Patent ID: 7372838
Filing Date: 2008-05-13
Classification: H04W

Abstract:
1. A GPRS (general packet radio service) system having multiple GGSNs (gateway GPRS supporting nodes,) connected to a public network, for providing a packet-based mobile service, comprising: an SGSN (serving GPRS supporting node) for controlling a connection operation according to a session request of a mobile terminal for receiving the packet-based mobile service, and transmitting a packet according to a connected session; a multiple GGSN unit including a plurality of sub GGSNs, selected by the SGSN according to a session request by the mobile terminal, for performing a gateway operation between the GPRS system and a public network so as to transmit and receive packets, the multiple GGSN unit managing a range of IP (Internet protocol) addresses including a plurality of non-overlapping partitions of the IP addresses, each partition managed by one of the sub GGSNs predetermined to manage the partition; a DNS (domain name system) for storing DNS names and IP (Internet protocol) information in the sub GGSNs of the multiple GGSN unit according to selection of the SGSN, and managing the same; an operator network connected between the multiple GGSN unit and the public network, for managing the DNS and communication; and an edge router provided at the final end point of the GPRS system, for performing packet routing between the GPRS system and the public network.