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802.11AX

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Page 1: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

802.11AX

Page 2: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

WiFi 802.11ax

3

802.11ax

7

: 802.11ax

27

,

28

28

29

32

32

( Wave 2 802.11ax ) 33

Page 3: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

3

WiFi 802.11ax

WiFi PC

. WiFi

1a: WiFi

Alliance 19 2018 , WiFi

50% .

1b: WiFi

180 WiFi 80

WiFi , 30

WiFi WiFi

. LTE ,

WiFi

. WiFi

.

2:

2018 1 (Android , MB)

WiFi 802.11 1 6

WiFi

IEEE(Institute of

Electrical and Electronics Engineers) . IEEE

WiFi Alliance

'WiFi' ,

.

WiFi WiFi .

'PHY' 802.11ac ,

2014 'Wave 1' 2016 'Wave 2'

. 802.11ac

2008 .

.

802.11ac Wave 2 IEEE

'802.11ax' 'PHY' .

2014 3 2018

, ' ' .

.

IEEE 2019

.

Page 4: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

4

802.11 WiFi Alliance

IEEE

. 802.11ax 'WiFi CERTIFIED

AX ' .

2018 2019

.

,

.

802.11ax

IEEE WiFi Alliance 802.11ac

WiFi WiFi

.

' '

' '

,

.

WiFi

.

.

.

, ,

.

. IEEE WiFi Alliance ,

.

, WiFi

.

PC WiFi

. (IoT)

WiFi

. 802.11ax

IoT

WiFi .

WiFi (WISP)

802.11ax

.

802.11ax 802.11n 802.11ac 'PHY'

.

IEEE WiFi Alliance

.

WiFi Alliance

' ' 2019

2018

.

3:

Page 5: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

5

802.11n

802.11ac 802.11ax

.

.

802.11ax 802.11ac 2

Wave .

Wave 1

Wave 2

. Wave 1( ) Wave 2

2

.

WiFi

'

' Aruba .

802.11n 802.11ac Wave 1 802.11ac Wave 2

.

2

WiFi .

802.11ax

,

. Aruba

.

WiFi

802.11ax

. 2.4GHz 5GHz

802.11ac .

802.11ac 5GHz

(2.4GHz 802.11n

), 802.11ax . ,

WiFi . 2.4GHz

, WiFi

IoT

.

WiFi

IEEE WiFi

Alliance 802.11ax

.

WiFi

. 60GHz 'WiGig' IEEE

WiFi Alliance , 2.4GHz 5GHz

WiFi

.

WiGig

802.11ax .

4:

Page 6: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

6

LTE 5G

.

4 5G

.

IoT, ,

,

.

5G 2G, 3G, 4G

.

5G 5G .

5G 802.11ax Multi-User MIMO,

, , OFDMA,

. ,

,

,

.

5G .

, 5G

WiFi 5G

. LTE/5G WiFi

.

3GPP WiFi Alliance

5G WiFi

.

WiFi

MAC PHY 802.11ax

. WiFi Alliance WiFi CERTIFIED

AX WiFi CERTIFIED AC WiFi CERTIFIED N

.

WiFi CERTIFIED Agile

Multiband .

Agile Multiband

.

.

WiFi ,

. WPA2 2018 WPA3

802.11ax

WPA3 .

802.11ax

5: 802.11ax (Wave 1, 2)

IEEE 802.11ax 50 , WiFi Alliance

. Wave 1 Wave 2

.

• OFDMA: OFDMA 802.11ax

, (

OFDMA )

. OFDMA OFDMA

,

.

OFDMA

.

.

• Multi-User MIMO:

802.11ac . 802.11ax Multi-User

MIMO .

802.11ax 주요 기능

OFDMA

* Multi-User MIMO

OFDM

*

*

(* 802.11ax )

Page 7: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

7

Multi-User MIMO 802.11ax

Wave 2 . OFDMA

.

• :

.

.

• : 802.11a/g 64-QAM , 802.11ac

256 QAM . 802.11ax

1024-QAM .

( SNR).

• OFDM , FFT OFDMA

.

.

• : .

.

.

• :

.

IoT 20MHz

.

• :

.

.

802.11ax

OFDMA

.

802.11ax

.

OFDM WiFi ,

.

