Method and device for realizing subscriber state synchronization in IP multimedia subsystem (IMS) domain

Abstract

The invention discloses a method and a device for realizing subscriber state synchronization in an IP multimedia subsystem (IMS) domain. The method comprises the following steps that: when a subscriber does not hook on, a media gateway controller transmits an unconditional report detection on-hook event signalling to a media gateway timingly; after receiving the unconditional report detection on-hook event signalling and detecting that the subscriber is in an on-hook state, the media gateway reports an on-hook event informing signalling to the media gateway controller; and after receiving the on-hook event informing signalling, the media gateway controller judges whether to release the relevant control resources of the subscriber or not. Due to the adoption of the technical scheme, even if the on-hook informing event reported by the media gateway is lost, one side of the media gateway controller can release the relevant control resources of the subscriber in time, and the condition that the subscriber state mastered by one side of the media gateway controller is not consistent with the actual subscriber state, which is caused by the unusual condition that on-hook informing event reported by the media gateway is lost, can be avoided.

Description

technical field [0001] The present invention relates to the technical field of next-generation network IMS (IP Multimedia Subsystem, IP Multimedia Subsystem), in particular to a method and a device for realizing synchronization of user states in the IMS domain. Background technique [0002] IMS was proposed by 3GPP (3rd Generation Partnership Project) in Release 5. Its core feature is the use of SIP (Session Initiation Protocol) and its independence from access. Under the development trend, 3GPP, ETSI (European Telecommunications Standards Institute, European Telecommunications Standards Institute) and ITU-T (International Telecommunication Union-Telecommunications Standardization, International Telecommunication Union-Telecommunications Standardization Department) are all studying IMS-based network convergence solutions to achieve fixed Network and mobile network integration, so IMS is considered to be the ideal target architecture of the next generation network. [0003] ...

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