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802.11 Wireless Standards - CompTIA Network+ N10-006 - 5.3
802.11 Wireless Standards - CompTIA Network+ N10-006 - 5.3
Published: 2015/05/14
Channel: Professor Messer
wireless lans 802.11a,b,g,n
wireless lans 802.11a,b,g,n
Published: 2017/07/28
Channel: tech dude
[Hindi/Urdu] WiFi Explained in Detail | Wifi 802.11 a, b, g, n, ac
[Hindi/Urdu] WiFi Explained in Detail | Wifi 802.11 a, b, g, n, ac
Published: 2016/01/04
Channel: Technical Guruji
CSE 574-14-06A: Wireless LANs Part II: IEEE 802.11a/b/g/n/ac (Part 1 of 2)
CSE 574-14-06A: Wireless LANs Part II: IEEE 802.11a/b/g/n/ac (Part 1 of 2)
Published: 2014/06/05
Channel: Raj Jain
The sound of 802.11b
The sound of 802.11b
Published: 2012/08/01
Channel: invalidsyscall
Meeka was dreaming about 802.11b connections.
Meeka was dreaming about 802.11b connections.
Published: 2015/05/20
Channel: CopperWiFi.com
What is the maximum speed of 802.11 b
What is the maximum speed of 802.11 b
Published: 2018/08/20
Channel: moibrad9 moibrad9
What is the 802.11 b standard
What is the 802.11 b standard
Published: 2018/08/26
Channel: wikiaudio14
IEEE 802.11 b/ g/ n 150Mbps USB Wireless WiFi Adapter
IEEE 802.11 b/ g/ n 150Mbps USB Wireless WiFi Adapter
Published: 2013/07/30
Channel: yura mersoff
How fast is 802.11 b
How fast is 802.11 b
Published: 2018/08/11
Channel: atunakai5a
Socket SD 802.11b Wireless Adapter
Socket SD 802.11b Wireless Adapter
Published: 2011/06/10
Channel: JesusGeekPodcast
CSE574-16-06A: Wireless LANs Part II: 802.11a/b/g/n/ac (Part 1 of 3)
CSE574-16-06A: Wireless LANs Part II: 802.11a/b/g/n/ac (Part 1 of 3)
Published: 2016/10/04
Channel: Raj Jain
Which radio frequency band does the 802.11 b standard use
Which radio frequency band does the 802.11 b standard use
Published: 2018/08/12
Channel: atunakai3 atunakai3
802.11 b/g/n_Roaming
802.11 b/g/n_Roaming
Published: 2012/03/28
Channel: Rohit Sijoria
H2K2 (2002): Fun With 802.11b
H2K2 (2002): Fun With 802.11b
Published: 2012/09/12
Channel: Channel2600
WiFi Adapter IEEE 802.11 b/ g/ n 150Mbps USB 2.0 CNP-66084
WiFi Adapter IEEE 802.11 b/ g/ n 150Mbps USB 2.0 CNP-66084
Published: 2013/01/22
Channel: Olaf666
ebay sales video, item #3  Micronet SP906GK 802.11 B/G wireless card
ebay sales video, item #3 Micronet SP906GK 802.11 B/G wireless card
Published: 2010/05/20
Channel: viperfrank
AWUS036NHR Alfa 802.11b/g/n WiFi Long Range USB Adapter
AWUS036NHR Alfa 802.11b/g/n WiFi Long Range USB Adapter
Published: 2013/11/26
Channel: SimpleWiFi
CSE 574-14-06B: Wireless LANs Part II: IEEE 802.11a/b/g/n/ac (Part 2 of 2)
CSE 574-14-06B: Wireless LANs Part II: IEEE 802.11a/b/g/n/ac (Part 2 of 2)
Published: 2014/06/05
Channel: Raj Jain
Simple WiFi N700 USB Adapter 802.11b/g/n Box Opening
Simple WiFi N700 USB Adapter 802.11b/g/n Box Opening
Published: 2013/11/25
Channel: SimpleWiFi
802.11 Communications
802.11 Communications
Published: 2013/11/13
Channel: wifi renault
Zonet ZSR4154WS IEEE 802.11b/g/n Wireless Broadband Router  - $22
Zonet ZSR4154WS IEEE 802.11b/g/n Wireless Broadband Router - $22
Published: 2012/08/24
Channel: DealsOnRouters
AirLive WN-300R Wireless 802.11b/g/n Broadband Router
AirLive WN-300R Wireless 802.11b/g/n Broadband Router
Published: 2009/09/10
Channel: WebAntics.com Shopping Store
Inventek Systems 802.11 b/g/n Serial to Wi-Fi & AT Introduction
Inventek Systems 802.11 b/g/n Serial to Wi-Fi & AT Introduction
Published: 2012/01/13
Channel: InventekSystems
802.11 b/ g/ n 300Mbps USB Wireless WiFi Adapter
802.11 b/ g/ n 300Mbps USB Wireless WiFi Adapter
Published: 2013/06/06
Channel: ZbIZaD
Inventek Systems 802.11 b/g/n Serial to Wi-Fi & AT Command Set Tutorial
Inventek Systems 802.11 b/g/n Serial to Wi-Fi & AT Command Set Tutorial
Published: 2012/01/13
Channel: InventekSystems
CSE574-16-06B: Wireless LANs Part II: 802.11a/b/g/n/ac (Part 2 of 3)
CSE574-16-06B: Wireless LANs Part II: 802.11a/b/g/n/ac (Part 2 of 3)
Published: 2016/10/04
Channel: Raj Jain
High-Level System Design of IEEE 802.11b Standard-Compliant Link Layer for MATLAB-Based SDR
