4G TECHNOLOGY

Long Term Evolution (LTE) is a new technology of high performance air interface for cellular mobile communication system. This is a step towards 4th generation (4G) radio technology designed to enhance the capacity and speed of the mobile telephone network.

Long Term Evolution (LTE) is defined in the 3GPP (Third Generation Partnership Project) Release 8 and also the evolution of 1xEV-DO technology as part of the roadmap 3GPP2 standards. This technology is claimed to be designed to provide a better spectrum efficiency, increased radio capacity, latency and lowers operating costs for operators and quality of broadband services to mobile users. The first release of LTE is considered pre-4G system, while the release of LTE Advanced is a candidate in the development of 4G standards.

LTE is the technology of mobile broadband with an average speed of 20 to 40 Mbps and 150 Mbps maximum. This technology will be the last mobile broadband technology after HSPA Evolution. Indra of Ericsson Indonesia, said: "LTE technology is not much different speed by HSPA technology speeds up to 21 Mbps.

Significant modification of the previous technology is considered in 3 main things, the air interface, radio network and core network. In the future promises users will be able to download and upload high definition video and other media content, access e-mail with large attachments and join video conferences anywhere, anytime.

The main advantage to LTE is a high throughput, low latency, plug and play, FDD andTDD in the same platform, an enhanced end user experience and simple architecture resulting in lower operating costs. LTE will also support seamless flow through the network of cell towers with old technology such as GSM, cdmaOne, W-CDMA (UMTS) and CDMA2000.

LTE can operate in one of the cellular spectrum bands allocated to the standards included in the IMT-2000 (450, 850, 900, 1800, 1900, 2100 MHz) and the spectrum of new bands such as 700 MHz and 2.5 GHz.