An apparatus in one example may have a functionality of a policy decision
function divided into two parts; one part representing a home network
application function and the other part representing visited network
bearer resources and local policies. The one part of the policy decision
function supports communications with the application function, and
represents the home network and application in a request for QoS control
to the visited network. The other part of the policy decision function
supports visited network interactions with a policy enforcement function,
and represents visited network local policy related to resource
utilization and roaming agreement-based policy.