This document and the information contained herein is the property of Wistron NeWeb
Corporation and reproduction by any means (including, but not limited to, xerographic,
chemical, electronic) and distribution is expressly prohibited without prior written consent from
Wistron NeWeb Corporation. The document and information contained herein are confidential
and may not be divulged without express written consent from Wistron NeWeb Corporation,
located at 20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
Copyright 2010 by Wistron NeWeb Corporation / All rights reserved.
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: Any changes or modifications not expressly approved by the party responsible
for compliance could void the user's authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
IMPORTANT NOTE:
Radiation Exposure Statement:
The product comply with the US portable RF exposure limit set forth for an uncontrolled
environment and are safe for intended operation as described in this manual. The further RF
exposure reduction can be achieved if the product can be kept as far as possible from the
user body or set the device to lower output power if such function is available.
This transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.
Country Code selection feature to be disabled for products marketed to the US/CANADA
SAR compliance has been established in typical laptop computer(s) with USB slot, and
product could be used in typical laptop computer with USB slot. Other application like
handheld PC or similar device has not been verified and may not compliance with related RF
exposure rule and such use shall be prohibited.
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
The USB dongle transmitter is approved for use in typical laptop computers. To comply with
FCC RF exposure requirements, it should not be used in other devices or certain laptop and
tablet computer configurations where the USB connectors on the host computer are unable to
provide or ensure the necessary operating configurations intended for the device and its
users or bystanders to satisfy RF exposure compliance requirements.
Operations in the 5.15-5.25GHz band are restricted to indoor usage only.
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NeWeb
Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
This device complies with Industry Canada license-exempt RSS standard(s). Operation is
subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired
operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils
radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le fonctionnement.
Caution:
(i) the device for operation in the band 5150-5250 MHz is only for indoor use to reduce the
potential for harmful interference to co-channel mobile satellite systems;
(ii) the maximum antenna gain permitted for devices in the bands 5250-5350 MHz and 54705725 MHz shall comply with the e.i.r.p. limit; and
(iii) the maximum antenna gain permitted for devices in the band 5725-5825 MHz shall
comply with the e.i.r.p. limits specified for point-to-point and non point-to-point operation as
appropriate.
(iv) Users should also be advised that high-power radars are allocated as primary users (i.e.
priority users) of the bands 5250-5350 MHz and 5650-5850 MHz and that these radars could
cause interference and/or damage to LE-LAN devices.
Avertissement:
(i) les dispositifs fonctionnant dans la bande 5 150-5 250 MHz sont réservés uniquement pour
une utilisation à l’intérieur afin de réduire les risques de brouillage préjudiciable aux systèmes
de satellites mobiles utilisant les mêmes canaux;
(ii) le gain maximal d’antenne permis pour les dispositifs utilisant les bandes 5 250-5 350 MHz
et 5 470-5 725 MHz doit se conformer à la limite de p.i.r.e.;
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NeWeb
Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
(iii) le gain maximal d’antenne permis (pour les dispositifs utilisant la bande 5 725-5 825 MHz)
doit se conformer à la limite de p.i.r.e. spécifiée pour l’exploitation point à point et non point à
point, selon le cas.
(iv) De plus, les utilisateurs devraient aussi être avisés que les utilisateurs de radars de haute
puissance sont désignés utilisateurs principaux (c.-à-d., qu’ils ont la priorité) pour les bandes
5 250-5 350 MHz et 5 650-5 850 MHz et que ces radars pourraient causer du brouillage et/ou
des dommages aux dispositifs LAN-EL.
Radiation Exposure Statement:
The product comply with the Canada portable RF exposure limit set forth for an uncontrolled
environment and are safe for intended operation as described in this manual. The further RF
exposure reduction can be achieved if the product can be kept as far as possible from the
user body or set the device to lower output power if such function is available.
Déclaration d'exposition aux radiations:
Le produit est conforme aux limites d'exposition pour les appareils portables RF pour les
Etats-Unis et le Canada établies pour un environnement non contrôlé. Le produit est sûr pour
un fonctionnement tel que décrit dans ce manuel. La réduction aux expositions RF peut être
augmentée si l'appareil peut être conservé aussi loin que possible du corps de l'utilisateur ou
que le dispositif est réglé sur la puissance de sortie la plus faible si une telle fonction est
disponible.
