4G LTE Advanced

The Long Term Evolution (LTE) standard defined by 3GPP is a highly flexible radio interface that aims at bridging the gap between 3G and 4G standards. LTE Release 8 specification was completed in 2009 and triggered LTE service deployment by leading mobile network operators. It has set various target requirements to achieve higher system performance than HSPA in 3GPP Release 6. It has improved system capacity, cell edge user throughput and lower C/U plane latency, supported by introduction of new radio interface technologies, such as OFDM, frequency domain scheduling and MIMO. In the following year, LTE Release 9 has also been completed to extend various functionalities in LTE Rel.8. The area of enhancement includes closed subscriber group (CSG), self-organizing network (SON), and new functionalities such as location information service and MBMS (Multimedia Broadcast and Multicast Service).

LTE ADVANCED

To keep up with the today's rapidly growing traffic, especially by the wide spread of smart phone devices, it became necessary to achieve much higher level of system performance, while keeping the backward compatibility. Accordingly, the radio access interface specifications for LTE-Advanced has been developed in 2011. LTE-Advanced (LTE Rel.10 and beyond) sets a major important milestone in standardization where meets and exceeds requirements set by IMT-Advanced for 4G (International Mobile Telecommunications). The new requirements include spectral efficiency, higher bandwidth, and lower latency. To meet these competitive requirements, a series of new technologies have been introduced into LTE-Advanced, such as Carrier Aggregation, Enhanced MIMO, and CoMP (Coordinated multi-point transmission/reception). LTE-Advanced will enable higher than 1Gbps downlink bandwidth in addition to the existing LTE service and open a new era of true wireless broadband services in the near future. LTE-Advanced services will become available from leading mobile network operators around 2014. Additional features include non-contiguous spectra usage to further enhance the current LTE services.

SAI Technology has been heavily engaged in LTE product development from the early stages of LTE standards. SAI has demonstrated complete end to end system solutions for eNodeB and UE for LTE-Release 8 and 9. SAI is developing LTE advancements to fulfill new and future generations of LTE products. SAI is committed to delivery of LTE Advanced (Release 10 and beyond) products by March 2012.