802.11bn Channels ====================== .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What are channels in 802.11bn?** Channels in 802.11bn refer to specific frequency ranges, primarily in the 2.4 GHz and 5 GHz bands, used for wireless communication with improved efficiency. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How many channels are available in 802.11bn?** 802.11bn supports multiple channels in both 2.4 GHz and 5 GHz bands, including 20 MHz and 40 MHz bandwidths, with varying channel availability depending on regulatory rules. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What frequency bands does 802.11bn operate in?** It operates primarily in the 2.4 GHz and 5 GHz frequency bands. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What is channel width in 802.11bn?** Supported channel widths include 20 MHz and 40 MHz, enabling better throughput and compatibility with legacy devices. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Why does 802.11bn support 40 MHz channels?** Wider 40 MHz channels help increase data rates compared to legacy 20 MHz channels while maintaining backward compatibility. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Are 802.11bn channels overlapping?** In the 2.4 GHz band, some channels overlap due to limited spectrum, but in 5 GHz, non-overlapping channels are available. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What determines the number of usable 802.11bn channels?** Regulatory domain rules and coexistence mechanisms determine the number and types of usable channels. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does 802.11bn use Dynamic Frequency Selection (DFS)?** Yes, DFS is used in the 5 GHz band to avoid interference with radar and other incumbent users. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does 802.11bn use Transmit Power Control (TPC)?** Yes, TPC helps optimize power levels to reduce interference and maintain link quality. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does 802.11bn handle channel bonding?** It supports bonding two adjacent 20 MHz channels into a 40 MHz channel for higher throughput. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Why is channel planning important in 802.11bn?** Proper channel planning helps minimize interference and optimize network performance in dense environments. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Are all 5 GHz channels available globally for 802.11bn?** No, availability depends on regional regulations and allowed frequency bands. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Can 802.11bn devices auto-select channels?** Yes, devices often automatically select the best available channels based on congestion and interference. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What is the channel center frequency in 802.11bn?** It varies depending on the channel number and band, typically spaced every 5 MHz in 2.4 GHz and 20 MHz in 5 GHz. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How are 802.11bn channels numbered?** Channels follow legacy numbering schemes: 1-14 in 2.4 GHz and standardized channel numbers in 5 GHz such as 36, 40, 44, etc. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What are typical channel widths and numbers in 802.11bn?** Channel widths include 20 MHz and 40 MHz, with common 2.4 GHz channels 1, 6, 11 and 5 GHz channels starting from 36 upwards. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How far apart are 802.11bn channels spaced?** In 2.4 GHz, channels are spaced 5 MHz apart with overlapping; in 5 GHz, channels are spaced 20 MHz apart. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What is co-channel interference in 802.11bn?** Occurs when multiple devices use the same channel, leading to contention and possible throughput degradation. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How can co-channel interference be avoided in 802.11bn?** By assigning non-overlapping channels and using power control and careful deployment. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does weather affect 802.11bn channel performance?** Minimal impact indoors, but outdoor 5 GHz signals can be attenuated by obstacles and weather. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Why is 5 GHz band less congested than 2.4 GHz in 802.11bn?** More channels and less interference from non-Wi-Fi devices in 5 GHz reduce congestion. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What is the typical indoor range for 802.11bn?** Generally 30-50 meters indoors depending on obstacles and environment. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Can 802.11bn channels be used outdoors?** Usage depends on local regulations, with most outdoor use in 5 GHz bands subject to DFS/TPC rules. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What happens if two APs use the same 802.11bn channel?** They compete for airtime, which may cause performance drops due to contention. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What tools assist with 802.11bn channel planning?** Spectrum analyzers, Wi-Fi scanners, and enterprise controllers help optimize channel assignments. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow Topics in this section, * :ref:`List of channels ` * :ref:`List of channel widths ` * :ref:`List of Bands ` * :ref:`Reference links ` .. _channels_step4: .. tab-set:: .. tab-item:: 2.4 GHz Channels for 802.11bn ===================== ======================= ====================== ============== Channel Number (MHz) Center Frequency (MHz) Frequency Range DFS Required ===================== ======================= ====================== ============== 1 2412 2401 – 2423 No 2 2417 2406 – 2428 No 3 2422 2411 – 2433 No 4 2427 2416 – 2438 No 5 2432 2421 – 2443 No 6 2437 2426 – 2448 No 7 2442 2431 – 2453 No 8 2447 2436 – 2458 No 9 2452 2441 – 2463 No 10 2457 2446 – 2468 No 11 2462 2451 – 2473 No 12 2467 2456 – 2478 No (region dependent) 13 2472 2461 – 2483 No (region dependent) 14 2484 2473 – 2495 No (Japan only) ===================== ======================= ====================== ============== .. tab-item:: 5 GHz Channels for 802.11bn ===================== ======================= ====================== ============== Channel Number (MHz) Center Frequency (MHz) Frequency Range DFS Required ===================== ======================= ====================== ============== 36 5180 5170 – 5190 No 40 5200 5190 – 5210 No 44 5220 5210 – 5230 No 48 5240 5230 – 5250 No 52 5260 5250 – 5270 Yes 56 5280 5270 – 5290 Yes 60 5300 5290 – 5310 Yes 64 5320 5310 – 5330 Yes 100 5500 5490 – 5510 Yes 104 5520 5510 – 5530 Yes 108 5540 5530 – 5550 Yes 112 5560 5550 – 5570 Yes 116 5580 5570 – 5590 Yes 120 5600 5590 – 5610 Yes 124 5620 5610 – 5630 Yes 128 5640 5630 – 5650 Yes 132 5660 5650 – 5670 Yes 136 5680 5670 – 5690 Yes 140 5700 5690 – 5710 Yes 144 5720 5710 – 5730 Yes 149 5745 5735 – 5755 No 153 5765 5755 – 5775 No 157 5785 5775 – 5795 No 161 5805 5795 – 5815 No 165 5825 5815 – 5835 No ===================== ======================= ====================== ============== .. tab-item:: 6 GHz Channels for 802.11bn ===================== ======================= ====================== ============== Channel Number (MHz) Center Frequency (MHz) Frequency Range DFS Required ===================== ======================= ====================== ============== 1 5955 5945 – 5965 No 5 5975 5965 – 5985 No 9 5995 5985 – 6005 No 13 6015 6005 – 6025 No 17 6035 6025 – 6045 No 21 6055 6045 – 6065 No 25 6075 6065 – 6085 No 29 6095 6085 – 6105 No 33 6115 6105 – 6125 No 37 6135 6125 – 6145 No 41 6155 6145 – 6165 No 45 6175 6165 – 6185 No 49 6195 6185 – 6205 No 53 6215 6205 – 6225 No 57 6235 6225 – 6245 No 61 6255 6245 – 6265 No 65 6275 6265 – 6285 No 69 6295 6285 – 6305 No 73 6315 6305 – 6325 No 77 6335 6325 – 6345 No 81 6355 6345 – 6365 No 85 6375 6365 – 6385 No 89 6395 6385 – 6405 No 93 6415 6405 – 6425 No 97 6435 6425 – 6445 No 101 6455 6445 – 6465 No 105 6475 6465 – 6485 No 109 6495 6485 – 6505 No 113 6515 6505 – 6525 No 117 6535 6525 – 6545 No 121 6555 6545 – 6565 No 125 6575 6565 – 6585 No 129 6595 6585 – 6605 No 133 6615 6605 – 6625 No 137 6635 6625 – 6645 No 141 6655 6645 – 6665 No 145 6675 6665 – 6685 No 149 6695 6685 – 6705 No 153 6715 6705 – 6725 No 157 6735 6725 – 6745 No 161 6755 6745 – 6765 No 165 6775 6765 – 6785 No 169 6795 6785 – 6805 No 173 6815 6805 – 6825 No 177 6835 6825 – 6845 No 181 6855 6845 – 6865 No 185 6875 6865 – 6885 No 189 6895 6885 – 6905 No 193 6915 6905 – 6925 No 197 6935 6925 – 6945 No 201 6955 6945 – 6965 No 205 6975 6965 – 6985 No 209 6995 6985 – 7005 No 213 7015 7005 – 7025 No 217 7035 7025 – 7045 No 221 7055 7045 – 7065 No 225 7075 7065 – 7085 No 229 7095 7085 – 7105 No 233 7115 7105 – 7125 No ===================== ======================= ====================== ============== .. _channels_step5: .. tab-set:: .. tab-item:: List of channel widths * channel widths .. _channels_step6: .. tab-set:: .. tab-item:: List of Bands ======================= ====================== ====================== ============================================================ Band Name Frequency Range (GHz) Frequency Range (MHz) Channels ======================= ====================== ====================== ============================================================ 2.4 GHz Band 2.400 – 2.485 2400 – 2485 1 – 14 (region dependent) UNII-1 5.150 – 5.250 5150 – 5250 36, 40, 44, 48 UNII-2 (DFS) 5.250 – 5.350 5250 – 5350 52, 56, 60, 64 UNII-2 Extended (DFS) 5.470 – 5.725 5470 – 5725 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144 UNII-3 5.725 – 5.825 5725 – 5825 149, 153, 157, 161, 165 6 GHz Band 5.925 – 7.125 5925 – 7125 1 – 233 (20 MHz channels) ======================= ====================== ====================== ============================================================ .. _channels_step17: .. tab-set:: .. tab-item:: Reference links * Reference links