( ) .

(FFT) , OFDM

. 802.11ax

4 OFDM 4 .

6: WiFi

Page 8: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

8

1: 802.11ac 802.11ax OFDM

7: OFDM

OFDMA( )

.

1 ( 2 )

2MHz .

.

. null

,

.

4 802.11ac

10% .

OFDM

.

,

.

.

.

.

(FFT) . 802.11

312.5kHz/64 FFT 20

.

OFDMA

OFDMA(Orthogonal Frequency Division Multiple Access) 802.11ax

MU-MIMO(Wave 1

) . OFDMA LTE

. RF

(RU)

.

Page 9: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

9

8: OFDM OFDMA

( OFDMA )

,

.

OFDMA OFDM

(802.11ax )

.

,

. OFDMA

1/2 2

.

.

802.11 CSMA/CA

.

, .

OFDMA

.

CSMA/CA . , 5

100Mbps 50

10Mbps .

802.11ax

. OFDMA

,

.

.

. OFDM

, OFDMA

.

, IoT 20MHz ( )

.

OFDMA QoS ,

. OFDM

OFDMA ' '

.

OFDMA .

802.11

.

.

, OFDMA

.

OFDMA

.

Page 10: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

10

OFDMA

. .

OFDMA

802.11ax

OFDMA . .

OFDMA

.

OFDMA

.

.

.

,

.

802.11ax 26

(2MHz) . 20MHz 26

9 , 9

.

IEEE ' '(RU)

. 26 RU-26 .

RU-26, RU-52, RU-106, RU-242, RU-484 RU-996 .

OFDMA , .

26

2 .

図 9 OFDMA 伝

Page 11: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

11

OFDM

.

,

.

DC

.

10: OFDMA

11: OFDMA

Page 12: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

12

OFDMA ,

OFDMA RU-N( : RU-26)

. RU 802.11ax

.

OFDMA

OFDMA

.

.

.

20MHz

.

IEEE ,

AP ,

.

,

WiFi

.

OFDMA RU

,

. OFDMA

.

2: OFDMA ,

12: OFDMA

Page 13: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

13

Multi-User MIMO

MU-MIMO 802.11ac(Wave 2)

.

AP .

13: Multi-User MIMO

MU-MIMO AP

, .

.

MU-MIMO AP

null

, AP

. MIMO

. 802.11ac

. 802.11ax

.

14:

Page 14: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

14

802.11ac MU-MIMO

.

, 4 AP

. 802.11ax 4

8 MU-MIMO .

802.11ax

.

.

ACK TCP/IP

.

MU-MIMO 802.11ax Wave 2 .

MU-MIMO MU-MIMO OFDMA

MU-MIMO OFDMA MU-MIMO

Wave 2 . Wave 1 OFDMA

MU-MIMO AP

.

802.11

,

. PHY

.

15: -

16:

Page 15: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

15

802.11ax ' '

. 802.11n

802.11

. CSMA/CA 802.11ax

.

RL-SIG 802.11g

802.11n 802.11ax

. ' ' RL-SIG

20MHz .

802.11ax ('HE' 802.11ax IEEE

802.11 'High Efficiency'( ) )

' '

,

802.11ax OFDMA .

HE-SIG-A , , BSS ,

MCS , SS(Spatial Stream) ,

. ,

, 802.11ax ' '

.

HE-SIG-B .

. OFDMA HE-SIG-B

. .

HE-STF

,

HE-LTF MIMO

.

- ,

802.11ax

.

17: ,

, OFDMA

. AP

, MCS . CSMA/CA

802.11ax

.

(FEC) .

AP ( ),

. ' '

MCS .

, LDPC BCC

. 802.11ax

. (BCC( ) 802.11

. BCC

LDPC( ) .)

Page 16: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

16

. 802.11

.

.

AP .

0, 4, 8, 12, 16usec .

802.11n , WiFi

.

18: MAC

MAC

.

.

A-MSDU MAC

.

.

A-MSDU A-MPDU

.

802.11ax

.

MU-MIMO OFDMA .

OFDMA

.

802.11ax

MU-MIMO OFDMA .

AP

, 802.11ax .

.

AP

.

AP MU-MIMO OFDMA

' '

, AP

.

.

,

HE-SIG-B .

