Wireless Standards in Network Cards: 802.11ac vs. 802.11ax

Introduction

With the rapid advancements in wireless technology, network cards have become increasingly critical components in modern network solutions. Understanding the differences between wireless standards such as 802.11ac and 802.11ax is essential for network solution suppliers like Sageconnect Technology Group Co., Limited, which specializes in integrating computer network technology and system integration. This article delves into the nuances of these two standards, highlighting their features, capabilities, and implications for network performance.

Sageconnect Technology Group Co., Limited Overview

Sageconnect Technology Group Co., Limited is a leading professional network solution supplier based in the information technology industry. The company integrates research and development in computer network technology with system integration, providing users with a comprehensive range of technical services that encompass network platforms, system platforms, and application platforms. Sageconnect's expertise in wireless standards, including 802.11ac and 802.11ax, positions it as a forerunner in delivering cutting-edge network solutions.

802.11ac: The Fifth Generation of Wi-Fi

IEEE 802.11ac, commonly known as Wi-Fi 5, was introduced in 2013, marking a significant leap in wireless networking technology. It operates primarily in the 5 GHz frequency band, leveraging Orthogonal Frequency-Division Multiplexing (OFDM) to deliver speeds ranging from 100 Mbps to 400 Mbps, depending on the router, client devices, and environmental factors.

Key Features of 802.11ac

• Channel Width: Supports up to 160 MHz, enabling higher throughput.

• Single-Link Throughput: Can reach 500 Mbps or higher.

• Multi-Station WLAN Throughput: Capable of achieving 1 Gbps or more.

• Advanced Coding Techniques: Includes Low-Density Parity-Check (LDPC) and Space-Time Block Coding (STBC).

• Beamforming: Introduced standardized beamforming for improved signal directionality and range.

• Modulation: Supports up to 256-QAM for increased data efficiency.

802.11ax: The Sixth Generation of Wi-Fi

Introduced in late 2019, 802.11ax, or Wi-Fi 6, represents the latest evolution in wireless networking standards. It builds upon the foundations of 802.11ac, offering substantial improvements in terms of bandwidth, efficiency, and device capacity.

Key Features of 802.11ax

• Multi-User Performance: Utilizes Orthogonal Frequency-Division Multiple Access (OFDMA) to enable multiple devices with varying bandwidth requirements to connect and access the network simultaneously.

• Increased Bandwidth: Achieves a fourfold increase in throughput compared to 802.11ac.

• Dual-Band Support: Operates on both 2.4 GHz and 5 GHz bands, improving coverage and reliability.

• Efficiency Enhancements: Implements techniques like Target Wake Time (TWT) to reduce power consumption and extend device battery life.

• Higher Modulation Levels: Supports up to 1024-QAM for even greater data efficiency.

• Better Congestion Handling: Addresses network congestion by allowing multiple devices to share the same Wi-Fi channel simultaneously.

Comparison between 802.11ac and 802.11ax

| Feature | 802.11ac (Wi-Fi 5) | 802.11ax (Wi-Fi 6) |

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| Frequency Bands | 5 GHz | 2.4 GHz, 5 GHz |

| Channel Width | 20 MHz, 40 MHz, 80+80 MHz, 160 MHz | 20 MHz, 40 MHz, 80 MHz, 80+80 MHz, 160 MHz |

| FFT Size | 64, 128, 256, 512 | 256, 512, 1024, 2048 |

| Subcarrier Spacing | 312.5 kHz | 78.125 kHz |

| OFDM Symbol Duration| 3.2碌s + 0.8/0.4 碌s CP | 12.8