Atoll ACP Module (GSM/UMTS/LTE)
3GPP Multi-RAT
2
New ACP module
New Concept of ACP implemented as an integrated Function of the
Planning Tool
Easy to use & administrate
One GUI for RF Planning & ACP
Common HW and system infrastructure Common database
Automatic Optimisation of Network Parameters to increase Coverage and
Capacity
Site selection
Antenna selection & parameter optimisation (azimuth, height, mechanical & E tilt) Antenna Height
Power …
ACP Integration into Atoll
Fully integrated in the Atoll GUI and database
Additional data folder
4
Product Availability
Based on an ACP Technology developed by Softwave Wireless
Joint technology development with major European operator Field Tested & Proven
Option to the Atoll UMTS GSM LTE modules
Combined GSM/UMTS/LTE optimisation
Features
Pre defined Optimisation objectives
UMTS
• Network coverage (RSCP) • Pilot interference (Ec/Io) • Pilot Pollution • Soft Handover GSM • BCCH coverage • Cell Dominance LTE
• RS coverage (RSRP, RS C/N, Signal level..)
• RS CINR (RSRQ...)
All technologies : Overlap threshold
User defined Optimisation objectives
Flexible interface
Allows Cross layer or Cross technology objective
6
Features
Through automatic adjustments of selected network parameters
Antenna parameters • Type
• Azimuth
• Mechanical tilt and Electrical downtilt • Height
Transmit Power
• GSM – Transmission
power-• UMTS –Pilot
Power-• LTE –total
power-Site selection optimisation process
Candidate sites based on existing sites or station templates
User-driven optimisation process
Surface / traffic-based optimisation Convergence criteria
Usage of live network data
Tuned propagation models
Drive-test calibrated pathloss matrices
8
Optimisation Setup
-1-Optimisation parameters
Radio layers to be optimised (UMTS, GSM900, GSM1800, LTE) User can activate/deactivate the radio layer to be used/optimized Number of iteration (maximum number of potential changes )
Selection of Reconfiguration Area (cells within a specific geographical area, i.e. focus zone)
Definition of Custom zones for objective/target (Hot Spot/ group of clutter class)
Optimisation Setup
-2-Optimisation parameters
Cost control
• No Cost control (Optimisation only based on Quality)
• Compromise between Quality and Cost (Parameter Change Cost, Site Visit Cost..) • Site class can be defined, with specific reconfiguration costs (friendly sites..)
10
Optimisation Setup
-3-Reconfiguration
List of cells to be optimised (based on geographical area or cell list)
Parameter modification defined per cell or per parameter (e.g. antenna group, min/max downtilt angle)
• Antenna azimuth with asymmetric values and/or minimum angle separation between sectors • Antenna height optimisation requires path loss calculation by ACP
Optimisation Setup
-4-Reconfiguration
Parameter modification defined per cell (ie UMTS Pilot Power) “Display on” feature based on custom zones to select list of cell
Cell list can be exported/modified in Excel (ie “Min/Max” values, “Use” field) and re-imported in ACP Setup
12
Optimisation Setup
-5-Physical antenna creation based on Antenna pattern
Dual band antenna (GSM/UMTS) with common E tilt
Antenna definition
Antenna patterns to create physical antennas for electrical tilt optimisation
• Automatic creation based on antenna pattern name or Atoll antenna table • Manual allocation is also possible
Radome creation with merge of physical antennas (Dual/Tri band antennas) Antenna groups -group of radomes- for selection of best antenna type (within group allocated to each sector)
Optimisation Setup
-6-Objectives
Flexible Cost function allowing selection of optimisation criteria/constraints List of objectives
• Target zones for geographical areas
• Weighting between objectives (RSCP Coverage vs EcIo)
• Choice between Surface (Uniform traffic) or traffic based optimisation (Traffic Weighting) • All traffic maps defined in Atoll are supported
List of Pre -Defined objectives
Objective Condition
• Weighting is considered in order to give more priority to selected zones
• Objective thresholds per zone (Computation –default- , focus zone, custom zones)
14
Optimisation Setup
Objective Target
• % coverage on Target zone
• Optionally, filter on measurement points for Objective (i.e. consider only area for UMTS Objective where GSM signal level is low)
-8-Specific Objectives (i.e. UMTS)
• % coverage on Target zone
• Optionally, filter on measurement points for Objective (i.e. consider only area for UMTS Objective where GSM signal level is low)
16
-9-Optimisation Control
Key parameter evolution over time for objective
Coverage (RSCP, BCCH, LTE RS)
UMTS Ec/Io, LTE RS CINR...Cell Dominance
Graphical display in real time for
Quality
• Variation per Radio layer
Each Objective
• Initial/Final plots (Success/fail area for target)
18
Optimisation Results
Network-level parameter report
Initial/Final statistics and improvement per Objective Statistics provided for :
• Computation
• Focus zones
• Hot spot zones
Global report available in Excel format
Reconfiguration Statistics (Changes of parameters –tilt, azimuths, …)
Graphical Analysis
Final/Initial plot comparison for each Objective
Histograms provided for all zones
Initial/Final plots for area where target is reached.
