Linksys WUSB54GS manual What is ad-hoc mode?, What is infrastructure mode?, What is roaming?

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Wireless-G Internet Video Camera

What is ad-hoc mode?

When a wireless network is set to ad-hoc mode, the wireless-equipped computers are configured to communicate directly with each other. The ad-hoc wireless network will not communicate with any wired network.

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.

What is roaming?

Roaming is the ability of a PC 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.

What is ISM band?

The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the ISM (Industrial, Scientific and Medical) band. Spectrum in the vicinity of 2.4 GHz, in particular, is being made available worldwide. This presents a truly revolutionary opportunity to place convenient high-speed wireless capabilities in the hands of users around the globe.

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

Appendix A: Troubleshooting

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Frequently Asked Questions

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Contents 802 GHz .11g Wireless- G Copyright and Trademarks How to Use this User GuideTable of Contents List of Figures Setup Wizard’s Welcome Screen13 Create a New Profile Welcome IntroductionWhat’s in this Guide? Wireless-G USB Network Adapter with SpeedBooster Roaming Planning your Wireless NetworkSsid your wireless network’s name Network TopologyNetwork Layout Planning your Wireless NetworkSetup Wizard’s Welcome Screen Using the USB Network Adapter’s Setup WizardWireless Mode Screen Wireless Security Screen WEP PSK+RADIUS 10 The Check Settings Screen Adapter Software instructions for the computerA USB Port Connecting the USB Network AdapterLink LED IndicatorsUsing the Wireless Network Monitor Icon Using the Wireless Network MonitorLink Information Accessing the Wireless Network MonitorWireless Network Status Wireless Network Statistics Site Information Site SurveyProfile Information Profiles13 Create a New Profile Creating a New Profile17 Ad-Hoc Mode Settings for New Profile WEP 18 Wireless Security for New ProfilePSK 20 Wireless Security PSK for New ProfileEAP-TLS PSK + RadiusRadius 23 Wireless Security Radius Using EAP-TLS for New Profile26 Congratulations for New Profile USB Network Adapter does not work properly Appendix a TroubleshootingCommon Problems and Solutions My computer does not recognize the USB Network AdapterWhat Ieee 802.11b features are supported? Frequently Asked QuestionsWhat is the Ieee 802.11b standard? What is the Ieee 802.11g standard?What is ISM band? What is ad-hoc mode?What is infrastructure mode? What is roaming?What is WEP? What is DSSS? What is FHSS? And what are their differences?Security Threats Facing Wireless Networks Appendix B Wireless SecuritySecurity Precautions Appendix B Wireless Security Wireless-G USB Network Adapter with SpeedBooster Network Neighborhood/My Network Places Appendix C Windows HelpTCP/IP Shared ResourcesAppendix D Glossary Wireless-G USB Network Adapter with SpeedBooster Wireless-G USB Network Adapter with SpeedBooster Standards Appendix E SpecificationsModel WUSB54GSOperating Humidity FCCOperating Temp Storage TempLimited Warranty Appendix F Warranty InformationFCC Statement Appendix G Regulatory InformationAppendix H Contact Information
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