Abstract: Various embodiments relate to a method performed by a network node for creating a Diameter session, the method including: receiving an S9 session request message comprising an S9 session identifier (ID) and one or more subsession IDs; and for each said one or more subsession IDs, creating a Diameter session with a session ID comprising said S9 session ID and said respective S9 subsession ID. Embodiments can add IP address information the Diameter session and are suited to handling subsequent Rx messages without subscriber information.

Abstract: Various embodiments relate to a method performed by a network node for terminating an S9 roaming session, the method including: receiving a Gx roaming session termination request; forwarding a corresponding S9 roaming session termination request to a controlling Policy and Charging Rule Function (PCRF) node; waiting a preconfigured time interval; and terminating the S9 roaming session without receiving an expected S9 acknowledgement message from the controlling PCRF node. Embodiments can include scheduling an IPCAN session audit for a selected IPCAN session of an S9 roaming session at preconfigured time intervals; generating an IPCAN session status request message; converting the IPCAN session status request message to a corresponding S9 status request message; forwarding the S9 status request message to a visited PCRF node; and responsive to receiving an S9 message indicating an unknown session from the visited PCRF node, removing the selected IPCAN session at the network node.

Abstract: Various embodiments relate to a method performed by a network node for terminating an S9 roaming session, the method including: receiving a Gx roaming session termination request; forwarding a corresponding S9 roaming session termination request to a controlling Policy and Charging Rule Function (PCRF) node; waiting a preconfigured time interval; and terminating the S9 roaming session without receiving an expected S9 acknowledgement message from the controlling PCRF node. Embodiments can include scheduling an IPCAN session audit for a selected IPCAN session of an S9 roaming session at preconfigured time intervals; generating an IPCAN session status request message; converting the IPCAN session status request message to a corresponding S9 status request message; forwarding the S9 status request message to a visited PCRF node; and responsive to receiving an S9 message indicating an unknown session from the visited PCRF node, removing the selected IPCAN session at the network node.

Abstract: Various embodiments relate to a method performed by a network node for creating a Diameter session, the method including: receiving an S9 session request message comprising an S9 session identifier (ID) and one or more subsession IDs; and for each said one or more subsession IDs, creating a Diameter session with a session ID comprising said S9 session ID and said respective S9 subsession ID. Embodiments can add IP address information the Diameter session and are suited to handling subsequent Rx messages without subscriber information.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules function (PCRF) node for selecting an Online Charging System (OCS), the method including: receiving a session establishment request for a subscriber (subscriber session); selecting an OCS realm for the subscriber session based on, in order of priority: policy rules, subscriber attribute or system preference; selecting an OCS host for the subscriber session based on, in order of priority: policy rules, subscriber attribute or system preference; and creating an Sy session using the selected OCS realm and selected OCS host.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN), the method including: receiving a credit control request (CCR) message from a packet data network gateway (PGW) based upon a general radio packet service (GPRS) internet protocol connectivity access network (IP-CAN) session request; determining that no operator policy rule specifies an aggregate maximum bit rate (APN-AMBR) value; determining that the CCR message includes an APN-AMBR value; setting an APN-AMBR value for the GPRS IP-CAN session to an APN-AMBR value for a subscriber associated with the GPRS IP-CAN session; setting a GPRS IP-CAN session maximum bit rate download/upload (MBR DL/UL) value to the lowest of the subscriber APN-AMBR value and a subscriber MBR DL/UL value; and sending a credit control answer (CCA) message to the PGW with the selected APN-AMBR and MBR DL/UL values.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: receiving the set of PCC rules at the network device from a partner device; determining that the set of PCC rules includes an unauthorized PCC rule, wherein the unauthorized PCC rule fails an authorization; determining that the set of PCC rules includes an authorized PCC rule, wherein the authorized PCC rule passes the authorization; generating an unauthorized rules list including an indication of the unauthorized PCC rule; generating an authorized rules list including an indication of the authorized PCC rule; transmitting the unauthorized rules list and the authorized rules list to the partner device.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN), the method including: receiving a credit control request (CCR) message from a packet data network gateway (PGW) based upon a general radio packet service (GPRS) internet protocol connectivity access network (IP-CAN) session request; determining that no operator policy rule specifies an aggregate maximum bit rate (APN-AMBR) value; determining that the CCR message includes an APN-AMBR value; setting an APN-AMBR value for the GPRS IP-CAN session to an APN-AMBR value for a subscriber associated with the GPRS IP-CAN session; setting a GPRS IP-CAN session maximum bit rate download/upload (MBR DL/UL) value to the lowest of the subscriber APN-AMBR value and a subscriber MBR DL/UL value; and sending a credit control answer (CCA) message to the PGW with the selected APN-AMBR and MBR DL/UL values.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN), the method including: receiving a credit control request (CCR) message from a packet data network gateway (PGW) based upon a general radio packet service (GPRS) internet protocol connectivity access network (IP-CAN) session request; determining that an operator policy rule specifies an aggregate maximum bit rate (APN-AMBR) value; determining that the CCR message includes an APN-AMBR value; setting an APN-AMBR value for the GPRS IP-CAN session to the APN-AMBR value specified by the operator policy rule; setting a GPRS IP-CAN session maximum bit rate download/upload (MBR DL/UL) value to the lowest of the APN-AMBR value specified by the operator policy rule and a subscriber MBR DL/UL value; and sending a credit control answer (CCA) message to the PGW with the selected APN-AMBR and MBR DL/UL values.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN) of updating a policy and charging control (PCC) rule. The method includes: receiving a filter update request comprising a new filter and a reference filter; matching the reference filter with a previously requested PCC rule; determining a set of filters associated with the service data flow; determining whether any filter of the set of filters is removed; and authorizing quality of service (QoS) information based on the remaining filters of the set of filters. Various exemplary embodiments relate to a non-transitory machine-readable storage medium encoded with instructions executable by a processor for performing the method.

