Disaster recovery method of serving GPRS support node

Abstract

The invention discloses a method for processing the failure of a node supported by GPRS service, which comprises the following steps: a. a major SGSN and at least one stand-by SGSN are configured; b. the major SGSN and the stand-by SGSN respectively set up a physical link and an NSVC link with a BSC, and the stand-by SGSN obstructs the NSVC link between a home terminal and the BSC; the major SGSN carries out the sending and receiving of grouped data; c. the stand-by SGSN detects the state of the major SGSN at a regular time; if the SGSN is detected to be unavailable, the NSVC link between the home terminal and the BSC is not obstructed; switching to the major SGSN is carried out, and the sending and the receiving of mobile grouped data are carried out. By optimizing the configuration of the stand-by SGSN and increasing the link detection function of the major SGSN and the stand-by SGSN, the method of the invention causes the stand-by SGSN to be capable of automatically taking over a service without upgrading the BSC in a large area when unpredictable abnormity of the major SGSN occurs, thereby reducing operation cost and improving the reliability of SGSN failure.

Description

technical field [0001] The present invention relates to the field of mobile communication systems, in particular to a SGSN (Serving GPRS Support Node, GPRS Service Support Node) disaster recovery processing method in a GPRS (General Packet Radio Service, General Packet Radio Service) network. Background technique [0002] In recent years, in order to provide users with richer data bearing services, various GSM operators have begun to gradually expand many GSM network systems to support GPRS systems, which greatly increases the data service rate. Specifically, MS (Mobile Station, mobile terminal) needs to support a set of GPRS protocol stack suitable for terminal equipment, and BSC (Base Station Control, base station control system) needs to add PCU (Packet Control Unit, packet control unit) equipment In order to realize the protocol stack for communication with GPRS core network equipment, SGSN and GGSN (Gateway GPRS Support Node, GPRS gateway support node) network elements ...

AI Technical Summary

Problems solved by technology

However, if the SGSN that provides the service is unavailable, and all users under the BSC of the R4 version or before R4 are only connected to one SGSN, all users under these BSCs will not be able to continue to perform packet services, and can only wait for the service provider SGSN recovery

In order to solve this problem, the solution usually adopted at present is to upgrade all BSCs and SGSNs in the live network to R5 and higher versions, so that when all network elements can support SGSN POOL, BSC can choose the SGSN POOL pool Any available SGSN to implement packet services. This solution requires both the BSC and SGSN to be upgraded to R5 or later. However, many BSCs on the live network have been in use for a long time, and most of them are R4 or earlier versions, and the BSC The upgrade cost is very high, involving large-scale hardware upgrades, so it costs a lot of money to provide a simple SGSN disaster recovery function, which is not conducive to the operation of operators

Images