As a domain expert in wireless communication, I'm pleased to provide an in-depth explanation of the Wireless 802.11 D standard. The IEEE 802.11 D amendment is a critical component of the 802.11 Wireless LAN family of standards. It was indeed approved in 2001, and its primary purpose is to address regulatory requirements for wireless communication devices. This amendment is particularly important because it ensures that wireless devices can operate within the legal parameters set by different regulatory domains around the world.

The 802.11 D amendment is designed to work in conjunction with the 802.11 h amendment, which includes dynamic frequency selection (DFS) and transmit power control (TPC). Together, these amendments help wireless devices to automatically adjust their operation to comply with local regulations, which can vary significantly from one country to another. This is particularly important for wireless devices operating in the 5 GHz band, where regulations are more stringent due to the potential for interference with radar systems.

One of the key features of the 802.11 D amendment is the ability for wireless devices to scan for and recognize beacon frames from access points (APs). These beacon frames contain information about the regulatory domain in which the AP is operating. By recognizing this information, the wireless device can configure itself to operate within the same regulatory domain, ensuring that it does not cause interference with other devices or violate any local regulations.

Another important aspect of the 802.11 D amendment is the support for spectrum management. This includes the ability for wireless devices to detect and avoid interference with radar systems, as well as to switch to different channels if necessary. This is crucial for maintaining the integrity of wireless communication and ensuring that all devices can operate without causing undue disruption.

The implementation of the 802.11 D amendment also requires wireless devices to have a certain level of intelligence. They must be able to interpret the regulatory information provided by the AP and apply it to their own operation. This includes adjusting their transmit power, selecting the appropriate channel, and even switching to different modes of operation if required.

In summary, the Wireless 802.11 D amendment is a vital part of the 802.11 Wireless LAN standards that ensures wireless devices can operate within the legal and regulatory frameworks of different countries. It provides a means for devices to automatically configure themselves to the local regulatory domain, thereby facilitating seamless and compliant wireless communication across the globe.

read more >>

IEEE 802.11d is an amendment approved in 2001 to the 802.11 Wireless LAN specifications, which allows clients to automatically configure themselves to their local regulatory domain.Feb 13, 2014read more >>