Section: 4.1.4.1 Mean RRC connection setup time
Content: This measurement provides the mean time per establishment cause it takes to establish an RRC connection. DER (n=1). This measurement is obtained by accumulating the time intervals for every successful RRC connection establishment between the receipt of a RRCConnectionRequest and the corresponding RRCConnectionSetupComplete message by the eNodeB/RN over the granularity period. The end value of this time will then be divided by the number of successful RRC connections observed in the granularity period to give the arithmetic mean. The accumulator shall be reinitialised at the beginning of each granularity period. The measurement is split into subcounters per establishment cause, and the possible causes are included in TS 36.331[ Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification ]  [8]. Each measurement is an integer value (in milliseconds). The measurement name has the form RRC.ConnEstabTimeMean.Cause where Cause identifies the establishment cause EUtranCellFDD EUtranCellTDD Valid for packet switching. EPS