US 2025/0159461 A1 · METHOD AND APPARATUS FOR PROCESSING DUPLICATE CALL OF DUAL SIM USER EQUIPMENT

Abstract

Provided are a method and apparatus for processing duplicate calls. The method of a first receiving application server includes receiving an INVITE message from a sending UE, verifying whether a receiving UE is a dual SIM subscriber by querying subscriber information based on a recipient number in the INVITE message, when the receiving UE is determined as a dual-SIM subscriber, identifying the recipient number as a first number associated with a first SIM, withholding the INVITE message and sending a virtual INVITE message to a second receiving application server connected to a second SIM of the receiving UE; receiving, from the second receiving application server, a response message including a call status of the second SIM: and determining whether to establish a call connection between the first SIM and the sending UE, based on the call status of the second SIM included in the response message.

Claims20

Dependent claims

A method for processing duplicate calls by a first receiving application server, the method comprising:

receiving an INVITE message sent from a sending user equipment (UE) through a sending network;
verifying whether a receiving UE is a dual subscriber identification module (SIM) subscriber by querying subscriber information based on a recipient number in the INVITE message;
in an event that the receiving UE is determined as a dual-SIM subscriber, identifying the recipient number as a first number associated with a first SIM, withholding the INVITE message from being sent to the receiving UE, sending a virtual INVITE message to a second receiving application server connected to a second SIM of the receiving UE;
receiving, from the second receiving application server, a response message including a call status of the second SIM:
and
determining whether to establish a call connection between the first SIM and the sending UE, based on the call status of the second SIM included in the response message.

3 more elements

A method of a first subscriber server for processing duplicate calls, the method comprising:

receiving a subscriber query request from a first application server that receives an INVITE message from a sending user equipment (UE) to a first subscriber identification module (SIM) through a sending network;
verifying whether a subscriber associated with a recipient number assigned to the first SIM, included in the subscriber query request, is a dual-SIM subscriber;
sending a subscriber query response, including the dual number assigned to a second SIM, to the first receiving application server to enable checking the call status of the second SIM.

An application server comprising:

a memory configured to store at least one command;
and
a processor configured to execute the stored at least one commands,
wherein the processor perform operations including:
verifying whether a receiving UE is a dual subscriber identification module (SIM) subscriber by querying subscriber information based on a recipient's number in an INVITE message received from a sending UE through a sending network;
in an event that the receiving UE is determined as a dual-SIM subscriber, identifying the recipient's number as a first number associated with a first SIM, withholding the INVITE message from being sent to the receiving UE, sending a virtual INVITE message to a second receiving application server connected to a second SIM of the receiving UE;
receiving, from the second receiving application server, a response message including a call status of the second SIM:
and
determining whether to establish a call connection between the first SIM and the sending UE, based on the call status of the second SIM included in the response message.

6 more elements

Dependencies are inferred from the claim text.

Method and apparatus for processing duplicate call of dual sim user equipment

Life of this patent

Method and apparatus for processing duplicate call of dual sim user equipment

Life of this patent

Abstract

Claims20