VERIZON · USA · C-BAND + mmWAVE

5G NR PHY for Verizon Engineers — C-band, mmWave, Vendor Diversity

Verizon 5G UWB (Ultra Wideband) combines C-band (n77, 3.7-3.98 GHz) for capacity with mmWave (n261, 28 GHz) for hotspot deployments. Vendor diversity (Samsung vRAN deployments) added complexity to an already challenging deployment.

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Verizon Spectrum Holdings

n77 / C-band: 60 MHz initially, more after FAA airspace clearance. n261 / 28 GHz: hundreds of MHz for hotspots and FWA. n13 850 MHz for low-band coverage. n2 PCS 1900 MHz refarmed.

Verizon Architecture

Verizon partnered with Samsung for major vRAN deployment. CU/DU/RU disaggregated. RIC platforms for AI/ML optimization. Open Fronthaul throughout.

mmWave Specifics

n261 28 GHz: μ=3 (120 kHz SCS), 264 PRBs per 200 MHz channel, 64-beam SSB sweep. Beam tracking critical for moving UEs. Coverage limited; relies on small-cell density.

FWA (Fixed Wireless Access)

Verizon's 5G Home (FWA) service uses both C-band and mmWave. Fixed-CPE devices simplify beam management; PHY tuning prioritizes throughput stability over mobility handover.

Engineer Skills Profile

Samsung vRAN experience, mmWave beam-management expertise, multi-band carrier-aggregation tuning, FWA-specific KPI optimization, Standalone vs Non-Standalone migration knowledge.

Common Engineering Issues

mmWave coverage holes (rain attenuation), C-band 4G interference at sector boundaries, beam-failure rates higher than sub-6 expected, scheduler tuning for FWA-vs-mobile UE mix.

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