High-Level System Design of IEEE 802.11b Standard-Compliant Link Layer for MATLAB-Based SDR
Published: 2017/08/12
Channel: Sai Info solution Santosh Gore
IEEE 802.11n-2009
IEEE 802.11n-2009
Published: 2014/08/13
Channel: Audiopedia
2.4GHz to 2.5GHz, 802.11b/g/n WiFi Front End Module  |
2.4GHz to 2.5GHz, 802.11b/g/n WiFi Front End Module |
Published: 2012/10/01
Channel: RFMDMedia
300Mbps Outdoor WIFI Station Access Point with 802.11b/g/n Protocol & Wireless Repeater/AP Operation
300Mbps Outdoor WIFI Station Access Point with 802.11b/g/n Protocol & Wireless Repeater/AP Operation
Published: 2018/07/23
Channel: smart gadjets
SPEEDTEST LINKSYS AE3000 DUAL-BAND  VS.  LB-LINK ADAPTER 802.11 B/G/N  WIFI 300Mbps
SPEEDTEST LINKSYS AE3000 DUAL-BAND VS. LB-LINK ADAPTER 802.11 B/G/N WIFI 300Mbps
Published: 2013/11/10
Channel: ComplaintDepartment
TEREBYTE WI-FI RECEIVER 2.4GHZ 802.11B/G/N  600MBPS2.0 WIFI ADEPTER review and unboxing
TEREBYTE WI-FI RECEIVER 2.4GHZ 802.11B/G/N 600MBPS2.0 WIFI ADEPTER review and unboxing
Published: 2017/12/24
Channel: TECH ENTERBIGJI
Wi-Fi Receiver 300Mbps, 2.4GHz, 802.11b/g/n USB 2.0 Wireless Mini Wi-Fi
Wi-Fi Receiver 300Mbps, 2.4GHz, 802.11b/g/n USB 2.0 Wireless Mini Wi-Fi
Published: 2017/03/14
Channel: Technical Hubbb
Can a 802.11 b connect to 5ghz
Can a 802.11 b connect to 5ghz
Published: 2018/05/13
Channel: channel 1
EtherAnt 802.11b radio pair   3 miles
EtherAnt 802.11b radio pair 3 miles
Published: 2008/02/10
Channel: puppetboybiz
http://www.dealextreme.com0WG 1000mW 54Mbps 802.11b/g USB 2.0 WLAN WiFi Wireless
http://www.dealextreme.com0WG 1000mW 54Mbps 802.11b/g USB 2.0 WLAN WiFi Wireless
Published: 2012/05/02
Channel: wwwww452
Unboxing Of Mini Wifi Adapter 2.4 Ghz || 802.11b/g/n || USB 2.0
Unboxing Of Mini Wifi Adapter 2.4 Ghz || 802.11b/g/n || USB 2.0
Published: 2017/04/08
Channel: Unboxing Station
KINGMAX 2.4GHz 802.11 b/g/n 150Mbps WiFi Wireless Network  - DealExtreme
KINGMAX 2.4GHz 802.11 b/g/n 150Mbps WiFi Wireless Network - DealExtreme
Published: 2012/02/28
Channel: DealeXtreme DV
High Power 802.11b/g WiFi USB Adapter
High Power 802.11b/g WiFi USB Adapter
Published: 2010/07/21
Channel: Michael Vinogradov
MobiCom 2016 - Architecture and evaluation of an unplanned 802.11 b mesh network
MobiCom 2016 - Architecture and evaluation of an unplanned 802.11 b mesh network
Published: 2016/11/18
Channel: ACM SIGMOBILE
Portable 2.4GHz 802.11b/g/n 300Mbps Wireless Wi-Fi Router-DX
Portable 2.4GHz 802.11b/g/n 300Mbps Wireless Wi-Fi Router-DX
Published: 2012/10/16
Channel: DealeXtreme DV
lightake:Dynamic WIFI Wireless Sensor LED T-shirt(802.11b or 802.11g )
lightake:Dynamic WIFI Wireless Sensor LED T-shirt(802.11b or 802.11g )
Published: 2009/10/09
Channel: popbuyingvideo
Terabyte 802 Wi-Fi Receiver 500Mbps 2.4Ghz  802.11B/G/N 2.0 Wireless Wi-Fi Network USB  AdapterBlack
Terabyte 802 Wi-Fi Receiver 500Mbps 2.4Ghz 802.11B/G/N 2.0 Wireless Wi-Fi Network USB AdapterBlack
Published: 2018/02/20
Channel: Subrata Das
H2K2: Fun With 802.11b
H2K2: Fun With 802.11b
Published: 2011/09/08
Channel: GBPPR2
Microcom EZ-BR2 802.11b/g Bridge Kit
Microcom EZ-BR2 802.11b/g Bridge Kit
Published: 2010/03/03
Channel: TigerDirect
WPGA: GainSpan GS2000 Ultra Low-Power 802.11b/g/n + 802.15.4 Single Chip
WPGA: GainSpan GS2000 Ultra Low-Power 802.11b/g/n + 802.15.4 Single Chip
Published: 2014/05/12
Channel: WPG Americas
EDUP PCMCIA 802.11B/G Wireless Wifi Card for Laptop
EDUP PCMCIA 802.11B/G Wireless Wifi Card for Laptop
Published: 2008/09/09
Channel: vladudegmail
Get It Done !
Get It Done !
Published: 2017/10/29
Channel: Helping Tutor
Three-Node Visual Demo
Three-Node Visual Demo
Published: 2016/03/08
Channel: 80211b SDR
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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IEEE 802.11b-1999 or 802.11b, is an amendment to the IEEE 802.11 wireless networking specification that extends throughput up to 11 Mbit/s using the same 2.4GHz band. A related amendment was incorporated into the IEEE 802.11-2007 standard.

