Description  Claims  Drawing  Cited references 

WO2009052733A1   [0003] 
WO2009148258A2   [0005] 
EP2683211A1   [0006] 
WO62141483A   [0018] 
WO62213450A   [0018] 

3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Architecture enhancements for Cellular Internet of Things (Release 13)   [0004]