Inter-domain communication method of distributed IMS (multimedia subsystem) core net framework

Abstract

The invention discloses an inter-domain communication method of a distributed IMS (multimedia subsystem) core net framework. The inter-domain communication method comprises the following steps of: P-CSCF (proxy call session control function) of a distributed IMS core net receives a request of a user, and judges whether the type of the request is a login request or a conversation request; if the type of the request is the conversation request, the P-CSCF judges whether the user which initiates the login request is logined according to the self-stored user login information, if so, the P-CSCF obtains the login information of the user initiating the conversation request on the P-CSCF, the request is forwarded to the S-CSCF(serving-call session control function) logon by the user according to routing information in the request, and the S-CSCF logon by the user processes the conversation request according to the ascription area of a called user. The method provided by the invention is provided based on an area communication standard given by a 3GPP (the 3rd Generation Partnership Project) standard, and can guarantee that the distributed IMS core net which adopts a P2P distributed IMS core net has practical allocation and transport operation values.

Description

technical field [0001] The invention belongs to the field of mobile Internet and telecommunication core network, and more specifically relates to an inter-domain communication method under the framework of a distributed IMS core network. Background technique [0002] When operators actually deploy and operate the IP Multimedia Subsystem (IMS) core network, they generally build a unified IMS network in units of regions or provinces according to the scale of users and the management system. With multi-domain networking, different domain names can be allocated according to regions, and the network has good scalability, which is suitable for large-scale networking. When the initial network scale is small, the IMS core network can be centrally set up to be responsible for the services of multiple domains, but this requires higher functions of the core network equipment; as the network scale expands, IMS core network elements can be set up in each domain . The so-called domain d...

AI Technical Summary

Problems solved by technology

[0003] At present, the IMS core network adopts the centralized networking scheme in the 3GPP standard. The centralized networking will inevitably bring disadvantages such as single point of failure, performance bottleneck, poor scalability, and complicated node maintenance. The IMS core network with advanced distributed

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