands and latency requirements
  • Serves as the common air interface for both terrestrial 5G RAN and 5G NTN, meaning NTN extensions build on the same underlying protocol rather than defining a separate radio technology
  • Supports carrier aggregation and advanced beamforming as core capabilities rather than optional add-ons, unlike earlier cellular generations
  • Numerology flexibility is what allows a single air interface standard to serve both ultra-low-latency terrestrial use cases and NTN links with propagation delays orders of magnitude higher
  • The specific NR capabilities available to a device or network depend on which 3GPP release it implements, since NR itself is extended incrementally release over release
Concept

NR is the layer that actually carries data over the air, whether that air interface connects a device to a terrestrial base station or, via NTN extensions, to a satellite. Its numerology — the subcarrier spacing and symbol duration used for a given transmission — can be scaled to suit different deployment conditions, which is the mechanism that lets the same underlying air interface standard support both the tight latency budgets of terrestrial URLLC use cases and the much longer propagation delays inherent to non-terrestrial links.

Explainer

NR's practical significance for the NTN family of terms in this corpus is that it is the shared foundation all of them extend rather than a separate technology each reimplements — 5G NTN architecture, NTN cells, and bent-pipe and regenerative NTN payloads all carry NR waveforms and NR protocol procedures, adapted with NTN-specific timing and mobility extensions rather than a redesigned air interface. This has a direct procurement consequence: NR capability itself is release-dependent, so a device's actual radio performance (supported numerologies, carrier aggregation combinations, beamforming capability) depends on which 3GPP release's NR specification it implements, independent of whether it also supports NTN extensions. For CE verticals, this means evaluating a piece of 5G equipment requires checking both its NR release baseline and its NTN feature support separately — a device can implement an advanced NR release for excellent terrestrial performance while supporting only an early, limited NTN feature set, or vice versa, and the two capabilities do not automatically track each other.