Patents by Inventor Lars Gunnar Folke Ahlstrom
Lars Gunnar Folke Ahlstrom has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9407498Abstract: Embodiments of the invention include a method for providing UE session resilience performed in a first PDN-GW that is coupled to a second PDN-GW, which are both in a PDN-GW pool. The method provides UE session resilience by allowing the first PDN-GW to provide connectivity for UE sessions previously serviced by the second PDN-GW after the second PDN-GW becomes non-operational. The first PDN-GW recognizes that the second PDN-GW failed and then activates a plurality of standby UE sessions. Each standby UE session is a backup UE session corresponding to a previously active UE session serviced on the second PDN-GW. Each standby UE session is associated with a UE device and a network resource identifier of an APN slice. The first PDN-GW transmits a message to a SGW that is servicing the UE sessions that indicates that the SGW should direct traffic previously bound for the second PDN-GW to the first PDN-GW.Type: GrantFiled: May 5, 2015Date of Patent: August 2, 2016Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Staffan Bonnier, Hans-Ake Lund, Lars Gunnar Folke Ahlstrom
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Publication number: 20150236898Abstract: Embodiments of the invention include a method for providing UE session resilience performed in a first PDN-GW that is coupled to a second PDN-GW, which are both in a PDN-GW pool. The method provides UE session resilience by allowing the first PDN-GW to provide connectivity for UE sessions previously serviced by the second PDN-GW after the second PDN-GW becomes non-operational. The first PDN-GW recognizes that the second PDN-GW failed and then activates a plurality of standby UE sessions. Each standby UE session is a backup UE session corresponding to a previously active UE session serviced on the second PDN-GW. Each standby UE session is associated with a UE device and a network resource identifier of an APN slice. The first PDN-GW transmits a message to a SGW that is servicing the UE sessions that indicates that the SGW should direct traffic previously bound for the second PDN-GW to the first PDN-GW.Type: ApplicationFiled: May 5, 2015Publication date: August 20, 2015Inventors: STAFFAN BONNIER, HANS-AKE LUND, LARS GUNNAR FOLKE AHLSTROM
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Patent number: 9055081Abstract: Embodiments of the invention include a method for providing UE session resilience performed in a first PDN-GW that is coupled to a second PDN-GW, which are both in a PDN-GW pool. The method provides UE session resilience by allowing the first PDN-GW to provide connectivity for UE sessions previously serviced by the second PDN-GW after the second PDN-GW becomes non-operational. The first PDN-GW recognizes that the second PDN-GW failed and then activates a plurality of standby UE sessions. Each standby UE session is a backup UE session corresponding to a previously active UE session serviced on the second PDN-GW. Each standby UE session is associated with a UE device and a network resource identifier of an APN slice. The first PDN-GW transmits a message to a SGW that is servicing the UE sessions that indicates that the SGW should direct traffic previously bound for the second PDN-GW to the first PDN-GW.Type: GrantFiled: September 18, 2013Date of Patent: June 9, 2015Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Staffan Bonnier, Hans-Åke Lund, Lars Gunnar Folke Ahlström
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Patent number: 8797846Abstract: A serving gateway support node for a radio telecommunications network, in which the serving gateway support node is arranged to control at least one serving gateway to connect user equipment to a packet-based network via a home gateway and is also arranged to cause each serving gateway to hand over the connections between the user equipment and the packet-based network to other serving gateways while maintaining the user equipment's connection to the packet-based network as the user equipment roam throughout the radio telecommunications network, in which the serving gateway support node is arranged to detect a loss of connectivity The serving gateway support node is arranged to re-establish the connection from the user equipment to the packet-based data network via a serving gateway and a home gateway without interrupting the connection of the user equipment to the packet-based network.Type: GrantFiled: June 19, 2008Date of Patent: August 5, 2014Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Lasse Olsson, Lars Gunnar Folke Ahlström
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Publication number: 20140016456Abstract: Embodiments of the invention include a method for providing UE session resilience performed in a first PDN-GW that is coupled to a second PDN-GW, which are both in a PDN-GW pool. The method provides UE session resilience by allowing the first PDN-GW to provide connectivity for UE sessions previously serviced by the second PDN-GW after the second PDN-GW becomes non-operational. The first PDN-GW recognizes that the second PDN-GW failed and then activates a plurality of standby UE sessions. Each standby UE session is a backup UE session corresponding to a previously active UE session serviced on the second PDN-GW. Each standby UE session is associated with a UE device and a network resource identifier of an APN slice. The first PDN-GW transmits a message to a SGW that is servicing the UE sessions that indicates that the SGW should direct traffic previously bound for the second PDN-GW to the first PDN-GW.Type: ApplicationFiled: September 18, 2013Publication date: January 16, 2014Applicant: TELEFONKATIEBOLAGET L M ERICSSON (PUBL)Inventors: STAFFAN BONNIER, HANS-ÅKE LUND, LARS GUNNAR FOLKE AHLSTRÖM
