Recovery of a System for Policy Control and Charging, Said System Having a Redundancy of Policy and Charging Rules Function
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Accused Products
Abstract
A first Policy and Charging Rules Function “PCRF” server for recovery of a Policy and Charging Control “PCC” system. The PCC system also has a second PCRF server previously in charge of controlling an Internet Protocol Connectivity Access Network “IP-CAN” session previously established with a UE, and a PCRF-client. The first PCRF server includes a network interface unit of the first PCRF server arranged for receiving a modification request of the IP-CAN session from the PCRF-client after failure of the second PCRF server which was in active mode. The first PCRF server has a PCRF identifier which is shared with the second PCRF server that has failed. The first PCRF server now in active mode. The modification request requesting new rules for the IP-CAN session, including modification data and excluding access data and supported features for the IP-CAN session. The first PCRF server includes a processing unit of the first PCRF server arranged for determining that the IP-CAN session is unknown, and arranged for submitting a request from the network interface unit of the first PCRF server to the PCRF-client to provide all information that the PCRF-client has regarding the IP-CAN session. The information includes all data required to be sent for the IP-CAN session establishment and synchronization data. A Policy and Charging Rules Function “PCRF”-client for recovery of a Policy and Charging Control “PCC” system. Methods for recovery of a Policy and Charging Control “PCC” system with a first Policy and Charging Rules Function “PCRF” server in standby mode, a second PCRF server in active mode, and a PCRF-client, wherein an IP-CAN session is already established with a UE and controlled by the second PCRF server. A computer program embodied on a computer readable medium for recovery of a Policy and Charging Control “PCC” system.
66 Citations
42 Claims
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1-21. -21. (canceled)
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22. A method for recovery of a Policy and Charging Control (PCC) system with a first Policy and Charging Rules Function (PCRF) server in standby mode, a second PCRF server in active mode, and a PCRF client, wherein an Internet Protocol Connectivity Access Network (IP-CAN) session is already established with a user entity (UE) and controlled by the second PCRF server, the method comprising:
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receiving at a network interface unit of the first PCRF server a modification request of the IP-CAN session from the PCRF client after failure of the second PCRF server which was in active mode, the first PCRF server having a PCRF identifier which is shared with the second PCRF server that has failed, the first PCRF server now in active mode, the modification request requesting new rules for the IP-CAN session including modification data and excluding access data and supported features for the IP-CAN session; determining by a processing unit of the first PCRF server that the IP-CAN session is unknown; and sending a request from the network interface unit of the first PCRF server to the PCRF client to provide all information that the PCRF client has regarding the IP-CAN session, the information including all data required to be sent for the IP-CAN session establishment and synchronization data. - View Dependent Claims (23, 24, 25, 26, 27)
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28. A method for recovery of a Policy and Charging Control (PCC) system with a first Policy and Charging Rules Function (PCRF) server in standby mode, a second PCRF server in active mode, and a PCRF client, wherein an Internet Protocol Connectivity Access Network (IP CAN) session is already established with a user entity (UE) and controlled by the second PCRF server, the method comprising:
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receiving at a network interface unit of the PCRF client a modification of the IP-CAN session, from the UE or from a network node, after the second PCRF server has failed; sending a request from the interface unit of the PCRF client to the first PCRF server, by using a PCRF identifier of the second PCRF server, for new control rules for the IP-CAN session, the request including modification data and excluding access data and supported features for the IP-CAN session, the first PCRF server now in active mode, the first PCRF server sharing the PCRF identifier with the second PCRF server that has failed; receiving at the network interface unit of the PCRF client a request from the first PCRF server requesting all information that the PCRF client has regarding the IP-CAN session, the information including all data required to be sent for the IP-CAN session establishment and synchronization data; sending from the network interface unit of the PCRF client to the first PCRF server all the information the PCRF client has in a memory of the PCRF client regarding the IP-CAN session, including access data, supported features, and IP-CAN session establishment data as synchronization data; receiving at the network interface unit of the PCRF client from the first PCRF server the new control rules for the IP-CAN session; and enforcing the new control rules with a processing unit of the PCRF client for the IP-CAN session. - View Dependent Claims (29, 30, 31)
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32. A first Policy and Charging Rules Function (PCRF) server for recovery of a Policy and Charging Control (PCC) system, the PCC system also having a second PCRF server previously in charge of controlling an Internet Protocol Connectivity Access Network (IP-CAN) session previously established with a user entity (UE), and a PCRF client, the first PCRF server comprising:
