CellSpanSIGNAL BOOSTER
Application Scenarios

In-Building Cellular Coverage

Design-led indoor coverage for offices, hotels, warehouses and public buildings.

Site-specific configurationOEM / ODMInstallation supportRequest a SolutionRecommended Signal Booster Solutions
In-building cellular coverage in an office building

Application Overview

In-building cellular coverage is the result of three variables: the outdoor macro signal, the building penetration loss and the system gain. We measure the outdoor level, review the building materials and layout, then specify a booster or passive DAS configuration with the antenna count and cable route. Projects that need a design before equipment selection start with a site survey, a zone plan and a confirmed target level.

Usable outdoor signal but weak indoor level
Low-E glass, concrete and metal cladding
Multi-floor buildings with uneven coverage
No clear target level or acceptance criteria
In-building cellular coverage in an office building

Typical Installation Layout

A typical installation uses an outdoor donor antenna, a booster or fiber repeater, a distribution network and indoor service antennas.

  1. 1

    Record outdoor RSRP/SINR around the building and indoor levels in representative rooms.

  2. 2

    Map floors, walls and user density; define target levels and zones.

  3. 3

    Select host, antennas and cable; install and verify each zone against the target.

Installation notes

  • As a rule of thumb, -85 dBm is good, -100 dBm is the voice limit and below -110 dBm is effectively a dead zone; confirm on site.
  • Do not promise uniform coverage before reviewing the floor plan and wall materials.
  • Confirm the target bands and operator requirements before ordering.
Typical signal coverage system diagram

Request a Solution

Share your floor plan, coverage area and target bands. Our engineering team will propose a practical configuration.

  • sale@cellphonenetworkbooster.com
  • Mon – Fri, 9:00 – 18:00 (GMT+8)

Helpful with your enquiry

  • Floor plan or site photos
  • Area, floors and ceiling height
  • Target bands and operators

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Frequently Asked Questions

What indoor signal level is usable?

For voice, about -100 dBm is the lower limit; -85 dBm or better is comfortable. For data, SINR and band width matter as much as RSRP. Record both RSRP and SINR during the survey.

Can one booster cover a multi-floor office?

Often yes, but the antenna count and splitter design matter more than the host alone. A single host with several service antennas can cover multiple floors if the cable routes and isolation allow it.

Do you design for a specific target level?

Yes. Provide the target level and the critical areas (lobby, meeting rooms, warehouse aisles, guest rooms). We will design the antenna layout and confirm the expected performance after a site survey.