April 2011
Intermediate to advanced
368 pages
11h 36m
English
Content preview from Secure Roaming in 802.11 Networks
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Chapter 1
cellular communications. However, many years would pass before a solution was actually
deployed.
Ring and Young’s seminal paper in 1947 addressed the problem of erosion of the RF spectrum,
as more and more users vied for a finite range of frequencies [2]. The breakthrough notion
involved obtaining a highly scalable degree of frequency reuse by dividing transmission and
reception areas into relatively small cells. By restricting the transmission power of the trans-
mitters in these cells, it became possible to reuse the same frequencies in not-too-distant cells.
This concept was the progenitor of the cellular networks that have become such
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.