IEEE 802.11ac-2013

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Short description: Wireless networking standard in the 802.11 family

IEEE 802.11ac-2013 or 802.11ac is a wireless networking standard in the IEEE 802.11 set of protocols (which is part of the Wi-Fi networking family), providing high-throughput wireless local area networks (WLANs) on the 5 GHz band.[lower-alpha 1] The standard has been retroactively labelled as Wi-Fi 5 by Wi-Fi Alliance.[1][2]

The specification has multi-station throughput of at least 1.1 gigabit per second (1.1 Gbit/s) and single-link throughput of at least 500 megabits per second (0.5 Gbit/s).[3] This is accomplished by extending the air-interface concepts embraced by 802.11n: wider RF bandwidth (up to 160 MHz), more MIMO spatial streams (up to eight), downlink multi-user MIMO (up to four clients), and high-density modulation (up to 256-QAM).[4][5]

The Wi-Fi Alliance separated the introduction of ac wireless products into two phases ("waves"), named "Wave 1" and "Wave 2".[6][7] From mid-2013, the alliance started certifying Wave 1 802.11ac products shipped by manufacturers, based on the IEEE 802.11ac Draft 3.0 (the IEEE standard was not finalized until later that year).[8] Subsequently in 2016, Wi-Fi Alliance introduced the Wave 2 certification, which includes additional features like MU-MIMO (down-link only), 160 MHz channel width support, support for more 5 GHz channels, and four spatial streams (with four antennas; compared to three in Wave 1 and 802.11n, and eight in IEEE's 802.11ax specification).[9] It meant Wave 2 products would have higher bandwidth and capacity than Wave 1 products.[10]

New technologies

New technologies introduced with 802.11ac include the following:[5][11]

  • Extended channel binding
    • Optional 160 MHz and mandatory 80 MHz channel bandwidth for stations; cf. 40 MHz maximum in 802.11n.
  • More MIMO spatial streams
    • Support for up to eight spatial streams (vs. four in 802.11n)
  • Downlink multi-user MIMO (MU-MIMO, allows up to four simultaneous downlink MU-MIMO clients)
    • Multiple STAs, each with one or more antennas, transmit or receive independent data streams simultaneously.
    • Downlink MU-MIMO (one transmitting device, multiple receiving devices) included as an optional mode.
  • Modulation
    • 256-QAM, rate 3/4 and 5/6, added as optional modes (vs. 64-QAM, rate 5/6 maximum in 802.11n).
    • Some vendors offer a non-standard 1024-QAM mode, providing 25% higher data rate compared to 256-QAM
  • Other elements/features
    • Beamforming with standardized sounding and feedback for compatibility between vendors (non-standard in 802.11n made it hard for beamforming to work effectively between different vendor products)
    • MAC modifications (mostly to support above changes)
    • Coexistence mechanisms for 20, 40, 80, and 160 MHz channels, 11ac and 11a/n devices
    • Adds four new fields to the PPDU header identifying the frame as a very high throughput (VHT) frame as opposed to 802.11n's high throughput (HT) or earlier. The first three fields in the header are readable by legacy devices to allow coexistence
    • DFS was mandated between channels 52 - 144 for 5 Ghz to reduce interference with weather stations using the same frequency band.

Features

Mandatory

  • Borrowed from the 802.11a/802.11g specifications:
  • Newly introduced by the 802.11ac specification:
    • 80 MHz channel bandwidths

Optional

  • Borrowed from the 802.11n specification:
    • Two to four spatial streams
    • Low-density parity-check code (LDPC)
    • Space–time block coding (STBC)
    • Transmit beamforming (TxBF)
    • 400 ns short guard interval (SGI)
  • Newly introduced by the 802.11ac specification:
    • five to eight spatial streams
    • 160 MHz channel bandwidths (contiguous 80+80)
    • 80+80 MHz channel bonding (discontiguous 80+80)
    • MCS 8/9 (256-QAM)

New scenarios and configurations

The single-link and multi-station enhancements supported by 802.11ac enable several new WLAN usage scenarios, such as simultaneous streaming of HD video to multiple clients throughout the home, rapid synchronization and backup of large data files, wireless display, large campus/auditorium deployments, and manufacturing floor automation.[12]

To fully utilize their WLAN capacities, 802.11ac access points and routers have sufficient throughput to require the inclusion of a USB 3.0 interface to provide various services such as video streaming, FTP servers, and personal cloud services.[13] With storage locally attached through USB 2.0, filling the bandwidth made available by 802.11ac was not easily accomplished.

