The problem
Wireless infrastructure accumulates on rooftops and in risers with fragmented ownership: carrier macro equipment, neutral-host DAS, tenant repeaters, and public safety systems, installed by different parties, in different decades, under different (or no) agreements. Nobody holds the complete picture.
The risk
Ungoverned wireless infrastructure creates stacked risks: RF interference between systems, structural and waterproofing damage from rooftop work, safety exposure around transmitting antennas, lease and license revenue leakage, and, most seriously, degradation of public safety coverage when commercial work disturbs shared pathways or ERRCS components.
Understanding it
In-building wireless is now baseline tenant expectation, and it depends on physical infrastructure that needs the same governance as any riser: documented ownership, controlled access, managed change, and enforced agreements.
DAS head-ends, remote units, and coax/fiber distribution share pathways with everything else in the building. Rooftop work happens near live transmitters and penetrates the building envelope. And where DAS or BDA systems carry public safety frequencies, changes can affect first responder communications, which makes change control a life safety function, not just an operational one.
Best practices
- Maintain a complete wireless inventory: every antenna, amplifier, head-end, and pathway, with ownership.
- Require RF and structural review for rooftop and DAS changes before approval.
- Enforce access agreements and insurance for every wireless occupant.
- Separate and clearly label public safety system components; control changes near them tightly.
- Coordinate carrier upgrades (new spectrum, equipment swaps) as formal change projects.
How GDS delivers it
- Wireless and rooftop infrastructure inventory and documentation
- Change management for DAS, rooftop, and in-building wireless work
- Vendor and carrier access governance for wireless spaces
- Agreement and license compliance for wireless occupants
- Coordination of coverage assessments and neutral-host DAS projects
Common questions
Does GDS design or install DAS?
GDS governs the infrastructure and coordinates the ecosystem, integrators, carriers, engineers, and AHJs. For design and installation, GDS coordinates qualified DAS integrators while protecting the building's interests and standards.
Our cellular coverage is poor. Where do we start?
With an assessment: document existing systems, measure coverage, and identify whether the answer is carrier engagement, a repeater, or neutral-host DAS. Buildings that approach carriers with documentation get taken more seriously.