Method and device for identifying roam between CDMA network and GSM network

Abstract

The invention discloses a method and device for identifying roam between CDMA network and GSM network, comprising the followings: by means of the characteristics that the signaling related with the user roam region is run between the CG gateway and ISTP, obtaining global title GT code of visited mobile switching centre MSC of user and original mobile phone number of user; then analyzing the GT code of visited MSC of user; and finally obtaining roam region information of user. The invention adopts original mobile phone number of user in the network in specific system to carry out statistics, analysis and subsequent charging so that the corresponding relation between tariff information and user can be clear and the confusion will not be caused. The invention can analyze and position the visited countries of roaming user and the used operator network by extracting signaling chain between the CG gateway and the visited MSC of user, thereby overcoming the problem that the real roaming region information of mobile communication terminal user cannot be judged in the prior art.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a roaming identification method and device between CDMA (Code Division Multiple Access) and GSM (Global System for Mobile Communications, Global System for Mobile Communications) networks. Background technique [0002] In the GSM network (hereinafter referred to as the G network), when the user is moving across MSC (Mobile Switching Center) / VLR (Visitor Location Register, Visitor Location Register), the MSC / VLR that the user newly visits will report to the user The HLR (Home Location Register, user's home location register) of the user sends a location update request message Location Update Request, and obtains relevant subscription information of the user from the HLR. Correspondingly, the HLR will update the current location of the user, and let the previous MSC / VLR delete the relevant information of the user. The specific process is as follows: figure 1 s...

AI Technical Summary

Problems solved by technology

However, when the C network user roams to the G network, it is impossible to analyze the roaming behavior of the C network user by using the analysis method of the registration notification process of the C network.

Because what is carried in the registration notification message REGNOT is not the MSC GT code of the real user's roaming place, but the GT code of the CG gateway, so the analysis of the C network user roaming on the G network cannot locate the MSC of the user's roaming place GT code, there is no way to judge the real roaming location information of C network users

[0007] Conversely, the registration notification process when G network users roam to C network is as follows: Figure 4 As shown, the application system adopts the analysis method of the location update process of the G network, and the analysis of the roaming behavior of the G network users has been unable to be realized.

Because what is carried in the location update request message Location Update Request is not the MSC GT code of the real user's roaming place, but the GT code of the CG gateway, so the analysis of the G network users roaming on the C network cannot locate the user's roaming The GT code of the local MSC also has the above-mentioned problem of being unable to determine the real roaming information of the G network user

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