India's Spectrum Allocation
n78 / 3300-3670 MHz: primary 5G capacity band. n28 / 700 MHz: low-band coverage (Jio). n5 / 850 MHz: refarmed coverage (Airtel). n79 / 4.5 GHz: limited deployment. mmWave bands (n257 / 28 GHz) auctioned but limited deployment due to cost.
Reliance Jio 5G
Pure SA from day 1. ~12,000+ cells deployed in initial rollout. Cloud-native vRAN with Cisco UCC + Samsung CMx + Nokia AirScale mix. Aggressive throughput targets — 1.5+ Gbps peak.
Bharti Airtel 5G
NSA-first leveraging existing LTE network. Vendor mix Ericsson + Nokia. Strong site-share with other operators. SA migration ongoing.
Engineering Opportunities
Massive RAN-engineer demand at Jio, Airtel, Vi, BSNL, plus tower companies and integrators. Roles: PHY engineer, RAN architect, drive-test, KPI tuning, SON.
Vendor Landscape
Major vendors active: Ericsson, Nokia, Samsung, Mavenir, NEC. Cisco for vRAN/RIC. Jio and Airtel both supporting Open Fronthaul.
India-Specific Challenges
Density (700M+ urban subscribers), heat dissipation (rooftop AAU thermal limits), regulatory pricing pressure (forces aggressive cost reduction), site-share complexity.
Education Pathway
Required: 4G LTE PHY foundation → 5G NR PHY (TS 38.211–215) → vendor-specific (Ericsson/Nokia/Samsung) → operator-specific (Jio architecture or Airtel architecture). Total ~3-6 months of focused study.