Page 17: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

17

.

HE-SIG-B . AP

,

.

OFDMA RU

( : 26 RUx18 242 RUx2).

.

. AP

SS(Spatial Stream) , MCS,

.

802.11ax 20MHz HE-

SIG-B ,

. AP 80MHz 4

HE-SIG-B 20MHz .

HE-SIG-B

.

20

.

.

AP

.

MU-BAR(

), BSRP( ), BQRP(

) .

20:

19:

Page 18: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

18

21:

BlockAck MU , MU

BlockAck 4.096

TXOP ,

. ACK

.

(802.11ac Multi-User MIMO

MU

. 802.11ax 802.11ac

.)

. AP

.

MU-MIMO OFDMA RU ,

22:

Page 19: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

19

.

.

.

• OFDMA RU

• SS(Spatial Stream)

• MCS

• STBC

• AP ( AP

, RSSI ,

)

• ( MU-MIMO Wave 2

802.11ax .)

.

• :

.

• BRP( ):

.

.

.

• MU-BAR( ):

BlockAck .

.

• MU-RTS( ):

RTS-CTS , .

• BSRP( ): AP

.

• BQRP( ): AP

20MHz RF .

• GCR MU-BAR(

): AP

.

AP

.

23:

Page 20: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

20

OFDMA RU

MU-MIMO , MCS

.

RU MIMO

.

AP

. BA( )

802.11ax ' STA

' 802.11ax .

802.11ax AP

OFDMA MU-MIMO

802.11 AP .

.

802.11ac MU-MIMO AP

MU-MIMO

.

.

802.11ax .

(AP )

,

.

OFDMA .

AP , MU-MIMO OFDMA

( 802.11ax ) ,

.

. MU-MIMO 802.11ax

Wave 2 OFDMA 802.11ax

Wave .

AP ,

,

.

,

. 802.11ax AP

.

24: AP

Page 21: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

21

25: -

AP

MU-MIMO(Wave 1 )

OFDMA

.

ACK ACK

AP

.

802.11ax AP

WiFi (TDD +

TDM/TDMA + OFDMA)

. AP

,

802.11

.

OFDMA

.

8

802.11ac

8

. 4 802.11ac

4

.

802.11ax 8 5G

' MIMO' 8

802.11ax . MU-MIMO

MRC,

AP 1~2

.

AP ,

. 4

AP .

.

2 SS(Spatial Stream)

.

AP . ,

.

802.11

, 802.11ax 802.11ac

1024-QAM .

Page 22: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

22

26: 1024-QAM

256-QAM 1024-QAM OFDM

8 10

25% .

.

256-QAM 16 64-QAM

8 ( ) 32

.

80MHz, 1024-QAM 5/6, MCS-11

-

45dBm .

802.11ax (160MHz

80MHz 2 ).

20, 40, 80MHz

(Mbps, Short Guard Interval).

27: 802.11ax

Page 23: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

23

3: 802.11ax (Mbps, Short Guard Interval)

(SS 8 MCS 11 160MHz 9607.8Mbps .)

(Mbps, Short Guard Interval).

4: 802.11ax (Mbps, Short Guard Interval)

802.11ax

AP .

. AP AP

.

, AP

RF .

AP SINR(

) . MCS

SINR MCS

.

Page 24: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

24

OFDMA RU

RU

.

' ' AP

(EIRP) . 20MHz

EIRP

.

AP

. Wave 1

OFDMA Wave 2 MU-

MIMO .

AP AP SINR

.

. AP

SS(Spatial Stream) , MCS, OFDMA RU

. AP OFDMA

.

.

802.11ax

802.11ax

4 . IoT

.

802.11 .

TWT('Target Wait Time')

. (TWT , IoT

802.11ah , 802.11ah

WiFi .)

TWT .

' PS' WiFi

802.11b . AP

,

( . AP

) AP

DTIM(Delivery Traffic Information Map) .

DTIM AP

.

PS

. DTIM

.

802.11e Voice-over-WiFi IEEE

20

.

(U-APSD)

. PS

AP

.

.

28: 802.11ax

Page 25: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

25

29: 802.11ax TWT

802.11ax TWT

.

AP

.

( , )

. AP

( )

. AP

.

TWT

.

