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