When organisations experience wireless performance issues, one of the most common responses is to add more access points. While this may seem like a logical solution, simply increasing the number of access points does not automatically improve wireless performance. In fact, in some cases, adding more access points can make the situation worse.
Why The Assumption Exists
The thinking is often straightforward: if one access point provides coverage, then adding more access points should improve performance.
While additional access points may increase available capacity in certain environments, they also introduce additional RF complexity that must be carefully managed.
Wireless Networks Share Airtime
Unlike wired networks, wireless devices share access to a common medium. Every transmission occupies airtime and must compete with other nearby devices operating on the same or overlapping channels.
As additional access points are introduced, the RF environment becomes more crowded and channel planning becomes increasingly important.
The Risk Of Excessive Overlap
One issue frequently observed during wireless surveys is excessive overlap between neighbouring access points.
While some overlap is required to support roaming, too much overlap can increase contention and reduce overall efficiency.
Users may still see strong signal strength, but the network can become less efficient as access points compete for airtime.
Channel Planning Matters
Every access point requires access to radio channels.
As the number of access points increases, channel reuse becomes more challenging and poor channel planning can lead to increased interference and reduced performance.
This is particularly important in environments with high access point density or limited spectrum resources.
Access Point Quantity Is Only One Part Of The Design
Successful wireless networks depend on many factors, including access point placement, antenna selection, channel planning, transmit power levels and user requirements.
The objective is not simply to deploy more hardware, but to create an RF environment that supports the organisation's operational requirements.
When Additional Access Points Are Beneficial
There are many situations where adding access points is the correct solution, particularly when addressing capacity requirements or supporting high-density areas.
However, these decisions should be driven by survey data, design objectives and business requirements rather than assumptions alone.
Key Takeaway
More access points do not automatically result in better Wi-Fi. Effective wireless networks are built around thoughtful design, proper RF planning and a clear understanding of user requirements.
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WirelessMancer provides wireless design, capacity planning and survey services for organisations across the UK and Europe.
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