IEEE 802 is a family of Institute of Electrical and Electronics Engineers (IEEE) standards for local area networks (LAN), personal area network (PAN), and metropolitan area networks (MAN). The IEEE 802 LAN/MAN Standards Committee (LMSC) maintains these standards. The IEEE 802 family of standards has twelve members, numbered 802.1 through 802.12, with a focus group of the LMSC devoted to each.
MAC is the short form of Medium Access Control Layer. It is the layer-2 in OSI stack. It interfaces PHY layer and Upper layers (i.e. Network and above). WiMAX MAC Layer as per IEEE 802.16d standard. IEEE 802.11 Logical Architecture. A topology provides a means of explaining necessary physical components of a network, but the logical architecture defines the network's operation. As Figure 3.8 illustrates, the logical architecture of the 802.11 standard that applies to each station consists of a single MAC and one of multiple PHYs. Figure 3.8 A single 802.11 MAC layer supports three. The IEEE developed an international standard for WLANs. The 802.11 standard focuses on the bottom two layers of the OSI model, the physical layer (PHY) and data link layer (DLL). The objective of the IEEE 802.11 standard was to define a medium access control (MAC) sublayer, MAC management protocols and services, and three PHYs for wireless. IEEE 802.15.1: WPAN / Bluetooth. Task group one is based on Bluetooth technology. It defines physical layer (PHY) and Media Access Control (MAC) specification for wireless connectivity with fixed, portable and moving devices within or entering personal operating space. With each other. IEEE 802.15.4 is a standard that defines the physical and medium access control (MAC) layers of a low-rate wireless personal area network(LR-WPAN). While IEEE 802.15.4 defines just the physical and MAC layer of the network stack, there have been other efforts such as ZigBee and 6LoWPAN that define the upper layers of the.
The IEEE 802 standards are restricted to networks carrying variable-size packets, unlike cell relay networks, for example, in which data is transmitted in short, uniformly sized units called cells. Isochronous signal networks, in which data is transmitted as a steady stream of octets, or groups of octets, at regular time intervals, are also outside the scope of the IEEE 802 standards.
The number 802 has no significance: it was simply the next number in the sequence that the IEEE used for standards projects.[1]
The services and protocols specified in IEEE 802 map to the lower two layers (data link and physical) of the seven-layer Open Systems Interconnection (OSI) networking reference model. IEEE 802 divides the OSI data link layer into two sub-layers: logical link control (LLC) and medium access control (MAC), as follows:
- Data link layer
- LLC sublayer
- MAC sublayer
The most widely used of these standards are for the Ethernet family, token ring, wireless network protocols (including Wi-Fi), and bridging protocols.[citation needed]
Working groups[edit]
| Name | Description | Status |
|---|---|---|
| IEEE 802.1 | Higher Layer LAN Protocols Working Group | Active |
| IEEE 802.2 | LLC | Disbanded |
| IEEE 802.3 | Ethernet | Active |
| IEEE 802.4 | Token bus | Disbanded |
| IEEE 802.5 | Token ring MAC layer | Disbanded |
| IEEE 802.6 | MANs (DQDB) | Disbanded |
| IEEE 802.7 | Broadband LAN using Coaxial Cable | Disbanded |
| IEEE 802.8 | Fiber Optic TAG | Disbanded |
| IEEE 802.9 | Integrated Services LAN (ISLAN or isoEthernet) | Disbanded |
| IEEE 802.10 | Interoperable LAN Security | Disbanded |
| IEEE 802.11 | Wireless LAN (WLAN) & Mesh (Wi-Fi certification) | Active |
| IEEE 802.12 | 100BaseVG | Disbanded |
| IEEE 802.13 | Unused[2] | reserved for Fast Ethernet development[3] |
| IEEE 802.14 | Cable modems | Disbanded |
| IEEE 802.15 | Wireless PAN | Active |
| IEEE 802.15.1 | Bluetooth certification | Disbanded |
| IEEE 802.15.2 | IEEE 802.15 and IEEE 802.11 coexistence | Hibernating[4] |
| IEEE 802.15.3 | High-Rate wireless PAN (e.g., UWB, etc.) | ? |
| IEEE 802.15.4 | Low-Rate wireless PAN (e.g., ZigBee, WirelessHART, MiWi, etc.) | Active |
| IEEE 802.15.5 | Mesh networking for WPAN | ? |
| IEEE 802.15.6 | Body area network | Active |
| IEEE 802.15.7 | Visible light communications | ? |
| IEEE 802.16 | Broadband Wireless Access (WiMAX certification) | hibernating |
| IEEE 802.16.1 | Local Multipoint Distribution Service | hibernating |
| IEEE 802.16.2 | Coexistence wireless access | hibernating |
| IEEE 802.17 | Resilient packet ring | Disbanded |
| IEEE 802.18 | Radio Regulatory TAG | ? |
| IEEE 802.19 | Wireless Coexistence Working Group | ? |
| IEEE 802.20 | Mobile Broadband Wireless Access | Disbanded |
| IEEE 802.21 | Media Independent Handoff | hibernating |
| IEEE 802.22 | Wireless Regional Area Network | hibernating |
| IEEE 802.23 | Emergency Services Working Group | Disbanded |
| IEEE 802.24 | Vertical Applications TAG | ? |
See also[edit]
References[edit]
- IEEE Std 802-1990: IEEE standards for Local and Metropolitan Networks: Overview and Architecture New York:1990
- ^Institute of Electrical and Electronics Engineers (September 2004). 'Overview and Guide to the IEEE 802 LMSC'(PDF). Retrieved October 13, 2020.
