GNSS-assisted acquisition technique for LTE over satellite

Abstract

In this chapter, we describe an acquisition method for LTE over satellite, based on the standard 3GPP LTE PRACH waveform and processing procedures. The method is applicable when the user terminals are equipped and can utilize a global navigation satellite system (GNSS, e.g., GPS) receiver. The method requires modification of LTE user equipment (UE) only in software at layer 2 and reuse the PRACH preamble processing (detection and estimation) at the base station (eNodeB).