AAA server, P-GW, PCRF, obtaining method and system for customer equipment identification

Abstract

The invention discloses an acquisition method for an AAA server, P-GW, PCRF and a user device mark and a system thereof, wherein the acquisition method of the user device mark comprises conducting the access authorization for an authorization accounting server and a user device, sending the access receiving information for an external agent of a non 3GPP access network by the authorization accounting server, and then carrying the true mark of the user device in the access receiving information, and sending the true mark of the user device to a grouping data network gateway by the authorization accounting server after verifying that the user device mark is a false mark of the user device in the authorization process of the authorization accounting server and the grouping data network gateway. The invention further provides an authorization accounting server, a grouping data network gateway, a strategic accounting control functional entity, an acquisition method of a user device mark and a system thereof. A non 3GPP terminal can be assured to directly access into an EPC network through the invention.

Description

technical field [0001] The present invention relates to the field of communication, in particular to an authentication, authorization and charging server, a packet data network gateway, a policy and charging control function entity, and a method and system for acquiring user equipment identifiers. Background technique [0002] In order to maintain the strong competitiveness of the third generation mobile communication system in the field of mobile communication, improve its network performance, reduce network construction and operation costs, the standardization work of the 3rd Generation Partnership Project (3GPP) The group is currently working on the Evolved Packet Core (EPC) of the core network system. The EPC system supports the access of non-3GPP wireless access networks and can provide user equipment with higher transmission rates and shorter transmission delay. [0003] The network interworking between non-3GPP access systems (such as the Global Interoperability Syst...

AI Technical Summary

Problems solved by technology

[0016] At present, due to the new requirements on the terminal, the terminal is required to transmit the real identity of the user equipment to the network through the air interface. For example, for the S2a interface supporting the mobile IPv4 protocol, the NAI of the mobile IP registration request message initiated by the terminal must be based on IMSI NAI, but traditional non-3GPP terminals (such as WiMAX terminals), when sending a mobile IP registration request, the user equipment identification carried in the mobile IP registration request is a pseudo-identity rather than a real identification, that is, the mobile IP in step S203 The registration request carries the fake identity of the user equipment; for the S2c interface that supports the dual-stack mobile IP protocol, the terminal is required to send the user equipment identity to the P-GW during the process of establishing a security association with the P-GW. risks, such as being attacked by a man-in-the-middle, and, even if it is sent safely, the traditional non-3GPP still does not want to directly send the real identity, so the traditional non-3GPP terminal must meet this requirement before it can access the EPC, otherwise it cannot be used normally, so restrictions The scope of application of non-3GPP and EPC system interworking technology

[0017] Moreover, since the non-3GPP network and the P-GW cannot distinguish whether the user equipment identity sent by the terminal is the real identity of the user equipment, if it is simply assumed that the identity sent by the terminal is a real user equipment identity, it may cause wrong identification of the user equipment. As a result of service failure, the non-3GPP MAG may not send the real user equipment ID to the P-GW according to local policies because the original system does not need to use the real user equipment ID to identify the user equipment

[0018] In the 3GPP network, the real identity of the user equipment is used by network elements (such as P-GW, PCRF) in 3GPP to identify the user equipment. The way of obtaining the real identity of the user equipment in the traditional technology requires non-3GPP terminals to send To the network element on the network side, and requires the network element (such as P-GW, PCRF) that cannot recognize the real identity of the user equipment to receive the real identity of the user equipment by default, which not only limits the direct access of non-3GPP terminals to the EPC network, It also lays a hidden danger for network elements to correctly identify user equipment

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