Patents by Inventor Mats Fredrik Sagfors
Mats Fredrik Sagfors 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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Publication number: 20230084733Abstract: Coverage of a power-limited mobile terminal is enhanced by sending information relating to a single Hybrid Automatic Repeat Request (HARQ) process from the mobile terminal to a base station using several transmission time intervals.Type: ApplicationFiled: November 23, 2022Publication date: March 16, 2023Inventors: Mats Fredrik Sagfors, Michael Meyer, Per Johan Torsner, Henning Wiemann
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Patent number: 11533130Abstract: Coverage of a power-limited mobile terminal is enhanced by sending information relating to a single Hybrid Automatic Repeat Request (HARQ) process from the mobile terminal to a base station using several transmission time intervals.Type: GrantFiled: December 29, 2020Date of Patent: December 20, 2022Assignee: Optis Wireless Technology, LLCInventors: Mats Fredrik Sagfors, Michael Meyer, Per Johan Torsner, Henning Wiemann
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Publication number: 20210119737Abstract: Coverage of a power-limited mobile terminal is enhanced by sending information relating to a single Hybrid Automatic Repeat Request (HARQ) process from the mobile terminal to a base station using several transmission time intervals.Type: ApplicationFiled: December 29, 2020Publication date: April 22, 2021Inventors: Mats Fredrik Sagfors, Michael Meyer, Per Johan Torsner, Henning Wiemann
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Patent number: 10903940Abstract: The present invention relates to a method and device for enhancing coverage of a power-limited mobile terminal by sending information relating to a single Hybrid Automatic Repeat Request (HARQ) process from the mobile terminal to a base station using several transmission time intervals.Type: GrantFiled: May 26, 2017Date of Patent: January 26, 2021Assignee: Optis Wireless Technology, LLCInventors: Mats Fredrik Sagfors, Michael Meyer, Per Johan Torsner, Henning Wiemann
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Patent number: 10595290Abstract: A procedure for synchronization of re-configuration of RRC procedures between the radio base station and the UE is achieved by associating a new configuration to be used by a UE with an additional UE identity. The UE is normally identified by a first UE identity, but is informed in a re-configuration message that the UE also has the additional UE identity. The UE is identified by the additional UE identity when the new configuration is to be activated. Hence, when the radio base station detects that the UE responds to requests, which included the additional UE identity, the radio base station can conclude that the UE has activated the new configuration.Type: GrantFiled: May 14, 2018Date of Patent: March 17, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Mats Fredrik Sågfors, Magnus Johansson, George Jöngren, Magnus Stattin, Per Johan Torsner
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Patent number: 10187837Abstract: A mobile station is configured to support handover from a source base station to a target base station. The mobile station receives signaling from the target base station that indicates Packet Data Convergence Protocol (PDCP) protocol data units which have been successfully received at the target base station. In response, the mobile station generates further PDCP protocol data units for missing PDCP service data units from corresponding PDCP service data units buffered at the mobile station. The generating comprises using a different header compression state from that which was used for the missing PDCP service data units and ciphering specific to a connection with the target base station. The mobile station transmits the further PDCP protocol data units to the target base station.Type: GrantFiled: December 5, 2017Date of Patent: January 22, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Magnus Stattin, Michael Meyer, Janne Peisa, Ghyslain Pelletier, Mats Fredrik Sågfors, Per Johan Torsner, Henning Wiemann
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Publication number: 20180263005Abstract: A procedure for synchronization of re-configuration of RRC procedures between the radio base station and the UE is achieved by associating a new configuration to be used by a UE with an additional UE identity. The UE is normally identified by a first UE identity, but is informed in a re-configuration message that the UE also has the additional UE identity. The UE is identified by the additional UE identity when the new configuration is to be activated. Hence, when the radio base station detects that the UE responds to requests, which included the additional UE identity, the radio base station can conclude that the UE has activated the new configuration.Type: ApplicationFiled: May 14, 2018Publication date: September 13, 2018Inventors: Mats Fredrik Sågfors, Magnus Johansson, George Jöngren, Magnus Stattin, Per Johan Torsner
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Patent number: 9974034Abstract: A procedure for synchronization of re-configuration of RRC procedures between the radio base station and the UE is achieved by associating a new configuration to be used by a UE with an additional UE identity. The UE is normally identified by a first UE identity, but is informed in a re-configuration message that the UE also has the additional UE identity. The UE is identified by the additional UE identity when the new configuration is to be activated. Hence, when the radio base station detects that the UE responds to requests, which included the additional UE identity, the radio base station can conclude that the UE has activated the new configuration.Type: GrantFiled: October 16, 2013Date of Patent: May 15, 2018Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Mats Fredrik Sågfors, Magnus Johansson, George Jöngren, Magnus Stattin, Per Johan Torsner
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Publication number: 20180123740Abstract: A user equipment unit (30) and a base station node (28) which is configured for operation with a synchronous HARQ protocol and with capability of sending data on an E-DCH channel either (1) in a nominal mode in single transmission time intervals of a predetermined length, or (2) in an extended mode in a pseudo transmission time interval. The pseudo transmission time interval comprises a first transmission time interval in which the data is transmitted and a second transmission time interval in which the data is re-transmitted. The second transmission time interval is consecutive to the first transmission time interval, and the first transmission time interval and the second transmission time interval are each of the (same) predetermined length.Type: ApplicationFiled: December 19, 2017Publication date: May 3, 2018Inventors: Per Johan TORSNER, Eva ENGLUND, Stefan PARKVALL, Mats Fredrik SÅGFORS
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Publication number: 20180098257Abstract: A mobile station is configured to support handover from a source base station to a target base station. The mobile station receives signaling from the target base station that indicates Packet Data Convergence Protocol (PDCP) protocol data units which have been successfully received at the target base station. In response, the mobile station generates further PDCP protocol data units for missing PDCP service data units from corresponding PDCP service data units buffered at the mobile station. The generating comprises using a different header compression state from that which was used for the missing PDCP service data units and ciphering specific to a connection with the target base station. The mobile station transmits the further PDCP protocol data units to the target base station.Type: ApplicationFiled: December 5, 2017Publication date: April 5, 2018Inventors: Magnus Stattin, Michael Meyer, Janne Peisa, Ghyslain Pelletier, Mats Fredrik Sågfors, Per Johan Torsner, Henning Wiemann
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Patent number: 9918307Abstract: UTRAN MAC-d multiplexing of data from multiple logical channels to a single MAC-d flow is supported while reducing overhead and achieving octet alignment in MAC-d PDU length. In one embodiment, the C/T field of a multiplexed MAC-d PDU is eliminated, and the logical channels multiplexed into the MAC-d flow are mapped to a MAC-hs PQ in at least the NodeB (and preferably in the UE as well). In other embodiments, the C/T field is retained, and an octet-aligned length indicator is transmitted from the RNC to the UE. In one embodiment, the length indicator is octet-aligned by padding the MAC-d PDUs. In another embodiment, transmitters and receivers in the path from RNC to UE are configured with an offset to add to the length indicator to achieve octet alignment. The padding or offset is (8?n) bits, where n=the number of bits in C/T field.Type: GrantFiled: April 15, 2016Date of Patent: March 13, 2018Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Anna Larmo, Stefan Henrik Wager, Janne Peisa, Per Johan Torsner, Mats Fredrik Sågfors
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Patent number: 9882683Abstract: A user equipment unit (30) and a base station node (28) which is configured for operation with a synchronous HARQ protocol and with capability of sending data on an E-DCH channel either (1) in a nominal mode in single transmission time intervals of a predetermined length, or (2) in an extended mode in a pseudo transmission time interval. The pseudo transmission time interval comprises a first transmission time interval in which the data is transmitted and a second transmission time interval in which the data is re-transmitted. The second transmission time interval is consecutive to the first transmission time interval, and the first transmission time interval and the second transmission time interval are each of the (same) predetermined length.Type: GrantFiled: September 28, 2006Date of Patent: January 30, 2018Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Per Johan Torsner, Eva Englund, Stefan Parkvall, Mats Fredrik Sagfors
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Patent number: 9877252Abstract: A mobile station in a Long Term Evolution (LTE) communication network transmits Packet Data Convergence Protocol (PDCP) protocol data units to a base station and the base station transfers corresponding PDCP service data units to a core network. The mobile station is configured to support handover from a source base station to a target base station. The mobile station generates new PDCP protocol data units for missing PDCP service data units, and transmits the new PDCP protocol data units to the target base station, responsive to signaling from the target base station that indicates which PDCP service data units have been successfully received at the target base station. The new PDCP protocol data units are generated using ciphering specific to the connection with the target base station, from corresponding PDCP service data units buffered at the mobile station.Type: GrantFiled: August 5, 2016Date of Patent: January 23, 2018Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Magnus Stattin, Michael Meyer, Janne Peisa, Ghyslain Pelletier, Mats Fredrik Sågfors, Per Johan Torsner, Henning Wiemann
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Publication number: 20170264396Abstract: The present invention relates to a method and device for enhancing coverage of a power-limited mobile terminal by sending information relating to a single Hybrid Automatic Repeat Request (HARQ) process from the mobile terminal to a base station using several transmission time intervals.Type: ApplicationFiled: May 26, 2017Publication date: September 14, 2017Inventors: Mats Fredrik Sagfors, Michael Meyer, Per Johan Torsner, Henning Wiemann
