New 3G LTE UE Stack
New 3G LTE UE Stack
6th November , 2009
 |
US : A new 3G LTE User Equipment ( UE ) protocol stack has been released. The new Version 8 stack from L&T Infotech is aimed at helping companies reduce their development timescales when bringing 3G LTE devices to market. The new 3G LTE UE protocol stack ( schematic above ) has been developed by L&T Infotech.
The 3G LTE protocol UE stack complies with 3GPP requirements and consists of NAS (Non Access Stratum ) and AS (Access Stratum ) layers. 3G LTE protocol UE stack fully complies with 3GPP Release 8 including the 3G LTE elements.
The company has undertaken comprehensive testing its 3G LTE UE stack with the Rhode and & Schwartz CMW500 virtual 3G LTE test system using both LLAPI and MLAPI and interfaces.
The implementation is agnostic of underlying operating system and hardware. The data plane (MAC, RLC and PDCP) is extensively tested for all 8 Data Radio Bearers (DRBs) at UE simultaneously, with both Tx and Rx path configurations for various combinations of UM and AM mode. The Control Plane (RRC and NAS) supports L2/L1 configurations, bearer establishment, cell selection and mobility procedures.
Mr. Sudip Banerjee, Chief Executive Officer, L&T Infotech. Said "L&T Infotech believes that LTE is the clear evolutionary path for existing technologies of 3GPP origin and also for 3GPP2, CDMA technology for meeting the IMT-Advanced requirements. Hence, L&T Infotech is committed to provide products and solutions to reduce time-to-market of LTE devices to operators, OEMs and chipset manufacturers,"
LTE devices could be of multi-mode device type, where LTE could reside alongside the existing 3G protocol stack or as standalone LTE devices where it could be packaged as USB dongles. Based on the form factor and applicability of the LTE stack, RRC and NAS layer is kept modular so that existing 3GPP technology stack could leverage the existing NAS implementation to access the different Radio Access Technology stacks. As L&T Infotech understands highly demanding throughput and timing constraints of LTE UE, the modules of L2 are kept modular to provide the flexibility in placing the time-critical components close to hardware and PHY implementations
Other News