Patent ID: 7970407

Claim:
Method of optimising the capacity of at least a WCDMA type mobile telephony network to create at least one additional service for which the data flow is predominantly in the downlink direction, by installing emission diversity within the network comprising a plurality of so called base transceiver stations, setting up communications with mobile communication terminals present in their zone of influence, called a cell, all of these cells defining the coverage zone of the network, the method being implemented by at least one computer system called a simulator, comprising memory means to store at least one algorithm controlling the following operations carried out by data processing means of the simulator: creation of data representing the forecast coverage of the network and the power necessary for the use of services by holders of mobile communication terminals present in the coverage zone of the network, these data being generated for at least one planned deployment date of the network and grouped in the form of at least one map for each date, so-called planned traffic map, stored in the memory means of simulator; calculation of the power available in each cell in the network in the absence of emission diversity, and then calculation of the power available in each cell in the network in the presence of emission diversity, these two calculations being dependant on the frequencies (called carrier frequencies), on which data transmissions within the network are based, and their results being stored in the memory means of the simulator; creation of at least one list of cells for which emission diversity has to be installed as a function of at least a number of transmission channels required for the service for which the flow is predominantly in the downlink direction, this list being stored in the memory means of simulator wherein said creation of said planned traffic map comprises: calculation of a signal attenuation level in each cell in the network, estimated from elevation and geographic data associated with each base transceiver station in the network, resulting in the creation of data representing attenuation levels expected at each point in each cell in the network, and calculation of the probability that a mobile communication terminal present in the coverage zone of the network can set up a communication with at least one base transceiver station, for each of the different services available within the network and for each cell in the network, this probability of access of terminals to services depending on a reception level expected at each point in each cell in the network, corresponding to a maximum power level of base transceiver stations weighted by said attenuations levels expected at each point in each cell in the network.