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NeWeb
Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
This device complies with the essential requirements of the R&TTE Directive 1999/5/EC. The
following test methods have been applied in order to prove presumption of conformity with the
essential requirements of the R&TTE Directive 1999/5/EC:
- IEC 60950-1:2005 (Second Edition) + Am 1:2009
Safety of Information Technology Equipment
- EN 62311: 2008 / Article 3(1)(a) and Article 2 2006/95/EC)
Assessment of electronic and electrical equipment related to human exposure restrictions for
electromagnetic fields (0 Hz-300 GHz)
- EN 62209-1: 2006
Human exposure to radio frequency fields from hand-held and body-mounted wireless
communication devices – Human models, instrumentation, and procedures Part 1: Procedure to determine the specific absorption rate (SAR) for hand-held devices used
in close 13 proximity to the ear (frequency range of 300 MHz to 3 GHz)
- EN 300 328 V1.8.1: 2012-06
Electromagnetic compatibility and Radio spectrum Matters (ERM); Wideband transmission
systems; Data transmission equipment operating using wide band modulation techniques;
Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
- EN 301 893 V1.7.1: 2012-06
Broadband Radio Access Networks (BRAN); 5 GHz high performance RLAN; Harmonized EN
covering the essential requirements of article 3.2 of the R&TTE Directive
- EN 301 489-1 V1.9.2: 2011
Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic
Compatibility (EMC) standard for radio equipment and services; Part 1: Common technical
requirements
- EN 301 489-17 V2.2.1 2012
Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic
Compatibility (EMC) standard for radio equipment; Part 17: Specific conditions for Broadband
Data Transmission Systems
This product complies with EU requirements regarding restriction of exposure of persons to
radio-frequency energy (RF) emitted by telecommunication and radio devices as it is
designed and manufactured in such a way as not to exceed the exposure limits indicated by
the European Union Commission. The permitted SAR limit for the general population is 2.0
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NeWeb
Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
[Jméno výrobce] tímto prohlašuje, že tento [typ zařízení] je ve shodě se základními
požadavky a dalšími příslušnými ustanoveními směrnice 1999/5/ES.
Dansk
[Danish]
Undertegnede [fabrikantens navn] erklæ rer herved, at følgende udstyr [udstyrets typebetegnelse] overholder de væ sentlige krav og øvrige relevante krav i direktiv
1999/5/EF.
Deutsch
[German]
Hiermit erklärt [Name des Herstellers], dass sich das Gerät [Gerätetyp] in
Ü bereinstimmung mit den grundlegenden Anforderungen und den übrigen
einschlägigen Bestimmungen der Richtlinie 1999/5/EG befindet.
Eesti
[Estonian]
Käesolevaga kinnitab [tootja nimi = name of manufacturer] seadme [seadme tüüp = type of equipment] vastavust direktiivi 1999/5/EÜ põhinõuetele ja nimetatud direktiivist
tulenevatele teistele asjakohastele sätetele.
English
Hereby, [name of manufacturer], declares that this [type of equipment] is in compliance
with the essential requirements and other relevant provisions of Directive 1999/5/EC.
Español
[Spanish]
Por medio de la presente [nombre del fabricante] declara que el [clase de equipo]
cumple con los requisitos esenciales y cualesquiera otras disposiciones aplicables o
exigibles de la Directiva 1999/5/CE.
Ελληνική
[Greek]
ΜΕ ΤΗΝ ΠΑΡΟΥΣΑ [name of manufacturer] ΔΗΛΩΝΕΙ ΟΤΙ [type of equipment]
ΣΥΜΜΟΡΦΩΝΕΤΑΙ ΠΡΟΣ ΤΙΣ ΟΥΣΙΩΔΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ ΤΙΣ ΛΟΙΠΕΣ ΣΧΕΤΙΚΕΣ
ΔΙΑΤΑΞΕΙΣ ΤΗΣ ΟΔΗΓΙΑΣ 1999/5/ΕΚ.
Français
[French]
Par la présente [nom du fabricant] déclare que l'appareil [type d'appareil] est conforme
aux exigences essentielles et aux autres dispositions pertinentes de la directive
1999/5/CE.
Italiano
[Italian]
Con la presente [nome del costruttore] dichiara che questo [tipo di apparecchio] è
conforme ai requisiti essenziali ed alle altre disposizioni pertinenti stabilite dalla direttiva
1999/5/CE.