AP

. AP OFDMA

.

.

TWT

.

.

802.11ax . TWT IoT

.

• / AP

. .

, ' '

.

• 20MHz

. WiFi

.

• AP

MCS . AP

.

• BSS

. Wave 2 ( ).

• ' ' ' '

.

.

IoT

.

Page 26: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

26

20MHz

802.11ax IoT

.

WiFi

, IoT

WiFi Bluetooth Zigbee

. WiFi

.

IoT ( : WiFi

) 802.11

.

WiFi

.

802.11ax

. TWT

WiFi IoT .

WiFi

.

802.11ax

. IEEE

WiFi

.

20MHz 2.4GHz 5GHz

, 20MHz

. OFDMA 802.11ax

. 20MHz

IoT

.

(WiFi Alliance 2.4GHz

20MHz 5GHz 20, 40, 80MHz

. 20MHz .)

30: 20MHz

Page 27: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

27

: 802.11ax

31:

802.11ax

.

,

.

.

,

802.11ax

Multi-User MIMO .

, OFDMA

.

BSS

.

OFDMA

.

, :

'IoT' 802.11ax

WiFi

. , TWT, 20MHz ,

OFDMA IoT

.

IoT ,

WiFi . 802.11ax

, .

OFDMA

IoT

.

,

,

WLAN , WiFi

802.11ax

.

5G

' '(FWA) . ,

. 802.11ax

WiFi .

FWA 802.11ac

' 5G' . 802.11ax

WiFi . 802.11ax

.

802.11ax

802.11ax

WiFi

Page 28: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

28

,

WiFi .

15

802.11g 802.11ax .

802.11n 'greenfield'

'greenfield'

.

' ' AP

.

802.11ax Wave 1 Wave 2

802.11ax Wave 1 Wave 2

.

(2018 ) .

6: 802.11ax Wave 1 Wave 2

802.11n 802.11ac WLAN 802.11ax

.

AP ,

.

.

802.11ax AP

. AP 1Gbps ,

2.5Gbps 5Gbps

.

Wave 2 2020

Wave 2 .

802.11ax WiFi Alliance

2018 WiFi Alliance 'WiFi CERTIFIED AX'

4 (

2019 ).

• Wave 1 AP:

.

• Wave 1 : , PC

.

5: 802.11ax :

Page 29: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

29

• AP: 802.11ac AP

802.11ax .

. AP 'Agile Multiband'

OFDMA MIMO

AP MCS5

. AP

2.4GHz

20, 40, 80MHz .

• 20MHz : IoT

.

.

802.11ax

.

WiFi

.

.

.

.

. 100

40% .

Aruba 802.11ax

. ( SS 2

.)

32: (BSS)

Page 30: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

30

33: (BSS)

.

.

802.11ax

. Aruba

.

좁은 채널(OFDMA)

34:

Page 31: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

31

AP WLAN 40MHz

80MHz 20MHz

.

BSS

, AP

. OFDMA

,

.

. OFDMA

OFDMA .

MIMO

. 802.11n MIMO

, 802.11ac Wave 2 Multi-User

MIMO , 802.11ax OFDMA

.

MU-MIMO SNR

OFDMA

.

20MHz OFDMA TWT

.

WiFi BLE(Bluetooth Low-Energy)

.

802.11 , bps/Hz

LTE 5G ,

Hz

.

, WiFi

. MIMO .

35: 802.11 , bps/Hz

Page 32: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

32

RF 802.11ac

. FCC 2014

5150~5250MHz

5600~5650MHz

. DFS .

WiFi WiFi

.

36: 802.11ax 5GHz ( )

WiFi

. 802.11ax WiFi

, 2019 2024 5

802.11 .

WiFi 80 30

. PC WiFi

WiFi ,

,

.

WiFi

.

.

(IoT)

.

IoT , ,

.

WiFi ' ah'(IEEE

802.11ah ) .

. 'ah'

. WiFi IoT

. 802.11ax IoT ,

WiFi

.

. FCC

CBRS('citizens broadband radio service')

, 3.5GHz

. CBRS

.

LTE 5G ,

WiFi .

