Determination method of access domain and auxiliary method for determining access domain

Abstract

The invention discloses a method for determining an access domain and an auxiliary method for determining the access domain. The method for determining the access domain comprises the following steps:receiving an INVITE message comprising a called user target identifier; obtaining registration information of the called user in the VoLTE network according to the target identifier and a stored useridentifier list registered in the VoLTE network; if the registration information is in a registered state, determining that the access domain of the called user is an internet protocol multimedia subsystem IMS domain; and if the registration information is in an unregistered state, determining that the access domain of the called user is a circuit switching (CS) domain. The user identification list is updated according to an IMS logout request or an IMS registration request actively sent by the user terminal, and the IMS logout request or the IMS registration request is sent by the user terminal according to a network switching result of the user terminal. According to the access domain determination method and the auxiliary method for determining the access domain provided by the embodiment of the invention, the access domain can be rapidly determined.

Description

technical field [0001] The present invention relates to the field of data services, in particular to a method, device, and device for determining an access domain, and an auxiliary method, device, device, and computer storage medium for determining an access domain. Background technique [0002] IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) is the development direction of multimedia communication in the future, and it is also the most important component of the next generation network. It is a subsystem supporting IP multimedia services proposed by the Third Generation Partnership Project (Third Generation Partnership Project, 3GPP). IMS-based Voice over Long-Term Evolution (VoLTE) is a major development direction recognized by 3GPP for a long-term evolution (Long Term Evolution, LTE) network voice solution. [0003] Due to the insufficient coverage in the early stage of LTE network deployment, in order to ensure the continuity of voice services, it is necessary to...

AI Technical Summary

Problems solved by technology

[0005] During the call establishment process of VoLTE, currently, the continuity application server (Server Centralization and Continuity Application Server, SCCAS) interacts with the home subscriber server (Home Subscriber Server, HSS) to perform T-ADS query to realize the selection of the user access domain. The method increases the interaction process between SCCAS and HSS, which has an impact on VoLTE delay, resulting in a large call delay

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