Chapter 2
802.11 Physical (PHY) Layer Frame Format
In this chapter, you will learn about the following:
- Physical Layer Operations
- Carrier Sense/Clear Channel Assessment(CS/CCA)
- Transmit (Tx)
- Receive (Rx)
- Physical Layer
- PLCP Service Data Unit
- PLCP Protocol Data Unit
- Physical Media Dependent
- PLCP Protocol Data Unit
- PLCP Preamble
- Long PPDU Preamble
- Short PPDU Preamble
- OFDM PLCP Preamble
- PLCP Header
- 802.11n PPDUs
- Non-HT Legacy PPDU
- HT Mixed PPDU
- HT Greenfield PPDU
- Data Field
- 2.4 GHz Communications
- 2.4 GHz Channels
- 5 GHz Communications
- UNII-1 (Lower Band)
- UNII-2 (Middle Band)
- UNII-2 Extended
- UNII-3 (Upper Band)
- 5 GHz Channels
- Adjacent, Nonadjacent, and Overlapping Channels
- Clause 14 FHSS PHY
- Hopping Sequence
- Dwell Time
- Hop Time
