Method, device and system for accessing IMS (IP multimedia subsystem) network
A technology for accessing the Internet and networks, applied in the field of accessing IMS networks, can solve problems such as low security, unsatisfactory, increase in the number of user names and passwords, and achieve the effects of reducing costs, saving SIM card resources, and enhancing security
Active Publication Date: 2014-11-05
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology
[0005] The NASS-Bundle method depends on the security of the authentication scheme of the underlying access network, and is only applicable to scenarios where the IMS network and the access network belong to the same operator. If the IMS network and the access network belong to different operators, the IMS network side The device cannot obtain the binding relationship between the terminal IP address and the terminal location; in addition, this method cannot distinguish between multiple terminals using the same IP address to access the IMS network
[0006] The security of the SIP Digest method depends on the strength of the user password. If the length of the password set by the user is not high for the purpose of easy memory, the user password is easy to be guessed, the security is not high, and the operation of the user inputting the password is easy to be manipulated. Trojan interception; in addition, the password method increases the number of user names and passwords that users need to remember, reduces user experience, and cannot meet the needs of users to log in to the IMS network with the same identity on multiple terminals at the same time
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[0033] An embodiment of the present invention provides a method for a terminal with a card to assist a terminal without a card to access an IMS network. When a user uses a terminal without a card to access the IMS network, the authentication function of the terminal with a card is used to generate a temporary IMS registration key for the terminal without a card. And TIMPI (Temporary IMS Private Identity, temporary IMS private user identity), to assist non-card terminal and IMS network side equipment to conduct mutual authentication and establish a secure channel, among them, the card terminal can be the user's mobile phone terminal or home set-top box and other equipment.
[0034] The following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but ...
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The embodiment of the invention discloses a method for accessing an IMS (IP multimedia subsystem) network, which comprises the following steps that: a non-card terminal sends an ephemeral key acquisition request to a card terminal; and the non-card terminal receives an ephemeral key acquisition response which is from the card terminal and corresponds to the ephemeral key acquisition request, and carries out IMS network access by using an ephemeral IMS registration key and an ephemeral IMS private user identifier TIMPI carried in the ephemeral key acquisition response, wherein the IMS registration key and the TIMPI are generated by the card terminal according to the ephemeral key acquisition request. By using the invention, the safety of the access mode can be enhanced. The embodiment of the invention also discloses a device and a system applying the method.
Description
technical field [0001] The present invention relates to the technical field of communication, in particular to a method, device and system for accessing an IMS network. Background technique [0002] With the development of communication networks, there are two terminal types in the application of IMS (IP Multimedia Subsystem, Internet Protocol Multimedia Subsystem) with a card terminal and without a card terminal. Among them, the terminal with the card and the network side use the SIM (Subscriber Identity Module, Subscriber Identity Module) / USIM (Universal Subscriber Identity Module, Global Subscriber Identity Module) / ISIM (IMSSubscriber Identity Module, IMS Subscriber Identity Module) card to realize two-way Identity authentication, negotiation of session key, and establishment of two-way IPSec (IP Security, Internet Protocol Security) channel based on session key to protect the security of session content. [0003] The ways for cardless terminals to access the IMS network...
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IPC IPC(8): H04W12/04H04W12/08H04L29/06H04W12/041
Inventor 路晓明
Owner CHINA MOBILE COMM GRP CO LTD