Linksys WPC54GR manual What is infrastructure mode?, What is roaming?, What is ISM band?

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Wireless-G Notebook Adapter with RangeBooster

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. This type of 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 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.

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 the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to

Appendix A: Troubleshooting

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Frequently Asked Questions

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Contents Wireless- G Word definition How to Use this User GuideCopyright and Trademarks Table of Contents Wireless-G Notebook Adapter with RangeBooster List of Figures Front Panel10 Import a Profile What’s in this User Guide? IntroductionWelcome Adapter a device that adds network functionality to your PCIntroduction What’s in this User Guide? Roaming Planning your Wireless NetworkNetwork Topology Topology the physical layout of a networkNetwork Layout Power Getting to Know the Wireless-G Notebook AdapterLED Indicators LinkSetting up and Connecting the Wireless-G Notebook Adapter Starting the SetupConnecting the Adapter Setting up the AdapterWEP Key Needed for Connection Congratulations Manual Setup 10 Network SettingsWEP WPA Personal PSK2WPA Enterprise EAP-TLSRadius 19 Confirm New Settings Wireless Network Status screen Using the Wireless Network MonitorAccessing the Wireless Network Monitor Link InformationWireless Network Status Wireless Network Statistics More Information-Network StatisticsSite Survey Site InformationProfiles Profile InformationCreate a New Profile 12 Create a New ProfileWPA Personal Needed for Connection 13 Available Wireless Network 15 Wireless Mode 17 Wireless Security WEP 19 Wireless Security PSK2 EAP-TLS 22 Wireless Security Radius Using EAP-TLS 25 Congratulations Wireless-G Notebook Adapter does not work properly Appendix a TroubleshootingCommon Problems and Solutions What is the Ieee 802.11g standard? Frequently Asked QuestionsWhat is the 802.11b standard? What 802.11b features are supported?What is ISM band? What is infrastructure mode?What is roaming? What is Spread Spectrum?What is WPA? What is DSSS? What is FHSS? And what are their differences?What is WEP? What is RADIUS?Appendix B Windows XP Wireless Zero Configuration Windows XP Wireless Zero ConfigurationFigure B-4 Available Wireless Network Figure B-6 Network Connection Wireless Security Security Threats Facing Wireless Networks Appendix C Wireless SecuritySecurity Precautions Appendix C Wireless Security Wireless-G Notebook Adapter with RangeBooster Network Neighborhood/My Network Places Appendix D Windows HelpShared Resources Appendix E Glossary Wireless-G PCI Adapter with SpeedBooster Wireless-G PCI Adapter with SpeedBooster Wireless-G PCI Adapter with SpeedBooster Wireless-G PCI Adapter with SpeedBooster Appendix F Specifications 802.11g OfdmAppendix G Warranty Information Limited WarrantyAppendix H Regulatory Information FCC StatementWireless-G Notebook Adapter with RangeBooster Wireless-G Notebook Adapter with RangeBooster Wireless-G Notebook Adapter with RangeBooster Wireless-G Notebook Adapter with RangeBooster Wireless-G Notebook Adapter with RangeBooster Appendix I Contact Information
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