List of WLAN channels

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The List of WLAN channels is the legally allowed IEEE 802.11 or more commonly Wi-Fi Wireless LAN channels.

The 802.11 workgroup currently documents use in three distinct frequency ranges, 2.4 GHz, 3.6 GHz and 4.9/5.0 GHz bands.[1] Each range is divided into multitude of channels. Countries apply their own regulations to both the allowable channels, allowed users and maximum power levels within these frequency ranges. In some countries, such as the United States, a licensed Amateur Radio operators may use some of the channels at much higher power for long distance wireless access.

Consult your local authority as these regulations may be out of date as they are subject to change at any time.

Contents

[edit] 2.4 GHz (802.11b/g/draft-n)

Graphical representation of Wi-Fi channels in 2.4 GHz band

There are 14 channels designated in the 2.4 GHz range spaced 5 MHz apart (with the exception of a 12 MHz spacing before Channel 14). As the protocol requires 25 MHz of channel separation, adjacent channels overlap and will interfere with each other.

Potential Wireless LAN uses of this range are documented by IEEE 802.11 clauses 18 (802.11b), 19 (802.11g) and 20 (802.11n which is still unreleased by the IEEE, but widely available with Wi-Fi Alliance Draft-n equipment). IEEE 802.11 clauses 14 and 15 also specify potential uses of this range, but did not see widespread implementation.

Countries apply their own regulations to both the allowable channels, allowed users and maximum power levels within this frequency ranges. Consult your local authorities as these regulations may be out of date as they are subject to change at any time. Most of the world will allow the first thirteen channels in the spectrum.

channel frequency
(MHz)		 North America
[2]		 Japan[2] Most of world
[2][3][4][5][6]
1 2412 Yes Yes Yes
2 2417 Yes Yes Yes
3 2422 Yes Yes Yes
4 2427 Yes Yes Yes
5 2432 Yes Yes Yes
6 2437 Yes Yes Yes
7 2442 Yes Yes Yes
8 2447 Yes Yes Yes
9 2452 Yes Yes Yes
10 2457 Yes Yes Yes
11 2462 Yes Yes Yes
12 2467 No Yes Yes
13 2472 No Yes Yes
14 2484 No .11b only[7] No

Note: Earlier, in Spain the only allowable channels were 10-11, and in France 10-13. These restrictions have been removed since, and these countries are currently following the common European policy (channels 1-13).

[edit] 3.6 Ghz (802.11y)

Except where noted, all information taken from Annex J of IEEE 802.11y-2008

This range is documented as only being allowed as a licensed band in the United States. Please see IEEE 802.11y for details.

Countries apply their own regulations to both the allowable channels, allowed users and maximum power levels within this frequency ranges. Consult your local authorities as these regulations may be out of date as they are subject to change at any time.

channel frequency
(MHz)		 United States
5 MHz 10 MHz 20 MHz
131 3657.5 Yes No No
132 3662.5 Yes No No
132 3660.0 No Yes No
133 3667.5 Yes No No
133 3665.0 No No Yes
134 3672.5 Yes No No
134 3670.0 No Yes No
135 3677.5 Yes No No
136 3682.5 Yes No No
136 3680.0 No Yes No
137 3687.5 Yes No No
137 3685.0 No No Yes
138 3689.5 Yes No No
138 3690.0 No Yes No

[edit] 5 Ghz (802.11a/h/j/draft-n)

Except where noted, all information taken from Annex J of IEEE 802.11-2007 + IEEE 802.11k-2008

Countries apply their own regulations to both the allowable channels, allowed users and maximum power levels within this frequency ranges. Consult your local authorities as these regulations may be out of date as they are subject to change at any time.

