Method and system for limiting mobile terminal roaming

Abstract

The invention discloses a method and system to limit mobile terminal (MS) roaming. The method is used to set the filtration processing module with GTP analytic function to restrict on MS roaming, and the filtering condition is set in the filtration processing module, When the filtration processing module receives the establishment requiring message of the GTP tunnel from the SGSN, If the corresponding information carried in the establishment requiring message of the GTP tunnel is matched with the setting filtering condition, the filtration processing module will limit the MS roaming. The invention saves the GGSN resources and improves the handling performance of GGSN.

Description

technical field [0001] The present invention relates to general packet radio service (GPRS), especially a method and system for restricting mobile terminal (MS) from roaming in GPRS network. Background technique [0002] GPRS is a wireless network transmission method using packet switching technology on the basis of GSM network. The GPRS network is a bearer network transformed on the GSM network, specifically a Layer 2 bearer network. In this sense, the GPRS network is the same as the Ethernet, Token Ring, and Frame Relay networks, all of which are used to carry Layer 3 data packets. The GPRS network is realized based on the existing GSM network, and some network nodes need to be added in the existing GSM network, among which the GPRS support point (GSN) is the most important network node in the GPRS network. [0003] GSN has mobile routing management function, it can connect various types of data networks, and can connect GPRS network to GPRS register, GSN can complete da...

AI Technical Summary

Problems solved by technology

[0029] 1) GGSN performs roaming restriction according to the IMSI and RAI carried in the GTP tunnel creation request message. Since the MCC and MNC carried in the IMSI identify a GPRS service area, the GGSN restricts roaming according to the IMSI carried in the GTP tunnel creation request message. To restrict MS roaming, only MSs in one GPRS service area can be restricted, but roaming restrictions cannot be performed for a certain MS user, which makes the processing of GGSN's roaming restrictions not perfect.

[0030] 2) In the processing of restricted roaming, GGSN needs to judge more conditions, which consumes GGSN resources and reduces the processing performance of GGSN

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