The following HTML text is provided to enhance online
readability. Many aspects of typography translate only awkwardly to HTML.
Please use the page image
as the authoritative form to ensure accuracy.
3. Wireless LANs come in a variety of
forms. Some of them are centrally controlled and therefore have
some of the same control issues as cellular systems with base
stations; others have distributed control, in which case they
behave more like the no-base-station systems we discuss in this