1. A method for automatic, recurrent enforcement of a policy rule, the method comprising: providing, to a node for enforcing policy rules in a telecommunications network, an automatically recurrent policy rule, the policy rule defining an enforcement activation condition and including an enforcement recurrence attribute comprising at least one of a recurrence interval and a number of recurrences, wherein providing an automatically recurrent policy rule to the node includes transmitting a Diameter signaling message specifying the automatically recurrent policy rule to the node; and using, at the node, the enforcement activation condition and the enforcement recurrence attribute to automatically recurrently activate the enforcement of the policy rule according to the enforcement recurrence attribute, wherein using the enforcement activation condition and the enforcement recurrence attribute to automatically activate the enforcement of the policy rule according to the enforcement recurrence attribute comprises: determining whether the enforcement activation condition for the policy rule has been satisfied, and, upon a determination that the enforcement activation condition for the policy rule has been satisfied, activating enforcement of the policy rule; determining, based on the enforcement activation condition and the enforcement recurrence attribute, whether enforcement of the policy rule should be deactivated, and, upon a determination that enforcement of the policy rule should be deactivated, deactivating enforcement of the policy rule; and determining, based on the enforcement recurrence attribute, a next recurrence of the activation of the policy rule.