802.11 - Factbites

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Topic: 802.11

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	IEEE 802.11 - Wikipedia, the free encyclopedia
		The spectral mask for 802.11b requires that the signal be attenuated by at least 30 dB from its peak energy at ±11 MHz from the center frequency, and attenuated by at least 50 dB from its peak energy at ±22 MHz from the center frequency.
		Channels 10 and 11 are the only channels which work in all parts of the world, because Spain hasn't licensed channels 1 to 9 for 802.11b operation.
		Although the statement that channels 1, 6, and 11 are "non-overlapping" is incomplete, the 1, 6, 11 guideline has merit.
	en.wikipedia.org /wiki/IEEE_802.11 (2948 words)

	Dictionary and Encyclopedia - "Number Entries" Listings
		According to Paul Nikolich, chair of the IEEE 802 committee, "A test specification is particularly important for 802.11 given the complexity of the protocol and the challenges of wireless test.
		Consequently, situations arise such as the fact that 802.11b channels 1 through 11 are used in the United States, but 1 through 14 are in use in Japan.
		It wasn't until the introduction of the 802.11b standards (allowing data rates up to 11 Mbps) that Wi-Fi (as we know it) was really born.
	www.connect802.com /encyclopedia/enc-numbers.htm (3130 words)

	Introduction to IEEE 802.11 - Intelligraphics
		The 802.11 MAC layer is forced to handle station mobility in a fashion that is transparent to the upper layers of the 802 LAN stack.
		Another extension to the standard (802.11b) defines 11 Mbps and 5.5 Mbps data rates (in addition to the 1 and 2Mbps rates) utilizing an extension to DSSS called High Rate DSSS (HR/DSSS).
		For compatibility purposes, the 802.11 MAC must appear to the upper layers of the network as a ‘standard’ 802 LAN.
	www.intelligraphics.com /articles/80211_article.html (3114 words)

	802.11 wireless LAN Data rate
		Rather than using the Barker code, 802.11 wireless LAN uses CCK (Complementary Code Keying) to achieve 11 Mbps.
		Each bit is "encoded" by the 11 bit Barker code, and each group of 11 chips encodes one bit of data.
		Likewise, at 2 Mbps, 2 bits per symbol are modulated with QPSK, 11 Mchips per second, and thus have 22 MHz of spectrum.
	www.vocal.com /data_sheets/802.11_wireless_lan_rat.html (301 words)

	IEEE 802
		As mentioned in chapter 2.1.2 also the data rates of 8 Mbit/s and 11 Mbit/s with the DSSS are possible to achieve while using WLAN that supports the standard IEEE 802.11b [6, 12].
		The first phase standard was followed by an extension IEEE 802.11b, which supports data rates up to 11 Mbit/s with the radio frequency technology direct sequence spread spectrum.
		DSSS supports bigger data rates (up to 11 Mbit/s) and FHSS equipment are usually inexpensive compared to DSSS equipment.
	www.tml.tkk.fi /Opinnot/Tik-110.551/2000/papers/IEEE_802/wlan.html (7689 words)

	IEEE 802.11 - Wikipedia, the free encyclopedia
		The original version of the standard IEEE 802.11 released in 1997 specifies two raw data rates of 1 and 2 megabits per second (Mbit/s) to be transmitted via infrared (IR) signals or in the Industrial Scientific Medical frequency band at 2.4 GHz.
		According to the IEEE 802.11 Working Group Project Timelines, the 802.11n standard is not due for final approval until July 2007.
		The IEEE set up a dedicated task group to create a replacement security solution, 802.11i (previously this work was handled as part of a broader 802.11e effort to enhance the MAC layer).
	en.wikipedia.org /wiki/IEEE_802.11 (3696 words)

	IEEE 802 Standard
		This is the most recently approved standard and offers wireless transmission over relatively short distances at up to 54 megabits per second (Mbps) compared with the 11 megabits per second of the 802.11b standard.
		is available online at the Get IEEE 802 home page
		Bluetooth is a well-known and widely used specification that defines parameters for wireless communications among portable digital devices including notebook computers, peripherals, cellular telephones, beepers, and consumer electronic devices.
	www.ieee.org /portal/site/mainsite/menuitem.818c0c39e85ef176fb2275875bac26c8/index.jsp?&pName=corp_level1&path=about/802std&file=index.xml&xsl=generic.xsl (1191 words)

	LMSC, LAN/MAN Standards Committee (Project 802)
		In addition to the standards, there are occasional questions about the standards, to which the 802 Working Groups respond.
		The IEEE 802 LAN/MAN Standards Committee develops Local Area Network standards and Metropolitan Area Network standards.
		List of IEEE 802 Standards and ordering information
	grouper.ieee.org /groups/802 (250 words)

	Network Computing Workshop Infrastructure Anatomy of IEEE 802.11b Wireless Page 1 August 7, 2000
		Likewise, at 2 Mbps, you are modulating 2 bits per symbol with QPSK, 11 megachips per second, and thus have 22 MHz of spectrum.
		Each bit is "encoded" by the 11-bit Barker code, and each group of 11 chips encodes one bit of data.
		To achieve 11 Mbps, the vendors had to change the way they went about encoding the data.
	www.networkcomputing.com /1115/1115ws2.html (1121 words)

