Acp by atoll
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Transcript of Acp by atoll
Automatic Cell Planning Module
Using Atoll2016
Radio Planning Erbil
Content• Introduction• 2. Parameters Used by ACP• 3. Network Reconfiguration Process• 4. Site Selection Process• 5. Other Topics
Parameters Used by ACPAutomatic optimisation tool for GSM, UMTS, CDMA networks
To improve existing networks by tuning parameters that can be easily changed remotely• Antenna electrical tilt• Power (BCCH for GSM, Pilot for UMTS)
To optimise a network still in the planning phase by• Selecting antennas• Changing the antenna azimuth• Changing the mechanical down tilt of the antenna• Changing the antenna height• Selecting sites among a list of candidate sites
Combined GSM/UMTS/LTE optimisation can be performed
Parameters Used by ACPPrinciple
Optimisation of quality indicators (GSM “BCCH Coverage & Dominance of best server” UMTS “ RSCP & CPICH Ec/Io”)
By automatic adjustments of network parameters• Power (BCCH for GSM)• Antenna parameters:
Type of antenna Azimuth Mechanical down tilt Electrical down tilt Height
Parameters used by ACPFocus zone= Area where the optimisation will be performed (by default)
Computation zone= Zone used to compute statistics on performance indicators (by default)
RecommendationsCreating a Computation Zone:• Used to define the default area wherethe ACP calculates statistics onperformance indicators
Creating a Focus Zone:• Used to define the default area in whichare the cells to be optimised
To save the defined optimisation parameters and run the optimisation later
Creating an Optimisation Setup
Selection of layers to be optimisedLayer(s) configurationSeveral in case of Multi-RAT networks (GSM+UMTS)
There for Erbil we just used for GSM
Selection of zones to be optimisedZones definition/ Possibility to definezones to be specificallyoptimized,
Choice between quality or financial cost based optimisation
No cost control: the optimisation is only based on quality Useful when planning a new network
Possibility to limit the financial cost of the optimisation:• Maximum financial cost allowed• Compromise between the financial cost and the quality Useful when
improving an existing network
Selection of transmitters/cells to be optimised
To define Cells’ Optimisation parameters (Subcells power in GSM, Pilot power in UMTS)
To define cells, Transmitter , sites, location of site , parameter of the recommended site “Physical parameters, bands, …)
Load balancing (Optional)
Define the threshold of Signal for improvement
Traffic can be considered as uniform (evenly spread on each service area) or, generated from traffic maps
“Changes” tab: Type and number of changes
The optimisation process can be paused or stopped early
Graphs” tab: Variation of performance objectives in real time with iterations
Quality” tab: Coverage and Quality improvements (variations)
“Objectives” tab: To see at a glance if the objective is achieved or not
Results List of changes ranked from the change with the most effect to the change with the least effectSelected changes are displayed in green
Results
Revert the network to its state before the optimisation was runApply the set of selected changes
Transmitters/cells with parameter changes are displayed in greenInitial and final cell parameters displayed
BCCH Signal Level (Intial Vs Final)
Prediction of the optimised Zone Before
Prediction before we commit the recommended parameter from the ACP
Prediction of the optimised Zone After
Prediction After we commit the recommended parameter from the ACP
Thanks