CHANGING COMMUNICATION PATHS

摘要

When a communication path between a mobile station (1) and a first telecommunication network (A) is to be replaced with a communication path between the mobile station and a second telecommunication network (B), a toggling procedure or dual scheduling mode is used. In 5 this procedure the mobile station continues, during a transitional period, to communicate using the communication path with the first network and in time intervals between periods in which the communication with the first network is scheduled it performs signaling with the second network to set up a communication path with the second network. After having set up the communication path with the second network the mobile station instead uses this communication path. This method may give a minimum interruption of the communication for the mobile station. A similar method can be used also when the mobile station only requires some signaling with the second network.