Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)

Measurement Counter

CH352D:CELL_INTERRAN_OUTCELL_HO_FAIL_RECONN_SUCC

Description

This counter provides the number of failed outgoing inter-RAT inter-cell handovers because the handover is terminated when the BSC receives the HO FAIL message from the MS. The Cause contained in the HO FAIL message can be:

Abnormal Release, unspecified
Abnormal release, channel unacceptable
Abnormal release, timer expired
Abnormal release, no activity on the radio path
Preemptive release
Handover failed, timing advance out of range
Channel mode unavailable
Frequency unavailable
Call already cleared
Semantically incorrect message
Invalid mandatory information
Message type non-existent or not implemented
Message type not compatible with protocol state
Conditional IE error
No cell allocation available
Protocol error unspecified
Other causes

Unit

Integer number or integer.

Measurement Point

At point C, as shown in Figure 1 and Figure 2, the counter is measured when the BSC receives the HO FAILURE message from the MS.

Figure 1 Measurement of the counters related to failed outgoing inter-RAT inter-cell handover (excluding directed retry)

Figure 2 Measurement of the counters related to failed outgoing inter-RAT inter-cell handover (directed retry)

Formula

Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) = [Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal Release, Unspecified)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal Release, Channel Unacceptable)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal Release, Timer Expired)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal Release, No Activity on the Radio Path)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Preemptive Release)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Handover Failed, Timing Advance out of Range)] +

[Failed Outgoing inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Channel Mode Unavailable)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Frequency Unavailable)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Call Already Cleared)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Semantically Incorrect Message)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Invalid Mandatory Information)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Message Type Non-existent or Not Implemented)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Message Type Not Compatible with Protocol State)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Conditional IE Error)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (No Cell Allocation Available)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Protocol Error Unspecified)] +

[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Other Causes)]