Frequency Vary 3 (FR3) is positioned between sub-6 GHz and mmWave
In sum – what to know:
Not mmWave 2.0 – FR3 sits between sub-6 GHz and mmWave and is designed to increase mid-band capability upward with out a few of the identical elements that restricted mmWave.
Launch 18 relevance – FR3 has entered the 5G-Superior roadmap as an evolutionary capability layer, shaping early 6G pondering.
Deployment actuality – The band’s success will hinge on macro-site co-location, cautious cell planning, and reasonable expectations round indoor efficiency.
Because the trade’s consideration shifts in direction of 6G, renewed curiosity in higher-frequency spectrum is not being pushed by millimeter wave. As a substitute, the main focus has turn out to be the Frequency Vary 3 (FR3) — a band positioned between sub-6 GHz and mmWave that guarantees extra capability with out forcing operators into ultra-dense community designs. Its options have already entered the 5G-Superior roadmap and are influencing early 6G pondering. Understanding what this spectrum can — and can’t — ship is more and more necessary.
3GPP’s FR3 spans 7.125 GHz to 24.25 GHz, sitting between FR1 (sub-6 GHz bands) and FR2 (millimeter wave, above 24 GHz). As such, FR3 is commonly described as “higher mid-band,” providing a stability of protection and capability that makes it a horny a part of the 5G-Superior roadmap and a possible element of future 6G methods.
Vish Nandlall, expertise strategist and former telecom methods engineer, stated FR3 represents a extra reasonable and foundational alternative for future networks than some higher-frequency bands presently into consideration, together with sub-terahertz spectrum: “Whereas costly to clear and public sale, FR3 is a essential evolution and has sturdy near-term industrial viability. In contrast, sub-THz spectrum (above 90 GHz) is physics-limited: huge propagation loss, line-of-sight necessities, and immature {hardware} make it a distinct segment for backhaul or specialised enterprise makes use of, not mass-market broadband.”
Equally, in a bit written for RCR, Jessy Cavazos, 6G options professional at Keysight Applied sciences, stated to count on a rise in protection‑parity trials for FR3 in 2026 from current C‑band websites, as this spectrum band overtakes Sub-THz, main the “sensible curve.”
Why it’s not mmWave 2.0
At first look, it’d seem that FR3 is one thing like “mmWave-lite.” In follow, nevertheless, it behaves way more like mid-band spectrum than millimeter wave, notably relating to propagation traits and deployment economics. Whereas FR3 operates at greater frequencies than right now’s major 5G mid-band, it doesn’t exhibit the identical diploma of extreme path loss, poor constructing penetration, or blockage sensitivity which have constrained mmWave deployments.
Simply as importantly, FR3 is being studied with macro or macro-like cell deployments in thoughts, with an emphasis on reusing current website grids the place attainable. In contrast, mmWave’s very restricted protection radius has pressured ultra-dense small-cell architectures, driving up website acquisition complexity, energy consumption, and total community prices. FR3’s attraction lies in avoiding that densification cliff whereas nonetheless extending usable mobile capability into greater frequencies.
Actually, in line with Andreas Roessler, technical advisor at BackITapp Consulting, operators take into account FR3’s capability to co-locate with right now’s 5G macro base stations “an absolute requirement.” He wrote: “It’s the solely approach to comprise capital expenditure whereas extending networks into the higher midband.”
He added, nevertheless, that this co-location requirement introduces technical challenges. “3GPP must make FR3 co-location a part of the baseline in 3GPP’s Launch 21, the primary normative set of 6G specs,” he cautioned.
Doubtless use instances — and the case for extra spectrum
Whereas 5G promised immersive prolonged actuality (XR), Roessler argued that present spectrum allocations are poorly suited to the uplink-intensive XR use instances anticipated within the 6G period, notably at scale. FR3, he stated, is designed to supply the extra uplink capability these functions would require: “FR3 will fill that hole.”
Past XR functions, FR3 is predicted to allow different high-capacity and cell use instances, similar to industrial management, UAV connectivity, and dependable high-rate uplink for AI/edge functions. Notably, these frequencies are additionally well-suited for non-terrestrial networks (NTNs), that are anticipated to play an important position in reaching ubiquitous 6G connectivity.
Early testing is already underway. In 2024, Qualcomm and Keysight Applied sciences demonstrated what they described as the trade’s first end-to-end interoperability and knowledge connection within the FR3 band. The trial used Keysight’s E7515P UXM 5G wi-fi take a look at platform alongside a Qualcomm Applied sciences cell take a look at platform (MTP), a smartphone reference design used for validation and testing.
Extra just lately, SoftBank and Nokia examined FR3 in an out of doors 7 GHz band (7.125–8.4 GHz) area trial. The trial in contrast protection and radio traits of the 7 GHz band with industrial 5G Sub-6 (3.9GHz) by co-locating 7 GHz pre-commercial base stations subsequent to current 5G base stations on constructing rooftops. The purpose was to judge whether or not huge MIMO could possibly be used to ship contiguous outside protection throughout the encircling space.
From a regulatory perspective, the 7 GHz band is now beneath research in ITU Areas 2 and three. In Area 1 (Europe, the Center East, and Africa), nevertheless, parts of the band have been excluded from consideration as a result of NATO utilization.
In the long run, FR3’s viability — and its capability to keep away from mmWave’s deployment destiny — will rely upon cautious cell planning, antenna design, and reasonable expectations round indoor efficiency.