SUMMARY OF THE HANDOVER CAUSES ALGORITHMS ALCATEL-LUCENT

HO RELATED WITH INDOOR CELL:

FROM UPPER --> INDOORcause 14: High level in neighbour lower or indoor layer cell for slow mobile from upper to indoor

FROM INDOOR --> OTHER INDOORCause 12: PWR BDGT from indoor to indoor or from indoor to upper if MS_SPEED=FASTcause 23: Traffic handover from Indoor to indoor if EN_MULTIBAND_PBGT_HO=disable

FROM INDOOR --> OTHER INDOOR OR UPPERCause 2: Too low quality uplink from indoor to indoor or upperCause 3: Too low level uplink from indoor to indoor or upperCause 4: Too low quality downlink from indoor to indoor or upperCause 5: Too low level downlink from indoor to indoor or upperCause 6: Too long distance from indoor to indoor or uppercause 7: Bad SACCH frames un-decoded if Cell is MICRO and indoor to other indoor or uppercause 24: General capture handover from indoor to upper

FROM INDOOR --> SAME INDOOR (other TimeSlot)Cause 15: Too high interference level uplink from Indoor to same indoorCause 16: Too high interference level downlink from Indoor to same indoorCause 29: TFO HO from indoor to same indoorCause 30: Move from PS to CS zone from indoor to same indoor

===========================================================HO causes for multi-band networkscause 21 : high level in the neighboring cell in the preferred band

HO causes for concentric cellscause 10 : too low level on the uplink in the inner zonecause 11 : too low level on the downlink in the inner zonecause 13 : too high level on the uplink and the downlink in the outer zone - These causes will be used within multi-band cells

===========================================================

Emergency intercell handoverscause 2 : too low quality on the uplinkcause 3 : too low level on the uplinkcause 4 : too low quality on the downlinkcause 5 : too low level on the downlinkcause 6 : too large distance between the MS and the BTS

May be triggeredFrom any cell type / band / layer / zoneTowards any cell except the serving oneIf the MS is connected to the inner zone of a multi-band cell, the serving cell isa candidate

===========================================================Emergency intracell handoverscause 15 : high interference on the uplink (intra-cell HO)cause 16 : high interference on the downlink (intra-cell HO)May be triggeredFrom any cell type / band / layer / zoneTowards the same cell

===========================================================

Emergency handovers specific to concentric cellsIntracell handovers from an inner to an outer zonecause 10 : too low level on the uplink in the inner zonecause 11 : too low level on the downlink in the inner zone

May be triggered From the inner zone of a concentric cell Towards the outer zone, same cell