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Jan 10, 2013 11:20:00 AM

Why we Migrated from HSPA to LTE Sooner than we Thought

UMTS data rates evolved over the years from 3.6 Mb/s in 2005 (HSPA), to 21.1 Mb/s in 2008 (HSPA+) and finally to 84.4 Mb/s in 2010 (HSPA++). The 84.4 Mb/s data rate is very similar to data rates that can be achieved using LTE technology under the same circumstances (10 MHz RF channel, 2×2 MIMO). When in 2009 Verizon Wireless announced the plan to migrate to 3GPP and deploy LTE in 2010, a lively debate ensued among the incumbent North American 3GPP operators. The topic was whether higher data rates should be achieved via migration to HSPA+ and HSPA++, or if imminent migration to LTE is warranted.

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