Abstract: A method, and machine readable storage medium is disclosed for a method performed by policy and charging rules function (PCRF) node (PCRN) in a packet switching network, for identifying a Gn/Gp mode of an adjacent network node, in which the adjacent network node which is connected directly to a Serving General Packet Radio Service (GPRS) Support Node (SGSN) node via a Gn/Gp interface, from an adjacent network node connected to a Serving Gateway (S-GW) via a S5/S8 interface, wherein the adjacent network node is a Packet Data Network Gateway (P-GW) node or a Gateway GPRS Support Node (GGSN). The method comprises receiving at the PCRN from the adjacent network node, a Diameter Credit Control Request (CCR) message requesting a IP-CAN session; determining whether the request message includes a SGSN-Address and does not include an AN-GW-Address.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN), the method including: receiving a credit control request (CCR) message from a packet data network gateway (PGW) based upon a general radio packet service (GPRS) internet protocol connectivity access network (IP-CAN) session request; determining that an operator policy rule specifies an aggregate maximum bit rate (APN-AMBR) value; determining that the CCR message includes an APN-AMBR value; setting an APN-AMBR value for the GPRS IP-CAN session to the APN-AMBR value specified by the operator policy rule; setting a GPRS IP-CAN session maximum bit rate download/upload (MBR DL/UL) value to the lowest of the APN-AMBR value specified by the operator policy rule and a subscriber MBR DL/UL value; and sending a credit control answer (CCA) message to the PGW with the selected APN-AMBR and MBR DL/UL values.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN) of updating a policy and charging control (PCC) rule. The method includes: receiving a filter update request comprising a new filter and a reference filter; matching the reference filter with a previously requested PCC rule; determining a set of filters associated with the service data flow; determining whether any filter of the set of filters is removed; and authorizing quality of service (QoS) information based on the remaining filters of the set of filters. Various exemplary embodiments relate to a non-transitory machine-readable storage medium encoded with instructions executable by a processor for performing the method.

Abstract: Various exemplary embodiments relate to a method of identifying a subscriber at a network node. The method may include: receiving a message including a network access identifier (NAI); removing the first digit from the NAI to form a stripped NAI; determining whether the stripped NAI corresponds to a subscriber; determining whether the NAI corresponds to a subscriber; adding a hint digit to form an extended NAI, and determining whether the extended NAI corresponds to a subscriber; and if any of the NAIs correspond to a subscriber, using the corresponding NAI to identify the subscriber. Various exemplary embodiments relate to a policy and charging rules node including: a subscriber cache including a subscriber identifier; an interface configured to receive a NAI; a NAI modifier configured to form an extended NAI and a stripped NAI; and a subscriber identification module configured to determine whether a NAI is stored in the subscriber cache.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: receiving a message at the network device from a partner device; translating the message to generate a translated message formed according to a non-roaming protocol; processing the translated message to generate a response message; translating the response message to generate a translated response message formed according to a roaming protocol; transmitting the response message by the network device to the partner device.

Abstract: A method, and machine readable storage medium is disclosed for a method performed by policy and charging rules function (PCRF) node (PCRN) in a packet switching network, for identifying a Gn/Gp mode of an adjacent network node, in which the adjacent network node which is connected directly to a Serving General Packet Radio Service (GPRS) Support Node (SGSN) node via a Gn/Gp interface, from an adjacent network node connected to a Serving Gateway (S-GW) via a S5/S8 interface, wherein the adjacent network node is a Packet Data Network Gateway (P-GW) node or a Gateway GPRS Support Node (GGSN). The method comprises receiving at the PCRN from the adjacent network node, a Diameter Credit Control Request (CCR) message requesting a IP-CAN session; determining whether the request message includes a SGSN-Address and does not include an AN-GW-Address.

Abstract: Various exemplary embodiments relate to a method of matching a user roaming request with the users home network, the method comprising: receiving a user request that includes an international mobile subscriber identification (IMSI); extracting mobile country code (MCC) from the IMSI; extracting the next M digits from the IMSI as the mobile network code (MNC); searching a MCC-MNC database for the extracted MCC-MNC; if the extracted MCC-MNC is found in the MCC-MNC database, then associate the user request with an identified roaming partner.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: receiving the set of PCC rules at the network device from a partner device; determining that the set of PCC rules includes an unauthorized PCC rule, wherein the unauthorized PCC rule fails an authorization; determining that the set of PCC rules includes an authorized PCC rule, wherein the authorized PCC rule passes the authorization; generating an unauthorized rules list including an indication of the unauthorized PCC rule; generating an authorized rules list including an indication of the authorized PCC rule; transmitting the unauthorized rules list and the authorized rules list to the partner device.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: receiving, at the network device, a message; determining, in response to receiving the message, that a set of supported features should be transmitted to a partner device; determining, based on the partner device, whether a default set of features should be overridden; if the default set of supported features should be overridden, transmitting an alternative set of features to the partner device; and if the default set of supported features should not be overridden, transmitting a standard set of features based on the default set of features to the partner device.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN) for processing a change in a status of a roaming partner, the method including: receiving, at the PCRN, a message indicating a change in a status of the roaming partner; identifying roaming subscriber sessions associated with the roaming partner; determining home based roaming subscriber sessions among the identified subscriber sessions; marking the determined home based roaming subscriber sessions for termination; and sending a termination message to a policy and charging enforcement node for the determined home based roaming subscriber sessions.