A method and server for determining a called access domain

A method for determining an access domain and a technology for access domain, applied in the field of communication, can solve problems such as wrong access domain selection in the T-ADS process
CN105636007BActive Publication Date: 2019-07-12CHINA MOBILE COMM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA MOBILE COMM GRP CO LTD
Publication Date
2019-07-12

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Abstract

The invention discloses a terminating-access domain determining method and server. The method comprises that a triggered application server (AS) requests the acquisition of terminating-access domain selection (T-ADS) information of a user and an IP multimedia subsystem (IMS) register state from a home subscriber server (HSS), and transmits an IP multimedia public identity (IMPU) to the HSS; the AS receives a request result returned by the HSS, the request result includes a query result, the T-ADS information and the IMS register state, and the T-ADS information and the IMS register state are information acquired through a query by the HSS according to the IMPU; and the AS determines an access domain according to the request result.
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Description

technical field

[0001] The present invention relates to communication technology, in particular to a method and server for determining a called access domain. Background technique

[0002] At present, when the application server (Application Server, AS) to which the called user belongs receives a call request (SIP INVITE message), because the called user may be in different network coverage states, the network coverage states can be divided into supporting IMS voice , does not support IMS voice, IMS is registered, IMS is not registered, so it is necessary to perform the called access domain selection (Terminating-Access Domain Selection, T-ADS) process, so as to determine the call from the IP Multimedia Subsystem (IP Multimedia Subsystem, IMS ) domain access or access from a circuit switched (CS) domain.

[0003] However, for the following cases:

[0004] 1. When querying, the user indicates that MSISDN is used, and the user who has signed a VoLTE (Voice over LTE) service ...

Claims

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