WLAN Performance Factors

In this first lecture of our new section, we will discuss WLAN performance factors. Understanding these factors is crucial for delivering effective wireless solutions. Let’s explore what contributes to good WLAN performance.

1. Coverage

Coverage is the first and foremost factor to consider. If there is no coverage, there is no signal, which translates to no service. When deploying or designing a wireless network, it’s essential to assess the coverage area. The areas where coverage is provided are the ones where the signal is available, ensuring service continuity.

Factors Affecting Coverage

Several key factors influence coverage:

Radiation Patterns: The distribution of the signal emitted by the access points (APs).
Output Power: Higher output power can enhance coverage, but this must be balanced with interference and regulatory limits.
Radiofrequency Behaviors: Consider phenomena like reflection, refraction, distortion, and absorption. For instance, certain materials, such as metal or drywall, can absorb signals, reducing coverage.

When designing the WLAN, conduct a site survey to identify physical barriers and materials that could impact coverage. Ensure that the WLAN design meets the minimum signal requirements in all locations within the coverage area. For example, simply saying that coverage is available in certain spots may not suffice for customer satisfaction. Coverage should be consistent throughout the area being served.

Challenges in Coverage Design

Designing coverage for different environments poses unique challenges. A studio apartment may be straightforward, but a hotel with numerous rooms, halls, and elevators requires a more comprehensive approach. The density of users also impacts design considerations.