4. HSDPA
- Description:
High-Speed Downlink Packet Access (HSDPA) is a new mobile telephony protocol and is sometimes referred to as a 3.5G (or "3½G") technology. In this respect it extends WCDMA in the same way that EV-DO extends CDMA2000. HSDPA provides a smooth evolutionary path for Universal Mobile Telecommunications System (UMTS) networks allowing for higher data capacity (up to 14.4 Mbit/s in the downlink). It is an evolution of the W-CDMA standard, designed to increase the available data rate by a factor of 5 or more. HSDPA defines a new W-CDMA channel, the high-speed downlink shared channel (HS-DSCH) that operates in a different way from existing W-CDMA channels, but is only used for downlink communication to the mobile.
- Enablers:
-UMTS standardization
-HSDPA H/W and S/W evolution
-HSDPA Devices
-Killer Application
-Reasonable service price
-Government policy in favor of HSDPA
- Inhibitors:
-Rapid penetration rate of Wibro
-Difficulties in agreement among industry like convergence service of banking and communications using mobile chip
-Retardation of HSDPA service
- Paradigms:
-Multi-communication is possible by multitasking such as calling and browsing, calling and SMS, etc.
-User will have their own UICC communication chips like GSM SIM card.
-UICC chip application like security and will be popular
-Users don't have to change their phone for global roaming.
- Timing:
-SKT and KTF commercialized HSDPA service in May 16 and June 30, 2006.
-HSDPA coverage will include 84 cities in the end of 2006
-Data speed will reach to 7.2Mbps in the end of 2007