Wireless Surveys

Planning a wireless network is not just about coverage its also about capacity, we take time to understand your requirements, undertake a comprehensive survey and will design a wireless network to suit both the space to be covered and your budget.

Every building is different, thats why our highly experienced survey team will spend time understanding both it and the “background noise”, this enables us to create a location plan detailing access point positions and coverage throughout the building.

Our wireless surveys include a full report detailing cabling requirements and links to the existing wired network.

southdown inf hmDensity Map

Spectrum Analysis Overview

Most wireless networks and devices today use radio frequency (RF) technology to transmit data and certain types of devices use different sections or “bands” for transmission. Wi-Fi equipment has been allocated by international governing bodies to use certain unlicensed sections of the RF spectrum – specifically at 2.4 and at 5 GHz – for its operation. Being unlicensed, these bands are shared between many, many different kinds of devices and are the only section of spectrum where they are legally allowed to transmit RF signals. In environments like offices, warehouses or high-tech residences, where several wireless devices vie for the same spectrum space to communicate, interference can occur and networks become slow, drop connection or crash.

Why spectrum analysis?

Since RF signals are invisible to the naked eye, a spectrum analyzer is necessary to see into the wireless landscape to observe what is transmitting and where in the spectrum the “noise” is occurring. Sometimes the solution is to change the channel of the Wi-Fi network to avoid the other signals, and sometimes eliminating the offending wireless devices that “don’t play well with others” is the answer. Occasionally, in situations where interference cannot be avoided or eliminated, the only solution is to switch Wi-Fi bands completely. Without spectrum analysis, implementing the proper solution is an expensive and time-consuming game of trial and error.

2.4 GHz Overview

The 2.4 GHz band contains eleven channels (and up to 13 or 14 in Europe and Japan, respectively), but only channels 1, 6, and 11 do not overlap. The 2.4 GHz band offers the widest compatibility with Wi-Fi devices through 802.11b/g/n, but with only three channels to chose from, the 2.4 GHz band is often very limited in the amount of traffic that it can sustain. While the 2.4 GHz band offers good range, it also suffers from non-Wi-Fi interference caused by electronic devices like cordless phones, security systems, microwave ovens, wireless audio-visual systems, Bluetooth devices, and more.

5 GHz Overview

The 5 GHz band contains 24 non-overlapping channels, which gives it a significant advantage over the 2.4 GHz band’s three non-overlapping channels. With more channels to choose from, interference avoidance is as simple as choosing an unused channel. Additionally, fewer electronic devices use 5 GHz, meaning Wi-Fi access points operating in this frequency range have fewer RF signals to compete with. Although the 5 GHz band is relatively quiet and has many more available channels, it is widely believed to be only a matter of time before this band is as congested as the 2.4 GHz band.