beautypg.com

Ip based network architecture – Siemens IEEE802.11 User Manual

Page 9

background image

WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt

Page 9

© Siemens, 2002

link

phy

link

phy

link

phy

link

phy

link

phy

link

phy

link

phy

link

phy

tcp

http

www

tcp

http

www

IP based network architecture

ip

ip

ip

ip

ip

ip

ip

ip

N-DATA.request

N-DATA.indication

N-DATA

N-DATA

N-DATA

ip = connectionless,

non-reliable,
end-to-end,
packet-oriented
data delivery service

193.175.26.92

131.34.3.35

Version Length Type of Service

Total Length

Identification

)/$*6

Fragment offset

Time-to-live

Protocol

Header checksum

Source IP Address (32bit)

Destination IP Address (32 bit)

Options (if any)

1

2

3

4

Data

0

0

R

T

D

D: Delay
T: Throughput
R: Reliability

“1”= precedent

TOS

(pre-diffserv)