	O'Reilly Network: 802.11b Tips, Tricks, and Facts
		Approved in 1997 by the IEEE 802 committee, 802.11 details the framework necessary for a standard method of wireless networked communications.
		In September of 1999, the 802 committee extended the specification, deciding to standardize on DSSS.
		The top speed is 11 Mbps, but that's only over the air.
	www.oreillynet.com /pub/a/wireless/2001/03/02/802.11b_facts.html (1262 words)

	IEEE 802.11
		Introduced in 1999 802.11b is capable of transmissions of up to 11 Mbps and operates in the 2.4 GHz band.
		Also see: Cordless, IEEE 802 standards, Network definitions, Roam, WAP, WEP, Wi-Fi, Wardriving
		New standard expected to be completed in 2005 that is expected to support up to 100 Mbps.
	www.computerhope.com /jargon/num/80211.htm (175 words)

	802.11 Planet Conference & Expo, Santa Clara, CA - December 3 - 5, 2002
		802 is a registered trademark of the Institute of Electrical and Electronic Engineers, Inc. (IEEE).
	www.jupiterevents.com /80211/fall02 (202 words)

	Making IEEE 802.11 Networks Enterprise-Ready
		These security features can also be applied to other IEEE 802 networks to improve network-wide access security; for example, 802.3 Ethernet.
	www.microsoft.com /windows2000/techinfo/administration/security/wirelessec.asp (194 words)

	What is 802.11B
		However when devices move beyond the optimal range for 11 Mbps operation, or if substantial interference is present, 802.11b devices will transmit at lower speeds, falling back to 5.5, 2, and 1 Mbps.
		With 802.11b WLANs, mobile users can get Ethernet levels of performance, throughput, and availability.
		For example, if the network requirement is for high performance (5.5 Mbps or 11 Mbps) and complete coverage, long range at lower network speeds (1 Mbps and 2 Mbps) may make it difficult to employ a channel reuse pattern while maintaining high performance.
	www.pulsewan.com /data101/802_11_b_basics.htm (5298 words)

	IEEE 802.11 - Internet-ional Articles v. 1 no. 1
		The IEEE 802 group has an official Web site at www.ieee802.org, and IEEE 802.11 has an official Web site at www.ieee802.org/11/.
		Eleven to fourteen radio channels are available for use with IEEE 802.11b in the 2.4-GHz band, depending on the local legal and administrative restrictions.
		Direct Sequence Spread Spectrum (DSSS) is one of the modulation techniques provided for by the IEEE 802.11 and the one chosen by the 802.11 Working Group for the widely used IEEE 802.11b devices.
	www.isoc.org /pubs/int/cisco-1-1.html (4193 words)

	IEEE 802 Wireless World - Home
		Welcome to the 802 Wireless World information portal sponsored by the 802.11 and 802.15 Working Groups.
		This cookie stores nothing but a unique code to identify your browser to the 802 Wireless World server.
		This website may contain names, logos, designs, title, words, or phrases that may constitute trademarks, service marks, or tradenames of the IEEE or other entities which may be registered in certain jurisdictions.
	www.802wirelessworld.com (119 words)

	Introduction to IEEE 802.11 - Intelligraphics
		The 802.11 MAC layer is forced to handle station mobility in a fashion that is transparent to the upper layers of the 802 LAN stack.
		As IEEE 802.11 describes it, the distribution system is not necessarily a network nor does the standard place any restrictions on how the distribution system is implemented, only on the services it must provide.
		The 802.11 architecture is comprised of several components and services that interact to provide station mobility transparent to the higher layers of the network stack.
	www.intelligraphics.com /articles/80211_article.html (3114 words)

	Time-controlled communication and the 802.11 recommendation
		The IEEE 802 standards committee formed the 802.11 Wireless Local Area Networks Standards Working Group in 1990.
		The 802.11 working group took on the task of developing a global standard for radio equipment and networks operating in the 2.4GHz unlicensed frequency band for data rates of 1 and 2 Mbps.
		The access point routes data between the stations and other wireless stations or to and from the network server.
	www.swedetrack.com /ieee802.htm (2595 words)

	IEEE Standards Wireless Zone - Overview
		The IEEE 802.15 Working Group provides, in the IEEE 802 family, standards for low-complexity and low-power consumption wireless connectivity.
	standards.ieee.org /wireless/overview.html (449 words)

	InternetNews Realtime News for IT Managers
		[June 11, 2002] Despite all the debate over whether 802.11a or 802.11g will replace 802.11b, all three standards will learn to live together.
		The IEEE considers scrapping 802.11g standard after an Intersil-backed proposal again failed to muster the necessary support.
		11 have apparently taken their toll on the next-generation standard for Wireless Local Area Network (WLAN) chip sets.
	www.internetnews.com /index.php/4401 (2398 words)

