High-Speed Downlink Packet Access is an enhanced 3G mobile telephone communications protocol. Also dubbed 3.5G, 3G+, and Turbo 3G, HSDPA allows networks based on the Universal Mobile Telecommunications System (UMTS) to offer enhanced down-link data rates up to 99.3 Mb/s. The more recent HSPA+ (High-Speed Packet Access) can achieve speeds of 337.5 Mb/s. The high-speed down-link data channel from the base station is shared between its mobile users, and constantly re-scheduled according to the quality of the radio link to each phone. The data speeds made available the delivery of good quality live video to mobile phones.
HSDPA, HSUPA and HSPA
Categories: Connectivity