Chapter 9MAC Layer of WiMAX

Chapter 8 described theWiMAX physical (PHY) layer, also referred to as layer 1 of the open systems interconnect (OSI) stack. In a network, the purpose of the PHY layer is to reliably deliver information bits from the transmitter to the receiver, using the physical medium, such as radio frequency, light waves, or copper wires. Usually, the PHY layer is not informed of quality of service (QoS) requirements and is not aware of the nature of the application, such as VoIP, HTTP, or FTP. The PHY layer can be viewed as a pipe responsible for information exchange over a single link between a transmitter and a receiver. The Media Access Control (MAC) layer, which resides above the PHY layer, is responsible for controlling and ...

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