3.5 G (HSDPA)

High-Speed Downlink Packet Access (HSDPA) is a mobile protocol and is sometimes referred to as 3.5 G technology

The first phase of HSDPA 4.1 Mbps capacity. Then following the second phase with a capacity of 11 Mbps and a maximum capacity of downlink peak data rate of up to 14 Mbit / s. It was developed from the WCDMA technology as CDMA2000 EV-DO development. HSDPA provides evolutionary path for Universal Mobile Telecommunications System network (UMTS), which allows for the use of larger data capacity (up to 14.4 Mbit / second direction down).

HSDPA is an evolution of W-CDMA standard and is designed to increase data transfer speed of 5x higher. HSDPA channel memdefinisikan a new W-CDMA, namely high-speed downlink shared channel (HS-DSCH) that different ways of operation with the W-CDMA channel is currently available. Until now the use of HSDPA technology on communications only under the direction towards the mobile phone.

Speed data download

In the neighborhood of this technology can perform the data download speed up to 3.7 Mbps.
In the state of motion of someone driving at highway speed 100 km / h speed Internet access to 1.2 Mbps.
In office environments with high concentrations of users can enjoy streaming video with an estimated speed of 300 Kbps.

Excess HSDPA

The advantage of HSDPA is to reduce the delay in the downloading of data (delay) and provide a faster feedback when users use interactive applications such as mobile office or high-speed Internet access to use the facility to download a game or audio and video. Another advantage of HSDPA, increase system capacity without requiring additional frequency spectrum. This will reduce the cost of mobile data services significantly.


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