Patent ID: 8180344

Claim:
A method in a common 2G/3G network that includes a common Core Network (CN) connected to a 2G controlling entity for communicating with dual mode mobile stations and to a 3G controlling entity for communicating with dual mode mobile stations, the method comprising the steps of: applying a 3G camping strategy, directing a service request from a dual mode mobile station in the common 2G/3G network for a 2G-support service to the 2G network if the dual mode station is camped in the 3G network, and instructing the dual mode mobile station, when connected to the 2G network, to perform cell reselection evaluation of 3G network cells only when a signal strength detected in the 2G network is below a predetermined threshold, wherein the instructing step includes transmitting a first parameter, indicative of the predetermined threshold, that is set individually per mobile station and at least a second parameter that is set individually per mobile station, wherein the at least second parameter indicates when the dual mode mobile station should start to measure on signal strength on the 3G network.