How High-Altitude Platforms (HAPS) Can Accelerate Post-Conflict Telecommunications Recovery: The Case of Yemen

Executive Summary

Post-conflict telecommunications recovery sits at the intersection of humanitarian urgency, economic reconstruction, and geopolitical stability. Traditional rebuild models—fibre backbones, tower rollouts, switching infrastructure—are capital intensive, slow to deploy, and often constrained by damaged logistics, regulatory fragmentation, and security risks.

High-Altitude Platform Systems (HAPS)—operating in the stratosphere at ~20km altitude—offer a fundamentally different deployment paradigm. Acting as persistent aerial base stations, HAPS can:

• Restore coverage rapidly across wide geographies

• Bypass damaged terrestrial infrastructure

• Provide interim backbone and access capacity

• Enable phased, investment-aligned network reconstruction

Using Yemen as a case study, this article demonstrates that HAPS is not merely a stop-gap solution—it can be a strategic accelerant for rebuilding telecom ecosystems, de-risking investment, and enabling new hybrid network architectures.

1. Yemen: A Telecommunications System in Fragmentation

Yemen’s telecommunications landscape reflects the broader fragmentation of the state:

• Multiple competing authorities controlling infrastructure

• Damage to fibre backbones and switching centres

• Power instability affecting tower uptime

• Limited international connectivity resilience

• Patchy 4G rollout with inconsistent coverage

Operators such as Yemen Mobile, Sabafon, YOU, and Y-Telecom have continued to function under extreme constraints, but:

• Coverage gaps remain extensive

• Network quality is inconsistent

• Data capacity is severely constrained

• Investment has been minimal due to political risk

Critically, Yemen illustrates a broader truth applicable to Syria, Libya, Sudan, and parts of Sub-Saharan Africa:

Post-conflict telecom recovery is not just about rebuilding—it requires rethinking the architecture entirely.

2. The Structural Limitations of Traditional Rebuild Models

2.1 Time-to-Deploy Constraints

Rebuilding fibre networks and tower infrastructure can take:

• 3–5 years for national backbone restoration

• 18–36 months for urban densification

• Longer in insecure or logistically constrained regions

2.2 Capital Intensity

Traditional rebuild requires:

• High upfront CAPEX

• Long payback periods

• Investor confidence in regulatory stability

In Yemen, these conditions are not yet met.

2.3 Physical Vulnerability

Terrestrial infrastructure is inherently exposed to:

• Conflict-related damage

• Theft and vandalism

• Power supply instability

2.4 Fragmented Governance

Multiple authorities complicate:

• Spectrum allocation

• Licensing frameworks

• Infrastructure sharing agreements

These constraints collectively create a deployment deadlock:

• Too risky for large-scale investment

• Too urgent to delay connectivity restoration

3. HAPS: A Different Deployment Paradigm

High-Altitude Platform Systems operate in the stratosphere, typically at ~20km altitude, providing:

• Wide-area coverage (100–200 km radius per platform)

• Persistent connectivity (weeks to months endurance)

• Rapid deployment (weeks, not years)

3.1 Technical Capabilities

HAPS platforms can support:

• LTE / 4G / emerging 5G NTN services

• Backhaul links (microwave, optical, satellite integration)

• Direct-to-device connectivity (increasingly viable)

• Emergency communications overlays

3.2 Deployment Characteristics

• Launch and operationalisation within weeks

• Minimal ground infrastructure requirements

• Flexible repositioning based on demand

3.3 Strategic Positioning

HAPS sits between:

• Satellites (broad coverage, high latency, high cost)

• Terrestrial networks (high capacity, slow deployment)

It effectively creates a middle layer in a hybrid architecture.