Example configurations

All rates assume 256-QAM, rate 5/6:

Scenario Typical client
form factor		 PHY link rate Aggregate
capacity
(speed)
One-antenna AP, one-antenna STA, 80 MHz Handheld 433 Mbit/s 433 Mbit/s
Two-antenna AP, two-antenna STA, 80 MHz Tablet, laptop 867 Mbit/s 867 Mbit/s
One-antenna AP, one-antenna STA, 160 MHz Handheld 867 Mbit/s 867 Mbit/s
Three-antenna AP, three-antenna STA, 80 MHz Laptop, PC 1.30 Gbit/s 1.30 Gbit/s
Two-antenna AP, two-antenna STA, 160 MHz Tablet, laptop 1.73 Gbit/s 1.73 Gbit/s
Four-antenna AP, four one-antenna STAs, 160 MHz
(MU-MIMO)		 Handheld 867 Mbit/s to each STA 3.39 Gbit/s
Eight-antenna AP, 160 MHz (MU-MIMO)
  • one four-antenna STA
  • one two-antenna STA
  • two one-antenna STAs
 Digital TV, Set-top Box,
Tablet, Laptop, PC, Handheld
  • 3.47 Gbit/s to four-antenna STA
  • 1.73 Gbit/s to two-antenna STA
  • 867 Mbit/s to each one-antenna STA
 6.93 Gbit/s
Eight-antenna AP, four 2-antenna STAs, 160 MHz
(MU-MIMO)		 Digital TV, tablet, laptop, PC 1.73 Gbit/s to each STA 6.93 Gbit/s

Wave 1 vs. Wave 2

Wave 2, referring to products introduced in 2016, offers a higher throughput than legacy Wave 1 products, those introduced starting in 2013. The maximum physical layer theoretical rate for Wave 1 is 1.3 Gbit/s, while Wave 2 can reach 2.34 Gbit/s. Wave 2 can therefore achieve 1 Gbit/s even if the real world throughput turns out to be only 50% of the theoretical rate. Wave 2 also supports a higher number of connected devices.[10]

Data rates and speed

Modulation and coding schemes
MCS
index[lower-alpha 2] 		Spatial
Streams 		Modulation
type 		Coding
rate 		Data rate (Mbit/s)[14]
20 MHz channels 40 MHz channels 80 MHz channels 160 MHz channels
800 ns GI 400 ns GI 800 ns GI 400 ns GI 800 ns GI 400 ns GI 800 ns GI 400 ns GI
0 1 BPSK 1/2 6.5 7.2 13.5 15 29.3 32.5 58.5 65
1 1 QPSK 1/2 13 14.4 27 30 58.5 65 117 130
2 1 QPSK 3/4 19.5 21.7 40.5 45 87.8 97.5 175.5 195
3 1 16-QAM 1/2 26 28.9 54 60 117 130 234 260
4 1 16-QAM 3/4 39 43.3 81 90 175.5 195 351 390
5 1 64-QAM 2/3 52 57.8 108 120 234 260 468 520
6 1 64-QAM 3/4 58.5 65 121.5 135 263.3 292.5 526.5 585
7 1 64-QAM 5/6 65 72.2 135 150 292.5 325 585 650
8 1 256-QAM 3/4 78 86.7 162 180 351 390 702 780
9 1 256-QAM 5/6 N/A N/A 180 200 390 433.3 780 866.7
0 2 BPSK 1/2 13 14.4 27 30 58.5 65 117 130
1 2 QPSK 1/2 26 28.9 54 60 117 130 234 260
2 2 QPSK 3/4 39 43.3 81 90 175.5 195 351 390
3 2 16-QAM 1/2 52 57.8 108 120 234 260 468 520
4 2 16-QAM 3/4 78 86.7 162 180 351 390 702 780
5 2 64-QAM 2/3 104 115.6 216 240 468 520 936 1040
6 2 64-QAM 3/4 117 130.3 243 270 526.5 585 1053 1170
7 2 64-QAM 5/6 130 144.4 270 300 585 650 1170 1300
8 2 256-QAM 3/4 156 173.3 324 360 702 780 1404 1560
9 2 256-QAM 5/6 N/A N/A 360 400 780 866.7 1560 1733.3
0 3 BPSK 1/2 19.5 21.7 40.5 45 87.8 97.5 175.5 195
1 3 QPSK 1/2 39 43.3 81 90 175.5 195 351 390
2 3 QPSK 3/4 58.5 65 121.5 135 263.3 292.5 526.5 585
3 3 16-QAM 1/2 78 86.7 162 180 351 390 702 780
4 3 16-QAM 3/4 117 130 243 270 526.5 585 1053 1170
5 3 64-QAM 2/3 156 173.3 324 360 702 780 1404 1560
6 3 64-QAM 3/4 175.5 195 364.5 405 N/A N/A 1579.5 1755
7 3 64-QAM 5/6 195 216.7 405 450 877.5 975 1755 1950
8 3 256-QAM 3/4 234 260 486 540 1053 1170 2106 2340
9 3 256-QAM 5/6 260 288.9 540 600 1170 1300 2340 2600
0 4 BPSK 1/2 26 28.8 54 60 117.2 130 234 260
1 4 QPSK 1/2 52 57.6 108 120 234 260 468 520
2 4 QPSK 3/4 78 86.8 162 180 351.2 390 702 780
3 4 16-QAM 1/2 104 115.6 216 240 468 520 936 1040
4 4 16-QAM 3/4 156 173.2 324 360 702 780 1404 1560
5 4 64-QAM 2/3 208 231.2 432 480 936 1040 1872 2080
6 4 64-QAM 3/4 234 260 486 540 1053.2 1170 2106 2340
7 4 64-QAM 5/6 260 288.8 540 600 1170 1300 2340 2600
8 4 256-QAM 3/4 312 346.8 648 720 1404 1560 2808 3120
9 4 256-QAM 5/6 N/A N/A 720 800 1560 1733.3 3120 3466.7

