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Network architecture for carrying number based on distributed DNS system in IMS network and its method

A technology of number portability and network structure, which is applied in the field of number portability, can solve difficult problems such as number portability, and achieve the effects of small changes to the existing network, good scalability and manageability, and low delay

Inactive Publication Date: 2008-01-09
ZTE CORP
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AI Technical Summary

Problems solved by technology

The standard organization has not yet defined the solution for IMS network number portability. In theory, the number portability can also use an application server similar to the traditional intelligent network or a centralized database solution, but it generally needs to add a new access interface. It is difficult to achieve number portability across the entire network

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  • Network architecture for carrying number based on distributed DNS system in IMS network and its method
  • Network architecture for carrying number based on distributed DNS system in IMS network and its method
  • Network architecture for carrying number based on distributed DNS system in IMS network and its method

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Embodiment Construction

[0041] The technical features of the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings.

[0042] In the present invention, user numbers can be transferred between networks in different regions or between networks of different operators, and number portability can be performed. The networks in different regions or the networks of different operators correspond to different domains. The number portability service performed corresponds to each number, and the parties of the number portability contract relationship include three roles: number management domain, number current domain, and number migration domain.

[0043] Among them, the number management domain refers to the initial number allocation domain, that is, the domain where the number is allocated for the first time, and the domain name of this domain is always used as the domain name part of the assigned user number, regardless of whether number portability...

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Abstract

The network architecture comprises: a number management domain, a number current domain and a number settling-in domain. Each of the number management domain, number current domain and number settling-in domain respectively comprises: an IMS calling processing net element comprising CSCF, BGCF, MGCF, IBCF or the IMS network calling processing node that will be defined by standardization organization; a number carrying database with DNS access interface used for storing the data of users in the domain and the emigration domain check list of user emigrating to other domain; an IMS home subscription user server used for saving the active number resource of the domain where it is located at.

Description

technical field [0001] The invention relates to number portability, in particular to a network structure and method for realizing number portability based on a distributed DNS system in an IMS network. Background technique [0002] The full name of IMS is IP Multimedia Subsystem, that is, IP Multimedia Subsystem. It is a multimedia communication network defined by 3GPP that uses SIP protocol as call control signaling. Next-generation core network. [0003] Number portability is a technology for telecom users to migrate in different geographical areas or switch between different operators without changing their own numbers. As a technology, it is not only a regulatory requirement for operators to break the monopoly and lower the competition threshold, but also a service adopted by operators to improve their own competitiveness. [0004] Traditional networks generally adopt the E.164 user numbering method defined by ITU-T (International Telecommunication Union Standardizatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/16G06F17/30H04L12/24H04L29/06H04L12/56
Inventor 汪军
Owner ZTE CORP
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