Implementation Plan Analysis
Improvement vs. Changes Graphical analysis
Allows user to analyse global improvement according to the number of changes
Improvement also provided for each objective
• Coverage
• 3G Ec/Io, RS CINR... Allows to build a modification implementation
• Changes can be ranked by „profitability‟ (Change
Order)
• Most „profitable‟ changes will be applied first
20
Cell-level Analysis
ACP displays initial / final cell parameters
User-selectable modification list
User can commit modifications into Atoll or keep the results as an optimisation scenario in the Atoll project
New settings can be analysed using the Monte-Carlo simulator and Atoll prediction plots / analysis tools.
Commit Changes directly in transmitter/cell tables Restore original values in database
ACP Coverage plots
Output results available
Quality Analysis
• RSCP, Ec/Io
• BCCH Coverage...
Change Analysis
• Type of change
• Tilts, Azimuth, Power…
Best server Analysis
• Absolute values of parameter changes(Tilt, Azimuth...)
Objective Sector Analysis
• Improvement per cell
Objective Analysis
• Success/Fail area
22
Optimisation Results (Example)
EcIo Coverage (Initial / Final)
Statistics available for RSCP Coverage
Statistical results for all zones Initial /final coverage
Status map for RSCP Objective
• Display area before and after optimisation where target is reached or not (success/fail)
Site Selection Process with Atoll ACP
(UMTS or LTE examples)
24
Site Selection Process for UMTS- First Scenario
Site Selection between candidates for nominal site
Existing sites/sectors can be locked or removed
Site status flag can be defined in site table as custom field
Definition of groups of candidates (minimum / maximum number of sites) Cells can be optimised or not (reconfiguration for existing sites available during site selection)
Optimisation Results / First Scenario
Statistics report
Site/sectors selected within each group (here 1 amongst 2) Existing sites were locked (kept)
Number of cells reconfigured (if reconfiguration mode selected) Other statistics for zones (computation, focus or hot spots)
Implementation plan for site selected with reconfiguration for existing sites Statistics in term of number of sites
26
Implementation in database / First Scenario
Commit Results in database
Quick evaluation thanks to ACP coverage plots
Predictions can be recalculated in Atoll project once changes are committed in database
Example of prediction for final network configuration Initial and Final coverage
Site Selection Process for UMTS– Second Scenario
Deployment scenario with potential candidates, already defined in database
All 3G sites are supposed to be candidates (to be selected/activated) GSM sites :
• are already existing, and share same antennas (E tilt not linked) • can be reconfigured during UMTS site selection
ACP to choose the optimal sites to fulfil objectives (RSCP, EcIo) Minimum/maximum number of sites to consider within the area
Group of Candidate sites Existing GSM sites
28
Optimisation Results / Second Scenario
Statistics report
Total number of Site/sectors removed/added and selected Number of cells reconfigured (if reconfiguration mode selected) Other statistics (RSCP, EcIo…) for computation and focus zones
Implementation Plan Analysis / Second Scenario
Improvement vs. Changes Graphical analysis
Sites or sectors added or removed to fulfil requirements (Objectives) Changes of parameters (tilts…) if reconfiguration mode selected
30
Cell-level Analysis / Second Scenario
“Cell result” table
Candidate sites to be de-activated/activated in database (UMTS) List of changes for candidates if reconfiguration mode selected
List of changes for GSM sites if reconfiguration activated for this layer
Site Selection Process for LTE– Third
Scenario-Deployment scenario with potential candidates, either defined with their
coordinates in database or based on existing GSM/UMTS sites
Candidate site location (X/Y) for LTE can be :
• Added in site table as location only
• Imported as a list (text format) directly in ACP
• Automatically created from location of existing GSM or UMTS sites
Reconfiguration of Station template parameters is user defined
Atoll ACP associates candidate location with Station template types, according to geographical area (ie Urban/Rural station depending on area)
Common multi band antenna (UMTS/LTE) can be allocated to new LTE sites to link sectors
32
Optimisation Setup / Third Scenario
Principles of Site selection based on “New candidates”
ACP calculates path loss matrices of candidates at beginning of optimisation process (only once)
LTE Sites are always reconfigured when selected
Control of existing Layers (avoid degradation of quality) Flexible settings
• Zone Weighting (focus on specific area, ie dense urban) • Objectives weighting (RS Coverage vs RS CINR)
Optimisation progress / Third Scenario
Graphical display for objectives, radio layers, change type
User can stop based on parameter evolution (% Coverage, number of sites added..)
Automatic stop when maximum number of iteration reached
LTE Coverage and CINR evolution over time
GSM/UMTS sites upgraded to LTE and new LTE site added,
with reconfiguration of existing sites Initial and Final RS CINR Coverage showing where target is reached or not (Success/Fail for CINR threshold )
34
Optimisation results / Third Scenario
Final implementation
List of LTE sites selected, with potential reconfiguration of default template parameters (tilt...)
GSM and UMTS layer : list of changes for existing sites, with statistical results for all zones
Optimisation results / Third Scenario
Visual analyse with ACP plots and Atoll predictions
ACP results for planned LTE layer
36
