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Cisco Systems WUSB54GSC What is ad-hoc mode?, What is infrastructure mode?, What is roaming?

Models: WUSB54GSC

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Compact Wireless-G USB Network Adapter with SpeedBooster

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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Cisco Systems WUSB54GSC manual What is ad-hoc mode?, What is infrastructure mode?, What is roaming?, What is ISM band?
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WUSB54GSC specifications

The Cisco Systems WUSB54GSC is a versatile wireless USB adapter designed to provide users with high-speed internet access by connecting to wireless networks. This adapter represents a significant step in wireless technology, making it easy to upgrade desktops and laptops to Wi-Fi capability, particularly in environments where it is not feasible to connect to a modem or router through a wired connection.

One of the standout features of the WUSB54GSC is its compliance with the IEEE 802.11g standard, allowing for data transfer rates of up to 54 Mbps. This makes it suitable for various online activities, including web browsing, streaming media, and online gaming. The device also supports backwards compatibility with the older 802.11b standard, ensuring that users can connect to a wider range of wireless networks regardless of their configuration.

Another significant characteristic of the WUSB54GSC is its compact and portable design. The adapter is small enough to fit into a pocket, making it ideal for users who are constantly on the move. Its plug-and-play functionality also means that users can easily install it without the need for complicated configuration processes. The adapter's integration with Windows and other operating systems ensures a seamless experience, allowing users to connect to their networks with minimal setup.

The WUSB54GSC also features advanced security options to protect users' data and safeguard their connections. It supports various encryption protocols, including WEP, WPA, and WPA2, helping to create a secure wireless environment and protecting against unauthorized access. This ensures that sensitive information remains confidential while users enjoy the benefits of wireless technology.

Moreover, the WUSB54GSC is equipped with Cisco's "Wi-Fi Protected Setup" (WPS), which simplifies the process of connecting to secure wireless networks. By simply pressing a button on the router and the adapter, users can quickly establish a secure connection without remembering complex passwords.

In summary, the Cisco Systems WUSB54GSC is a reliable and user-friendly wireless USB adapter that combines portability, speed, and security. Its compliance with modern wireless standards, along with its robust security features, makes it an excellent choice for users looking to enhance their wireless connectivity experience. Whether for home, office, or travel use, the WUSB54GSC stands as a valuable tool in today's digital age.