802.11 is a set of IEEE standards that govern wireless networking transmission methods. They are commonly used today in their 802.11a, 802.11b, 802.11g, 802.11n and 802.11ac versions to provide wireless connectivity in the home, office and some commercial establishments.

Description[edit]

802.11b has a maximum raw data rate of 11 Mbit/s and uses the same CSMA/CA media access method defined in the original standard. Due to the CSMA/CA protocol overhead, in practice the maximum 802.11b throughput that an application can achieve is about 5.9 Mbit/s using TCP and 7.1 Mbit/s using UDP.

802.11b products appeared on the market in mid-1999, since 802.11b is a direct extension of the DSSS (Direct-sequence spread spectrum) modulation technique defined in the original standard. The Apple iBook was the first mainstream computer sold with optional 802.11b networking. Technically, the 802.11b standard uses complementary code keying (CCK) as its modulation technique. The dramatic increase in throughput of 802.11b (compared to the original standard) along with simultaneous substantial price reductions led to the rapid acceptance of 802.11b as the definitive wireless LAN technology.

802.11b devices suffer interference from other products operating in the 2.4 GHz band. Devices operating in the 2.4 GHz range include: microwave ovens, Bluetooth devices, baby monitors and cordless telephones. Interference issues and user density problems within the 2.4 GHz band have become a major concern and frustration for users.

Range[edit]

802.11b is used in a point-to-multipoint configuration, wherein an access point communicates via an omnidirectional antenna with mobile clients within the range of the access point. Typical range depends on the radio frequency environment, output power and sensitivity of the receiver. Allowable bandwidth is shared across clients in discrete channels. A directional antenna focuses output power into a smaller field which increases point-to-point range. Designers of such installations who wish to remain within the law must however be careful about legal limitations on effective radiated power.[1]

Some 802.11b cards operate at 11 Mbit/s, but scale back to 5.5, then to 2, then to 1 Mbit/s (also known as Adaptive Rate Selection) in order to decrease the rate of re-broadcasts that result from errors.

