US Patent 7941547 Policy information in multiple PDFs

The invention proposes a method for establishing sessions in a network comprising a user entity, a network control node and a plurality of network nodes storing subscriber specific information, the method comprising the steps of receiving a session establishing request at the network control node, forwarding a policy request message from the network control node to each network node of the plurality of network nodes storing subscriber specific information comprising policy information required for the session to be established, processing the policy request message to generate a policy decision message and sending the policy decision message to the network control node from each of the network nodes having received the policy request message, generating a single policy decision confirmation message based on the received policy decision messages in the network control node, and sending the single policy decision message to the user entity.