Technology of High Speed Packet Access (HSPA)

UMTS Release 99, based on dedicated resource allocation per user, is not well suited for IP packet data traffic. Therefore High Speed Packet Downlink Access (HSDPA) and Enhanced Dedicated Channel (E-DCH) have been introduced as new features of UMTS for Downlink and Uplink in UMTS Release 5 and Release 6, respectively. This technology called High Speed Packet Access (HSPA) claims significant enhancements in end-to-end service provisioning for IP based services. This paper introduces these future technology enhancements and assesses the potential gains for future applications and in term user perception.

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