FRITZ WLAN-7390 Router Manual PDF (Setup & Configuration Guide)

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More about WLAN

131

2

More about WLAN

WLAN (Wireless Local Area Network) is a radio technology that allows

networks and access to the Internet to be provided without cable con-

nections. This allows multiple users to share one wireless Internet con-

nection.

2.1

Standards

The WLAN standards IEEE 802.11a, IEEE 802.11b,

IEEE 802.11g, IEEE 802.11n and IEEE 802.11i were devel-

oped by the Institute of Electrical and Electronic Engineers

(IEEE).

The standards IEEE 802.11a, IEEE 802.11b, IEEE 802.11g

and IEEE 802.11n define the transmission rate within a

wireless LAN. The IEEE 802.11i standard is a security stan-

dard.

Standards for the Throughput Rate

Data Throughput

The FRITZ!Box supports your choice of the standards

IEEE 802.11a, IEEE 802.11b, IEEE 802.11g and

IEEE 802.11n. WLAN adapters based on one or more of

the standards listed can be used for WLAN connections

with the FRITZ!Box.

The standards are intended for different frequency bands.

The throughputs listed differentiate between gross and

net transmission rates. The net speed describes the trans-

mission rate of the user data.

Standard

Frequency Band

Gross Data Throughput up

to

Net Data Throughput up to

802.11a

5 GHz

54 Mbit/s

25 Mbit/s

802.11b

2.4 GHz

11 Mbit/s

5 Mbit/s

802.11g

2.4 GHz

54 Mbit/s

25 Mbit/s

802.11n

2.4 / 5 GHz

300 Mbit/s

100 Mbit/s

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132

Standards for the Throughput Rate

Range

The range within a WLAN is highly dependent on the fol-

lowing factors:

•

the WLAN adapter used

•

the structural conditions

•

the amount of radio traffic on the same frequency

band. Other wireless networks may be active, but al-

so microwave ovens, baby monitors, game consoles,

garage door openers, audio-video bridges, or Blue-

tooth transmitters (for instance, in mobile tele-

phones.

FRITZ!WLAN

Repeater N/G

To increase the WLAN range, especially under difficult or

strongly-shielding structural conditions, the FRITZ!WLAN

Repeater N/G, available as an accessory from AVM, can be

used in combination with the FRITZ!Box. It is especially

easy to install and can be operated at any 230-V power

outlet.

Everything you need to know about the FRITZ!WLAN Re-

peater N/G can be found at the web address:

www.avm.de/en/Produkte/FRITZ_WLAN/FRITZ_WLAN_

Repeater_N_G

IEEE 802.11a

Because this standard works exclusively in the seldom

used 5-GHz range, it offers the opportunity to transmit da-

ta relatively free of interference from external influences.

WLAN adapters that support 802.11a are much less com-

mon that devices that work in accordance with the

802.11b/g standard.

IEEE 802.11b

With a maximum throughput rate of 11 Mbit/s, this is the

oldest standard for radio networks. Older WLAN adapters

of the first generation can communicate with the

FRITZ!Box using 802.11b. However, if the WLAN adapter

supports newer standards such as 802.11g, the latest

standard should be used.

IEEE 802.11g

This is currently the most common WLAN standard. It com-

municates with a maximum of 54 Mbit/s gross in the 2.4-

GHz frequency range (ISM) and guarantees broad compat-

ibility with many WLAN devices.

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Setting the Right Standard in the FRITZ!Box

133

However, due to heavy use of the 2.4-GHz range, interfer-

ence is more common than in the less-used 5-GHz range.

IEEE 802.11n

This standard allows for high throughput rates and rang-

es. The FRITZ!Box supports 802.11n in the 2.4-GHz fre-

quency band, or, if desired, also in the 5-GHz frequency

band. Modulation processes and antenna techniques like

MIMO (Multiple Input, Multiple Output) use the entire fre-

quency band available more effectively than the older

standards.

Thanks to compatibility with the 802.11g standard, you

can also continue to use older WLAN adapters.

Setting the Right Standard in the FRITZ!Box

The throughput rate that can be achieved in your WLAN ra-

dio network depends on the WLAN standards used by the

integrated WLAN adapters. These WLAN standards must

also be set in the FRITZ!Box. Proceed as follows to check

which WLAN standards are set and change them if need-

ed:

1.

Start a web browser.

2.

Open the FRITZ!Box user interface by entering

fritz.box

.

3.

Make sure that the expert mode is enabled in the

“System / Expert Mode” menu.

4.

Open “WLAN / Radio Channel”.

5.

Enable the “Adjust radio channel settings” option.

6.

Select the desired standard in the “WLAN Standard”

list.

The use of the 802.11n standard—and thus the availabili-

ty of higher throughput rates—is possible only if the

WLAN connection is secured using the WPA2 security

mechanism (AES-CCMP).

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134

Setting the Right Standard in the FRITZ!Box

•

Your FRITZ!Box Fon WLAN 7390 can make two WLAN

networks available simultaneously for data transmis-

sion. One of the WLAN radio networks works in the

2.4-GHz frequency band, and the other in the 5-GHz

frequency band. This means the FRITZ!Box can be im-

plemented as an especially flexible access point for

the various WLAN adapters and applications in your

network.

•

Set the standards of the two WLAN radio networks in

the FRITZ!Box such that they are compatible with all

of the WLAN adapters used in the wireless network.

Make a note of which standards the WLAN adapters in

your network are compatible with and then adjust the

FRITZ!Box settings according to the following information:

•

Your radio network integrates only WLAN adapters

that are compatible with one or both of the following

standards:

–

802.11n

–

802.11g

In this case set the WLAN standard for the 2.4-GHz

frequency band to:

“802.11n+g”.

If the 5-GHz frequency band is not used, in order to

reduce energy consumption you can disable it in the

FRITZ!Box without losing WLAN connections.

•

Your radio network integrates only WLAN adapters

that are compatible with one or both of the following

standards:

–

802.11b

Note the following for the configuration of this setting:

Page 135 / 197

Setting the Right Standard in the FRITZ!Box

135

–

802.11g

In this case set the WLAN standard for the 2.4-GHz

frequency band to:

“802.11b+g”.

If the 5-GHz frequency band is not used, in order to

reduce energy consumption you can disable it in the

FRITZ!Box without losing WLAN connections.

•

Your radio network integrates only WLAN adapters

that are compatible with one or both of the following

standards:

–

802.11n

–

802.11g

–

802.11b

In this case set the WLAN standard for the 2.4-GHz

frequency band to:

“802.11n+g+b”.

If the 5-GHz frequency band is not used, in order to

reduce energy consumption you can disable it in the

FRITZ!Box without losing WLAN connections.

•

Your radio network integrates only WLAN adapters

that are compatible with one or both of the following

standards:

–

802.11n

–

802.11a

As long as your WLAN adapters support the full N

standard, to reduce energy consumption you can dis-

able the 2.4-GHz frequency band in the FRITZ!Box

without losing any WLAN connections. Then you will

work only in the 5-GHz frequency band, for which no

additional settings have to be configured in the

FRITZ!Box.

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