METHODS, APPARATUS AND COMPUTER-READABLE MEDIUMS SUPPORTING SUBSCRIPTIONS TO EVENTS IN A CORE NETWORK

The disclosure provides various methods, apparatus and computer-readable mediums supporting subscriptions to events in a core network. One method in a network exposure function for a core network comprises: providing, to a policy control function for the core network, a subscription request message indicating a request for a subscription for a plurality of terminal devices to receive notifications of events from the policy control function. The subscription request message comprises one or more of: an indication of one or more identifiers of events for which the plurality of terminal devices are to receive notifications; an indication of a type of resources to which the subscription relates; an indication of one or more services defined in the policy control function to which the subscription relates; and an indication as to whether notifications of events are to comprise an indication of one or more rules affected by the event.