Data packet radio service with enhanced mobility management

Details Data packet radio service with enhanced mobility management Data packet radio service with enhanced mobility management

1998-06-04

2000-08-15

Vo, Nguyen

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455426, 455560, 370379, 370465, H04Q 720, H04B 138

Patent

active

061049298

ABSTRACT:
The address of a latest Serving GPRS Support Node (SGSN) is provided to a Gateway GPRS Support Node (GGSN) by a special Update SGSN Address Request message which is sent from the SGSN to the GGSN. For a subscriber whose subscription permits, the address of the latest SGSN node is sent in the Update SGSN Address Request message for a qualified packet data protocol (PDP) context. A qualified PDP context (1) has a static PDP address; and (2) is not activated. The Update SGSN Address Request message can be sent from the SGSN to the GGSN in either a GPRS Attach scenario or an Inter-SGSN Routing Area Update Scenario. In response to the Update SGSN Address Request message, the GGSN sends an Update SGSN Address Response message which advises whether the updating of the address for the SGSN at the GGSN has been successful.

REFERENCES:
patent: 5729537 (1998-03-01), Billstrom
patent: 5742668 (1998-04-01), Pepe et al.
patent: 5793762 (1998-08-01), Penners et al.
patent: 5966378 (1999-10-01), Hamalainen
patent: 5987137 (1999-11-01), Karppanen et al.
Digital Cellular Telecommunications System (Phase 2+), General Packet Radio Service (GPRS) Service Description, TS GSM 03.60 version 2.0.0, May 1997.
Brasche et al, Analysis of Multi-Slot MAC Protocols Proposed for the GSM Phase 2+ General Packet Radio Service, 1997 IEEE 47.sup.th Vehicular Technology Conference, Phoenix, AZ, May 4-7, 1997, vol. 2, No. CONF. 47, May 4, 1997, pp. 1295-1300.

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