AS334A:CELL_HO_TA_OLCELL_ULCELL_AVG
AS334B:CELL_HO_TA_OLCELL_ULCELL_AVG
After receiving a valid MR from the MS or a valid pre-processed MR from the BTS, the BSC makes a handover decision. If a handover from the OL subcell to the UL subcell is required, the counter Timing Advance during Concentric Cell Handover Initiation (Overlay to Underlay) is incremented by the TA value in the MR. In a granularity period, the value of Mean Timing Advance during Concentric Cell Handover Initiation (Overlay to Underlay) is the result of dividing the accumulative Timing Advance during Concentric Cell Handover Initiation (Overlay to Underlay) by Internal Intra-Cell Handover Requests (Overlay to Underlay).
After receiving a valid MR from the MS or a valid pre-processed MR from the BTS, the BSC makes a handover decision. If a handover from the OL subcell to the UL subcell is required, the counter Timing Advance during Concentric Cell Handover Initiation (Underlay to Overlay) is incremented by the TA value in the MR. In a granularity period, the value of Mean Timing Advance during Concentric Cell Handover Initiation (Underlay to Overlay) is the result of dividing the accumulative Timing Advance during Concentric Cell Handover Initiation (Underlay to Overlay) by Internal Intra-Cell Handover Requests (Underlay to Overlay).
These counters reflect the TA in the concentric cell when a handover occurs.
TA.
At the end of the granularity period, this counter is calculated by using the following formula.
Mean Timing Advance during Concentric Cell Handover Initiation (Overlay to Underlay) = Timing Advance during Concentric Cell Handover Initiation (Overlay to Underlay)/Internal Intra-Cell Handover Requests (Overlay to Underlay)
Mean Timing Advance during Concentric Cell Handover Initiation (Underlay to Overlay) = Timing Advance during Concentric Cell Handover Initiation (Underlay to Overlay)/Internal Intra-Cell Handover Requests (Underlay to Overlay)