Patent ID: 7324483

Claim:
A method of providing a packet data service upon request from an MS (Mobile Station) in a core network including an RNC_(Radio Network Controller), an SGSN (Serving General packet radio service Supporting Node), and a GGSN_(Gateway GPRS Supporting Node) of a mobile communication system, comprising the steps of: transmitting a request message for the packet data service to the core network; assigning a GTP (GPRS Tunneling Protocol) path for transmitting the packet data; assigning an uplink TEID (Tunnel Endpoint ID) for a packet data transmission from the RNC to the GGSN via the SGSN and a downlink TED for a packet data transmission from the GGSN to the RNC via the SGSN the uplink TED and the downlink TED being identical; and assigning for data transmission a first VCC (virtual Channel connection) from the GGSN to the SGSN, a second VCC from the SGSN to the GGSN, a third VCC from the RNC to the SGSN, and a fourth VCC from the SGSN to the RNC, wherein at least one VCC is different from the remaining VCCs within the core network.