Methods and apparatus for registering an IMS subscriber using temporary identifiers

A technology of temporary identification and private user identification, which is applied in the field of registered subscribers and can solve the problems of not being able to protect IMSI

Pending Publication Date: 2020-07-31
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current procedure for registering a User Equipment (UE) with IMS does not protect the IMSI (or equivalently the IMS Private Subscriber Identity (IMPI) derived from the IMSI)

Method used

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  • Methods and apparatus for registering an IMS subscriber using temporary identifiers
  • Methods and apparatus for registering an IMS subscriber using temporary identifiers
  • Methods and apparatus for registering an IMS subscriber using temporary identifiers

Examples

Experimental program
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Embodiment Construction

[0032] In order for a subscriber to access the services provided by the IMS, he or she must register with the IMS. This registration procedure requires the subscriber to send some identifying information from the user equipment (UE) to the IMS. To initiate registration, the UE sends a SIP Registration Request to the IMS network, which includes an IMS Private User Identity (IMPI) and one or more IMS Public User Identities (IMPU), which are stored in the UE's IP Multimedia Subscriber Identity Module (ISIM) . Alternatively, if the UE does not have an ISIM, the IMPI can be created based on the Universal Subscriber Identity Module (USIM) in the UE. The UE creates the IMPI from the International Mobile Subscriber Identifier (IMSI) that globally and uniquely identifies the subscriber.

[0033] In 5GS, it is required that identification information such as the IMSI is not sent in clear text over the radio access network. Since the IMPI has the same user identity class as the IMSI, ...

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Abstract

A method of registering a subscriber in an IP Multimedia Subsystem (IMS), said subscriber being associated with an IMS Private User Identity (IMPI) and an IMS Public User Identity (IMPU) and further being associated with a 4G or 5G conforming User Equipment (UE). The method comprises: at the UE, generating a Temporary IMS Private User Identity (TIMPI) and a Temporary IMS Public User Identity (TIMPU) from a Globally Unique Temporary Identifier (GUTI) allocated by and received from a 4G or G network to temporarily identify the UE; sending an IMS registration request containing the TIMPI and theTIMPU from the UE to the IMS; at the IMS, using the TIMPI and the TIMPU to determine the GUTI, and communicating with the 4G or 5G network to determine, using the GUTI, an International Mobile Subscriber Identifier (IMSI) associated with the UE; at the IMS, using the IMSI to determine said IMPI and IMPU; and completing IMS registration of the subscriber using the IMPI and the IMPU.

Description

technical field [0001] The present invention relates to methods and arrangements for registering subscribers in an IP Multimedia Subsystem (IMS). Background technique [0002] IP multimedia services provide a dynamic combination of voice, video, messaging, data, and more within the same session. By increasing the number of basic applications and media that can be combined, the number of services offered to end users will increase and the experience of human-to-human communication will be enriched. This will lead to a new generation of personalized rich multimedia communication services. [0003] The IP Multimedia Subsystem (IMS) is a technology defined by the 3rd Generation Partnership Project (3GPP) to provide IP multimedia services over mobile communication networks. IMS provides key features to enrich the end user's human-to-human communication experience by using a standardized IMS service enabler, which facilitates new rich human-to-human (client-to-client) communicat...

Claims

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Application Information

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IPC IPC(8): H04W12/02H04L29/08H04L29/06
CPCH04L65/1016H04L63/0407H04L65/1073H04W12/02H04W12/75H04L65/1104H04W12/72H04W8/04H04W8/18H04W84/042
Inventor M·哈伦斯塔尔
Owner TELEFON AB LM ERICSSON (PUBL)
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