Universal Mobile Telecommunications System (UMTS) with High Speed Packet Access (HSPA) technology and its evolution to beyond Third Generation (3G) is becoming the primary global mobile-broadband solution.

Building on the phenomenal success of Global System for Mobile Communications (GSM), the GSM/UMTS ecosystem is becoming the most successful communications technology family ever. UMTS/HSPA, in particular, has many key technical and business advantages over other mobile wireless technologies. Whereas other wireless technologies show great potential on paper, UMTS has global commercial deployments that are providing customers mobile-broadband service today.

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http://www.3gamericas.org/pdfs/2007_Rysavy_091007.pdf