Section: 4.3.1.3.2 Successful outgoing handovers per handover cause
Content: This measurement provides the number of successful outgoing handovers per handover cause and LTE target cell specific. CC. Receipt of a RRC message RRCConnectionReconfigurationComplete sent from the UE to the target (=source) eNB, indicating a successful outgoing intra-eNB handover (see TS 36.331[ Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification ]  [8]), or receipt at the source eNB of UE CONTEXT RELEASE [10] over the X2 from the target eNB following a successful inter-eNB handover, or if handover is performed via S1, receipt of UE CONTEXT RELEASE COMMAND[9] at the source eNB following a successful inter-eNB handover. Each RRCConnectionReconfigurationComplete, X2AP UE CONTEXT RELEASE message or S1AP UE CONTEXT RELEASE COMMAND message received is added to the relevant per handover cause measurement, the possible causes are included in TS 36.413[ Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP) ]  [9] . In case of CA, this succesful handover is only added to same the neighbour cell relation that the corresponding attempted handover is counted at (i.e., the same neighbour cell relation that the measurement defined in subcluse 4.3.1.3.1 is counted at). The sum of all supported per cause measurements shall equal the total number of outgoing intra-RAT handover events. In case only a subset of per cause measurements is supported, a sum subcounter will be provided first. Each measurement is an integer value. The number of measurements is equal to the number of causes supported plus a possible sum value identified by the .sum suffix. HO.OutSuccTarget.Cause where Cause identifies the cause for handover. EUtranRelation Valid for packet switched traffic EPS