UTRAN Neighbor List priority

[danikd]

Dear Colleagues,

Can someone explain possibility to define priority for neighbor relations in NSN UTRAN?

As far as I understand - there is no dedicated parameter, which controls this.

How to define neighbors priority in NSN?

Best regards

[indiaco]

I don't think you can do that in NSN UTRAN. You are looking for something like selectionpriority (E///), but there is nothing like that, as far as I know within NSN.
I got some old ppt (2010) file that covers the neighbour list combination and ordering within NSN, bellow some relevant parts.


•The neighbourhood lists for intra-frequency handover measurements can be composed like this:
•Step 1: Active set cells
•First the handover control sets the active set cells into the neighbour cell list.
•Step 2: Neighbour cells which are common to three active set cells
•During the second step of neighbour cell list combination the handover control selects those neighbour cells which are common to all three active set cells. If the total number of relevant neighbour cells exceeds the maximum number of 32 after the second step, the handover control removes in random order those surplus cells from the combined neighbour cell list which are selected during the second step
•Step 3: Neighbour cells which are common to two active set cells
•During the third step of neighbour cell list combination the handover control selects those neighbour cells which are common to two active set cells. If the total number of relevant neighbour cells exceeds the maximum number of 32 after the third step, the handover control removes in random order those surplus cells from the combined neighbour cell list which are selected during the third step.
•Step 4: Neighbour cells which are defined for only one active set cell
During the fourth step of neighbour cell list combination the handover control selects those neighbour cells which are defined for only one active set cell. If the total number of relevant neighbour cells exceeds the maximum number of 32 after the fourth step, the handover control removes those surplus neighbours from the combined neighbour cell list which are selected during the fourth step, starting from the neighbours of the weakest (CPICH Ec/Io) active set cell

Let me know if you want the whole file.
Hope it helped.

N.

[indiaco]

forgot to mention maybe you want to play around with the AdjsEcNoOffset to prioritize.

B.R.

N.

[scorpion]

Hi ..AdjsEcNoOffset will do some help in idle mode for 2G TO 3G ?

[indiaco]

Hi ..AdjsEcNoOffset will do some help in idle mode for 2G TO 3G ?

I'm not sure what do you mean mate...
I haven't worked with 2G nsn in a while but I don't think that is a GSM parameter.

B.R.

[indiaco]

I 've just taken a look at an old nokia document, if what you are targeting is 2G -> 3G cell resel, you want to take a look at the info bellow:

qSearchI (QSRI)(SEG)(0..15)(15) Threshold to search WCDMA RAN cells
fddQoffset (FDD)(SEG)(N,-28..28)(N) FDD cell reselect offset (N: -¥ dB)
fddQMin (FDM)(SEG)(-20..-13)(-20) Minimum EC/I0 threshold for WCDMA cell reselection
Uarfcn (FREQ)(UADJC)(0..16383) downlink carrier frequency of WCDMA adjacent cell
Scramblingcode (SCC)(UADJC)(0..511) downlink scrambling code of primary common pilot channel
of adjacent WCDMA cell
txDiversityInd (DIV(UADJC)(Y/N)(N) Indicator for Downlink TX diversity of adjacent WCDMA cell