Several companies are currently offering 802.11ac chipsets with higher modulation rates: MCS-10 and MCS-11 (1024-QAM), supported by Quantenna and Broadcom. Although technically not part of 802.11ac, these new MCS indices became official in the 802.11ax standard, ratified in 2021.

160 MHz channels are unavailable in some countries due to regulatory issues that allocated some frequencies for other purposes.

Advertised speeds

802.11ac-class device wireless speeds are often advertised as AC followed by a number, that number being the highest link rates in Mbit/s of all the simultaneously-usable radios in the device added up. For example, an AC1900 access point might have 600 Mbit/s capability on its 2.4 GHz radio and 1300 Mbit/s capability on its 5 GHz radio. No single client device could connect and achieve 1900 Mbit/s of throughput, but separate devices each connecting to the 2.4 GHz and 5 GHz radios could achieve combined throughput approaching 1900 Mbit/s. Different possible stream configurations can add up to the same AC number.

Type 2.4 GHz band[lower-alpha 1]
Mbit/s		 2.4 GHz band config
[all 40 MHz]		 5 GHz band
Mbit/s		 5 GHz band config
[all 80 MHz]
AC450[15] - - 433 1 stream @ MCS 9
AC600 150 1 stream @ MCS 7 433 1 stream @ MCS 9
AC750 300 2 streams @ MCS 7 433 1 stream @ MCS 9
AC1000 300 2 streams @ MCS 7 650 2 streams @ MCS 7
AC1200 300 2 streams @ MCS 7 867 2 streams @ MCS 9
AC1300 400 2 streams @ 256-QAM 867 2 streams @ MCS 9
AC1300[16] - - 1,300 3 streams @ MCS 9
AC1350[17] 450 3 streams @ MCS 7 867 2 streams @ MCS 9
AC1450 450 3 streams @ MCS 7 975 3 streams @ MCS 7
AC1600 300 2 streams @ MCS 7 1,300 3 streams @ MCS 9
AC1700 800 4 streams @ 256-QAM 867 2 streams @ MCS 9
AC1750 450 3 streams @ MCS 7 1,300 3 streams @ MCS 9
AC1900 600[lower-alpha 3] 3 streams @ 256-QAM 1,300 3 streams @ MCS 9
AC2100 800 4 streams @ 256-QAM 1,300 3 streams @ MCS 9
AC2200 450 3 streams @ MCS 7 1,733 4 streams @ MCS 9
AC2300 600 4 streams @ MCS 7 1,625 3 streams @ 1024-QAM
AC2400 600 4 streams @ MCS 7 1,733 4 streams @ MCS 9
AC2600 800[lower-alpha 3] 4 streams @ 256-QAM 1,733 4 streams @ MCS 9
AC2900 750[lower-alpha 4] 3 streams @ 1024-QAM 2,167 4 streams @ 1024-QAM
AC3000 450 3 streams @ MCS 7 1,300 + 1,300 3 streams @ MCS 9 x 2
AC3150 1000[lower-alpha 4] 4 streams @ 1024-QAM 2,167 4 streams @ 1024-QAM
AC3200 600[lower-alpha 3] 3 streams @ 256-QAM 1,300 + 1,300[lower-alpha 5] 3 streams @ MCS 9 x 2
AC5000 600 4 streams @ MCS 7 2,167 + 2,167 4 streams @ 1024-QAM x 2
AC5300[20] 1000[lower-alpha 4] 4 streams @ 1024-QAM 2,167 + 2,167 4 streams @ 1024-QAM x 2

Products

Commercial routers and access points

Quantenna released the first 802.11ac chipset for retail Wi-Fi routers and consumer electronics on November 15, 2011.[21] Redpine Signals released the first low power 802.11ac technology for smartphone application processors on December 14, 2011.[22] On January 5, 2012, Broadcom announced its first 802.11ac Wi-Fi chips and partners[23] and on April 27, 2012, Netgear announced the first Broadcom-enabled router.[24] On May 14, 2012, Buffalo Technology released the world’s first 802.11ac products to market, releasing a wireless router and client bridge adapter.[25] On December 6, 2012, Huawei announced commercial availability of the industry's first enterprise-level 802.11ac Access Point.[26]

Motorola Solutions is selling 802.11ac access points including the AP 8232.[27] In April 2014, Hewlett-Packard started selling the HP 560 access point in the controller-based WLAN enterprise market segment.[28]

Commercial laptops

On June 7, 2012, it was reported that Asus had unveiled its ROG G75VX gaming notebook, which would be the first consumer-oriented notebook to be fully compliant with 802.11ac[29] (albeit in its "draft 2.0" version).

