Fujitsu Lifebook P7120, Руководство пользователя

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L i f e B o o k P 7 0 0 0 S e r i e s N o t e b o o k - S e c t i o n F i v e
Before Using the Wireless LAN
This manual describes the procedures required to prop-
erly set up and configure the
optional integrated Wire-
less LAN Mini-PCI device (referred to as "WLAN”).
Before using the WLAN device, read this manual care-
fully 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 devices. Most of the procedures are
identical. Sections that differ between the devices have
been noted in the text:
■
Intel PRO/Wireless 2915ABG (WM3B2915ABG)
Network Connections (Tri-mode 802.11a/b/g): Avail-
able on LifeBook P7010 notebook model
■
Atheros AR5002X (WLL4070) Mini-PCI wireless
network card (802.11a+b/g): Available on LifeBook
P7010D notebook model
Characteristics of the WLAN Device
■
The WLAN device is a Mini-PCI card attached to the
main board of the mobile computer.
■
The WLAN devices operate in license-free RF bands,
therefore eliminating the need to procure an FCC
license to operate. The WLAN devices operate in the
2.4GHz Industrial, Scientific, and Medical (ISM) RF
band and in the lower and middle bands of the 5GHz
Unlicensed National Information Infrastructure
(UNII) bands.
■
The WLAN devices are capable of three operating
modes, IEEE802.11a, 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, CKIP, TKIP, and AES encryption.
WIRELESS LAN MODES USING THIS DEVICE
Ad Hoc Mode
(See Figure 5-1)
"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.
Prior to using the wireless LAN device, be
sure to run the Click Me! utility, as detailed
in “Installing Click Me!” on page 26.
Figure 5-1. Ad Hoc Mode Network
P7120.book Page 48 Monday, October 10, 2005 4:38 PM