= I v Network Layer - YEE Tcpoverwireless Last 1 mile . . . - - PDF document

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= I v Network Layer - YEE Tcpoverwireless Last 1 mile . . . - - PDF document

Nov 28, 2023 102 likes •171 views

TCP complete Oct 15 : over wireless TCP - RED TCP - to end bottleneck bandwidth End - estimation ( plat pair ) = I v Network Layer - YEE Tcpoverwireless Last 1 mile . . . BER ( Bit error rate ) - . of hit error much big prob

slide-1
SLIDE 1

Oct 15 : TCP complete

  • TCP
  • ver wireless
  • TCP

RED

  • End

to end

bottleneck bandwidth

estimation (plat pair)

I

=

v

Network Layer

slide-2
SLIDE 2

③ Tcpoverwireless

YEE

Last mile

1¥

. . .

BER (Bit error rate)

  • =

prob

. of hit error much big

in wireless than wired . Wireless

  • I

bit

in error every 1045¥

10-5

wired

n

yo

  • 12

Packet

Drop

freaks

congestion

d

'

wireless link

( Router g fined up)

failure

+response

I response

cut back

CW

Just retx

.
slide-3
SLIDE 3

Problem

is

→ TOP doesn't

know The

treason for packet drop

.
  • Eit

7.EU#i

  • :i÷÷÷÷

:

N

retransmission

all N

retx failing

is very

low prob .

Be

Cross layer

approaches

.

→ TCP asking Link

layer for hints .

slide-4
SLIDE 4

Bank

split T

  • p
. IIt3④

Power

⑤

.
  • utage.q

,

ap¥#

✓ A&t

A- 5

Link layer

is

SNOOPING

into

tntngighaicks finning } 's:p .

⑦ TCP

RED ( Random

Dnpntopmaedkemt when

is

Early

beginningtofiuup.my#.Dop).

Cw

→ increasing

.

RED

is

a

nice way

kiosk

, .⇐*m .gg#nEerkIo9ee:

TCP Transmitter

slide-5
SLIDE 5

that Q is filling up ,

so

cut back

  • n

CW ( via

Fast Recovery)

.

I

note :

Does not violate layering ,

③

Packet Pair

  • T

s

Bottleneck

bandwidth

.

R,

100
  • Rl
20

R2

30

R3

40
slide-6
SLIDE 6

W

W

T

= Packetsize

Bottleneck

B/w

¥

danger

done

.