W/Kg. This limit guarantees an ample safety margin that protects all persons regardless of
age and health condition.
The highest SAR level recorded for this model was equal to 0.821W/kg.
The minimum distance between the user and/or any bystander and the radiating structure of
the transmitter is 20cm.
In Italy the end-user should apply for a license at the national spectrum authorities in order to
obtain authorization to use the device for setting up outdoor radio links and/or for supplying
public access to telecommunications and/or network services.
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NeWeb
Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
Ar šo [name of manufacturer / izgatavotāja nosaukums] deklarē, ka [type of equipment
/ iekārtas tips] atbilst Direktīvas 1999/5/EK būtiskajām prasībām un citiem ar to
saistītajiem noteikumiem.
Lietuvių
[Lithuanian]
Šiuo [manufacturer name] deklaruoja, kad šis [equipment type] atitinka esminius
reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.
Nederlands
[Dutch]
Hierbij verklaart [naam van de fabrikant] dat het toestel [type van toestel] in
overeenstemming is met de essentiële eisen en de andere relevante bepalingen van
richtlijn 1999/5/EG.
Malti
[Maltese]
Hawnhekk, [isem tal-manifattur], jiddikjara li dan [il-mudel tal-prodott] jikkonforma malħtiġijiet essenzjali u ma provvedimenti oħrajn relevanti li hemm fid-Dirrettiva 1999/5/EC.
Magyar
[Hungarian]
Alulírott, [gyártó neve] nyilatkozom, hogy a [... típus] megfelel a vonatkozó alapvetõ
követelményeknek és az 1999/5/EC irányelv egyéb elõírásainak.
Polski
[Polish]
Niniejszym [nazwa producenta]oświadcza, że [nazwa wyrobu] jest zgodny z
zasadniczymi wymogami oraz pozostałymi stosownymi postanowieniami Dyrektywy
1999/5/EC.
Português
[Portuguese]
[Nome do fabricante] declara que este [tipo de equipamento] está conforme com os
requisitos essenciais e outras disposições da Directiva 1999/5/CE.
Slovensko
[Slovenian]
[Ime proizvajalca] izjavlja, da je ta [tip opreme] v skladu z bistvenimi zahtevami in
ostalimi relevantnimi določili direktive 1999/5/ES.
Slovensky
[Slovak]
[Meno výrobcu] týmto vyhlasuje, že [typ zariadenia] spĺňa základné požiadavky a
všetky príslušné ustanovenia Smernice 1999/5/ES.
Suomi
[Finnish]
[Valmistaja = manufacturer] vakuuttaa täten että [type of equipment = laitteen
tyyppimerkintä] tyyppinen laite on direktiivin 1999/5/EY oleellisten vaatimusten ja sitä
koskevien direktiivin muiden ehtojen mukainen.
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NeWeb
Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
The DNUR-V72 module is 802.11 a/b/g/n sign-chip solutions for USB dongle. It’s very small
and cost-effective modules which can bundle with PCs, TVs, set-top boxes, personal video
recorders and other devices to a WiFi network.
2. Usage
Thank you for purchasing the WLAN a/b/g/n USB2.0 Adapter that provides the easiest way to
wireless networking. This User Manual contains detailed instructions in the operation of this
product. Please keep this manual for future reference.
System Requirements
A laptop PC contains:
- 32 MB memory or greater
- 300 MHz processor or higher
Microsoft® Win™2000/ME/98 Second Edition/XP
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
Note! To automatically connect to the network with the strongest signal, select Enable Smart
Selection. Any displays in Profile List.
3. From the list of “Available Networks”, choose one network by double clicking the Network
Name. One of the following dialog boxes appears. Click “Yes” to continue.
4. If the chosen network has security enabled, the Security tab displays. Select the security
option used by the network. Contact the network administrator for the correct settings.
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
7. If selecting Pre-Shared Key, click on the Configure button to enter the correct Encryption
Keys.
Key entry method:
a.10hex digits: User must enter 10 hexadecimal digits.
The hexadecimal define is "0-9" and "A-F".
ex: 123456abc
b.5 chars: User must enter 5 characters. ex: ab3#@
c.13 chars: User must enter 13 characters.
ex: ab3#@kf08&kdk
d.16 chars: User must enter 16 characters.
ex: ab3#@kf08&kdk456
For WEP key, please contact with MIS administrator.
