5. 802.11ah protocol performance

HaLow Wi-Fi protocol transmissions can be characterized and modeled by taking into account encoding, encapsulation and media access processes. 802.11ah equipment continuously adapts its transmission parameters to the quality of the communication channel. To do this, it measures the received power level, the signal-to-noise ratio and the Packet Error Rate (PER). These measurements are indexed to a combination of parameters, selected from ten MCS, two guard intervals, five bandwidths and a maximum of four space-time streams.

The standard does not define precise selection rules for transmission parameters. Implementation is left up to the manufacturer.

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802.11ah protocol performance

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Fields of application

Bibliography

(1) - PERAHIA (E.), STACEY (R.) - Next Generation Wireless LANs : 802.11n and 802.11ac. - Cambridge University Press (2013).
(2) - SANKARAN (S.), GULASEKARAN (S.) - Wi-Fi 6 : Protocol and Network. - Artech House mobile communications...

Standards and norms

IEEE standard for information technology-telecommunications and information exchange between systems – local and metropolitan area networks-specific requirements – part 11: Wireless lan medium access control (mac) and physical layer (phy) specifications amendment 2: Sub 1 ghz license exempt operation. IEEE Std 802.11ah-2016 (Amendment to IEEE Std 802.11-2016, as amended by IEEE Std 802.11ai-2016), pp. 1-594 (2017)....