The requirements for buildings have changed significantly in recent years: digitalization, mobile workplaces, networked machines, and security-related applications are now standard. What is often underestimated is mobile phone coverage inside buildings.
Despite well-developed public mobile networks, many office, industrial, and special-purpose buildings experience dead spots, unstable connections, or highly fluctuating quality. The cause is usually not the network itself, but rather the building structure.
Why mobile communications often fail inside buildings
Modern construction methods act as shields for radio signals.
These include, among others:
- Reinforced concrete and solid construction
- Energy-efficient facades with metal vapor deposition
- large building depths and basements
- industrial plants with high electromagnetic attenuation
The result: cell phone reception is poor or non-existent indoors—even when the signal strength indicator shows full bars outside.
In-house mobile communications as a professional solution
An in-house mobile phone signal solution specifically addresses this problem. The mobile phone signal is controlled as it enters the building and distributed evenly via an internal antenna and cable network.
The big advantage:
Users remain on their mobile provider's usual network, but benefit from stable voice and data quality—regardless of their location within the building.
Typical areas of application are:
- Office and administrative buildings
- Industrial and production sites
- Logistics and warehouses
- Hospitals and care facilities
- Public buildings and transportation infrastructure
Are you planning a new build or renovation, or are you already experiencing reception problems in your building?
Early assessment saves time, money, and subsequent retrofitting.
Find out here what a professional in-house mobile communications solution for your building could look like:
LTE and 5G: Powerful today, expandable tomorrow
Professionally planned in-house systems support both LTE (4G) and 5G frequencies. The key here is future-proof planning that takes into account subsequent expansions—such as increasing user numbers, new frequency bands, or additional building sections.
Services provided by FMB Engineering
FMB Engineering GmbH provides comprehensive support for in-house mobile communications projects:
- Analysis of existing radio coverage and/or building structure
- Planning according to network operator standards
- 3D wireless network simulations (e.g., with iBwave)
- Coordination and approval with mobile network operators
- Implementation, construction supervision, documentation, and quality assurance
As a neutral partner, we coordinate all parties involved—from builders and network operators to contractors.
Early planning pays off
Ideally , in-house mobile communications should be taken into account during the planning phase of new buildings or major renovations. Retrofitting solutions are often more complex, more expensive, and more limited in terms of technology.
Conclusion
Reliable mobile communications inside buildings are no longer just a convenience feature, but an integral part of modern technical infrastructure. With a professional in-house mobile communications solution, companies, municipalities, and operators can lay the foundation for secure communication, efficient processes, and future-proof applications.
Further details about our in-house mobile communications solutions can be found here: