Patent ID: 6438383
Filing Date: 2002-08-20
Classification: H04W

Abstract:
A cellular communication system supporting packet data communication, comprising:a number of switching arrangements for switching speech and/or circuit switched data, a number of packet data nodes, each controlling/serving the packet data communication in a number of packet paging areas, in each cell, a number of packet data communication channels being used for packet data communication, wherein each packet data node comprises mobile station information handling means keeping information about mobile stations registered in the cells covered by the packet paging areas covered by the packet data node and cell information handling means keeping information about packet data communication channels in the cells covered by the packet data node, means for calculating which packet data communication channel resources are to be used for mobile stations after updating of a cell, and means for keeping information about which cells have been updated, wherein when a cell is updated, paging of a mobile station 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 within the packet paging area in which the mobile station is registered, and if the mobile station is not found, a second paging message is sent out to all cells which have been updated.