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Wireless LANs (Bluetooth (Radio Layer (Band (2.4 GHz ISM band divided into…

- - - - Small Net
      - Up to eight stations
      - Comm between primary and secondary
        
        One to many
        
        One to one
    - - Piconet can be combined to form scatternet
      - A secondary station in one piconet can be the primary in another piconet
      - The stations can receive message from primary in the first piconet as secondaries and acting as primary to the second piconrt
  - - - 2.4 GHz ISM band divided into 79 channel in 1MHz each
    - - Use freq hoping spread spectrum method in the physical layer to avoid interference from other devices or networks
    - - GFSK (FSK with Gaussian bandwith filtering) to transfer bits to signal
  - - - Multiplexing
      - Segmentation and reassemblt
      - Quality of service
      - Group managemenr