Terms Glossary H High Speed Downlink Packet Access
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High Speed Downlink Packet Access (HSDPA)

High-Speed Downlink Packet Access (HSDPA) is an enhanced 3G mobile-telephony communications protocol in the High-Speed Packet Access family, also dubbed 3.5G, 3G+, or Turbo 3G, which allows networks based on Universal Mobile Telecommunications System to have higher data speeds and capacity.
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High-Speed Downlink Packet Access is an enhanced 3G mobile-telephony communications protocol in the High-Speed Packet Access (HSPA) family, also dubbed 3.5G, 3G+, or Turbo 3G, which allows networks based on Universal Mobile Telecommunications System (UMTS) to have higher data speeds and capacity. As of 2013 HSDPA deployments can support down-link speeds of up to 99.3 Mbit/s, when possible. HSPA+ offers further speed increases, providing speeds of up to 337.5 Mbit/s with Release 11 of the 3GPP standards.
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