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Fujitsu LifeBook T4220 Tablet PC Manual

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LifeBook T4200 Series Tablet PC - Appendix A
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® Wireless WiFi Link 4965AGN (802.11a/g/n)
■
Atheros® AR5006EXS (AR5BXB6) Mini-Card
Wireless network card (802.11a+b/g)
Characteristics of the WLAN Device
■
The WLAN device is a Mini-PCI card attached to the
main board of the mobile computer.
■
The WLAN device operates in license-free RF bands,
eliminating the need to procure an FCC operating
license. The WLAN operates in the 2.4GHz Industrial,
Scientific, and Medical (ISM) RF band and the lower,
middle, and upper bands of the 5GHz Unlicensed
National Information Infrastructure (UNII) bands.
■
The Atheros® AR5006EXS (AR5BXB6) Mini-Card
Wireless device is capable of three operating modes,
IEEE802.11a, IEEE802.11b and IEEE802.11g.
■
The Intel® Wireless WiFi Link 4965AGN device is
capable of four operating modes, IEEE802.11a,
IEEE802.11b, IEEE802.11g, and IEEE802.11n (draft)
■
The WLAN device is Wi-Fi certified and operates at a
the maximum data rate of 540 Mbps (theoretical) in
IEEE802.11n (draft) mode; 54 Mbps in IEEE802.11a
or IEEE802.11g mode; and 11 Mbps in IEEE802.11b
mode.
■
The WLAN device supports the following encryption
methods - WEP, TKIP, CKIP, and AES encryption.
■
The Wireless LAN device is compliant with the follow-
ing standards: WPA, WPA2, CCX1.0, CCX2.0,
CCX3.0, and CCX4.0.
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 connec-
tivity 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
authentication, and encryption key settings are identically
configured on all computers in the Ad Hoc network.
Access Point (Infrastructure) Mode
(See Figure A-2) Infrastructure mode refers to a wireless
network architecture in which devices communicate
with wireless or wired network devices through an
Access Point. In infrastructure mode, wireless devices
can communicate with each other or with a wired
network. Corporate wireless networks operate in infra-
structure mode because they require access to the wired
LAN in order to access computers, devices, and services
such as file servers, printers, and databases.
Please note throughout this document that
-- at the time of publication -- the 802.11n
standard has not yet been ratified, and is
still in draft stage.
Figure A-1. Ad Hoc Mode Network
T Series.book Page 94 Wednesday, April 25, 2007 11:29 AM
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