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Method for securing the data traffic between a mobile radio network and an IMS network

A technology of radio network and data network, applied in the field of data network

Inactive Publication Date: 2009-07-22
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage here is that a mechanism must be provided for storing the same keying material within the network as on the ISIM

Method used

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  • Method for securing the data traffic between a mobile radio network and an IMS network
  • Method for securing the data traffic between a mobile radio network and an IMS network
  • Method for securing the data traffic between a mobile radio network and an IMS network

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Embodiment Construction

[0016] FIG. 1 depicts a data network in which data is exchanged between user terminal equipment UE (UE=user equipment) and a plurality of subnetworks of the data network. The data network comprises air interfaces 1 and 2, of which interface 1 is a UMTS interface and interface 2 a GPRS interface (UMTS=Universal Mobile Telecommunications System; GPRS=General Packet Radio Service). Encrypted transmission over the air interface described.

[0017] A subnet 3 is connected to the air interface, which can be a GPRS network or a UMTS network depending on the air interface used. This network includes the SGSN server SGSN (SGSN=Serving GPRS Support Node) as the entry computer, to which a GGSN server GGSN (GGSN=Gateway GPRS Support Node) and an HLR server HLR (HLR=Home Location Register) are connected. ). The GGSN server is in turn connected to a Radius server RADIUS, a DHCP server DHCP (DHCP=Dynamic Master Configuration Protocol), a router R and the Internet. The individual component...

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Abstract

The invention relates to a method for protecting data communication services between a mobile radio network (3) and an IMS network (4), in which method: a mobile user (UE) in the mobile radio network (3) is authenticated; mobile user (UE) in the IMS network (4); checks whether the identity of the mobile user (UE) authenticated in the IMS network (4) is the same as that of the mobile user (UE) authenticated in the mobile radio network (3) The identity of the user (UE) is consistent; if the identity is consistent, the IMS network (4) sends a confirmation message to the mobile user (UE); and the mobile user (UE) is carried out through a security protocol supported by a common key. Data exchange between a user (UE) and said IMS network (4), wherein said key for said security protocol is derived from said confirmation message.

Description

technical field [0001] The invention relates to a method for securing data traffic between a mobile radio network and an IMS network and a corresponding data network. Background technique [0002] The IMS subnetwork (IMS=IP-based Multimedia Subsystem) standardized in the 3GPP organization (3GPP=Third Generation Partnership Project) provides multimedia services to mobile subscribers within the mobile radio network. In order to realize the authenticated registration of mobile subscribers within the IMS network, the prior art discloses the IMS-AKA-protocol (AKA=Authentication and Key Agreement) (see document [1]). In IMS Release 5 a security structure is adopted in which the keying material is contained in a so-called ISIM (IP Multimedia Services Identity Module) on the chip card of the user's mobile terminal, wherein the keying material is also stored in the IMS network in the computer. The disadvantage here is that a mechanism must be provided for storing the same keying ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04W12/04H04L63/0435H04L29/06217H04L63/08H04L63/06H04L65/1016H04W8/26H04W80/10H04L63/168H04W12/041
Inventor D·克勒泽尔伯格
Owner SIEMENS AG