Removal of application identifier

A user plane entity configured to handle a user plane of data packet sessions exchanged in a cellular network, each data packet session comprising data packet flows of a plurality of applications, the data packet flows of each application being identified by an application identifier, the user plane entity comprising a memory and at least one processing unit, the memory containing instructions executable by said at least one processing unit, the user plane entity being configured to:

• determine that a tracking of data packet flows identified by an application identifier should be stopped;
• determine one or more application detection filters configured to detect data packet flows identified by the application identifier;
• remove the one or more application detection filters and the application identifier from the user plane entity;
• request a session control entity configured to control the data packet sessions to remove packet detection rules usable to detect the data packet flows identified by the application identifier, the request includes including the application identifier.

A session control entity configured to control data packet sessions exchanged in a cellular network, each data packet session comprising data packet flows of a plurality of applications, and the data packet flows of each application being identified by an application identifier, the session control entity comprising a memory and at least one processing unit, the memory containing instructions executable by the at least one processing unit, the session control entity being configured to:

• receive a request to remove packet detection rules usable to detect data packet flows identified by an application identifier, wherein the request includes the application identifier;
• determine at least one packet detection rule which includes the application identifier;
• remove the at least one packet detection rule in the session control entity in response to the received request;
• and
• request a policy control entity to update policy and charging control rules in the policy control entity by removal of the application identifier, the request including the application identifier.

A policy control entity configured to make policy decisions for data packet sessions exchanged in a cellular network, each data packet session comprising data packet flows of a plurality of applications, and the data packet flows of each application being identified by an application identifier, the policy controller comprising a memory and at least one processing unit, the memory containing instructions executable by said at least one processing unit, the policy control entity being configured to:

• receive a request from a session control entity to update policy and charging control rules in the policy control entity by removal of an application identifier, the request includes including the application identifier;
• determine one or more policy and charging control rules which include the application identifier;
• and
• remove the application identifier from the determined one or more policy and charging control rules in response to the received request.

A packet flow description entity configured to store application identifiers and associated packet flow descriptions for data packet sessions exchanged in a cellular network, each data packet session comprising data packet flows of a plurality of applications, and the data packet flows of each application being identified by an application identifier, the packet flow description entity comprising a memory and at least one processing unit, the memory containing instructions executable by the at least one processing unit, the packet flow description entity being configured to:

• receive a request to remove an application identifier and associated packet flow descriptions, wherein the request includes the application identifier;
• determine one or more packet flow descriptions associated with the application identifier;
• and
• remove the application identifier and the determined one of more packet flow descriptions in response to the received request.