Band Plan: Difference between revisions

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[[wikipedia:List_of_WLAN_channels|List of WiFi channels.]]
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[[File:Band_plan_5GHz_2021.png]]
  
   
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== Unlicensed Spectrum (USA only) ==
−
== Comments ==
  
  +
  +
* 5.160 to 5.850 GHz - WiFi, often used by [[Commercial WISPs|WISPs]] for end-user connections
  +
* 5.925 to 7.125 GHz - [[wikipedia:Wi-Fi_6|WiFi 6E]]
  +
  +
== San Francisco / Oakland / Berkeley ==
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{| class="wikitable"
  +
|+
  +
!Channel
  +
!Width (MHz)
  +
!Purpose
  +
!Notes
  +
|-
  +
|171
  +
|10
  +
|Cross Bay
  +
|
  +
|-
  +
|173
  +
|20
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|Richmond / Berkeley / Oakland / Hayward
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|We should probably be using 174 to avoid overlap with 171 (see [[wikipedia:List_of_WLAN_channels#5_GHz_(802.11a/h/j/n/ac/ax)|here]])
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|-
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|175
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|10
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|Mount Diablo
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|
  +
|-
  +
|177
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|10
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|Oakland / Berkeley
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|
  +
|-
  +
|179
  +
|10
  +
|SFWEM
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|
  +
|-
  +
|181
  +
|10
  +
|NALCO
  +
|
  +
|-
  +
|183
  +
|10
  +
|NALCO
  +
|
  +
|}
  +
  +
=== Notes ===
  +
I confess that I don't understand how a band plan should work in a wifi network when we have a combination of tight point-to-point links with beam widths of 7° (beam diameter is ~1/8 the beam distance) with sectors with beam widths of 120° (beam diameter is ... massive).
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  +
== San Carlos / San Bruno ==
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{| class="wikitable"
  +
|+
  +
!Channel
  +
!Width (MHz)
  +
!Purpose
  +
! Notes
  +
|-
  +
|171
  +
|10
  +
|
  +
|
  +
|-
  +
|173
  +
|10
  +
|
  +
|
  +
|-
  +
|175
  +
|10
  +
|
  +
|
  +
|-
  +
|177
  +
|10
  +
|
  +
|
  +
|-
  +
| 179
  +
|10
  +
|
  +
|
  +
|-
  +
| 181
  +
|10
  +
|(unused)
  +
|
  +
|-
  +
|183
  +
|10
  +
|(unused)
  +
|
  +
|}
  +
  +
== Redwood City / Belmont ==
  +
{| class="wikitable"
  +
|+
  +
!Channel
  +
!Width (MHz)
  +
!Purpose
  +
! Notes
  +
|-
  +
|171
  +
|10
  +
|
  +
|
  +
|-
  +
|173
  +
|10
  +
|
  +
|
  +
|-
  +
|175
  +
|10
  +
|
  +
|
  +
|-
  +
|177
  +
|10
  +
|
  +
|
  +
|-
  +
| 179
  +
|10
  +
|
  +
|
  +
|-
  +
| 181
  +
|10
  +
|(unused)
  +
|
  +
|-
  +
|183
  +
|10
  +
|(unused)
  +
|
  +
|}
  +
  +
==Mountain View / Sunnyvale / Palo Alto==
  +
{| class="wikitable"
  +
|+
  +
!Channel
  +
!Width (MHz)
  +
!Purpose
  +
! Notes
  +
|-
  +
|171
  +
|10
  +
|
  +
|
  +
|-
  +
|173
  +
|10
  +
|
  +
|
  +
|-
  +
|175
  +
|10
  +
|
  +
|
  +
|-
  +
|177
  +
|10
  +
|
  +
|
  +
|-
  +
| 179
  +
|10
  +
|
  +
|
  +
|-
  +
| 181
  +
|10
  +
|(unused)
  +
|
  +
|-
  +
|183
  +
|10
  +
|(unused)
  +
|
  +
|}
  +
  +
== Fremont ==
  +
{| class="wikitable"
  +
|+
  +
!Channel
  +
!Width (MHz)
  +
!Purpose
  +
!Nodes
  +
|-
  +
|171
  +
|10
  +
|
  +
|
  +
|-
  +
|173
  +
|10
  +
|
  +
|
  +
|-
  +
|175
  +
|10
  +
|
  +
|
  +
|-
  +
|177
  +
|10
  +
|
  +
|
  +
|-
  +
|179
  +
|10
  +
|
  +
|
  +
|-
  +
|181
  +
|10
  +
|Sunol Ridge
  +
|
  +
|-
  +
|183
  +
|10
  +
|
  +
|
  +
|}
  +
  +
== Pleasanton / Livermore ==
  +
{| class="wikitable"
  +
|+
  +
!Channel
  +
!Width (MHz)
  +
!Purpose
  +
!Nodes
  +
|-
  +
|171
  +
|10
  +
|
  +
|
  +
|-
  +
|173
  +
|10
  +
|
  +
|
  +
|-
  +
|175
  +
|10
  +
|
  +
|
  +
|-
  +
|177
  +
|10
  +
|
  +
|
  +
|-
  +
|179
  +
|10
  +
|
  +
|
  +
|-
  +
|181
  +
|10
  +
|
  +
|
  +
|-
  +
|183
  +
|10
  +
|Sunol Ridge
  +
|
  +
|}
  +
  +
==Comments==
  +
Channels are defined to be 5 MHz wide, reaching 2.5 MHz above and below their center frequency. Most channels used by BAM are 10 MHz wide, so +/- 5MHz of their center frequency. This means we only use odd channel numbers as 10 MHz channels overlap with even channels.
  +
  +
20 MHz channels extend +/- 10 MHz. This mean the partially or completely overlap with two channels above and below.
  +
  +
  +
https://www.arednmesh.org/sites/default/files/Device%20Selection%20Chart%20v1.0.xlsx