Apple began implementing 802.11ac starting with the MacBook Air in June 2013,[30][31] followed by the MacBook Pro and Mac Pro later that year.[32][33]

(As of December 2013) Hewlett-Packard incorporates 802.11ac compliance in laptop computers.[34]

Commercial handsets (partial list)

Commercial tablets

Chipsets

Notes

  1. ↑ 1.0 1.1 802.11ac only specifies operation in the 5 GHz band. Operation in the 2.4 GHz band is specified by 802.11n.
  2. ↑ MCS 9 is not applicable to all channel width/spatial stream combinations.
  3. ↑ 3.0 3.1 3.2 With 802.11n, 600 Mbit/s in the 2.4 GHz band can be achieved by using four spatial streams at 150 Mbit/s each. (As of December 2014), commercially available devices that achieve 600 Mbit/s in the 2.4 GHz band use 3 spatial streams at 200 Mbit/s each.[18][19] This requires the use of 256-QAM modulation, which is not compliant with 802.11n and can be considered a proprietary extension.[19]
  4. ↑ 4.0 4.1 4.2 With proprietary extension to 802.11n, using 40MHz channel in 2.4GHz, 400ns guard interval, 1024-QAM, and 4 spatial streams.
  5. ↑ (As of December 2014), commercially available AC3200 devices use two separate radios with 1,300 Mbit/s each to achieve 2,600 Mbit/s total in the 5 GHz band.

Comparison

IEEE 802.11 network PHY standards
Frequency
range,
or type 		PHY Protocol Release
date[54] 		Frequency Bandwidth Stream data rate[55] Allowable
MIMO streams 		Modulation Approximate
range[citation needed]
Indoor Outdoor
(GHz) (MHz) (Mbit/s)
1–6 GHz DSSS/FHSS[56] 802.11-1997 Jun 1997 2.4 22 1, 2 N/A DSSS, FHSS 20 m (66 ft) 100 m (330 ft)
HR-DSSS[56] 802.11b Sep 1999 2.4 22 1, 2, 5.5, 11 N/A DSSS 35 m (115 ft) 140 m (460 ft)
OFDM 802.11a Sep 1999 5 5/10/20 6, 9, 12, 18, 24, 36, 48, 54
(for 20 MHz bandwidth,
divide by 2 and 4 for 10 and 5 MHz) 		N/A OFDM 35 m (115 ft) 120 m (390 ft)
802.11j Nov 2004 4.9/5.0[D][57][failed verification] ? ?
802.11p Jul 2010 5.9 ? 1,000 m (3,300 ft)[58]
802.11y Nov 2008 3.7[A] ? 5,000 m (16,000 ft)[A]
ERP-OFDM(, etc.) 802.11g Jun 2003 2.4 38 m (125 ft) 140 m (460 ft)
HT-OFDM[59] 802.11n Oct 2009 2.4/5 20 Up to 288.8[B] 4 MIMO-OFDM 70 m (230 ft) 250 m (820 ft)[60][failed verification]
40 Up to 600[B]
VHT-OFDM[59] 802.11ac Dec 2013 5 20 Up to 346.8[B] 8 MIMO-OFDM 35 m (115 ft)[61] ?
40 Up to 800[B]
80 Up to 1733.2[B]
160 Up to 3466.8[B]
HE-OFDM 802.11ax September 2019 [62] 2.4/5/6 20 Up to 1147[F] 8 MIMO-OFDM 30 m (98 ft) 120 m (390 ft) [G]
40 Up to 2294[F]
80 Up to 4804[F]
80+80 Up to 9608[F]
mmWave DMG[63] 802.11ad Dec 2012 60 2,160 Up to 6,757[64]
(6.7 Gbit/s) 		N/A OFDM, single carrier, low-power single carrier 3.3 m (11 ft)[65] ?
802.11aj Apr 2018 45/60[C] 540/1,080[66] Up to 15,000[67]
(15 Gbit/s) 		4[68] OFDM, single carrier[68] ? ?
EDMG[69] 802.11ay Est. May 2020 60 8000 Up to 20,000 (20 Gbit/s)[70] 4 OFDM, single carrier 10 m (33 ft) 100 m (328 ft)
Sub-1 GHz IoT TVHT[71] 802.11af Feb 2014 0.054–0.79 6–8 Up to 568.9[72] 4 MIMO-OFDM ? ?
S1G[71] 802.11ah Dec 2016 0.7/0.8/0.9 1–16 Up to 8.67 (@2 MHz)[73] 4 ? ?
2.4 GHz, 5 GHz WUR 802.11ba[E] Est. Sep 2020 2.4/5 4.06 0.0625, 0.25 (62.5 kbit/s, 250 kbit/s) N/A OOK (Multi-carrier OOK) ? ?
Light (Li-Fi) IR 802.11-1997 Jun 1997 ? ? 1, 2 N/A PPM ? ?
? 802.11bb Est. Jul 2021 60000-790000 ? ? N/A ? ? ?
802.11 Standard rollups
  802.11-2007 Mar 2007 2.4, 5 Up to 54 DSSS, OFDM
802.11-2012 Mar 2012 2.4, 5 Up to 150[B] DSSS, OFDM
802.11-2016 Dec 2016 2.4, 5, 60 Up to 866.7 or 6,757[B] DSSS, OFDM
  • A1 A2 IEEE 802.11y-2008 extended operation of 802.11a to the licensed 3.7 GHz band. Increased power limits allow a range up to 5,000 m. (As of 2009), it is only being licensed in the United States by the FCC.
  • B1 B2 B3 B4 B5 B6 Based on short guard interval; standard guard interval is ~10% slower. Rates vary widely based on distance, obstructions, and interference.
  • C1 For Chinese regulation.
  • D1 For Japanese regulation.
  • E1 Wake-up Radio (WUR) Operation.
  • F1 F2 F3 F4 For single-user cases only, based on default guard interval which is 0.8 micro seconds. Since multi-user via OFDMA has become available for 802.11ax, these may decrease. Also, these theoretical values depend on the link distance, whether the link is line-of-sight or not, interferences and the multi-path components in the environment.
  • G1 The default guard interval is 0.8 micro seconds. However, 802.11ax extended the maximum available guard interval to 3.2 micro seconds, in order to support Outdoor communications, where the maximum possible propagation delay is larger compared to Indoor environments.

