Home  ›  Glossary  ›


High-Speed Downlink Packet Access

An upgrade for WCDMA / UMTS networks. It doubles network capacity and increases download data speeds five-fold or more.


Initial deployments and devices were limited to a speed of 1.8 Mbit/s. Subsequent network upgrades and new end-user devices boosted the rate to 3.6 Mbit/s, followed by 7.2, 10.1, 14.4, and 21 Mbit/s.

A related technology called HSUPA provides a similar speed boost for data in the uplink (upload) direction. Together, HSDPA and HSUPA are somtimes referred to as HSPA.


HSDPA is standardized by the 3GPP in UMTS Release 5.

In terms of data speed and general technology evolution, the closest equivalent to HSDPA for CDMA networks would be EVDO.

Still confused? Spot a mistake? Give us your feedback on this definition.

back to Glossary Index

Subscribe to Phone Scoop News with RSS Follow @phonescoop on Threads Follow @phonescoop on Mastodon Phone Scoop on Facebook Follow on Instagram



All content Copyright 2001-2024 Phone Factor, LLC. All Rights Reserved.
Content on this site may not be copied or republished without formal permission.