06 Apr

Challenge is the density

Use of mobile computing devices such as laptops, tablets, and Wi-Fi enabled phones is increasing in the workplace. As the usage of WiFi 802.11 wireless networks (WLANs) grows, network performance is becoming a significant concern. Access point venders use chipsets from that comply with standards. The number of concurrent connections an access point can support is dictated by the standards. Limited are generally 125 associations per radio.

The challenge is the density of mobile computing devices wanting to use the WLAN. Designing for this growing demand WLANs using a dense deployment of access points (APs) has serious limitations. In sharp contrast with wired networks, one cannot increase the capacity of a WLAN by simply deploying more equipment (APs).

To increase capacity, the APs must be assigned appropriate channels and the clients must make intelligent decisions about which AP to associate with. With a limited number of channels, deploying more AP’s causes over use of the limited channels and contention / self-interference between (AP’s) for the limited spectrum. More on that at a later date.

Decisions about channel assignment, and associations must be based on a global view of the entire WLAN, rather than the local viewpoint of an individual client or AP. Given the diversity of Wi-Fi devices in use today, another constraint on the design of dense networks is that it must not require any modification to Wi-Fi clients. In this blog, we show how the design a WiFi system that addresses these challenges, and provides significant improvements in performance over existing WLANs.

If you are considering deploying a Wireless LAN be sure to work with a professional installer who can model and design your network ensuring the right balance of AP’s to meet your coverage needs.

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