channel frequency
(MHz)		 United States Europe Japan Singapore China Israel Korea
20 MHz[8] 20 MHz 20 MHz[9] 10 MHz 20 MHz 20 MHz 20 MHz[5] 20 MHz[10]
7 5035 No No No Yes No No No No
8 5040 No No No Yes No No No No
9 5045 No No No Yes No No No No
11 5055 No No No Yes No No No No
12 5060 No No No No No No No No
16 5080 No No No No No No No No
34 5170 No No No No No No Yes Yes
36 5180 Yes Yes Yes No Yes No Yes Yes
38 5190 No No No No No No Yes Yes
40 5200 Yes Yes Yes No Yes No Yes Yes
42 5210 No No No No No No Yes Yes
44 5220 Yes Yes Yes No Yes No Yes Yes
46 5230 No No No No No No Yes Yes
48 5240 Yes Yes Yes No No No Yes Yes
52 5260 Yes Yes Yes No No No Yes Yes
56 5280 Yes Yes Yes No No No Yes Yes
60 5300 Yes Yes Yes No No No Yes Yes
64 5320 Yes Yes Yes No No No Yes Yes
100 5500 Yes Yes Yes No No No No Yes
104 5520 Yes Yes Yes No No No No Yes
108 5540 Yes Yes Yes No No No No Yes
112 5560 Yes Yes Yes No No No No Yes
116 5580 Yes Yes Yes No No No No Yes
120 5600 Yes Yes Yes No No No No Yes
124 5620 Yes Yes Yes No No No No Yes
128 5640 Yes Yes Yes No No No No Yes
132 5660 Yes Yes Yes No No No No No
136 5680 Yes Yes Yes No No No No No
140 5700 Yes Yes Yes No No No No No
149 5745 Yes No No No Yes Yes No Yes
153 5765 Yes No No No Yes Yes No Yes
157 5785 Yes No No No Yes Yes No Yes
161 5805 Yes No No No Yes Yes No Yes
165 5825 Yes No No No Yes Yes No Yes
183 4915 No No No Yes No No No No
184 4920 No No Yes Yes No No No No
185 4925 No No No Yes No No No No
187 4935 No No No Yes No No No No
188 4940 No No Yes Yes No No No No
189 4945 No No No Yes No No No No
192 4960 No No Yes No No No No No
196 4980 No No Yes No No No No No

Note: The Japanese channels operating at 10 MHz of bandwidth operate at half the data rate as the channels with 20 MHz of bandwidth for the same modulation scheme.

[edit] See also

[edit] References

  1. ^ "IEEE 802.11-2007: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications". IEEE. 2007-03-08. http://standards.ieee.org/getieee802/802.11.html. 
  2. ^ a b c IEEE 802.11-2007 — Table 18-9
  3. ^ France: "WLAN regulatory update". 2003-02-03. http://www.arcep.fr/index.php?id=8571&L=1&tx_gsactualite_pi1%5Buid%5D=232&tx_gsactualite_pi1%5Bannee%5D=2003&tx_gsactualite_pi1%5Btheme%5D=0&tx_gsactualite_pi1%5Bmotscle%5D=&tx_gsactualite_pi1%5BbackID%5D=2122&cHash=a558568045. 
  4. ^ Spain: http://web.archive.org/web/20080206082504/http://www.mityc.es/Telecomunicaciones/Secciones/Espectro/cnaf/
  5. ^ a b Israel: "צו הטלגרף האלחוטי (אי תחולת הפקודה) (מס' 2), התשס"ו - 2005" (in hebrew). http://www.moc.gov.il/sip_storage/FILES/3/293.pdf. 
  6. ^ Australia: "Radiocommunications (Low Interference Potential Devices) Class Licence 2000". comlaw.gov.au. http://www.comlaw.gov.au/comlaw/legislation/legislativeinstrumentcompilation1.nsf/previewlodgmentattachments/2CCEA68430FE6A29CA2573C9002150EC/$file/RadcomLIPDClassLic2000.htm#param6. Retrieved on 2008-02-22. 
  7. ^ Channel 14 is valid only for DSSS and CCK modes (Clause 18 a.k.a. 802.11b) in Japan. OFDM (i.e. 802.11g) may not be used. (IEEE 802.11-2007 §19.4.2)
  8. ^ FCC 15.407 as of August 8, 2008 - hallikainen.com
  9. ^ 802.11-2007 Japan MIC Released the new 5 GHz band (W56). Bureau Veritas — ADT. http://www.adt.com.tw/english/news_files/81.pdf. Retrieved on 2008-02-23. 
  10. ^ Korea Frequency Distribution Table 2008.12.31 (in Korean)
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