Advancement of FAPI Error Indication Messaging for 4G Systems

Abstract

Fast Application Programming Interfacebetter known as FAPI is a standard in which exchangeof information between the two layers is performs viacertain message structures. 4G systems of today such asLong Term Evolution (LTE)can make use of this FAPIstandards in order to exchangeconfiguration betweenthe different Layers as well as providing indications anderrors. This paper focuses on introducinganAdvancement in the Error Indication Messages for aLTE based system which would relay the informationfrom Layer 1 to Layer 2 about the configurations whichhave encountered an error and also providing details ofthe area of code in which the issue was found in Layer1. The Layer 2 can utilize this information to avoid suchconfigurations to be sent down to Layer 1 and to insteadsend the next best known configuration and to avoidany crash scenarios. These details can also provide adetailed level of debugging on the Layer 1 levelreducing the debugging time allowing more efficiencyby detecting and pinpointing issues or bugs.