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a network interface unit configured for receiving a modification request of the IP-CAN session from the PCRF client after failure of the second PCRF server which was in active mode, the first PCRF server having a PCRF identifier which is shared with the second PCRF server that has failed, the first PCRF server now in active mode, the modification request requesting new rules for the IP-CAN session, including modification data and excluding access data and supported features for the IP-CAN session; and a processing unit configured for determining that the IP-CAN session is unknown, and for submitting a request from the network interface unit of the first PCRF server to the PCRF client to provide all information that the PCRF client has regarding the IP-CAN session, the information including all data required to be sent for the IP-CAN session establishment and synchronization data. - View Dependent Claims (33, 34, 35, 36)
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37. A Policy and Charging Rules Function (PCRF) client for recovery of a Policy and Charging Control (PCC) system, the PCC system also having a first Policy PCRF server in standby mode, and a second PCRF server in active mode, wherein an Internet Protocol Connectivity Access Network (IP CAN) session is already established with a user entity (UE) and controlled by the second PCRF server, the PCRF client comprising:
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a network interface unit configured for receiving a modification of the IP-CAN session, from the UE or from a network node, after the second PCRF server has failed; a processing unit configured for submitting a request from the network interface unit to the first PCRF server using a PCRF identifier of the second PCRF server for new control rules for the IP-CAN session, the request including modification data and excluding access data and supported features for the IP-CAN session, the first PCRF server now in active mode, the first PCRF server sharing the PCRF identifier with the second PCRF server that has failed; a memory in communication with the network interface unit and the processing unit configured for storing IP-CAN session information; wherein the network interface unit is configured for receiving a request from the first PCRF server requesting all information that the PCRF client has regarding the IP-CAN session, the information including all data required to be sent for the IP-CAN session establishment and synchronization data; and the network interface unit is configured for sending to the first PCRF server all the information the PCRF client has in the memory regarding the IP-CAN session, including access data, supported features, and IP-CAN session establishment data as synchronization data; the network interface unit is configured for receiving from the first PCRF server the new control rules for the IP-CAN session; and the processing unit is configured for enforcing the new control rules for the IP-CAN session. - View Dependent Claims (38, 39, 40)
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41. A non-transitory computer-readable medium having stored instructions that, when executed by a computer, cause the computer to carry out a method for recovery of a Policy and Charging Control (PCC) system with a first Policy and Charging Rules Function (PCRF) server in standby mode, a second PCRF server in active mode, and a PCRF client, wherein an Internet Protocol Connectivity Access Network (IP-CAN) session is already established with a user entity (UE) and controlled by the second PCRF server, and the method comprises:
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receiving at a network interface unit of the first PCRF server a modification request of the IP-CAN session from the PCRF client after failure of the second PCRF server which was in active mode, the first PCRF server having a PCRF identifier which is shared with the second PCRF server that has failed, the first PCRF server now in active mode, the modification request requesting new rules for the IP-CAN session including modification data and excluding access data and supported features for the IP-CAN session; determining by a processing unit of the first PCRF server that the IP-CAN session is unknown; and sending a request from the network interface unit of the first PCRF server to the PCRF client to provide all information that the PCRF client has regarding the IP-CAN session, the information including all data required to be sent for the IP-CAN session establishment and synchronization data.
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42. A non-transitory computer-readable medium having stored instructions that, when executed by a computer, cause the computer to carry out a method for recovery of a Policy and Charging Control (PCC) system with a first Policy and Charging Rules Function (PCRF) server in standby mode, a second PCRF server in active mode, and a PCRF client, wherein an Internet Protocol Connectivity Access Network (IP CAN) session is already established with a user entity (UE) and controlled by the second PCRF server, the method comprising:
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receiving at a network interface unit of the PCRF client a modification of the IP-CAN session, from the UE or from a network node, after the second PCRF server has failed; sending a request from the interface unit of the PCRF client to the first PCRF server, by using a PCRF identifier of the second PCRF server, for new control rules for the IP-CAN session, the request including modification data and excluding access data and supported features for the IP-CAN session, the first PCRF server now in active mode, the first PCRF server sharing the PCRF identifier with the second PCRF server that has failed; receiving at the network interface unit of the PCRF client a request from the first PCRF server requesting all information that the PCRF client has regarding the IP-CAN session, the information including all data required to be sent for the IP-CAN session establishment and synchronization data; sending from the network interface unit of the PCRF client to the first PCRF server all the information the PCRF client has in a memory of the PCRF client regarding the IP-CAN session, including access data, supported features, and IP-CAN session establishment data as synchronization data; receiving at the network interface unit of the PCRF client from the first PCRF server the new control rules for the IP-CAN session; and enforcing the new control rules with a processing unit of the PCRF client for the IP-CAN session.
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Specification