Infrastructure Sharing: Tower Sharing, Active and Passive Sharing Regulations

Executive Summary

Infrastructure sharing enables telecom operators to share physical towers, equipment, and spectrum, reducing costs and accelerating network rollout:

• Types: Passive sharing (towers, buildings) and Active sharing (antennas, spectrum)
• Regulatory basis: DoT Infrastructure Sharing Guidelines, 2008 (revised 2018)
• Benefits: Cost savings 30-40%, faster deployment, reduced environmental impact
• Spectrum sharing: Allowed between operators holding same band
• IP-I providers: Infrastructure Providers Category-I license for tower companies
• Revenue implications: License fee calculated on combined AGR for active sharing
• Restrictions: No cartel behavior, competition law compliance required

This guide examines infrastructure sharing regulations, passive vs active sharing, spectrum sharing framework, and compliance requirements.

1. Types of Infrastructure Sharing

Passive Sharing

Key Feature: Operators share physical infrastructure but use separate active equipment.

Active Sharing

Key Feature: Operators share active radio equipment and spectrum.

2. DoT Infrastructure Sharing Guidelines (2008, Revised 2018)

Key Provisions

Infrastructure Providers Category-I (IP-I)

License: Specialized license for entities providing passive infrastructure.

Major IP-I Operators: Indus Towers, ATC India, Bharti Infratel (now merged with Indus)

3. Passive Sharing Framework

Benefits of Passive Sharing

Passive Sharing Agreement

No DoT Approval Required

Notification Only:

• Operators inform DoT of passive sharing arrangements
• No prior approval needed
• Commercially negotiated terms

4. Active Sharing Framework

DoT Approval Process

Active Sharing Benefits

Revenue Implication (License Fee)

AGR Calculation:

Example:

• Operator A revenue: ₹10,000 crores
• Operator B revenue: ₹8,000 crores
• Spectrum sharing in 1800 MHz band
• Combined AGR: ₹18,000 crores
• License fee: 8% of ₹18,000 crores = ₹1,440 crores (split proportionally)

5. Spectrum Sharing

Regulatory Framework (2015 Spectrum Sharing Guidelines)

Spectrum Sharing Agreement

Example: 1800 MHz Spectrum Sharing

Scenario:

• Airtel has 2x10 MHz in Delhi (1800 MHz)
• Vodafone Idea has 2x5 MHz in Delhi (1800 MHz)
• Both blocks are contiguous (1805-1815 MHz)
• Agreement: Pool 2x15 MHz, share 50-50

Benefit:

• Both operators can offer 15 MHz LTE channels (better speeds)
• Cost: Additional SUC on shared quantum

6. Spectrum Trading

Spectrum Trading vs Sharing

Spectrum Trading Framework (2015 Guidelines)

7. Infrastructure Sharing and Competition Law

CCI (Competition Commission of India) Scrutiny

Compliance Requirements

8. Network Sharing (RAN Sharing)

Radio Access Network (RAN) Sharing

India Status: MORAN widely adopted (Indus Towers), MOCN/GWCN limited (requires deep commercial coordination).

9. Benefits and Challenges

Benefits

Challenges

10. International Comparison

Global Infrastructure Sharing Models

11. 5G and Infrastructure Sharing

5G-Specific Considerations

Expected Trends

12. Compliance Checklist

For Operators (Passive Sharing)

• Identify existing towers for sharing
• Negotiate commercial terms with tower owner (IP-I)
• Inform DoT of sharing arrangement (notification)
• Ensure structural integrity of shared tower
• Maintain separate active equipment
• Pay license fee on own AGR (no combined calculation)

For Operators (Active Sharing)

• Prepare technical feasibility study
• Apply to DoT jointly with sharing partner
• Obtain DoT approval before implementation
• Ensure equipment compatibility (vendor coordination)
• Calculate combined AGR for license fee purposes
• File quarterly sharing compliance reports with DoT

For IP-I Operators

• Obtain IP-I license from DoT (₹2.5 crores net worth)
• Pay 8% license fee on infrastructure leasing revenue (AGR)
• Provide open access to all licensed operators (non-discriminatory)
• Maintain tower structural safety certifications
• Comply with EMF radiation limits (9.2 W/m²)
• File quarterly AGR returns with DoT

13. Key Takeaways for Practitioners

1. Passive Sharing Liberalized: No DoT approval required—operators can freely share towers, shelters, buildings.

2. Active Sharing Needs Approval: Radio equipment, spectrum sharing require DoT permission—60-90 day approval process.

3. AGR Implication Critical: Active sharing with spectrum pooling triggers combined AGR calculation—license fee increases.

4. IP-I Model Dominant: Indus Towers, ATC India provide passive infrastructure to all operators—specialized IP-I license required.

5. Spectrum Sharing Enabled: Since 2015, operators can share spectrum in same band—increases effective capacity.

6. CCI Compliance Essential: Infrastructure sharing agreements must avoid cartelization—no price coordination, tariff alignment.

7. 5G Sharing Complex: Small cells, MIMO antennas, edge computing create new sharing opportunities and technical challenges.

Conclusion

Infrastructure sharing has become the backbone of India's telecom expansion, enabling rapid 4G rollout and now 5G deployment while containing costs. The IP-I licensing framework—dominated by Indus Towers and ATC India—provides shared passive infrastructure to all operators on non-discriminatory terms, reducing tower proliferation and environmental impact. Active sharing and spectrum sharing, while more complex and requiring DoT approval, unlock further efficiencies, particularly for 5G where small cell deployment and massive MIMO benefit from shared infrastructure. Practitioners must navigate the regulatory framework (DoT guidelines, license fee implications) and competition law compliance (CCI scrutiny of potential cartelization) while structuring sharing agreements that balance commercial interests with technical feasibility.