Fujitsu B3020 User Manual download pdf (Page 97)

LifeBook B Series Notebook - Appendix

Before Using the Wireless LAN

This manual describes the procedures required to prop-

erly setup and configure the integrated Wireless LAN

Mini-PCI device (referred to as "WLAN device" in the

rest of the manual). Before using the WLAN device, read

this manual carefully to ensure it's correct operation.

Keep this manual in a safe place for future reference.

Wireless LAN Devices Covered by this Document

This document is applicable to systems containing one

of the following two devices. Most of the procedures are

identical. Sections that differ between the two devices

have been noted in the text:

■

Intel PRO/Wireless 2200BG Mini-PCI wireless

network card

■

Atheros AR5002x or AR5002g Mini-PCI wireless

network card

Characteristics of the WLAN Device

■

The WLAN device is a Mini-PCI card attached to the

mainboard of the mobile computer.

■

It is a dual-band radio that operates in two license-free

RF bands, therefore eliminating the need to procure an

FCC license to operate. It operates in the 2.4GHz

Industrial, Scientific, and Medical (ISM) RF band.

Additionally, the Atheros device operates in the lower

and middle bands of the 5GHz Unlicensed National

Information Infrastructure (UNII) bands.

■

The Atheros WLAN is capable of three operating

modes, IEEE802.11a, IEEE802.11b and IEEE802.11g,

wireless LAN standards governed by the IEEE (Insti-

tute of Electronics and Electrical Engineers). The Intel

WLAN is capable of two operating modes,

IEEE802.11b and IEEE802.11g.

■

Encoding of data is modulated using Direct Sequence

Spread Spectrum (DSSS) and Complementary Code

Keying (CCK) when the WLAN device is operating in

IEEE 802.11b mode and Orthogonal Frequency Divi-

sion Multiplexing (OFDM) when operating in

IEEE802.11a or IEEE802.11g mode.

■

The WLAN device is Wi-Fi certified and operates at

the maximum data transfer rate of 54 Mbps in

IEEE802.11a or IEEE802.11g mode and 11 Mbps in

IEEE802.11b mode.

■

The maximum communication range indoors is

approximately 80 feet (25 meters). However, that

range will increase or decrease depending on factors

such as number of walls, reflective material, or inter-

ference from external RF sources.

■

The WLAN device supports the following encryption

methods - WEP, TKIP, and AES encryption.

WIRELESS LAN MODES USING THIS DEVICE

Ad Hoc Mode

(See Figure A-1)

"Ad Hoc Mode" refers to a wireless network architecture

where wireless network connectivity between multiple

computers is established without a central wireless

network device, typically known as Access Point(s).

Connectivity is accomplished using only client devices in

a peer-to-peer fashion. That is why Ad Hoc networks are

also known as peer-to-peer networks. Ad Hoc networks

are an easy and inexpensive method for establishing

network connectivity between multiple computers.

Ad Hoc mode requires that the SSID, network authenti-

cation, and encryption key settings are identically

configured on all computers in the Ad Hoc network.

Figure A-1. Ad Hoc Mode Network

B Series.book Page 90 Friday, April 23, 2004 11:41 AM

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