Method and function for handling a subscriber's communication services

A method performed by a user equipment (UE) for handling communication services for a subscriber of a communication network, wherein the subscriber has at least one of multiple ongoing communications services ongoing on the UE, the method comprising:

• receiving, from a charging function of the communication network, a threshold notification that available credit in a credit account of the subscriber has reached or fallen below a credit threshold needed for multiple ongoing communication services consuming credit from the credit account;
• and
• selectively using the available credit in the credit account for the following communication services, based on termination by the communication network of other ongoing communication services:
• a prioritized one of the multiple ongoing communication services, in response to sending the charging function a response, to the threshold indication, that indicates the prioritized communication service;
• and
• a predefined prioritized communication service, when no response indicating a prioritized one of the multiple ongoing communication services is sent to the charging function.

A charging function of a communication network, comprising:

• at least one processor;
• and
• and at least one memory storing instructions that, when executed by the at least one processor, configure the charging function to:
• detect that available credit in a credit account of a subscriber of the communication network has reached or fallen below a credit threshold when the subscriber has multiple ongoing communication services consuming credit from the credit account;
• send a threshold notification of the reached or fallen below credit threshold to a user equipment (UE) on which the subscriber has at least one of the multiple ongoing communication services;
• determine if a response to the threshold notification has been received from the UE with prioritization of one of the multiple ongoing communication services;
• based on a determination that a response with prioritization of one communication service has been received, initiate termination of all ongoing communication services except the prioritized communication service;
• based on a determination that a response with prioritization of one communication service has not been received, determine if information indicating a predefined prioritized communication service is available;
• and
• based on a determination that information indicating the predefined prioritized communication service is available, initiate termination of all ongoing communication services except the predefined prioritized communication service;
• and
• provide all available credit in the credit account to be available for the prioritized communication service or the predefined prioritized communication service.