Patent ID: 9380446
Filing Date: 2016-06-28
CPC Classification: H04L,H04M,H04W

Claim Text:
1. A policy and charging control method for supporting IP flow mobility in a roaming scenario, comprising: sending by a Home Policy and Charging Rules Function (H-PCRF), an event trigger to a Visited Policy and Charging Rules Function (V-PCRF); when the V-PCRF receives IP flow mobility routing rule information reported by a Policy and Charging Enforcement Function (PCEF), and if the H-PCRF subscribes to an IP Connectivity Access Network type change (IP-CAN_CHANGE) event trigger or to an access node gateway change (AN_GW_CHANGE) event trigger, reporting by the V-PCRF, the IP flow mobility routing rule information to the H-PCRF; if the H-PCRF does not subscribe to the IP-CAN_CHANGE event trigger or the AN_GW_CHANGE event trigger, handling, by the V-PCRF, the IP flow mobility locally, which comprises: wherein the IP flow mobility routing rule information comprises: installing, modifying or removing the IP flow mobility routing rule, and the IP flow mobility routing rule is a corresponding relationship between a service data flow and the 3GPP access or non-3GPP access; wherein, the H-PCRF subscribes to the IP-CAN_CHANGE event trigger or to the AN_GW_CHANGE event trigger by including an IP-CAN_CHANGE or an AN_GW_CHANGE in the values of the event trigger being sent to the V-PCRF.