802.11 Wireless Networks: The Definitive Guide, Second - download pdf or read online

By Matthew S. Gast

ISBN-10: 0596100523

ISBN-13: 9780596100520

This can be a nice e-book for wireless process engineers to appreciate 802.11 a\b\g PHY and MAC. The ebook not just talks approximately theoretical stuff but in addition offers sensible points of wireless networking.

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Extra resources for 802.11 Wireless Networks: The Definitive Guide, Second Edition

Sample text

Furthermore, the complete collection of stations in a network must manage transmissions at multiple speeds. Rules for multirate support are discussed later in this chapter. The Hidden Node Problem In Ethernet networks, stations depend on the reception of transmissions to perform the carrier sensing functions of CSMA/CD. Wires in the physical medium contain the signals and distribute them to network nodes. Wireless networks have fuzzier boundaries, sometimes to the point where each node may not be able to directly communicate with every other node in the wireless network, as in Figure 3-2.

In addition to its activities as a professional society, the IEEE works on standardizing electrical equipment, including several types of communication technology. IEEE standardization efforts are organized by projects, each of which is assigned a number. By far the most famous IEEE project is the IEEE 802 project to develop LAN standards. Within a project, individual working groups develop standards to address a particular facet of the problem. Working groups are also given a number, which is written after the decimal point for the corresponding projects.

As with any technology, the more you know, the better off you will be. 11 implementations hide this complexity. Many of the features of the standard come into their own only when the network is congested, either with a lot of traffic or with a large number of wireless stations. Networks are increasingly pushing the limits in both respects. 11 network. After you've read this chapter, you can skip ahead to Chapters 17-23 and return to the chapters on the protocol's inner workings when you need (or want) to know more.

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802.11 Wireless Networks: The Definitive Guide, Second Edition by Matthew S. Gast

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