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Patent number: 8559299Abstract: Embodiments of the invention include a method for providing UE session resilience performed in a first PDN-GW that is coupled to a second PDN-GW, which are both in a PDN-GW pool. The method provides UE session resilience by allowing the first PDN-GW to provide connectivity for UE sessions previously serviced by the second PDN-GW after the second PDN-GW becomes non-operational. The first PDN-GW recognizes that the second PDN-GW failed and then activates a plurality of standby UE sessions. Each standby UE session is a backup UE session corresponding to a previously active UE session serviced on the second PDN-GW. Each standby UE session is associated with a UE device and a network resource identifier of an APN slice. The first PDN-GW transmits a message to a SGW that is servicing the UE sessions that indicates that the SGW should direct traffic previously bound for the second PDN-GW to the first PDN-GW.Type: GrantFiled: November 30, 2010Date of Patent: October 15, 2013Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Staffan Bonnier, Hans-Åke Lund, Lars Gunnar Folke Ahlström
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Publication number: 20120134259Abstract: Embodiments of the invention include a method for providing UE session resilience performed in a first PDN-GW that is coupled to a second PDN-GW, which are both in a PDN-GW pool. The method provides UE session resilience by allowing the first PDN-GW to provide connectivity for UE sessions previously serviced by the second PDN-GW after the second PDN-GW becomes non-operational. The first PDN-GW recognizes that the second PDN-GW failed and then activates a plurality of standby UE sessions. Each standby UE session is a backup UE session corresponding to a previously active UE session serviced on the second PDN-GW. Each standby UE session is associated with a UE device and a network resource identifier of an APN slice. The first PDN-GW transmits a message to a SGW that is servicing the UE sessions that indicates that the SGW should direct traffic previously bound for the second PDN-GW to the first PDN-GW.Type: ApplicationFiled: November 30, 2010Publication date: May 31, 2012Inventors: STAFFAN BONNIER, HANS-ÅKE LUND, LARS GUNNAR FOLKE AHLSTRÖM
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Publication number: 20110141884Abstract: A serving gateway support node (9) for a radio telecommunications network (1), in which the serving gateway support node (9) is arranged to control at least one serving gateway (7) in the radio telecommunications network (1) to connect user equipment (2) to a packet-based network (4) via a home gateway (8) and is also arranged to cause each serving gateway (7) to hand over the connections between the user equipment (2) and the packet-based network (4) to other serving gateways (7) in the radio telecommunications network (1) whilst maintaining the user equipment's (2) connection to the packet-based network (4) as the user equipment (2) roam throughout the radio telecommunications network (1), in which the serving gateway support node (9) is arranged to detect a loss of connectivity between the user equipment (2) and the home gateway (8) or between the serving gateway support node (9) and a serving gateway (7), the serving gateway support node (9) is arranged to re-establish the connection from the user equipmeType: ApplicationFiled: June 19, 2008Publication date: June 16, 2011Inventors: Lasse Olsson, Lars Gunnar Folke Ahlström
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Publication number: 20080102867Abstract: A system node, and method in a radio telecommunication network for efficiently serving non-compliant mobile terminals (UE/MSs) and core network (CN) nodes without negatively affecting features available to compliant UE/MSs and nodes. A network service node such as an SGSN sends a standardized message to a UE/MS or CN node a reduced number of times while awaiting a response. If a proper response is not received, the SGSN removes “known problem” optional and/or conditional information elements from the message and sends an altered message to the UE/MS or CN node one or more times while awaiting a response. If the UE/MS or CN node responds to the altered message, it receives service with a reduced feature set. The SGSN may store an ID of the UE/MS or CN node in a list of non-compliant UE/MSs or CN nodes. In future sessions, the SGSN may send only the altered message to the UE/MS or CN node.Type: ApplicationFiled: October 1, 2007Publication date: May 1, 2008Inventors: Lasse Olsson, Peter Ramle, Lars Gunnar Folke Ahlstrom, Hans-Olof Sundell
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Patent number: 6405051Abstract: A technique for preventing voice announcements in a group call is provided. If any voice activity precedes a B-answer signal on a call to a party, that party is not added to the group call. This approach guarantees that no voice announcements will be added to the group call. With this approach, all subscribers are allowed to use voice mail systems, but subscribers currently forwarding messages to a voice mail system will not be connected to group calls.Type: GrantFiled: June 10, 1999Date of Patent: June 11, 2002Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Lars Gunnar Folke Ahlström, Jan Peter Ramle
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Patent number: 6366652Abstract: A technique for preventing voice announcements in a group call is provided. A VM tone begins a voice announcement of a voice mail system. Parties that cause the VM tone to be transmitted are not added to the group call. This approach guarantees that no voice announcements will be added to the group call. With this approach, all subscribers are allowed to use voice mail systems, but the subscribers currently forwarding messages to voice mail will not be connected to group calls.Type: GrantFiled: June 10, 1999Date of Patent: April 2, 2002Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Lars Gunnar Folke Ahlström, Jan Peter Ramle
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Patent number: 6154645Abstract: A technique for preventing voice announcements in a group call is provided. A mobile station is configured to generate an MS tone in response to receiving an individual call from a group controller. The MS tone identifies to the group controller that the mobile station has been reached. Upon receiving and detecting the MS tone, the group controller adds the mobile station to the group call. This approach guarantees that no voice announcements will be added to the group call. With this approach, all subscribers are allowed to use voice mail systems, but the subscribers currently forwarding messages to voice mail will not be connected to group calls.Type: GrantFiled: June 10, 1999Date of Patent: November 28, 2000Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Lars Gunnar Folke Ahlstrom, Jan Peter Ramle