Successful TCH Seizures in TCH Handovers (Traffic Channel)

Measurement Counter

K3013B:CELL_KPI_TCH_HO_SUCC_TRAF

Description

This measurement provides the number of successful TCH (traffic channel) seizures by the MS during TCH handovers.

Unit

Integer number or integer.

Measurement Point

Internal intra-cell handover The measurement is triggered when the BSC receives the HO DETECT message from the target BTS (see measurement point E in Figure 1and Figure 2). The measurement is based on the channel type.

Figure 1 External handover procedure (excluding directed retry)

Figure 2 External handover procedure (directed retry)

Incoming external inter-cell handover The measurement is triggered when BSC2 receives the HO DETECT message from the target BTS (see measurement point E in Figure 3and Figure 4. The measurement is based on the channel type.

Figure 3 Internal inter-cell handover procedure (excluding directed retry)

Figure 4 Internal inter-cell handover procedure (directed retry)

Formula

Successful TCH Seizures in TCH Handovers (Traffic Channel) =

[Internal Intra-Cell Handover Detection Messages Received by BSC (TCHF)] +

[Internal Intra-Cell Handover Detection Messages Received by BSC (TCHH)] +

[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (TCHF)] +

[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (TCHH)] +

[Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHF)] +

[Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHH)]