Patent ID: 9119114
Filing Date: 2015-08-25
Classification: H04W

Abstract:
1. A method for updating tunnel information, comprising: receiving, by a Mobility Management Entity (MME), tunnel information from a target Home evolved NodeB (HeNB) to which a User Equipment (UE) is to be handed over through a handover acknowledgement message, a handover notification message, or a path converting request message; and notifying, by the MME, a fixed network of the received tunnel information through an Evolved Packet Core (EPC) gateway and a Policy and Charging Rules Function entity (PCRF), when there is no S9* session between the PCRF and a BPCF before the handover, the PCRF selects a BPCF according to the received tunnel information, initiates an S9* session establishing operation, and sends the tunnel information to the selected BPCF; and when there exists an S9* session between the PCRF and a BPCF before the handover, the PCRF verifies whether the BPCF having the S9* session between itself and the PCRF is the one indicated by the tunnel information: if so, the PCRF initiates an S9* session modifying operation, and sends the tunnel information to the BPCF; otherwise the PCRF re-selects a BPCF according to the tunnel information, initiates the S9* session establishing operation, and sends the tunnel information to the re-selected BPCF.