Page 33: 802 - ArubaWiFi 802.11ax WiFi PC . WiFi 1a: WiFi Alliance 19 2018 , WiFi 50% . 1b: WiFi 180 WiFi 80 WiFi , 30 WiFi WiFi IEEE(Institute of . LTE , WiFi Alliance WiFi . WiFi . 2014 2:

백서 802.11A

X

33

.

5G ,

, ,

. WiFi

2.4 5GHz .

. WiFi

2.4GHz ' '

. 2017~2019

6GHz

.

.

WiFi

.

WiFi

5G

. LTE

5G ,

, ,

WiFi

. 5G WiFi 802.11ax

, WiFi

. WiFi 5G

.

WiFi

. 20 WiFi

. WiFi

802.11ax ' '

WiFi

.

BSS ,

WiFi

.

, ,

.

OFDMA IoT

TWT

. 20MHz

.

,

WiFi

. 5G

4G 5G WiFi

.

?

WiFi

. 802.11ax WiFi

.

WiFi

.

( Wave 2 802.11ax )

802.11ax 802.11ac MIMO

802.11ac MIMO 802.11ax

. .

802.11ax Wave 1 MU-MIMO ,

Wave 2 MU-MIMO .

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백서 802.11A

X

34

37: SU MIMO ,

802.11ax AP .

802.11ac .

38:

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백서 802.11A

X

35

802.11ax Wave 2 - MU-MIMO

Multi-User MIMO . .

39: Uplink multi-user MIMO transmission

Multi-User MIMO

AP

.

AP

.

OFDMA

Wave 2 .

802.11ax Wave 2 - MU-MIMO OFDMA

MU-MIMO OFDMA

,

Wave 2 .

802.11ax Wave 2 -

WiFi CSMA/CA

. AP

.

WiFi

. CSMA/CA WiFi .

. ,

(BSS

, ) .

WiFi

CSMA/CA . WiFi ' '

,

.

BSS CSMA/CA

.

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백서 802.11A

X

36

40: BSS :

.

. AP BSS

' '

. AP

RF

AP

. 80MHz (802.11ac

) 5GHz

.

AP , AP

. CSMA/CA

AP

AP

.

BSS ' BSS' ' BSS'

CSMA/CA . 2

2 NAV(

)

.

. SINR(

)

.

.

WiFi

.

802.11ax 'BSS '

, ' ' AP

. 802.11ax

.

802.11ax Wave 2 -

802.11ax

.

.

41: BSS :

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백서 802.11A

X

37

42:

HE-SIG-A .

SS(Spatial Stream)

.

(1.6usec 3.2usec)

.

.

• 10MHz (106-RU )

• , (

)

• DCM(

). 802.11ax .

Wave 2 .

-

3GPP 3rd Generation Partnership Project

AC

ADI

A-MSDU MAC

A-MPDU

AP

BAR

BCC

BQRP

BRP

BSRP

CP

CSI

CSMA/CA ( )

CTS Clear To Send

DCM

DFS Dynamic Frequency Selection

DL

EIRP

ER

FCC

FDD

FFT

GCR

GI Guard Interval

HE

HT High Throughput

HEW

LTF

MIMO ,

NDP Null

OFDM

OFDMA

L-

LDPC

MAC Medium Access Control

MCS

MU

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백서 802.11A

X

3388

RF

RSSI

RTS

RU

SINR

SNR

STA

STF

STS Space-Time

STBC Space-Time Block Coding

SU

TCP/IP /

TDD

NAV TDM

NDP Null TDMA

NDPA Null UL

PE VHT Very High Throughput

PLCP Physical Layer Convergence Protocol WiFi

PPDU PLCP WISP

3333 SCOTT BLVD | SANTA CLARA, CA 95054

1.844.473.2782 | T: 1.408.227.4500 | FAX: 1.408.227.4550 | [email protected]

www.arubanetworks.com WP_802.11ax_053018

-

• IEEE 15/0132r15 Specification Framework for TGax ,

2016 5

• IEEE P802.11ax /D2.0 Draft Standard for Information

technology , 2017 11

• WiFi Alliance Marketing Requirements Document for

Interoperability Testing of WiFi ax , version 1.1, 2017

11 ( )

• WiFi Alliance Marketing Requirements Document for

Interoperability Testing of Approved ax Products, Draft

Appendix: ax Feature Descriptions , version 1.4, 2017

( )