See also

References

  1. ↑ "Wi-Fi Alliance introduces Wi-Fi 6". https://www.wi-fi.org/news-events/newsroom/wi-fi-alliance-introduces-wi-fi-6. 
  2. ↑ Shankland, Stephen (2018-10-03). "Here Come Wi-Fi 4, 5 and 6 in Plan to Simplify 802.11 Networking Names – The Wi-Fi Alliance Wants to Make Wireless Networks Easier to Understand and Recognize". https://www.cnet.com/news/wi-fi-alliance-simplifying-802-11-wireless-network-tech-names/. 
  3. ↑ Van Nee, Richard (2011). "Breaking the Gigabit-per-second barrier with 802.11ac". IEEE Wireless Communications Magazine. http://www.jorianvannee.nl/wifi. 
  4. ↑ Kassner, Michael (2013-06-18). "Cheat Sheet: What You Need to Know about 802.11ac". http://www.techrepublic.com/blog/networking/cheat-sheet-what-you-need-to-know-about-80211ac/6689. 
  5. ↑ 5.0 5.1 "802.11ac: A Survival Guide". http://chimera.labs.oreilly.com/books/1234000001739/ch04.html. 
  6. ↑ "802.11AC WAVE 2 A XIRRUS WHITE PAPER". https://www.xirrus.com/pdf/Wave2_Whitepaper.pdf. 
  7. ↑ "802.11ac Wi-Fi Part 2: Wave 1 and Wave 2 Products". https://www.networkcomputing.com/wireless/80211ac-wi-fi-part-2-wave-1-and-wave-2-products/1614338859. 
  8. ↑ "802.11ac: The Fifth Generation of Wi-Fi Technical White Paper". March 2014. https://cdn2.hubspot.net/hubfs/282305/Old/New%20Belden.com%20-%20Master%20Resources/blog-pdfs/white_paper_c11-713103.pdf. 
  9. ↑ "Wi-Fi Alliance launches 802.11ac Wave 2 certification". 29 June 2016. https://www.rcrwireless.com/20160629/network-infrastructure/wi-fi/wi-fi-alliance-launches-802-11ac-wave-2-certification-tag6. 
  10. ↑ 10.0 10.1 "6 things you need to know about 802.11ac Wave 2". 2016-07-13. https://www.techrepublic.com/article/6-things-you-need-to-know-about-802-11ac-wave-2/. 
  11. ↑ Bejarano, Oscar; Knightly, Edward; Park, Minyoung (2013-10-08). "IEEE 802.11ac: from channelization to multi-user MIMO". IEEE Communications Magazine 51 (10): 84–90. doi:10.1109/MCOM.2013.6619570. 
  12. ↑ de Vegt, Rolf (2008-11-10). "802.11ac Usage Models Document". https://mentor.ieee.org/802.11/dcn/09/11-09-0161-02-00ac-802-11ac-usage-model-document.ppt. 
  13. ↑ "ASUS RT-AC56U & USB-AC56 802.11AC Review". http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/63773-asus-rt-ac56u-usb-ac56-802-11ac-review.html. 
  14. ↑ "IEEE Std 802.11ac™-2013 - 22.5 Parameters for VHT-MCSs". IEEE. 2013-12-11. pp. 323–339. http://standards.ieee.org/getieee802/download/802.11ac-2013.pdf. 
  15. ↑ "AC580 USB Wireless Adapter Roundup". 2014-11-04. https://www.smallnetbuilder.com/wireless/wireless-reviews/32545-ac580-usb-wireless-adapter-roundup. 
  16. ↑ "Linksys WUMC710 Wireless-AC Universal Media Connector Reviewed". 2014-01-28. http://www.smallnetbuilder.com/wireless/wireless-reviews/32327-linksys-wumc710-wireless-ac-universal-media-connector-reviewed. 
  17. ↑ "Archer C59". 2017-03-19. http://www.tp-link.com/us/products/details/cat-5506_Archer-C59.html#specifications. 
  18. ↑ Ganesh, T S (2014-09-02). "Netgear R7500 Nighthawk X4 Integrates Quantenna 4x4 ac Radio and Qualcomm IPQ8064 SoC". http://www.anandtech.com/show/8464/netgear-r7500-nighthawk-x4-integrates-quantenna-4x4-ac-radio-and-qualcomm-ipq8064-soc. 
