IEEE 802.19 is the Wireless Coexistence Technical Advisory Group (TAG) within the IEEE 802 LAN/MAN Standards Committee.

Here’s a brief overview:

  1. Purpose: The main objective of IEEE 802.19 is to ensure the coexistence of wireless standards by developing mechanisms and methodologies for assessing and ensuring wireless coexistence.
  2. Role: The group provides guidance to other IEEE 802 wireless groups on coexistence issues. This is especially important as the number of wireless devices and the variety of wireless standards have grown, leading to potential interference issues.
  3. Tasks: One of the main tasks of the 802.19 TAG is to develop coexistence models, methodologies, and best practices. They also create technical reports on these subjects to guide other working groups.
  4. Collaboration: The TAG works closely with other IEEE 802 groups to ensure that new wireless standards are developed with coexistence in mind.
  5. Key Deliverable: A notable deliverable from this group is the IEEE 802.19.1 standard, which provides methods for enabling coexistence among dissimilar or independently operated wireless networks operating in close proximity.

In essence, while IEEE 802.19 does not define a specific technology, its role is vital in ensuring that different wireless technologies can operate side-by-side without significantly interfering with each other, making efficient use of the available spectrum.