Wireless Communication - Zigbee, Bluetooth - IIIT
Wireless Communication - Zigbee, Bluetooth - IIIT
Wireless Communication - Zigbee, Bluetooth - IIIT
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IEEE 802.15.4 MAC Layer<br />
Key MAC layer responsibilities are:<br />
Data framing: Data to be sent is encapsulated in MAC frame<br />
that is passed to RF transceiver<br />
Device addressing: Each device identified by 64-bit long MAC<br />
address<br />
Channel Sense Management (CSMA-CA): Device scans<br />
preconfigured channels and chooses one with least activity<br />
“listen before send” principle for managing access to single<br />
physical channel among multiple devices<br />
Device Association/Disassociation: Upon higher layer requests,<br />
MAC layer enters/leaves network
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