  19. ↑ 19.0 19.1 Higgins, Tim (2013-10-08). "AC1900: Innovation or 3D Wi-Fi?". http://www.smallnetbuilder.com/wireless/wireless-features/32238-ac1900-innovation-or-3d-wi-fi. 
  20. ↑ Ngo, Dong. "Netgear R8500 Nighthawk X8 AC5300 Smart WiFi Router review". http://www.cnet.com/products/netgear-r8500-nighthawk-x8-ac5300-smart-wifi-router/#!. 
  21. ↑ "Quantenna Launches World's First 802.11ac Gigabit-Wireless Solution for Retail Wi-Fi Routers and Consumer Electronics" (Press release). Quantenna. 2011-11-15.
  22. ↑ "Redpine Signals Releases First Ultra Low Power 802.11ac Technology for Smartphone Application Processors" (Press release). Redpine Signals. 2011-12-14. Retrieved 2013-03-15.
  23. ↑ "Broadcom Launches First Gigabit Speed 802.11ac Chips - Opens 2012 CES with 5th Generation (5G) Wi-Fi Breakthrough" (Press release). Broadcom. 2012-01-05. Retrieved 2013-03-15.
  24. ↑ "Netgear's R6300 router is first to use Broadcom 802.11ac chipset, will ship next month for $200". Engadget. https://www.engadget.com/2012/04/26/netgear-r6300-802-11ac-router. 
  25. ↑ "Buffalo's 802.11ac Wireless Solutions Available Now" (Press release). Austin, Texas: Buffalo Technology (via PRNewswire). May 14, 2012. Retrieved 2013-03-15.
  26. ↑ "Huawei Announces Commercial Availability of Industry's First Enterprise-level 802.11ac Access Point". Huawei. 6 December 2012. http://enterprise.huawei.com/ilink/enenterprise/news-event/news/news-list/HW_198472?KeyTemps=. 
  27. ↑ "Motorola Modular Access Points Performance Review" (in en). http://broadbandlanding.com/research/mmap/. 
  28. ↑ "HP Launches the HP 560 802.11ac Access Point". HP. 2014-03-31. http://h17007.www1.hp.com/us/en/networking/products/wireless/HP_560_802_11ac_Dual_Radio_Access_Point_Series/index.aspx#tab=TAB1. 
  29. ↑ "Asus gaming notebook first to feature full 802.11ac". Electronista. 2012-06-07. http://www.electronista.com/articles/12/06/07/fifth.generation.wi.fi.standard.finally.reaching.consumers. 
  30. ↑ "Apple unveils new MacBook Air lineup with all-day battery life, 802.11ac Wi-Fi". AppleInsider. 2013-06-11. http://appleinsider.com/articles/13/06/10/apple-unveils-new-macbook-air-lineup-with-all-day-battery-life-80211ac-wi-fi. 
  31. ↑ "Apple - Macbook Air". https://www.apple.com/macbook-air. 
  32. ↑ "MacBook Pro with Retina display - Technical Specifications". Apple. https://www.apple.com/macbook-pro/specs-retina/. 
  33. ↑ "Mac Pro - Technical Specifications". Apple. https://www.apple.com/mac-pro/specs/. 
  34. ↑ "HP ENVY TouchSmart 17-j043cl Notebook PC Product Specifications HP ENVY TouchSmart 17-j043cl Notebook PC". http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03904324&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=5447282#N364. 
  35. ↑ "HTC One Teardown". 25 March 2013. http://www.ifixit.com/Teardown/HTC+One+Teardown/13494/2. 
  36. ↑ "HTC One M8 | HTC United States | HTC United States". http://www.htc.com/us/smartphones/htc-one/#specs. 
  37. ↑ "Inside the Samsung Galaxy S4 - Recent Teardowns". 27 April 2013. http://www.chipworks.com/blog/recentteardowns/2013/04/25/inside-the-samsung-galaxy-s4/. 
