Post on 29-Dec-2015
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ATOLL NEIGHBOURS
Neighbour Features in Atoll
Definitions
Importing Neighbours
Planning Intra-technology Neighbours
Planning Inter-technology Neighbours
Displaying Neighbour Relations on the Map
Modifying Neighbour Relations Manually
Exporting Neighbour Relations
© Forsk 2011 Slide 2 of 27 Confidential – Do not share without prior permission
Definitions
Reference Cell
The cell to which you are allocating neighbours
Possible Neighbours
The cells that fulfil the requirements to be neighbours
Intra-technology Neighbours
The cells defined as neighbours that use the same technology as the reference cell
E.g., UMTS-UMTS, GSM-GSM, LTE-LTE
Inter-technology Neighbours
The cells defined as neighbours that use a technology other than the reference cell
technology
E.g., UMTS-GSM, UMTS-LTE, GSM-LTE
© Forsk 2011 Slide 3 of 27 Confidential – Do not share without prior permission
Importing Neighbours (1/2)
Possibility to copy/paste or to import a list of neighbours
Prerequisites
A text file with at least 2 columns
• Name of the reference cells
• Name of neighbour cells
© Forsk 2011 Slide 4 of 27 Confidential – Do not share without prior permission
Importing Neighbours (2/2)
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Planning Intra-technology Neighbours (1/11)
Possibility to define neighbourhood constraints to be considered during the automatic
neighbour allocation
List of neighbour relations you may force
or forbid
© Forsk 2011 Slide 6 of 27 Confidential – Do not share without prior permission
Planning Intra-technology Neighbours (2/11)
Allocation Parameters
Maximum Number of Neighbours
• Global value for all cells or value specified for each cell
Maximum Inter-site Distance
Allocation Strategy Based on the Overlapping of Cell Coverage
© Forsk 2011 Slide 7 of 27 Confidential – Do not share without prior permission
Planning Intra-technology Neighbours (3/11)
GSM Technology
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Coverage
conditions
Overlapping
criterion
Calculation
options
Do not select the option if
you want to keep existing
neighbours
Start allocation
Planning Intra-technology Neighbours (4/11)
GSM Technology
Overlapping Criterion
% min covered area is defined by the formula : (SA ∩ SB) / SA where :
SA is the coverage area of A restricted by HO start and HO end
SB is the best server area of Cell B B best server area
(Candidate)
A best server area
(Reference)
A
B
Minimum
BCCH of A
Best signal level
for A - HO start
Best signal level
for A - HO end
© Forsk 2011 Slide 9 of 27 Confidential – Do not share without prior permission
Planning Intra-technology Neighbours (5/11)
UMTS Technology
Intra-carrier neighbours: neighbours which perform handover using the same carrier
Inter-carrier neighbours: neighbours which perform handover using a different carrier
© Forsk 2011 Slide 10 of 27 Confidential – Do not share without prior permission
Coverage conditions
Overlapping
criterion
Calculation options
Do not select the option if
you want to keep existing
neighbours
Start allocation
Planning Intra-technology Neighbours (6/11)
UMTS Technology – Intra-carrier Neighbours
Overlapping Criterion
% min covered area is defined by the formula : (SA ∩ SB) / SA where :
SA is the best server area of cell A. Cell A is the first one in the AS
SB is the area where cell B can enter the as of cell A B best server area
(Candidate) A best server
area
(Reference) B
Minimum
Ec/Io for
A
A SA ∩ SB :
Area where :
Ec/Io(B) ≥ Ec/Io(A) – Ec/Io
margin(A)
© Forsk 2011 Slide 11 of 27 Confidential – Do not share without prior permission
Planning Intra-technology Neighbours (7/11)
UMTS Technology – Inter-carrier Neighbours
Overlapping Criterion (carrier saturation)
% min covered area is defined by the formula : (SA ∩ SB) / SB where :
SA is the best server area (on carrier 1) + handoff area of cell A
SB is the best server area of cell B (on carrier 2) B best server area
(Carrier 2 -
candidate) A best server area
(Carrier 1 -
reference) B
Minimum
Ec/Io for
A
Best Ec/Io for
A - Ec/Io
margin
A
© Forsk 2011 Slide 12 of 27 Confidential – Do not share without prior permission
Planning Intra-technology Neighbours (8/11)
UMTS Technology – Inter-carrier Neighbours
Overlapping Criterion (out of carrier coverage)
% min covered area is defined by the formula : (SA ∩ SB) / SB where :
SA is the coverage area of A + Ec/Io margin (and best server on carrier 1)
SB is the best server area of cell B (on carrier 2)
B best server area
(Carrier 2 - candidate)
Minimum Ec/Io for A
and A best server
area (carrier 1 -
reference)
