802.11a-1999 defines a wireless LAN specification for the 5 GHz band, setting out the high speed physical layer and related MAC behavior for communication, networking, and broadcast technologies. As an English-language technical standard, it is used to identify the requirements behind a specific radio interface rather than a general networking concept. For buyers, engineers, and compliance teams, 802.11a-1999 helps establish a clear reference point for design, evaluation, and documentation.

What is 802.11a-1999?

802.11a-1999 is a Part 11 wireless medium access control and physical layer specification focused on a high speed PHY in the 5 GHz band. It describes how devices should organize wireless transmission at the radio layer, with attention to interoperability and technical consistency within the 802.11 family. In practice, this standard is relevant when a product or test plan needs a defined baseline for 5 GHz WLAN operation, signal behavior, and implementation requirements.

Where is 802.11a-1999 used?

This standard is typically used in wireless LAN equipment, network interface hardware, and engineering or compliance workflows that involve 5 GHz radio design. It may also support procurement and testing where a specific 802.11a-based implementation needs to be verified against a documented reference. Because 802.11a-1999 belongs to the communication and networking space, it is most useful in contexts where wireless connectivity, device interoperability, and physical layer performance need to be assessed with precision.

Why is 802.11a-1999 important?

802.11a-1999 matters because it gives teams a stable technical target for comparing designs, checking conformance, and reducing ambiguity in wireless product requirements. Using the standard can improve consistency across engineering, purchasing, and validation tasks, especially when a 5 GHz high speed WLAN interface must be identified clearly. It also helps limit risk by aligning expectations for performance and implementation against a recognized specification rather than informal assumptions.

• 5 GHz high speed WLAN PHY
• Part 11 MAC and PHY requirements
• Wireless LAN design reference
• Testing and conformance support
• Superseded standard status