High Speed Packet Access (HSPA) is actually not one data protocol but represents two mobile telephony protocols, High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA), that extends and improves the performance of existing WCDMA protocols.

UMTS (Universal Mobile Telecommunications System) is the 3G standard on which HSPDA Router and HSPA+ are based. Because the ITU determines generational classes based on speed and some other factors, HSPA+ was reclassified as 4G since the technology evolved to meet the capabilities of “purer” 4G technologies such as WiMAX and LTE.Support by E-lins.