WCDMA Neighbor Priority

WCDMA Neighbor Priority

Following is the recommended procedure for the implementation of priorities for both UtranRelations and IRAT Relations

Initial Priority Settings

Initial priority settings can be done based on the position of each site and their antenna directions with respect to the concerned 3G cell.

1. Define two or three tiers based site positions. For example

2. Define neighbors and priorities based on the tier and the antenna directions

• For Tier ‐ 01 defined neighbors selectionPriority = 1 or 4



Some guidelines are given below

Define all co‐located neighbors with selectionPriority = 1 Define selectionPriority = 1 for Tier‐01 neighbors with antennas directed to each other.

For example for the cell B, the cells Z,I,K and P can be defined with selectionPriority = 1 Define selectionPriority = 4 for Tier‐01 neighbors with antennas directed in the same

direction. For example for the cell B, the cells M,Y,J and Q can be defined with selectionPriority = 4

Tier – 03

Tier – 02

Tier – 01

Concerned Site

A

BC

P

QR

L

MN X

YZU

VWI

JK

D E

F

Neighbors with antennas pointing away from each other will not be defined as neighbors

Define selectionPriority = 4 for Tier‐02 neighbors with antennas directed to each other. For example for the cell B, the cells D and W can be defined with selectionPriority = 4

Define selectionPriority =9 for Tier‐02 neighbors with antennas directed in the same direction. For example for the cell B, the cells V,E and F can be defined with selectionPriority = 9

Priority Fine Tuning

Later based on drive‐tests the priorities can be changed to priorities a neighbor relation you want. For example our initial setting for neighbor B – M is 4 and if these cells have high overlap and for some area these two are the only cells with enough received signal level then selectionPriority can be changed to 2 or 3 to priorities this relation over selectionPriority = 4. Here comes the advantage of having initial priority of 1, 4 or 9. Because here we can priorities one relation, without changing the priorities of all the other defined neighbors.

Also we can use Handover Statistics for our later selectionPriority tunings.

WCDMA Neighbor Priority

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