Errata

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The errata list is a list of errors and their corrections that were found after the product was released.

The following errata were submitted by our customers and have not yet been approved or disproved by the author or editor. They solely represent the opinion of the customer.

Color Key: Serious Technical Mistake Minor Technical Mistake Language or formatting error Typo Question



Version Location Description Submitted By
Printed Page 9
Top

IEEE
first ical
then onics

 Anonymous 
Printed Page 19
Paragraphs following heading 'Multi-BSS environments ..'

Paragraph 1
"An AP could have connect users to .."

Paragraph 2
"Within the AP, each SSIDs .."

Paragraph 3
"(... the internal network is probably protected by authentication prevent
unauthorized use.)"

 Anonymous 
Printed Page 62
Paragraph 2

Sentence is incoherent: "Speed negotiation is particu-larly that are available to
stations."

 Anonymous 
Printed Page 75
3rd paragraph

"Frames from the distribution system have the ToDS bit set, ..."
might be changed to
Frames to the distribution system have the ToDS bit set, ..."

 Anonymous 
Printed Page 94
Figure 4-33

Note that the existing unconfirmed errata for page 95 should be removed if this one is accepted. Changing the bits in the figure means that the exisiting text can be kept as printed.

The bits in the section labeled "2Mps, mandatory" are:
0 1 0 0 0 0 0
should be:
0 0 1 0 0 0 0

 Gary Kato 
Printed Page 95
1st paragraph

"2-Mbps" should be changed to "1-Mbps" because the first example of Supported
rate is "0000010" in hex, corresponding rate of this binary value is "2 Mbps"
as in Table 4-8.

 Anonymous 
Printed Page 104
figure 4-50

The "RSN Capabilities" field is displayed bitwise below the RSN Information Element, however the expansion incorrectly
points to the "Authentication Suite" field instead of the "RSN Capabilities" field.

 Anonymous 
Printed Page 104
Figure 4-50

The Version field in the RSN information element incorrectly shows 1 (byte) above the field instead of 2(bytes).

Anonymous 
Printed Page 162
1st paragraph

The first step of the CCMP data transmission procedure is a direct cut and paste
from the first step of the TKIP data transmission procedure on page 154 and has
not been changed to indicate any differences CCMP has when compared to WEP and/or TKIP.

 Anonymous 
Printed Page 196
Figure 8-18 and line 1

Figure 8-18:
Switch location of "Frame to 2,3, and 4" and "Frame to 1"

line 1:
change to : remain active until the conclusion of the next ATIM window...

 Anonymous 
Printed Page 210
Figure 8-24

Action Value should be 1

 Anonymous 
Printed Page 213
Figure 8-26

The channel switch announcement (CSA) frame is shown to include a dialog token when in fact this is not the case. A dialog token is used for the other Spectrum Management action frames, but according to section 7.4.1.5 of the IEEE STD 802.11 - 2007, CSA frames do not use dialog tokens.

Robert van Coppenhagen 
Printed Page 235
fórmula para calcular el 'path loss'

En el libro se da como fórmula para calcular el 'free-space loss':

FLSB= 32.5 + 20·log F + log d

Sin embargo, en la documentación que he manejado, parece que la fórmula correcta
sería:

FLSB= 32.5 + 20·log F + 20·log d

La fórmula también aparece en la página 446

 Anonymous 
Printed Page 251
Figure 11-10

picture of receiver has 1st block label PLCP. other authors put GFSK demodulator
there.

 Anonymous 
Printed Page 251
bottom

PCLP = PLCP

 Anonymous 
Printed Page 281
2nd paragraph, 4th sentence

"...as a strong opdpresence and a relatively smaller..."
should read
"...as a strong presence and a relatively smaller..."

 Anonymous 
Printed Page 301
figure 14-1 b) RTS-CTS protection mechanism

full protection mechanism in ERP OFDM PHY RTS-CTS communication is used beatwean
sender station and receiver station is it not?

on figure 14-1 b) IEEE 802.11g station sends RTS to 802.11b which responds with CTS
msg. then g station send OFDM data frame to someone.... WHY DOES 802.11b RESPOND on
RTS whith CTS , IT CANT BE RECEIVER BECAUSE IT DOES NOT understand OFDM ?

 Anonymous 
Printed Page 305
figure 14-3

Preamble + Signal field = Rate Res Length Parity Tail
or
Signal field = Rate Res Length Parity Tail?

the 1st line which joins physical and logical PDU should be moved to the end of
preamble

 Anonymous 
Printed Page 305
figure 14-4

modulation for PLCP header PBPSK and DQRSK ?? It should be DBPSK DQPSK?

 Anonymous 
Printed Page 309
figure 14-7

on the picture is txt : short: 48 bits @ 1 Mbps DBPSK
i think it should be : short: 48 bits @ 2 Mbps DQPSK

 Anonymous 
Printed Page 309
figure 14-7

Long traning durration 8 MS (makro ?)
shuld be :
Long traning durration 8 mikroS


 Anonymous 
Printed Page 319
Data rate formula

The data rate formula start with the constant 0.0675 where is should be 0.675.
The 0 is an error resulting in 10x lower data rate.

 Anonymous 
Printed Page 465
Figure 21-8

Should User Y's "bcast 7" be "bcast 1"?

 Anonymous