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Home / Use Cases / Indoor Cellular & DAS / Calls drop in the hospital's interior and basement
Use case · Indoor Cellular & DAS

Reliable cell service throughout the hospital.

Dense construction, imaging suites, basements and new wings leave dead zones where clinicians, patients and visitors lose calls and texts. Indoor cellular closes the gaps.

TYPICAL SPACEHospitals and medical centers
WHAT HURTSDead zones by wing and floor
WHAT WE CHANGECoverage across care areas
Sound familiar?

What it looks like day to day.

A typical scenario based on the environments we work in, not a specific customer.

  • Staff lose calls and texts in certain wings or floors
  • Imaging areas and basements have no service
  • Visitors can't reach family from waiting areas
  • New additions don't match the old building's coverage
Dead zones in the core and basement compared with Care areas coveredBuilding section. Existing: outdoor macro signal reaches upper floors weakly; measured signal falls with each floor and there is no service below grade. Proposed: a donor antenna feeds a headend and riser that serve antennas on every floor, around -66 dBm throughout.AEXISTING CONDITIONSNTSGRADE ±0'MACROL4-88 dBmL3-94 dBmL2-101 dBmL1-108 dBmB1NO SVCB2NO SVCEXISTING · MEASURED RSRP BY FLOORGAPSBPROPOSED DESIGNNTSGRADE ±0'MACROL4-66 dBmL3-67 dBmL2-68 dBmL1-66 dBmB1-67 dBmB2-68 dBmHEDONORRISERPROPOSED · DAS · RSRP BY FLOORALL FLOORSA — Dead zones in the core andbasementB — Care areas covered
Sheet A shows existing conditions; sheet B shows the proposed design. Illustrative, not to scale.
Why it happens

Hospitals are built in a way that blocks signal.

Shielded rooms, thick walls and wings built decades apart create uneven coverage. Many clinical workflows still depend on regular carrier service, so gaps affect care, not just convenience.

What we do

How we fix it.

Indoor cellular (often called DAS) brings AT&T, Verizon and T-Mobile signal inside your building and spreads it where people are, so calls, texts and data just work.

  1. Walk the critical routes

    Care areas, corridors, basements and waiting rooms.

  2. Design around clinical areas

    Antenna placement planned with facilities and infection-control rules.

  3. Coordinate with carriers

    Approvals and signal source for each carrier.

  4. Install in phases

    Work around patient areas, and verify coverage when the project calls for it.

Designs start from your floor plans and each carrier's signal. We survey on site when the building calls for it.

What changes

What's different after.

Reachable clinicians

Calls and texts go through across the campus.

A better visitor experience

Families can stay in touch.

Consistent across wings

Old and new buildings covered alike.

Is it a fit?

Where this works, and where something else fits better.

We recommend what solves the problem, even when it's a different solution.

A good fit for

  • Hospitals and medical centers
  • Large outpatient clinics
  • Campuses adding new wings

Something else may fit better

For your IT or engineering team

Technical detail

The design decisions, the end-to-end path and how the result is tested.

Show

Coverage targets should follow workflows and occupancy while respecting areas where commercial cellular is restricted, unnecessary, or technically complex.

Design decisions

Design decisionWhat we need to understandHow we engineer it
Zone priorityMap care areas, public areas, offices, elevators, parking, and support spaces.Set carrier and performance targets by operational need.
System coexistenceInventory Wi-Fi, medical telemetry, public-safety radio, paging, and existing DAS.Coordinate spectrum, pathways, power, and responsibilities without conflating systems.
Deployment constraintsDocument infection control, access windows, shielding, infection-risk areas, and outage limits.Phase survey, installation, and commissioning around clinical operations.

The end-to-end path

  1. CARRIER INPUTParticipating mobile networksVoice, text, and data source
  2. DAS HEADENDCondition · combine · monitorManaged carrier integration
  3. HOSPITAL DISTRIBUTIONFiber · remotes · antennasCoverage through complex interiors
  4. USER SERVICEStaff · patient · visitorNative carrier experience

Commercial DAS, enterprise Wi-Fi, and public-safety radio may share coordination resources, but they are not interchangeable services.

How the result is tested

  • Carrier test Test every participating carrier and required band.
  • Route test Walk entrances, care zones, staff routes, elevators, basements, and parking.
  • Voice test Maintain calls through vertical and horizontal transitions.
  • Data test Verify messaging, authentication, uplink, and application reachability.
  • Coexistence test Confirm Wi-Fi, medical, commercial, and public-safety systems retain boundaries.
  • Operations test Verify alarm routing, escalation, maintenance access, and change records.
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Next Indoor cellular use case: Coverage depends on which floor you lease → · About Indoor Cellular & DAS →

Practical next step

Tell us where the phones stop working.

Share what's happening and where. We'll recommend the right fix and the next step, starting from your floor plans or site details.

Start your project