Minimum Ec/Io for A
+ Ec/Io margin
A
B
© Forsk 2011 Slide 13 of 27 Confidential – Do not share without prior permission
Planning Intra-technology Neighbours (9/11)
LTE Technology
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Coverage conditions
Overlapping criterion
Calculation options
Do not select the option if
you want to keep existing
neighbours Start allocation
Planning Intra-technology Neighbours (10/11)
LTE Technology
Overlapping Criterion
% min covered area is defined by the formula : (SA ∩ SB) / SA where :
SA is the coverage area defined by the RSRP Margin (orange ring below)
SB is the best server area of cell B
© Forsk 2010 Slide 15 of 27 Confidential – Do not share without prior permission
Cell B best reference
signal level area
(candidate) Cell A best reference
signal level area
(reference)
Cell A
Best server area
Cell B
Best server area
Cell A reference
signal threshold
(from Min RSRP)
RSRP Margin
Planning Intra-technology Neighbours (11/11)
Allocation Result
Sorted List of Neighbours with Allocation Reasons and Importance Value (0-1)
© Forsk 2011 Slide 16 of 27 Confidential – Do not share without prior permission
Commit selected
neighbours only
Allocation results
Sort and filtering tools
Summary report listing existing, new
and removed neighbours
Planning Inter-technology Neighbours (1/5)
Possibility to define neighbourhood constraints to be considered during the automatic
neighbour allocation
© Forsk 2011 Slide 17 of 27 Confidential – Do not share without prior permission
List of neighbour relations you may force
or forbid
Planning Inter-technology Neighbours (2/5)
Allocation Parameters
Maximum Number of Neighbours
• Global value for all cells or value specified for each cell
Maximum Inter-site Distance
2 Allocation Strategies
• Based on distance
• Based on overlapping between coverage areas
© Forsk 2011 Slide 18 of 27 Confidential – Do not share without prior permission
Planning Inter-technology Neighbours (3/5)
Inter-technology Neighbour Automatic Allocation
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Coverage conditions
Overlapping criterion
Calculation options
Do not select the option if
you want to keep existing
neighbours
Start allocation
Planning Inter-technology Neighbours (4/5)
Coverage Conditions
GSM
• BCCH signal level
• Area where the BCCH signal level of the cell is either the highest one or within a margin of the highest
one
UMTS
• Pilot quality (Ec/I0)
• Area where the cell is either the best server in terms of pilot quality or a cell of the active set
LTE
• Reference signal level
• Area where the reference signal level of the cell is either the highest one or within a margin of the
highest one
© Forsk 2011 Slide 20 of 27 Confidential – Do not share without prior permission
Planning Inter-technology Neighbours (5/5)
Allocation Result
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Sort and filtering tools
Commit selected
neighbours only
Allocation results
Summary report listing existing, new
and removed neighbours
Displaying Neighbour Relations on the Map (1/3)
Select the icon in the toolbar and click a transmitter on the map
© Forsk 2011 Slide 22 of 27 Confidential – Do not share without prior permission
Displaying Neighbour Relations on the Map (2/3)
Additional Display Options
Click the icon from the toolbar
Inwards link: site22_3(0) is
neighbour of site9_3(0)
Symmetric link: site10_2(0) is
neighbour of site22_3(0) and
vice-versa
Outwards link: site1_2(0) is
neighbour of site22_3(0)
Direction of the neighbour
relation
© Forsk 2011 Slide 23 of 27 Confidential – Do not share without prior permission
Displaying Neighbour Relations on the Map (3/3)
Possibility to display coverage area of cell’s neighbours according to any neighbour
characteristics on the map
Calculate and display a “coverage by transmitter” on the map
Display neighbour relations of the desired transmitter
Click the icon from the toolbar
© Forsk 2011 Slide 24 of 27 Confidential – Do not share without prior permission
Modifying Neighbour Relations Manually
Possibility to add/remove neighbour relations on the map using the ctrl and shift
shortcuts
Possibility to add/remove neighbours in the transmitter property dialogue
© Forsk 2011 Slide 25 of 27 Confidential – Do not share without prior permission
List of transmitters within a 30 km
radius from the selected one
(sorted in a ascending inter-site
distance order)
Neighbour list of BRU038_G2
Exporting Neighbour Relations
Possibility to Copy/Paste or to Export the List of Neighbours
© Forsk 2011 Slide 26 of 27 Confidential – Do not share without prior permission
THANK YOU!