What is High-Speed Downlink Packet Access (HSDPA)?

What does HSDPA stand for?

High-Velocity Downlink Packet Access (HSDPA) is a Cell communications Protocol that belongs to the high pace packet access (HSPA) own family. HSDP lets in Networks primarily based on (UMTS) to have higher statistics Switch speeds.

Current HSDPA Deployments support down-link speeds of one.8MBPS, three.6MBPS, 7.2MBPS and 14.Four MBPS. In the near destiny those speeds should growth sigNiFicantly. The networks are then to be Upgraded to Evolved HSPA, which gives speeds of 42MBPS downlink in its first launch.

What Does High-Speed Downlink Packet Access Mean?

Being a part of HSPA, HSDPA is a end result of Enhancements made on UMTS (Universal Mobile Telecommunications System). It is being standardized with the aid of the Third Generation Partnership Project (3GPP). Also, as it is a end result of 3GPP tasks, HSDPA is geared closer to evolved GSM Core Networks.

HSDPA is just one half of of the HSPA own family. The different half being HSUPA. While HSDPA focuses extra on high downlink speeds, HSUPA is designed for excessive Uplink speeds. However, considering HSPA network stop users perForm extra Downloads than Uploads, HSDPA speeds are clearly much better than HSUPA. This is also the motive why HSDPA structures are being deployed manner in advance in their HSUPA counterparts.

Top-notch Smartphones like the Apple iPhone four, Nokia N8, BlackBerry Storm 2, HTC Desire S, and LG Optimus 2X aid HSDPA. However, it's far really worth noting that now not all gadgets that aid HSDPA Characteristic the same downlink speeds.

The downlink velocity of an HSDPA Device will depend on its category wide Variety. For example, a device with Class 6 could have a 3.6 Mbps downlink fee, while a category 8 device can reap a 7.2 Mbps downlink.

As of this writing, HSDPA deployments are still part of the first phase. In the second one segment, HSDPA sySTEMs will be capable of reap up to forty two Mbps information costs. This is quicker than a number of nowadays’s land-based totally Broadband connections.

The Modern-day experiments on HSPA downlink speeds accomplished by using Ericsson in laboratory conditions had been capable of reach up to 168 Mbps.