Selection Priority in 3G relation U2U - E///

[RFDude_PMA]

Hi all

I need some help, to understand the implications of changing selection priority.
When a node is created you assign neighbors to the cell and every relation have a selection priority number.
When the node start carrying traffic, some relations have more attempts than others but the relations with more attempts do not correspond to the order of values previously assign in selection priority.

So my question is ?Is this value important to be in the inverse order as the amount of attempts; 1 = the higher attemps and 10 or last = lower attempts?

If so, which are the implications?

Thanks

[RFDude_PMA]

hi

some one that can share their experience regarding U2U relations creations and optimization. The selection priority importance?

Thanks for the input..

[wolverine]

Hi friend,

When a UE is in connected mode it can only monitor 96 neighbour cells (32 intra, 32 inter, 32 IRAT). This is specified in the 3GPP specs.

Now when a UE is in soft/softer handover it is sent a new measurement control message informing it of all the new neighbours it has to measure. If the total is above 96 then the RNC has to truncate (cut down) the neighbour list. In order to help the RNC do this you can assign higher priority to some cells. This will ensure they are always on the top of the neighbour list and never get truncated.

Usually this is done on a geographic basis. So if you imagine a cell, it will have tier 1 neighbours around it (immediately adjecent to it), tier 2 neighbours further back, tier 3 etc. So all the tier 1 neighbours would get priority 1, all the tier 2 priority 2 etc.

All this is described in the ALEX CPI.