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Difficulty: EasyWireless Network Deployment and Standards

A network administrator is deploying three neighboring wireless access points within an office floor plan operating on the 2.4 GHz frequency band. To minimize co-channel and adjacent-channel interference, which set of channels should be assigned to these access points?

  1. Channels 1, 6, and 11Answer
  2. B
    Channels 1, 2, and 3
  3. C
    Channels 2, 4, and 6
  4. D
    Channels 1, 5, and 9

Answer

Channels 1, 6, and 11
In 2.4 GHz wireless networks, channels 1, 6, and 11 are the three standard non-overlapping channels. Because each channel requires 20 MHz of bandwidth and channel centers are spaced 5 MHz apart, a separation of 5 channel numbers (25 MHz center-to-center spacing) is required to eliminate adjacent-channel interference.

Step-by-Step Solution

1
Identify the operating band and channel bandwidth
The network operates on the 2.4 GHz band where 20 MHz wide channels are spaced 5 MHz apart.
Understanding the channel spacing of 2.4 GHz is necessary to calculate channel overlap.
2
Select non-overlapping channels
Channels 1, 6, and 11 have 25 MHz separation between their center frequencies, ensuring zero channel overlap.
Using non-overlapping channels prevents adjacent-channel interference across neighboring coverage cells.

Key Concept

2.4 GHz Non-Overlapping Channels
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Topics

Wireless Network Deployment and Standards

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