4. Yemen Use Case: HAPS as a Recovery Accelerator

4.1 Rapid Coverage Restoration

In Yemen:

• Large rural and peri-urban populations remain underserved

• Tower infrastructure is inconsistent or damaged

A single HAPS platform could:

• Restore coverage across multiple governorates

• Provide immediate LTE-level connectivity

• Enable basic voice, messaging, and data services

4.2 Interim Backhaul Solution

With fibre routes compromised:

• HAPS can act as a backhaul relay layer

• Connect isolated base stations

• Bridge gaps between surviving network nodes

4.3 Urban Capacity Augmentation

In cities such as Sana’a and Aden:

• Existing infrastructure is overloaded

• Power outages affect network performance

HAPS can:

• Offload traffic from congested networks

• Provide resilience during outages

4.4 Enabling Humanitarian Connectivity

Humanitarian organisations require:

• Secure, reliable communications

• Rapid deployment capability

HAPS provides:

• Immediate connectivity for NGOs and UN agencies

• Support for emergency coordination

• Connectivity for displaced populations

5. Economic and Investment Implications

5.1 Lowering Entry Barriers

HAPS reduces:

• Initial CAPEX requirements

• Time-to-revenue

• Infrastructure dependency

This creates:

• New entry models (MVNO, wholesale operators)

• Opportunities for infrastructure funds

• Blended finance structures (public-private-donor)

5.2 Phased Investment Model

HAPS enables a staged rebuild strategy:

Phase 1: Immediate Connectivity

• HAPS deployment

• Basic service restoration

Phase 2: Hybrid Expansion

• Integration with surviving terrestrial assets

• Selective tower and fibre investment

Phase 3: Long-Term Infrastructure

• Full terrestrial rebuild where viable

• HAPS retained for resilience and rural coverage

5.3 De-Risking Capital Deployment

Investors gain:

• Early revenue streams

• Reduced stranded asset risk

• Flexibility to scale investment based on stability

6. Regulatory and Spectrum Considerations

6.1 Spectrum Strategy

HAPS can operate:

• Using existing MNO spectrum (host model)

• Via dedicated HAPS spectrum allocations

• Under managed shared spectrum frameworks

In Yemen:

• A coordinated national spectrum approach will be essential

• International advisory support likely required

6.2 Licensing Models

Potential models include:

• National wholesale HAPS operator

• Multi-operator shared platform

• Public-private partnership structures

6.3 Governance Challenges

Key risks include:

• Competing authorities

• Lack of unified regulatory framework

• Spectrum coordination disputes

7. Integration with Emerging Technologies

7.1 Non-Terrestrial Networks (NTN)

HAPS aligns with 3GPP NTN evolution:

• Complementing LEO satellite systems

• Enabling seamless hybrid connectivity

7.2 eSIM and Digital Identity

HAPS-enabled networks can support:

• Rapid subscriber onboarding

• Digital identity frameworks for displaced populations

7.3 AI-Driven Network Management

HAPS networks can be optimised through:

• AI-based traffic routing

• Dynamic capacity allocation

• Predictive maintenance

8. Risks and Limitations

8.1 Technical Risks

• Platform endurance and reliability

• Weather-related constraints

• Payload limitations

8.2 Commercial Risks

• Uncertain demand elasticity

• Pricing challenges in low-income markets

• Competition from satellite providers

8.3 Political Risks

• Fragmented governance

• Security concerns

• Regulatory unpredictability

9. Strategic Insight: HAPS as a Catalyst, Not a Replacement

The critical strategic insight is:

HAPS should not be positioned as a substitute for terrestrial networks—but as a catalyst that accelerates their recovery.

In Yemen, this means:

• Immediate connectivity without waiting for stability

• Enabling economic activity earlier

• Supporting digital services and financial inclusion

• Creating conditions for long-term investment

10. Broader Applicability Beyond Yemen

The Yemen case is directly applicable to:

• Syria

• Libya

• Sudan

• Parts of the Sahel

In each case, HAPS can:

• Break the rebuild deadlock

• Enable phased infrastructure recovery

• Support humanitarian and economic objectives simultaneously

11. Conclusion

Post-conflict telecommunications recovery demands new thinking. The traditional model—rebuild first, connect later—is no longer viable in fragile environments.

HAPS offers a fundamentally different approach:

• Connect first

• Stabilise demand

• Invest progressively

In Yemen, this could transform the trajectory of digital recovery—turning a fragmented telecom landscape into a phased, investable, and resilient ecosystem.

Bridge Connect is developing a structured, chargeable Yemen Telecom Recovery Portfolio designed for:

• Investors

• Operators

• Governments

• Development finance institutions

This portfolio provides decision-grade intelligence, including:

• Investment pipelines

• Operator deep-dives

• Infrastructure mapping

• Risk frameworks

• HAPS deployment models

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