Latest revision as of 22:50, 21 December 2022

List of WiFi channels.

Unlicensed Spectrum (USA only)

  • 5.160 to 5.850 GHz - WiFi, often used by WISPs for end-user connections
  • 5.925 to 7.125 GHz - WiFi 6E

San Francisco / Oakland / Berkeley

Channel Width (MHz) Purpose Notes
171 10 Cross Bay
173 20 Richmond / Berkeley / Oakland / Hayward We should probably be using 174 to avoid overlap with 171 (see here)
175 10 Mount Diablo
177 10 Oakland / Berkeley
179 10 SFWEM
181 10 NALCO
183 10 NALCO

Notes

I confess that I don't understand how a band plan should work in a wifi network when we have a combination of tight point-to-point links with beam widths of 7° (beam diameter is ~1/8 the beam distance) with sectors with beam widths of 120° (beam diameter is ... massive).

San Carlos / San Bruno

Channel Width (MHz) Purpose Notes
171 10
173 10
175 10
177 10
179 10
181 10 (unused)
183 10 (unused)

Redwood City / Belmont

Channel Width (MHz) Purpose Notes
171 10
173 10
175 10
177 10
179 10
181 10 (unused)
183 10 (unused)

Mountain View / Sunnyvale / Palo Alto

Channel Width (MHz) Purpose Notes
171 10
173 10
175 10
177 10
179 10
181 10 (unused)
183 10 (unused)

Fremont

Channel Width (MHz) Purpose Nodes
171 10
173 10
175 10
177 10
179 10
181 10 Sunol Ridge
183 10

Pleasanton / Livermore

Channel Width (MHz) Purpose Nodes
171 10
173 10
175 10
177 10
179 10
181 10
183 10 Sunol Ridge

Comments

Channels are defined to be 5 MHz wide, reaching 2.5 MHz above and below their center frequency. Most channels used by BAM are 10 MHz wide, so +/- 5MHz of their center frequency. This means we only use odd channel numbers as 10 MHz channels overlap with even channels.

20 MHz channels extend +/- 10 MHz. This mean the partially or completely overlap with two channels above and below.


https://www.arednmesh.org/sites/default/files/Device%20Selection%20Chart%20v1.0.xlsx

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