nts were done in the framework of European Cooperation in the Field of Scientific and Technical Research, also called COST. The validity for this extended Okumara-Hata model is Frequency f: 150-2000 MHz Distance R: 1-20 km UE height : 10-200 m MS height: 1-10 m The correction factor C is given as for suburban areas Correction factor (2.48) 4.78 log2(f)-18.33 log1o(f)+ 44.94 for rural areas This correction factor is added to obtain the actual losses in the WCDMA environment. Similarly for the Walfish-Ikegami model, the COST model is applied, which is based on the typical antenna placements and has the validity range Frequency f: 800-2000 MHz BS height hbs: 4-50 m UE height hms: 1-3 m Distance d: 0.02-5 km 2.6 Capacity Planning 2.6.1 Capacity Planning in GSM Networks The preliminary capacity planning has already been done in the dimensioning phase of the network planning process. In that phase only rough figures in the area type level were estimated without going into the capacities of individual base stations or cells. The planning parameters came from customer requirements and the estimated number of users. The user estimates are for every network roll-out phase. The capacity requirement per user is different depending on the user profile. The dimensioning can be Radio Network Planning and Optimisation simplified by having one user profile per area type; i.e. all the users inside the same area type have a similar user profile. The user profiles define the average usage as well as the busy hours. The capacity has to be planned based on the maximum simultaneous usage. In the capacity planning phase a detailed capacity per cell level is estimated. The prior task was select the base station locations and calculate the coverage area using actual BTS parameters. The capacity allocation is based on these coverage maps and traffic estimates, which can be a separate layer on the map of the planning tool. The coverage dominance map provides the information for the cell borders. As mentioned, the maximum simultaneous usage 