Radio Planning Process:
the aim of the network planning is to provide a cost effective solutions for the radio networks in terms of coverage, capacity and quality of service. the network planning process and design criteria vary from region to region depending on the dominating factor could be capacity or coverage.
PLANNING PROCESS Overview:
the workflow of the planning process is illustrated as shown below :
1-definition of requirement
2-radio propagation model tuning activity
3-Nominal cell planning
4-site search and survey
5-radio network design
6-initial tuning
-Definition of the Requirement: it is necessary to define the performance requirements of the WCDMA network to be implemented.
-Radio propagation model tuning activity: in order to obtain more reliable radio propagation predictions.
-Nominal cell planning: requirements defined in first step is the input of this stage to determine the number of sites needed to cover this area .
-Site search and survey: the planner have to find the suitable place for the site to achieve the needed requirements .
-Radio network design:
*downlink common channel power allocation.
*frequency planning in case of cells with more than one carrier
*code planning.
*parameter involved in handover algorithm.
-Initial tuning: the default setting for cell data parameter and site configuration which is optimized .
Coverage requirements :
for each area: the coverage priority is normally identified according to land usage ,population distribution or vehicular distribution. The high traffic areas where a continuous coverage has to be guaranteed are for example :high ways, business areas, hot spots like airports, train stations
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Capacity Requirements:
for each area the number of subscriber and their service profiles must be identified and predict the increments in the populations in the next few years for your plane. And the traffic volume per subscriber and service type
Service Requirements:
the types of service offered must be given for each area , the estimated usage of each service should be given
Model Tuning:
The model tuning is performed in order to obtain more reliable Radio propagation predictions..Measured and predicted signal strength samples are compared and the error is optimized
Nominal cell planning:
A nominal cell planning show the mast sites of the base stations, the coverage of each antenna and the distribution of frequencies among the cell.
CCQ model:
designing UMTS network is a multi dimensional process due to large number of different design requirements and system parameter
first it is necessary to estimate the number of cell sites , the type of base stations and their configuration. In order to attain the number of cell sites and their configurations we need to assess the coverage , capacity and quality requirements together with the type of area to be covered, such as a dense urban. so we can start dimensioning process
check the other parts for the 3G Network Planning in details