A SYSTEM AND A METHOD RELATING TO PACKET DATA COMMUNICATION

摘要

The present invention relates to a cellular communication system supporting packet data communication including a number of switching arrangements for switching speech and/or circuit switched data, and a number of packet data nodes (1), each controlling the packet data communication in a number of packet paging areas (10). Means are provided for calculating which packet data communication channels are to be used for mobile stations after updating of a cell. Furthermore means are provided for keeping information about which cells have been updated and when a cell is updated, paging of a mobile station (MS1) in a stand-by state is performed by sending a number of first paging messages from the packet data node using the calculated packet data communication channel resources in all cells (C1-C12) within the packet paging area (10) in which the mobile station (MS1) is registered. If the mobile station is not found, a second paging message is sent out to all cells which have been updated.