Abstract: The invention relates to a method for managing the quality of service that applies to a packet mode mobile communications network, in particular, characterised in that it includes, in the case of a network overload when accessing the resources of the network in order to execute a service for a network subscriber, a stage that consists in the following, at the level of each of the network nodes: determining an overall priority level for said access to resources, defined by a combination of at least one quality of service parameter related to the type of service and at least one quality of service parameter corresponding to the subscriber priority level, and applying at least one predefined quality of service process to the data stream that corresponds to said service, according to said determined overall priority level.