Method for recognizing abuse of emergent carrier resource and carrier control IP gateway in network

Abstract

The invention discloses a method for identifying abuse of urgent load resource in IMS, which has a key point of that, aimed at the urgent load resource, a filter rule including IP communication methodis arranged at the access side load control IP gateway, and the IP communication method used for an urgent service and contained in a functional entity which can communicate with the UE directly viaIPduring an urgent service. During a calling procedure, after an IP package transferred via an urgent load resource, the access side load control IP gateway judges whether the IP communication methodin the IP package belongs to ones allowed by the filter rule, if not, the calling is determined to abuse urgent load resource. With the invention, calling abusing urgent load resource can be identifiedrapidly and effectively, thereby ensuring that the urgent load resource is only used for urgent service and preventing the urgent load resource from being abused. The invention can be applied simply and effectively. The invention also discloses an access side load control IP gateway.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a method for identifying abuse of emergency bearer resources in an IP multimedia subsystem (IMS) and an access side bearer control IP gateway. Background technique [0002] In an emergency, the user will use the User Equipment (UE) to call the Public Safety Answering Point (PSAP, Public Safety Answering Point) for help. The PSAP mentioned in this article includes public connection points, including the police station, fire brigade, Hospitals and other emergency service centers, and PSAP may also initiate a callback to the user after the user hangs up, in order to learn more. The emergency service mentioned in this article refers to the user initiating an emergency call. It can also include the case of PSAP callback to the user, of course, it may not include the case of PSAP callback. [0003] figure 1 Shown is the existing IMS domain emergency call signaling flow frame d...

AI Technical Summary

Problems solved by technology

[0020] Emergency bearer resources usually enjoy higher priority and QoS than normal bearer resources. Even when ordinary calls are not allowed to use bearer resources due to roaming restrictions, emergency bearer resources can be used. At the same time, emergency calls using emergency bearer resources can also 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, roaming restrictions, etc., resulting in the abuse of emergency bearer resources

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