  38. ↑ "Cellular, WiFi, Speaker & Noise Rejection - Samsung Galaxy Note 3 Review". http://www.anandtech.com/show/7376/samsung-galaxy-note-3-review/7. 
  39. ↑ "LG Nexus 5 - Full phone specifications". http://www.gsmarena.com/lg_nexus_5-5705.php. 
  40. ↑ "Nexus 5 Teardown". 31 October 2013. https://www.ifixit.com/Teardown/Nexus+5+Teardown/19016#s53729. 
  41. ↑ "Nokia Lumia 1520 Specifications - Microsoft - USA". 2014-07-23. http://www.microsoft.com/en-us/mobile/phone/lumia1520/specifications/. 
  42. ↑ "Nokia Lumia Icon". Nokia. http://www.microsoft.com/en-us/mobile/phone/lumia-icon/specifications/. 
  43. ↑ "HTC One (M8) Teardown". 25 March 2014. https://www.ifixit.com/Teardown/HTC+One+(M8)+Teardown/23615. 
  44. ↑ "Samsung Galaxy S5 Hits Stores, Chock Full of Broadcom Tech - Broadcom Connected". 22 April 2014. http://blog.broadcom.com/wireless-technology/samsung-galaxy-s5-hits-stores-chock-full-of-broadcom-tech/. 
  45. ↑ "LG Electronics G2 Powered by ANADIGICS 802.11ac WiFi FEIC" (Press release). ANADIGICS. 2013-08-15. Archived from the original on 2014-03-04.
  46. ↑ "First Look: LG G3 Teardown – uBreakiFix Blog". 2014-05-30. http://www.ubreakifix.com/blog/lg-g3-teardown. 
  47. ↑ "Amazon Fire Phone - 13MP Camera, 32GB - Shop Now". https://www.amazon.com/Fire_Phone_13MP-Camera_32GB/dp/B00EOE0WKQ. 
  48. ↑ "Amazon Fire Phone Teardown". 25 July 2014. https://www.ifixit.com/Teardown/Amazon+Fire+Phone+Teardown/27458#s67320. 
  49. ↑ "Samsung Note 4 & Alpha Teardown". 2014-09-10. http://www.techinsights.com/teardown.com/samsung-note-4-galaxy-alpha/. 
  50. ↑ "Exclusive Video Teardown: Apple iPhone 6 | Electronics360". 2014-09-23. http://electronics360.globalspec.com/article/4578/exclusive-video-teardown-apple-iphone-6. 
  51. ↑ "Nexus 6 Teardown". November 2014. https://www.ifixit.com/Teardown/Nexus+6+Teardown/32877. 
  52. ↑ "WiFi Performance, GNSS, Misc. - The Samsung Galaxy Note 4 Review". http://www.anandtech.com/show/8613/the-samsung-galaxy-note-4-review/9. 
  53. ↑ "Video Performance, WiFi Performance, and GNSS Performance - The Samsung Galaxy Note5 and Galaxy S6 edge+ Review". http://www.anandtech.com/show/9558/the-samsung-galaxy-note5-and-galaxy-s6-edge-review/8. 
  54. ↑ "Official IEEE 802.11 working group project timelines". January 26, 2017. http://grouper.ieee.org/groups/802/11/Reports/802.11_Timelines.htm. Retrieved 2017-02-12. 
  55. ↑ "Wi-Fi CERTIFIED n: Longer-Range, Faster-Throughput, Multimedia-Grade Wi-Fi® Networks". Wi-Fi Alliance. September 2009. http://www.wi-fi.org/register.php?file=wp_Wi-Fi_CERTIFIED_n_Industry.pdf. [|permanent dead link|dead link}}]
  56. ↑ 56.0 56.1 Banerji, Sourangsu; Chowdhury, Rahul Singha. "On IEEE 802.11: Wireless LAN Technology". arXiv:1307.2661.
  57. ↑ "The complete family of wireless LAN standards: 802.11 a, b, g, j, n". https://cdn.rohde-schwarz.com/pws/dl_downloads/dl_common_library/dl_news_from_rs/183/n183_lan.pdf. 
  58. ↑ Abdelgader, Abdeldime M.S.; Wu, Lenan (2014). "The Physical Layer of the IEEE 802.11p WAVE Communication Standard: The Specifications and Challenges". World Congress on Engineering and Computer Science. http://www.iaeng.org/publication/WCECS2014/WCECS2014_pp691-698.pdf. 
  59. ↑ 59.0 59.1 Wi-Fi Capacity Analysis for 802.11ac and 802.11n: Theory & Practice
