{"guid":"a871e2e5-3750-4bf7-b96f-8204bd9a951d","title":"DG63: WLAN in Hochgeschwindigkeitszügen","subtitle":"","slug":"dg63","link":"https://berlin.ccc.de/wiki/Datengarten/63","description":"\u003cp style=\"margin: 0.4em 0px 0.5em; line-height: 19.2px; font-family: sans-serif; font-size: 12.8px;\"\u003eWenn in Z\u0026uuml;gen WLAN/Internet angeboten wird, erfolgt die Anbindung nach au\u0026szlig;en fast immer \u0026uuml;ber Mobilfunk. Die eingesetzte Technik unterscheidet sich je nach Anforderung an das System (Anzahl Clients, Nutzungsverhalten, Datendurchsatz). Aber wie genau funktioniert die Anbindung bei Hochgeschwindigkeitsz\u0026uuml;gen?\u003c/p\u003e\r\n\u003cp style=\"margin: 0.4em 0px 0.5em; line-height: 19.2px; font-family: sans-serif; font-size: 12.8px;\"\u003eDer Vortrag soll zun\u0026auml;chst einen \u0026Uuml;berblick \u0026uuml;ber die verwendete Standardarchitektur im Hochgeschwindigkeitsbereich geben. Dabei werden auch Besonderheiten der relevanten Hardware-Komponenten wie Modems und Antennen erkl\u0026auml;rt. Vertiefend wird es dann um die Zug-Land-Verbindung gehen, auf der vermutlich das meiste Potential liegen bleiben kann. Unterschiedliche RTTs (Round Trip Times) und Wechsel zwischen Mobilfunkstandards k\u0026ouml;nnen mit Protokollen wie TCP recht schnell unangenehm werden. So wird erkl\u0026auml;rt, warum Problemstellung und deren L\u0026ouml;sung technisch unterschiedlich komplex werden k\u0026ouml;nnen und was als \"state of the art\" angesehen wird.\u003c/p\u003e","original_language":"deu","persons":["Anna-Lena Baecker"],"tags":["Hochgeschwindigkeitszug","ICE","WLAN","LTE","3G","UMTS","HSPA","Antennenbau","Datengarten"],"view_count":2338,"promoted":false,"date":"2016-02-09T22:00:00.000+01:00","release_date":"2016-02-10T01:00:00.000+01:00","updated_at":"2026-04-03T22:45:04.124+02:00","length":2549,"duration":2549,"thumb_url":"https://static.media.ccc.de/media/regional/berlin/datengarten/63-hd.jpg","poster_url":"https://static.media.ccc.de/media/regional/berlin/datengarten/63-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/regional/berlin/datengarten/a871e2e5-3750-4bf7-b96f-8204bd9a951d-timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/regional/berlin/datengarten/a871e2e5-3750-4bf7-b96f-8204bd9a951d-thumbnails.vtt","frontend_link":"https://media.ccc.de/v/dg63","url":"https://api.media.ccc.de/public/events/a871e2e5-3750-4bf7-b96f-8204bd9a951d","conference_title":"CCCB 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