8. Click on OK (or Apply if using the other tabs) when done to save the settings.
9. Once connected (the icon or in front of the name of the Connected Network), you
can check the signal strength from the icon in the Windows System Tray.
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NeWeb
Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
In Windows XP, it is recommended that you use the WLAN a+b+g+n USB2.0 Adapter
Configuration Utility. Before using the Utility, please follow the steps below to disable the
Windows XP Zero Configuration:
Option 1:
1. Double click the shortcut icon to open the Utility.
2. From the Windows System Tray, you should see the signal icon. Right-click it and select
“Disable Zero-Configuration”.
Option 2:
Go to “Control Panel” and double click “Network Connections”.
Right-click “Wireless Network Connection” of “WLAN a+b+g USB2.0 Adapter”, and select
“Properties”.
Select “Wireless Networks” tab, and uncheck the check box of “Use Windows to configure my
wireless network settings”, and then click “OK”.
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
8. Enter an encryption key in the Shared: First field.
9. Click OK (or Apply if using the other tabs) to save the settings. The new Network Name
is listed in the Profile List.
The driver does not allow channel selection in Ad-Hoc mode. Instead, the driver starts with
an initial channel then checks channel status. If the channel is busy, the driver
automatically uses a different channel.
For details of each setting, please see chapter 5.
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
You can set the Wireless Network Adapter to work in either Infrastructure mode or Ad Hoc
mode.
NOTE! Ad-hoc mode is available only for 802.11b/g. It is not available for 802.11a. This is a
client product and do not have radar detection function specified by FCC. The software will
not let you to use ad-hoc under 802.11a.
Infrastructure Mode
In infrastructure mode, devices communicate with each other by first going through an Access
Point (AP). Wireless devices can communicate with each other or can communicate with a
wired network. When one AP is connected to wired network and a set of wireless stations, it
is referred to as a BSS (Basic Service Set).
Ad Hoc Mode
Ad-hoc mode is also called “peer-to-peer mode” or “Independent Basic Service Set (IBSS)”.
In ad hoc mode, devices communicate directly with each other without using an Access Point
(AP).
NOTE! Ad-hoc mode is available only for 802.11b/g. It is not available for 802.11a. This is a
client product and do not have radar detection function specified by FCC. The software will
not let you to use ad-hoc under 802.11a.
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
NOTE! Ad-hoc mode is available only for 802.11b/g. It is not available for 802.11a.
This is a client product and do not have rador detection function specified by FCC.
The software will not let you to use ad-hoc under 802.11a.
Ad Hoc Net Start: Specifies a band to establish an Ad Hoc network if no matching
SSID is found. Options available are the following: 802.11b and 802.11g.
NOTE! Ad-hoc mode is available only for 802.11b/g. It is not available for 802.11a.
This is a client product and do not have radar detection function specified by FCC.
The software will not let you to use ad-hoc under 802.11a.
802.11b Range: Options are Normal Range and Extended Range. This function
can let user to determine the transfer range in 802.11b mode. Extended Range can
prolong the transfer range with a lower data transmitting rate.
Scan Mode: Options are Active Scan, Passive Scan and Auto. In Active Scan, the
driver sends out the probe request frames from each channel and collects the
response frames from the responding. In Passive Scan, the driver scan each
requested channel, listening the beacons on each channel.
Transmit Power: This setting allows you to change the output power of the PC Card
to increase or decrease the coverage area.
QoS: Disables or enables the PC Card to cooperate in a network using QoS
(Quality of Service).
2.4 GHz Preamble: Allows Ad-Hoc compatibility with other 2.4 GHz devices. Two
options are Short and Long and Long only. Use Long Only when configuring the
client for an 802.11b RoamAbout AP wireless network.
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
PassPhrase must be a minimum of 8 printable ASCII characters. The PassPhraseshould
be at least 20 characters to make it more difficult for an attacker to decipher the key.
7. If selecting Pre-Shared Key, click on the Configure button to enter the Encryption
Keys.When finished, click OK. For WEP key, please contact with MIS administrator.
Key Entry Method: Determines the entry method for the key. Hexadecimal (0-9, A-F)
or ASCII text (all keyboard characters).
Default Encryption Key: Allows you to choose one encryption key (First, Second,
Third, or Fourth) as the transmit key, which encrypts transmissions from the PC Card.
Unique Key: Defines the per-session encryption key for the current network
configuration. Not used in Ad-Hoc mode.
