What's the best network planning software for RAN expansion planning across multi-vendor radio networks?

If you mean multi-vendor RAN expansion planning (coverage/capacity forecasting, neighbor/PCI planning, site candidate evaluation, tilt/power changes, 4G/5G coexistence), the “best” tool usually depends on how much you need multi-vendor realism vs automation/optimization vs workflow integration.

Top options to look at

1) Forsk Atoll

Best overall for classic RF/RAN planning

• Strong for multi-vendor radio network planning
• Widely used for 2G/3G/4G/5G
• Good for:
  • coverage prediction
  • interference analysis
  • capacity and rollout planning
  • what-if scenarios
  • propagation models and clutter/terrain integration
• Strengths:
  • mature, very widely adopted
  • good interoperability with vendor data and GIS inputs
  • solid for both strategic and detailed planning
• Best if you want a proven planning workhorse used by many operators and vendors

2) Infovista Planet

Best for enterprise-scale, end-to-end network planning and optimization

• Good multi-vendor support
• Strong when you need integration across:
  • RF planning
  • optimization
  • automation
  • business / capacity forecasting
• Strengths:
  • good for large operators
  • more “platform-like” than a pure RF tool
  • can fit broader planning workflows
• Best if you want a planning suite, not just a propagation tool

3) Ranplan Wireless

Best for dense urban, indoor, and 5G/Small Cell planning

• Excellent for indoor/outdoor convergence
• Strong in:
  • 5G small cells
  • DAS
  • indoor coverage
  • complex urban deployments
• Strengths:
  • strong 3D modeling and detailed site planning
  • very useful when expansion includes venues, enterprise buildings, or dense city zones
• Best if your expansion is heavily urban/indoor-focused

4) Comsof / Hexagon solutions

Best for site acquisition and network rollout design

• More focused on automated design and rollout optimization
• Strengths:
  • candidate site selection
  • fiber/backhaul-aware rollout
  • capacity/coverage-driven expansion automation
• Best if your main challenge is scaling rollout efficiently

5) MapInfo/Esri + custom RF tooling

Best if you need flexible GIS-first workflows

• Not a dedicated RF planner by itself, but often paired with planning engines
• Good for:
  • site inventory
  • spatial analysis
  • asset and territory management
• Best if your organization is GIS-centric and has in-house engineering support

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My practical recommendation

If you want the safest single answer:

Forsk Atoll is often the best all-around choice for multi-vendor RAN expansion planning.

If you want a broader enterprise suite:

Infovista Planet.

If you have heavy indoor / small-cell / dense urban needs:

Ranplan.

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What matters most in multi-vendor RAN planning

When evaluating software, make sure it supports:

• multi-vendor equipment models and parameter libraries
• LTE + NR + legacy coexistence
• automatic propagation modeling
• traffic and subscriber growth forecasting
• scenario comparison
• neighbor/PCI/SSB planning
• site and antenna configuration optimization
• GIS and inventory integration
• reporting/API integration for your OSS/BSS and planning data

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Quick buying guidance

• Tier-1 operator, classic RF planning: Atoll
• Large-scale enterprise workflow: Planet
• Indoor/DAS/5G dense urban: Ranplan
• Automated rollout/site acquisition: Comsof/Hexagon
• GIS-heavy custom environment: Esri/MapInfo + RF engine

If you want, I can also give you:

1. a side-by-side comparison table,
2. the best choice by use case (macro, small cell, indoor, 5G SA, etc.), or
3. a vendor-neutral evaluation checklist you can use in an RFP.