Michael Hiebel
Rohde and Schwarz
High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) optimize
UMTS for packet data services in downlink and uplink, respectively. Together, they are referred to as High
Speed Packet Access (HSPA). Within 3GPP release 7, further improvements to HSPA have been specified
in the context of HSPA+ or HSPA evolution. This application note introduces key features of HSPA+ and
outlines the changes to the radio interface.
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