Channels and Frequencies[edit]

802.11b/g channels in 2.4 GHz band
802.11b channel to frequency map [2]
Channel  Center Frequency  Frequency delta Channel Width Overlaps Channels
1 2.412 GHz 5 MHz 2.401–2.423 GHz 2-5
2 2.417 GHz 5 MHz 2.406–2.428 GHz 1,3-6
3 2.422 GHz 5 MHz 2.411–2.433 GHz 1-2,4-7
4 2.427 GHz 5 MHz 2.416–2.438 GHz 1-3,5-8
5 2.432 GHz 5 MHz 2.421–2.443 GHz 1-4,6-9
6 2.437 GHz 5 MHz 2.426–2.448 GHz 2-5,7-10
7 2.442 GHz 5 MHz 2.431–2.453 GHz 3-6,8-11
8 2.447 GHz 5 MHz 2.436–2.458 GHz 4-7,9-12
9 2.452 GHz 5 MHz 2.441–2.463 GHz 5-8,10-13
10 2.457 GHz 5 MHz 2.446–2.468 GHz 6-9,11-13
11 2.462 GHz 5 MHz 2.451–2.473 GHz 7-10,12-13
12 2.467 GHz 5 MHz 2.456–2.478 GHz 8-11,13-14
13 2.472 GHz 5 MHz 2.461–2.483 GHz 9-12, 14
14 2.484 GHz 12 MHz 2.473–2.495 GHz 12-13
Note: Channel 14 is only allowed in Japan, Channels 12 & 13 are allowed in most parts of the world. More information can be found in the List of WLAN channels.

See also[edit]

References[edit]

  1. ^ "Code of Federal Regulations, Title 47-Telecommunications, Chapter I-Federal Communications Commission, Part 15-Radio Frequency Devices, Section 15.247" (PDF). 2006-10-01. Archived (PDF) from the original on 2012-09-07. Retrieved 2013-06-10. 
  2. ^ http://download.wcvirtual.com/reference/802%20Channel%20Freq%20Mappings.pdf[permanent dead link]
  3. ^ "Official IEEE 802.11 working group project timelines". January 26, 2017. Retrieved 2017-02-12. 
  4. ^ "Wi-Fi CERTIFIED n: Longer-Range, Faster-Throughput, Multimedia-Grade Wi-Fi® Networks" (registration required). Wi-Fi Alliance. September 2009. 
  5. ^ "802.11n Delivers Better Range". Wi-Fi Planet. 2007-05-31. 
  6. ^ "IEEE 802.11ac: What Does it Mean for Test?" (PDF). LitePoint. October 2013. 
  7. ^ Lee, Wookbong; Kwak, Jin-Sam; Kafle, Padam; Tingleff, Jens; Yucek, Tevfik; Porat, Ron; Erceg, Vinko; Lan, Zhou; Harada, Hiroshi (2012-07-10). "TGaf PHY proposal". IEEE P802.11. Retrieved 2013-12-29. 
  8. ^ "802.11ad - WLAN at 60 GHz: A Technology Introduction" (PDF). Rohde & Schwarz GmbH. November 21, 2013. p. 14. 
  9. ^ 802.11ad Antenna Differences: Beamsteering, Gain and Range
  10. ^ Sun, Weiping; Choi, Munhwan; Choi, Sunghyun (July 2013). "IEEE 802.11ah: A Long Range 802.11 WLAN at Sub 1 GHz" (PDF). Journal of ICT Standardization. 1 (1): 83–108. doi:10.13052/jicts2245-800X.125. 
  11. ^ Sun, Rob; Xin, Yan; Aboul-Maged, Osama; Calcev, George; Wang, Lei; Au, Edward; Cariou, Laurent; Cordeiro, Carlos; Abu-Surra, Shadi; Chang, Sanghyun; Taori, Rakesh; Kim, TaeYoung; Oh, Jongho; Cho, JanGyu; Motozuka, Hiroyuki; Wee, Gaius. "P802.11 Wireless LANs". IEEE. pp. 2,3. Archived from the original on 2017-12-06. Retrieved December 6, 2017. 

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