báo cáo wireless phần 2 doc

Khung MSDU 3.2.6 Các không gian khung Inter Inter Frame Space SIFS - Short Inter Frame Space micrô - giây... Adva nced Encryption Standard and Offset Codebook 2... r, Telnet, Sendmail,

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Hình 4.4 Khung MSDU

3.2.6 Các không gian khung Inter (Inter Frame Space)

SIFS - Short Inter Frame Space

micrô - giây

PIFS - Point Cooordination IFS

DIFS - Distributed IFS

EIFS - Extended IFS

n

i

n

min (n,10).

Ad - hoc).

2

3.4 Roaming

3.6

3.7

3.8

3.8

Synch

SFD

3.8

thúc gói,

3.8

3.8

b ToDS

c FromDS

d More Fragments

e Retry

f

g

h WEP

i

3.8

3.8

3.8

4.8.3.5 CRC

3.9

3.9

3.9

)

2

(Adva nced Encryption Standard and Offset Codebook)

2

3

4.1

4.1.1

C

char first_name [20];

r, Telnet, Sendmail, ARP, finger

WLAN

4.1.2

4.2

4.2

bps)

4.2

4.2

Ad Hoc

Ad Hoc

Hình 4

4.2

4.3

p

4.4

Hình 4

4.4

4.4

4.4

Hình 4

4.4

Hình 4

4.4.4 WEP

keystream

seed

keystream

4.4.5 WPA (Wi-Fi Protected Access)

Temporal Key Integrity Protocol) W