Evolution of Positioning Techniques in Cellular Networks, from 2G to 4G

Table 3

LPPa functions and elementary procedures.

Function	Elementary procedure
E-CID Location Information Transfer	E-CID Measurement Initiation
	E-CID Measurement Failure Indication
	E-CID Measurement Report
	E-CID Measurement Termination
OTDOA Information Transfer	OTDOA Information Exchange
Report of General Error Situations	Error Indication