Patent ID: 7319676

Claim:
A general packet radio service (GPRS) network system comprising: a gateway node (GGSN) having a function for coupling said GPRS network system to an external packet data network for packet transmission; a plurality of support nodes (SGSN) each subordinate and connected to said gateway node for packet transmission; a plurality of radio network controllers (RNC) each subordinate and connected to one of said support nodes for packet transmission, each said radio network controller having a subordinate cellular network; a plurality of mobile stations each coupled to said cellular network of one of said radio network controllers; and a home location register (HLR) for storing current location information of said mobile stations in conjunction with ID thereof, wherein: at least one of said GGSN, each said SGSN and each said RNC includes a transmitter for directly transmitting to said home location register current location information delivered from one of said mobile stations, a receiver for directly receiving said current location information of a specified one of said mobile stations stored in said home location register, and a communication path controller for transferring a packet of a coupling request delivered from a source mobile station through a forward path to a higher-order node or through a return path to a subordinate node, controller or cellular network.