GPRS (general packet radio service) system with multiple...

Details GPRS (general packet radio service) system with multiple... GPRS (general packet radio service) system with multiple...

2008-05-13

2008-05-13

Rao, Seema S. (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S400000

Reexamination Certificate

active

10438114

ABSTRACT:
A GPRS system having multiple GGSNs connected to a public network, for providing a packet-based mobile service, comprises: an SGSN 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 transmitting and receiving packets; a DNS for storing DNS names and IP information in the GGSNs of the multiple GGSN unit according to selection of the SGSN; an operator network for managing the DNS and communication; and an edge router for performing packet routing between the GPRS system and the public network.

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patent: 6317421 (2001-11-01), Wilhelmsson et al.
patent: 6748434 (2004-06-01), Kavanagh
patent: 2003/0055954 (2003-03-01), Kavanagh
patent: 2003/0169712 (2003-09-01), Tsao
patent: 2004/0032865 (2004-02-01), Kwon
patent: 2004/0228347 (2004-11-01), Hurtta et al.
patent: 1020020052499 (2002-07-01), None
patent: 10-2003-0067089 (2003-08-01), None
patent: WO 02/37772 (2002-05-01), None

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