Shared Keys: Use these fields to enter the wireless network’s encryption keys. The
keys must be in the correct position (First, Second, Third, or Fourth).
Key Length: Defines the length of each encryption key.
o For 40/64 bit (enter 10 digits for hexadecimal or 5 characters for ASCII)
o For 104/128 bit (Enter 26 digits for hexadecimal or 13 characters for ASCII)
When the length is changed, the number of available characters in the field
automatically changes. If a previously entered key is too long, the key is automatically
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
truncated to fit. If the key length is increased again, the key does not update to the
previous value.
8. Click OK to save the settings.
9. Select “TCP/IP Property” tab. Enter the settings and click “OK” to save the settings.
If the network uses DHCP server, choose Obtain an IP address automatically.
If the network does not use DHCP server, choose Use the following IP address to set
the relative settings. For the IP configuration information, please contact the network
administrator.
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
1. Can I run an application from a remote computer over the wireless network?
This will depend on whether or not the application is designed to be used over a network.
Consult the application’s user guide to determine whether it supports operation over a
network.
2. Can I play computer games with other members of the wireless network?
Yes, as long as the game supports multiple players over a LAN (local area network).
Refer to the game’s user guide for more information.
3. What is Spread Spectrum?
Spread Spectrum technology is a wideband radio frequency technique developed by the
military for use in reliable, secure, mission-critical communications systems. It is designed to
trade off bandwidth efficiency for reliability, integrity, and security. In other words, more
bandwidth is consumed than in the case of narrowband transmission, but the trade-off
produces a signal that is, in effect, louder and thus easier to detect, provided that the receiver
knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not
tuned to the right frequency, a spread-spectrum signal looks like background noise. There are
two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping
Spread Spectrum (FHSS).
4. What is DSSS? What is FHSS? And what are their differences?
Frequency-Hopping Spread-Spectrum (FHSS) uses a narrowband carrier that changes
frequency in a pattern that is known to both transmitter and receiver. Properly synchronized,
the net effect is to maintain a single logical channel. To an unintended receiver, FHSS
appears to be short-duration impulse noise. Direct-Sequence Spread-Spectrum (DSSS)
generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a
chip (or chipping code). The longer the chip, the greater the probability that the original data
can be recovered. Even if one or more bits in the chip are damaged during transmission,
statistical techniques embedded in the radio can recover the original data without the need for
retransmission. To an unintended receiver, DSSS appears as low power wideband noise and
is rejected (ignored) by most narrowband receivers.
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Wistron NeWeb Corporation
20 Park Avenue II, Hsinchu Science Park, Hsinchu 308, Taiwan, R.O.C.
5. Would the information be intercepted while transmitting on air?
WLAN features two-fold protection in security. On the hardware side, as with Direct Sequence
Spread Spectrum technology, it has the inherent security feature of scrambling. On the
software side, WLAN offers the encryption function (WEP) to enhance security and access
control.
6. What is WEP?
WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 64-bit or 128-bit
shared key algorithm, as described in the IEEE 802.11 standard.
7. What is infrastructure mode?
When a wireless network is set to infrastructure mode, the wireless network is configured to
communicate with a wired network through a wireless access point.
8. What is roaming?
Roaming is the ability of a portable computer user to communicate continuously while moving
freely throughout an area greater than that covered by a single access point. Before using the
roaming function, the workstation must make sure that it is the same channel number with the
access point of dedicated coverage area.
To achieve true seamless connectivity, the wireless LAN must incorporate a number of
different functions. Each node and access point, for example, must always acknowledge
receipt of each message. Each node must maintain contact with the wireless network even
when not actually transmitting data. Achieving these functions simultaneously requires a
dynamic RF networking technology that links access points and nodes. In such a system, the
user’s end node undertakes a search for the best possible access to the system. First, it
evaluates such factors as signal strength and quality, as well as the message load currently
being carried by each access point and the distance of each access point to the wired
backbone. Based on that information, the node next selects the right access point and
registers its address. Communications between end node and host computer can then be
transmitted up and down the backbone. As the user moves on, the end node’s RF transmitter
regularly checks the system to determine whether it is in touch with the original access point
or whether it should seek a new one. When a node no longer receives acknowledgment from
its original access point, it undertakes a new search. Upon finding a new access point, it then
re-registers, and the communication process continues.
Wistron NeWeb Confidential Document
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