18 Wireless LAN fundamentals
This chapter covers
- The challenges of using air as a communication medium
- The characteristics of radio frequency
- Wireless LAN standards as defined by IEEE 802.11
- Connecting wireless devices using different kinds of service sets
It’s time to break our communications out of their wired constraints and explore a new medium for communication: air. Just as copper twisted-pair and glass fiber-optic cables provide a medium to transmit encoded messages using electricity and light, the air all around us (or, more precisely, the space around us that happens to be filled with air) provides an alternative medium to transmit messages using electromagnetic waves.
In this chapter and the three that follow it, we will cover various ...
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