	IEEE 802.11
		IEEE is the Institute for Electrical and Electronics Engineers, and the use of equipment based on the 802.11b standard is becoming a very inexpensive and popular way for computers to communicate over radio, especially over short distances such as within an office building.
		Because of the popularity of 802.11 equipment, the FCC is soliciting comments for future spectrum allocation for similar specifications, and the ARRL has formed a working group for the use of 802.11 specifications under Part 97 rules (with corresponding modifications such as the possible use of higher power).
		IEEE 802.11b RF transmission conforms to FCC Part 15 rules for unlicensed operation of low-power devices, so this topic is somewhat analogous to discussing the design and usage of cordless telephones.
	www.qsl.net /kk7dv/uarc/ieee802 (935 words)

	IEEE 802
		Relevant requirement for the IEEE 802.11 infrastucture network planning would be that the intelligence of the frequency planning should be in the equipment itself.
		Relevant requirement for the IEEE 802.11 infrastucture WLAN planning would be that the intelligence of the frequency planning should be in the equipment itself.
		The standardization process of IEEE 802.11 begun from the need to connect wirelessly to the wired Ethernet based data communications network and thus to offer mobility for the LAN users within a rather small area.
	www.tml.tkk.fi /Opinnot/Tik-110.551/2000/papers/IEEE_802/wlan.html (7689 words)

	IEEE 802 - Wikipedia, the free encyclopedia
		IEEE 802 refers to a family of IEEE standards about local area networks and metropolitan area networks.
		The IEEE 802 family of standards is maintained by the IEEE 802 LAN/MAN Standards Committee (LMSC).
		The services and protocols specified in IEEE 802 map to the lower two layers (Data Link and Physical) of the seven-layer OSI networking reference model.
	en.wikipedia.org /wiki/IEEE_802 (190 words)

	AusCERT - AA-2004.02 -- Denial of Service Vulnerability in IEEE 802.11 Wireless Devices
		IEEE 802.11 device transmissions are of low energy and short range, so the range of this attack is limited by the signal strength of the attacking device, which is typically low.
		Previously, attacks against the availability of IEEE 802.11 networks have required specialised hardware and relied on the ability to saturate the wireless frequency with high-power radiation, an avenue not open to discreet attack.
		Platform Wireless hardware devices that implement IEEE 802.11 using a DSSS physical layer.
	www.auscert.org.au /render.html?it=4091 (1007 words)

	IEEE 802
		Data Rates: 11, 22, 33, 44, and 55 Mbps.
		Designed to meet the demanding requirements of portable consumer imaging and multimedia applications.
	www.ieee802.org /15/pub/TG3.html (218 words)

	IEEE-SA GetIEEE 802.11 LAN/MAN Wireless LANS
		IEEE 802.11a-1999 (8802-11:1999/Amd 1:2000(E)), IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications—Amendment 1: High-speed Physical Layer in the 5 GHz band
		IEEE 802.11g-2003 IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications—Amendment 4: Further Higher-Speed Physical Layer Extension in the 2.4 GHz Band
		IEEE 802.11j-2004 IEEE Standard for Information technology—Telecommunications and information exchange between systems--Local and metropolitan area networks—Specific requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications—Amendment 7: 4.9 GHz–5 GHz Operation in Japan
	standards.ieee.org /getieee802/802.11.html (370 words)

	IEEE Approves 802.16 Specifications; Potential Competition for 802.11
		Some WLAN analysts feel that 802.16a may compete with 802.11.
		The new technology will operate in the 2 GHz to 11 GHz range.
		The IEEE Standards body recently approved a new set of specifications -- 802.16a for wireless metropolitan-area networks (WMANs).
	www.mobileinfo.com /News_2003/Issue05/IEEE_80216.htm (420 words)

	O'Reilly Network: Seven Security Problems of 802.11 Wireless
		Networks based on 802.11b have a bit rate of 11 Mbps, and networks based on the newer 802.11a technology have bit rates up to 54 Mbps.
		Authentication using a Web browser is a perfectly acceptable solution because it allows sessions to be identified and does not require specialized client software or a certain model of 802.11 network interface.
		This capacity is shared between all the users associated with an access point.
	www.oreillynet.com /pub/a/wireless/2002/05/24/wlan.html (1479 words)

	Palm Tungsten C 400mhz 64mb 802 11 Os 5 2 1 - Search Online
		Palm Tungsten C 400mhz 64mb 802 11 Os 5 2 1
		Read about palm tungsten c 400mhz 64mb 802 11 os 5 2 1 in the free online encyclopedia and dictionary.
		Search results for Palm Tungsten C 400mhz 64mb 802 11 Os 5 2 1 at Kanoodle.
	www.search-online.org /keyword/palm-tungsten-c-400mhz-64mb-802-11-os-5-2-1.html (264 words)

	[802SEC] mover/second for EC ballot on Press Release on approval of 802.
		Prev by Date: Re: [802SEC] mover/second for EC ballot on Press Release on approval of 802.11.2 (evaluation of 802.11 wless performance) project
		Next by thread: Re: [802SEC] mover/second for EC ballot on Press Release on approval of 802.11.2 (evaluation of 802.11 wless performance) project
		Regards, --Paul Nikolich ---------- This email is sent from the 802 Executive Committee email reflector.
	www.ieee802.org /secmail/msg05615.html (193 words)

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