https://hugo.globuklumbo.de/tags/wlan/Recent content in WLAN on FISI LernzettelHugodehttps://hugo.globuklumbo.de/02_netzwerk/wlan-grundlagen/Mon, 01 Jan 0001 00:00:00 +0000https://hugo.globuklumbo.de/02_netzwerk/wlan-grundlagen/<h1 id="wlan-grundlagen">WLAN-Grundlagen<a class="anchor" href="#wlan-grundlagen">#</a></h1> <p><strong>WLAN</strong> (Wireless Local Area Network) ermöglicht drahtlose Netzwerkkommunikation auf Basis des <strong><abbr title="Institute of Electrical and Electronics Engineers" style="text-decoration-line: underline; text-decoration-style: dotted; text-decoration-color: var(--color-link); cursor: help;">IEEE</abbr> 802.11</strong>-Standards. Es arbeitet auf <abbr title="Open Systems Interconnection (Referenzmodell)" style="text-decoration-line: underline; text-decoration-style: dotted; text-decoration-color: var(--color-link); cursor: help;">OSI</abbr>-Schicht 1 (Physical) und 2 (Data Link).</p> <hr> <h2 id="ieee-80211-standards-im-überblick">IEEE 802.11 Standards im Überblick<a class="anchor" href="#ieee-80211-standards-im-%c3%bcberblick">#</a></h2> <table> <thead> <tr> <th>Standard</th> <th>Jahr</th> <th>Frequenz</th> <th>Max. Brutto-Bandbreite</th> <th>Reichweite (innen)</th> <th>Alltagsname</th> </tr> </thead> <tbody> <tr> <td>802.11b</td> <td>1999</td> <td>2,4 GHz</td> <td>11 Mbit/s</td> <td>~30 m</td> <td>–</td> </tr> <tr> <td>802.11g</td> <td>2003</td> <td>2,4 GHz</td> <td>54 Mbit/s</td> <td>~30 m</td> <td>–</td> </tr> <tr> <td>802.11a</td> <td>1999</td> <td>5 GHz</td> <td>54 Mbit/s</td> <td>~15 m</td> <td>–</td> </tr> <tr> <td><strong>802.11n</strong></td> <td>2009</td> <td>2,4 / 5 GHz</td> <td><strong>600 Mbit/s</strong></td> <td>~70 m</td> <td><strong>Wi-Fi 4</strong></td> </tr> <tr> <td><strong>802.11ac</strong></td> <td>2013</td> <td>5 GHz</td> <td><strong>6,9 Gbit/s</strong></td> <td>~35 m</td> <td><strong>Wi-Fi 5</strong></td> </tr> <tr> <td><strong>802.11ax</strong></td> <td>2019</td> <td>2,4 / 5 / 6 GHz</td> <td><strong>9,6 Gbit/s</strong></td> <td>~30 m</td> <td><strong>Wi-Fi 6</strong></td> </tr> <tr> <td>802.11be</td> <td>2024</td> <td>2,4 / 5 / 6 GHz</td> <td>46 Gbit/s</td> <td>–</td> <td>Wi-Fi 7</td> </tr> </tbody> </table> <blockquote class='book-hint '> <p><strong>Prüfungsrelevant:</strong> 802.11n (Wi-Fi 4), 802.11ac (Wi-Fi 5), 802.11ax (Wi-Fi 6) kennen und zuordnen können.</p>