802.11ax Physical Rates ========================= .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What is the range of physical data rates supported by IEEE 802.11ax?** 802.11ax supports data rates from as low as 0.3 Mbps up to 9.6 Gbps depending on channel width and MCS. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What modulation schemes are used in 802.11ax physical rates?** Uses OFDMA with modulation types including BPSK, QPSK, 16-QAM, 64-QAM, 256-QAM, and optional 1024-QAM. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does channel bandwidth affect physical rates in 802.11ax?** Wider channels (20, 40, 80, 160 MHz) allow more data to be transmitted simultaneously, increasing max rates. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What is MCS in the context of 802.11ax physical rates?** Modulation and Coding Scheme defines combinations of modulation type and error correction rate affecting throughput. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does 802.11ax support multi-user transmissions?** Yes, physical rates reflect multi-user OFDMA and MU-MIMO capabilities for simultaneous transmissions. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What is the highest modulation order in 802.11ax?** 1024-QAM (Quadrature Amplitude Modulation), allowing higher data rates than previous standards. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does 1024-QAM improve data rates?** It encodes more bits per symbol (10 bits vs 8 bits for 256-QAM), boosting throughput in good signal conditions. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What role do spatial streams play in physical rates?** Multiple spatial streams allow parallel data transmission via MU-MIMO, multiplying throughput. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How many spatial streams does 802.11ax support?** Up to 8 spatial streams for both uplink and downlink. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does OFDMA affect physical rates?** OFDMA divides channels into smaller Resource Units, allowing efficient simultaneous transmissions to multiple users. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Can physical rates adapt dynamically in 802.11ax?** Yes, rate adaptation algorithms select MCS and resource allocation based on real-time channel conditions. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What channel widths does 802.11ax support?** 20 MHz, 40 MHz, 80 MHz, 160 MHz, and optionally 80+80 MHz non-contiguous bonding. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does 160 MHz channel width influence physical rates?** It doubles the throughput compared to 80 MHz channels, reaching peak data rates near 9.6 Gbps. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does 802.11ax physical rate support uplink multi-user?** Yes, uplink OFDMA and MU-MIMO improve network efficiency by allowing multiple clients to transmit simultaneously. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What is the minimum physical rate in 802.11ax?** Around 0.3 Mbps using BPSK with a low coding rate, suitable for weak signal conditions. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does 802.11ax handle interference affecting rates?** Uses spatial reuse and enhanced coding to maintain reliable connections at higher rates despite interference. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Are physical rates backward compatible in 802.11ax?** Yes, it supports legacy rates for interoperability with older Wi-Fi devices. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Where can I find detailed 802.11ax physical rates tables?** In the IEEE 802.11ax standard documentation and Wi-Fi Alliance technical resources. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow Topics in this section, * :ref:`Learnings in this section ` * :ref:`Terminology ` * :ref:`Version Info ` * :ref:`physical_rates Basic Setup on Ubuntu using IPv4 ` * :ref:`Reference links ` .. _physical_rates_step1: .. tab-set:: .. tab-item:: Learnings in this section * In this section, you are going to learn .. _physical_rates_step2: .. tab-set:: .. tab-item:: Terminology * Terminology .. _physical_rates_step3: .. tab-set:: .. tab-item:: Version Info * Version Info .. _physical_rates_step18: .. tab-set:: .. tab-item:: physical_rates Basic Setup on Ubuntu using IPv4 * setup .. _physical_rates_step17: .. tab-set:: .. tab-item:: Reference links * Reference links