Lý thuyết mạng không dây P9

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Lý thuyết mạng không dây P9

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The growth of Wireless Local Area Network (WLANs) commenced in the mid-1980s and was triggered by the US Federal Communications Commission (FCC) decision to authorize the public use of the Industrial, Scientific and Medical (ISM) bands. This decision eliminated the need for companies and end users to obtain FCC licenses to operate their wireless products. Since then, there has been a substantial growth in the area of WLANs. Lack of standards, however, enabled the appearance of many proprietary products thus dividing the market into several, possibly incompatible parts. Consequently, the need for standardization in the area appeared. ...

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