Method, device and system for recognizing abuse of emergency bearing resource in IMS

Abstract

The present invention discloses an method, a device, a system and the application for recognizing the urgent bearing resource abuse in the IMS. The keystone is that during the process of call setup, the associative entity for transferring information is estimated in the same conversation, the information from the bearing layer contains an urgent bearing direction, but the information from the application layer has no urgent service direction, then the process is judged as the urgent bearing resource abuse. The calling of the urgency bearing resource abuse is forbidden to set up. The application of the present invention can quickly and efficiently recognize the urgent bearing resource abusing call, consequently ensuring that the urgent bearing resource only can be used for the urgent service, and avoiding the urgent bearing resource abuse. The application of present invention is simple and effective.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and system for identifying abuse of emergency bearer resources in an IP multimedia subsystem (IMS, Internet Multiedia Subsystem). Background technique [0002] In an emergency state, the user will use the user equipment (UE, User Equipment) to call the public safety answering point (PSAP, Public Safety Answering Point) for help, and the PSAP may also initiate a call back to the user after the user hangs up, so as to learn more much information. The emergency service mentioned in this article refers to the emergency call initiated by the user, which may also include the situation that the PSAP calls back the user, and of course, may not include the situation that the PSAP calls back. [0003] FIG. 1 is a frame diagram of an overall flow of an emergency call in an existing IMS domain. The solid line in the figure indicates the emergency call initia...

AI Technical Summary

Problems solved by technology

[0020] Emergency bearer resources usually enjoy higher priority and QoS than ordinary bearer resources. Even when ordinary calls are not allowed to use bearer resources due to roaming restrictions, emergency bearer resources can also be used. It is possible that the bearer layer is free

However, the function of the GGSN is only to forward the IP packets sent by the UE, and does not analyze the content of the application layer. The above filtering rules can restrict the IP packets sent by the UE to only reach some specific P-CSCFs for emergency services, but do not limit the P-CSCF -Whether the CSCF still performs emergency business processing after parsing the received content, so that users may apply for urgent bearer resources when accessing the GGSN, while the upper-layer applications use ordinary calls, so that the access side can avoid calculation fees and roaming restrictions, etc., resulting in the abuse of emergency bearer resources

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