What Are 802 Standards?

802 Standards are a family of IEEE networking specifications governing local area networks (LANs), metropolitan area networks (MANs), and personal area networks (PANs). Developed and maintained by the IEEE 802 LAN/MAN Standards Committee since 1980, the family covers wired Ethernet, Wi-Fi, Bluetooth-adjacent wireless PANs, and broadband wireless access under a common architectural framework. The 802 designation refers to the IEEE Standards Association project number, and each working group under the committee produces a numbered sub-standard: 802.3 for Ethernet, 802.11 for wireless LANs, 802.15 for wireless PANs, 802.16 for wireless MANs, and so on. Together, these standards define the Physical (PHY) and Medium Access Control (MAC) layers, giving upper-layer protocols a uniform interface regardless of whether traffic moves over copper, fiber, or radio.

The committee's structure reflects this diversity: each working group is responsible for a distinct link technology, but all groups share common conventions for addressing, frame delimitation, and management information bases (MIBs), which simplifies interoperability between wired and wireless network segments.

IEEE 802.3: Ethernet

IEEE 802.3, commonly known as Ethernet, is the wired foundation of the 802 family and the most widely deployed LAN technology in the world. The standard was first published in 1983 and has been revised continually to accommodate speeds from the original 10 Mbit/s through 100 Mbit/s (Fast Ethernet), 1 Gbit/s, 10 Gbit/s, and up to 400 Gbit/s in the IEEE 802.3-2022 consolidated standard. Each speed tier defines new PHY specifications while retaining the same MAC frame format, allowing higher-speed equipment to interoperate with existing network infrastructure at the data-link layer. Power over Ethernet (PoE), defined in the 802.3af, 802.3at, and 802.3bt amendments, extended Ethernet beyond data transport to supply electrical power to IP cameras, wireless access points, and VoIP phones over the same cable.

IEEE 802.11: Wireless LAN

IEEE 802.11, ratified in 1997, defines the PHY and MAC specifications for wireless local area networks (WLANs), commonly marketed as Wi-Fi. The working group has released successive amendments incrementally adding new radio access techniques: 802.11b and 802.11g operated at 2.4 GHz; 802.11a introduced 5 GHz operation using OFDM; 802.11n (Wi-Fi 4) added MIMO; 802.11ac (Wi-Fi 5) introduced wider channels and multi-user MIMO in the 5 GHz band; and 802.11ax (Wi-Fi 6, standardized in the IEEE 802.11-2020 revision) added OFDMA and target wake time to improve efficiency in dense deployments. Each amendment is periodically rolled into a consolidated revision of the base standard to maintain a single authoritative document.

IEEE 802.15: Wireless Personal Area Networks

IEEE 802.15 covers short-range wireless networking for personal area networks. The most widely deployed sub-standard, 802.15.1, provided the basis for Bluetooth. IEEE 802.15.4, first approved in 2003, targets low-rate, low-power PANs and defines the PHY and MAC layers used by ZigBee, Thread, and 6LoWPAN deployments. The 802.15.4 physical layer operates at data rates from 20 to 250 kbps in unlicensed sub-GHz and 2.4 GHz bands, with a 127-byte maximum frame size designed for sensor-class devices running on coin-cell batteries for months or years. The 802.15 working group has since expanded to cover ultra-wideband (802.15.4a), optical wireless communications, and millimeter wave links for short-range high-throughput applications.

Applications

802 Standards have applications across virtually every domain of networked technology, including:

• Enterprise and campus local area networking via 802.3 Ethernet
• Consumer and enterprise Wi-Fi access using 802.11 wireless LANs
• Industrial wireless sensor networks based on IEEE 802.15.4
• Smart home automation with ZigBee and Thread
• Broadband wireless access in metropolitan areas using 802.16
• Power delivery to networked devices via Power over Ethernet