  60. ↑ Belanger, Phil; Biba, Ken (2007-05-31). "802.11n Delivers Better Range". Wi-Fi Planet. http://www.wi-fiplanet.com/tutorials/article.php/3680781. 
  61. ↑ "IEEE 802.11ac: What Does it Mean for Test?". LitePoint. October 2013. http://litepoint.com/whitepaper/80211ac_Whitepaper.pdf. 
  62. ↑ "Wi-Fi 6 Routers: What You Can Buy Now (and Soon) | Tom's Guide". https://www.tomsguide.com/amp/us/best-wifi-6-routers,review-6115.html. 
  63. ↑ "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 3: Enhancements for Very High Throughput to Support Chinese Millimeter Wave Frequency Bands (60 GHz and 45 GHz)". IEEE Std 802.11aj-2018. April 2018. doi:10.1109/IEEESTD.2018.8345727. https://ieeexplore.ieee.org/document/8345727. 
  64. ↑ "802.11ad - WLAN at 60 GHz: A Technology Introduction". Rohde & Schwarz GmbH. November 21, 2013. p. 14. https://cdn.rohde-schwarz.com/pws/dl_downloads/dl_application/application_notes/1ma220/1MA220_2e_WLAN_11ad_WP.pdf. 
  65. ↑ "Connect802 - 802.11ac Discussion". https://www.connect802.com/802-11ac-discussion. 
  66. ↑ "Understanding IEEE 802.11ad Physical Layer and Measurement Challenges". https://www.keysight.com/upload/cmc_upload/All/22May2014Webcast.pdf. 
  67. ↑ "802.11aj Press Release". https://mentor.ieee.org/802.11/dcn/18/11-18-0698-01-0000-802-11aj-press-release.docx. 
  68. ↑ 68.0 68.1 Hong, Wei; He, Shiwen; Wang, Haiming; Yang, Guangqi; Huang, Yongming; Chen, Jixing; Zhou, Jianyi; Zhu, Xiaowei et al. (2018). "An Overview of China Millimeter-Wave Multiple Gigabit Wireless Local Area Network System". IEICE Transactions on Communications E101.B (2): 262-276. doi:10.1587/transcom.2017ISI0004. https://www.jstage.jst.go.jp/article/transcom/E101.B/2/E101.B_2017ISI0004/_pdf. 
  69. ↑ "IEEE 802.11ay: 1st real standard for Broadband Wireless Access (BWA) via mmWave – Technology Blog". https://techblog.comsoc.org/2018/06/15/ieee-802-11ay-1st-real-standard-for-broadband-wireless-access-bwa-via-mmwave/. 
  70. ↑ Sun, Rob; Xin, Yan; Aboul-Maged, Osama; Calcev, George; Wang, Lei; Au, Edward; Cariou, Laurent; Cordeiro, Carlos et al.. "P802.11 Wireless LANs". IEEE. pp. 2,3. Archived from the original. Error: If you specify |archiveurl=, you must also specify |archivedate=. https://web.archive.org/web/20171206183820/https://mentor.ieee.org/802.11/dcn/15/11-15-1074-00-00ay-11ay-functional-requirements.docx. Retrieved December 6, 2017. 
  71. ↑ 71.0 71.1 "802.11 Alternate PHYs A whitepaper by Ayman Mukaddam". https://www.cwnp.com/uploads/802-11alternatephyswhitepaper.pdf. 
  72. ↑ Lee, Wookbong; Kwak, Jin-Sam; Kafle, Padam; Tingleff, Jens; Yucek, Tevfik; Porat, Ron; Erceg, Vinko; Lan, Zhou et al. (2012-07-10). "TGaf PHY proposal". IEEE P802.11. https://mentor.ieee.org/802.11/dcn/12/11-12-0809-05-00af-tgaf-phy-proposal.docx. Retrieved 2013-12-29. 
  73. ↑ Sun, Weiping; Choi, Munhwan; Choi, Sunghyun (July 2013). "IEEE 802.11ah: A Long Range 802.11 WLAN at Sub 1 GHz". Journal of ICT Standardization 1 (1): 83–108. doi:10.13052/jicts2245-800X.115. http://riverpublishers.com/journal/journal_articles/RP_Journal_2245-800X_115.pdf. 

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