cdma network copy card detection method and system

Abstract

The present invention relates to a method and system for detecting a CDMA network copy card. The method includes: when a user accesses a CDMA wireless network through a terminal device, the PDSN acquires the corresponding MEID from the terminal device; when the PDSN initiates an authentication request to the authentication device, the The MEID of the terminal device is sent to the authentication device; the authentication device judges whether the user has established a PPP connection. If the user has established a PPP connection, it compares whether the MEID corresponding to the established PPP connection is the same as the MEID of the terminal device. If not, then Make sure that the corresponding UIM card of the user has been copied. In the present invention, the PDSN submits the MEID obtained from the terminal device to the authentication device, and judges whether the new PPP connection uses a user terminal or a new If the user terminal is a new user terminal, it can be judged that it has used a duplicate card, thereby solving the problem of misjudgment caused by abnormal inter-PDSN handover at the PDSN boundary.

Description

technical field [0001] The present invention relates to communication technology, in particular to a code division multiple access (CDMA) network duplication card detection method and system. Background technique [0002] In the CDMA packet domain network, due to the existence of some illegally copied terminals and non-standard implementation methods of non-customized terminals, coupled with the lack of effective detection mechanism on the network, the existence of terminal User Identity Module (UIM) cards has been blocked. Risk of illegal copying and successful access to the network. [0003] Authentication, Authorization, and Accounting (AAA) devices in the current network generally use the following methods to determine whether there is a duplicate card: 1) The number of online Point-to-Point Protocol (PPP) connections of the same user reaches 3 or more; 2) The same user has two PPP connections online at the same time, and it exceeds a certain period of time. [0004] T...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned method of identifying duplicate cards has the following problems: the above scenario may be caused not only by duplicate cards, but also due to abnormal cross-PDSN switching at the boundary of Packet Data Serving Node (PDSN for short), for example, when a user When moving from one PDSN coverage area to another PDSN coverage area, the PPP connection in the source PDSN will usually be saved for a period of time according to the time interval determined by the PPP inactivation timer, and when the user enters the destination PDSN, it will be restarted. Initiate a PPP connection request. At this time, the AAA device will find that the same user has two PPP connections online at the same time. If the user moves to the third PDSN coverage area, the AAA device will further find that the user has three PPP connections at the same time. , and these situations will inevitably lead to a certain probability of misjudgment in the existing duplicate card detection method

Images