Patent ID: 9655124
Date: 2017-05-16
CPC Classifications: H04L,H04W

Claim:
1. A method for operating a Policy and Charging Resource Function (PCRF) node in a communications network, the communications network including multiple user equipments, UEs, and multiple network address translation 64, NAT64, nodes, the PCRF node including subscription information for one or more of the UEs, the subscription information for each UE including translation state usage information associated with one or more of the NAT64 nodes servicing that UE, wherein the subscription information is obtained from a Subscriber Policy Repository (SPR) node, the method comprising: collecting translation state usage information by receiving an update message from each of the NAT64 nodes, the update message indicating a current number of translation states each Nat64 node has allocated to each UE serviced by that NAT64 node; identifying a set of one or more UE(s) exceeding a maximum translation state usage allocated to each of the multiple UEs based on the corresponding subscription information and the collected translation state usage information; adjusting the translation state usage information in the subscription information of the identified set of UE(s) to meet the maximum translation state usage for each UE, and updating the corresponding subscription information; and transmitting the updated subscription information of the identified set of UE(s) to the corresponding NAT64 nodes.