- ^'802.3'. Data Communincation Standards and Protocols. EE Herald. Retrieved 2012-01-25.
- ^'The fate of 100 Mbps Ethernet now definitely two-fold'. FDDI News. Boston: Information Gatekeepers, Inc. 4 (7): 1–2. July 1993. ISSN1051-1903. Retrieved 2013-11-21.
- ^'IEEE 802.15 WPAN Task Group 2 (TG2)'. official web site. IEEE Standards Association. May 12, 2004. Retrieved June 30, 2011.
External links[edit]
- IEEE 802 Standards available via IEEE Get Program
IEEE 802.15 is a working group of the Institute of Electrical and Electronics Engineers (IEEE) IEEE 802 standards committee which specifies wireless personal area network (WPAN) standards. There are 10 major areas of development, not all of which are active.
The number of Task Groups in IEEE 802.15 varies based on the number of active projects. The current list of active projects can be found on the IEEE 802.15 web site.
IEEE 802.15.1: WPAN / Bluetooth[edit]
Task group one is based on Bluetooth technology. It defines physical layer (PHY) and Media Access Control (MAC) specification for wireless connectivity with fixed, portable and moving devices within or entering personal operating space. Standards were issued in 2002 and 2005.[1][2]
IEEE 802.15.2: Coexistence[edit]
Task group two addresses the coexistence of wireless personal area networks (WPAN) with other wireless devices operating in unlicensed frequency bands such as wireless local area networks (WLAN). The IEEE 802.15.2-2003 standard was published in 2003[3] and task group two went into 'hibernation'.[4]
IEEE 802.15.3: High Rate WPAN[edit]
IEEE 802.15.3-2003[edit]
IEEE 802.15.3-2003 is a MAC and PHY standard for high-rate (11 to 55 Mbit/s) WPANs. The standard can be downloaded via the IEEE Get program,[5] which is funded by IEEE 802 volunteers.
IEEE 802.15.3a[edit]
IEEE P802.15.3a was an attempt to provide a higher speed Ultra wideband PHY enhancement amendment to IEEE 802.15.3 for applications which involve imaging and multimedia. The members of the task group were not able to come to an agreement choosing between two technology proposals, Multi-band Orthogonal Frequency Division Multiplexing (MB-OFDM) and Direct Sequence UWB (DS-UWB), backed by two different industry alliances and was withdrawn in January 2006.[6] Documents related to the development of IEEE 802.15.3a are archived on the IEEE document server.[7]
IEEE 802.15.3b-2006[edit]
IEEE 802.15.3b-2005 amendment was released on May 5, 2006. It enhanced 802.15.3 to improve implementation and interoperability of the MAC. This amendment include many optimizations, corrected errors, clarified ambiguities, and added editorial clarifications while preserving backward compatibility. Among other changes, the amendment defined the following new features:[8]
- a new MAC layer management entity (MLME) service access point (SAP)
- implied acknowledgment policy that allow polling
- logical link control/subnetwork access protocol (LLC/SNAP) headers
- multicast address assignment
- multiple contention periods in a superfame
- a method for relinquishing channel time to another device in the PAN
- faster network recover in the case when the piconet coordinator (PNC) abruptly disconnects
- a method for a device to return information about signal quality of a received packet.
IEEE 802.15.3c-2009[edit]
IEEE 802.15.3c-2009 was published on September 11, 2009. The task group TG3c developed a millimeter-wave-based alternative physical layer (PHY) for the existing 802.15.3 Wireless Personal Area Network (WPAN) Standard 802.15.3-2003. The IEEE 802.15.3 Task Group 3c (TG3c) was formed in March 2005. This mmWave WPAN is defined to operate in the 57–66 GHz range. Depending on the geographical region, anywhere from 2 to 9 GHz of bandwidth is available (for example, 57–64 GHz is available as unlicensed band defined by FCC 47 CFR 15.255 in North America). The millimeter-wave WPAN allows very high data rate, short range (10 m) for applications including high speed internet access, streaming content download (video on demand, HDTV, home theater, etc.), real time streaming and wireless data bus for cable replacement. A total of three PHY modes were defined in the standard:[9]
- Single carrier (SC) mode (up to 5.3 Gbit/s)
- High speed interface (HSI) mode (single carrier, up to 5 Gbit/s)
- Audio/visual (AV) mode (OFDM, up to 3.8 Gbit/s).
IEEE 802.15.4: Low Rate WPAN[edit]
Ieee Standards List Pdf
IEEE 802.15.4-2003 (Low Rate WPAN) deals with low data rate but very long battery life (months or even years) and very low complexity. The standard defines both the physical (Layer 1) and. IEEE Standards Association. doi:10.1109/IEEESTD.2005.96290. ISBN0-7381-4707-9. Retrieved June 30, 2011.
Ieee Standard For Mac Layer Protocols
External links[edit]
Ieee Mac Lookup