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Patent number: 9698942Abstract: The present invention relates to a method and device for enhancing coverage of a power-limited mobile terminal by sending information relating to a single Hybrid Automatic Repeat Request (HARQ) process from the mobile terminal to a base station using several transmission time intervals.Type: GrantFiled: February 23, 2015Date of Patent: July 4, 2017Assignee: OPTIS WIRELESS TECHNOLOGY, LLCInventors: Mats Fredrik Sagfors, Michael Meyer, Per Johan Torsner, Henning Wiemann
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Publication number: 20160360459Abstract: A mobile station in a Long Term Evolution (LTE) communication network transmits Packet Data Convergence Protocol (PDCP) protocol data units to a base station and the base station transfers corresponding PDCP service data units to a core network. The mobile station is configured to support handover from a source base station to a target base station. The mobile station generates new PDCP protocol data units for missing PDCP service data units, and transmits the new PDCP protocol data units to the target base station, responsive to signaling from the target base station that indicates which PDCP service data units have been successfully received at the target base station. The new PDCP protocol data units are generated using ciphering specific to the connection with the target base station, from corresponding PDCP service data units buffered at the mobile station.Type: ApplicationFiled: August 5, 2016Publication date: December 8, 2016Inventors: Magnus Stattin, Michael Meyer, Janne Peisa, Ghyslain Pelletier, Mats Fredrik Sågfors, Per Johan Torsner, Henning Wiemann
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Patent number: 9426710Abstract: In a wireless communication network where base stations receive protocol data units (PDUs) from mobile stations for decompression and deciphering for ordered, sequential transfer as service data units (SDUs) to an associated core network, the teachings presented herein provide a method of supporting seamless handover of a mobile station from a source base station to a target base station. By way of example, the teachings herein apply to a network based on the E-UTRA specifications, as promulgated by the 3GPP. However, that example is non-limiting, as the teachings herein apply to any network that employs in-sequence data delivery and duplicate data detection at handover. Broadly, the source base station forwards out-of-sequence SDUs and corresponding sequence number information to the target base station in support of seamless handover, and the target base station uses that information to request retransmissions as needed for packet reordering.Type: GrantFiled: July 25, 2014Date of Patent: August 23, 2016Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Magnus Stattin, Michael Meyer, Janne Peisa, Ghyslain Pelletier, Mats Fredrik Sågfors, Per Johan Torsner, Henning Wiemann
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Publication number: 20160234814Abstract: UTRAN MAC-d multiplexing of data from multiple logical channels to a single MAC-d flow is supported while reducing overhead and achieving octet alignment in MAC-d PDU length. In one embodiment, the C/T field of a multiplexed MAC-d PDU is eliminated, and the logical channels multiplexed into the MAC-d flow are mapped to a MAC-hs PQ in at least the NodeB (and preferably in the UE as well). In other embodiments, the C/T field is retained, and an octet-aligned length indicator is transmitted from the RNC to the UE. In one embodiment, the length indicator is octet-aligned by padding the MAC-d PDUs. In another embodiment, transmitters and receivers in the path from RNC to UE are configured with an offset to add to the length indicator to achieve octet alignment. The padding or offset is (8?n) bits, where n=the number of bits in C/T field.Type: ApplicationFiled: April 15, 2016Publication date: August 11, 2016Inventors: Anna Larmo, Stefan Henrik Wager, Janne Peisa, Per Johan Torsner, Mats Fredrik Sågfors
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Patent number: 9386596Abstract: A packet service enhancement mode (60) and packet service enhancer (35) is provided for operating a packet channel (25) existing over an air interface (27) between a base station node and a user equipment unit of a telecommunications network. As one aspect of the technology, a packet service enhancement method comprises performing a monitoring of a radio link connection carried by the packet channel and, in accordance with the monitoring, both modifying an operational parameter for the packet channel and dropping non-consecutive packets from the packet channel.Type: GrantFiled: December 29, 2006Date of Patent: July 5, 2016Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Janne Peisa, Håkan Olofsson, Mats Fredrik Sågfors, Per Synnergren
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Patent number: RE49808Abstract: A mobile station is configured to support handover from a source base station to a target base station. The mobile station receives signaling from the target base station that indicates Packet Data Convergence Protocol (PDCP) protocol data units which have been successfully received at the target base station. In response, the mobile station generates further PDCP protocol data units for missing PDCP service data units from corresponding PDCP service data units buffered at the mobile station. The generating comprises using a different header compression state from that which was used for the missing PDCP service data units and ciphering specific to a connection with the target base station. The mobile station transmits the further PDCP protocol data units to the target base station.Type: GrantFiled: January 21, 2021Date of Patent: January 16, 2024Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Magnus Stattin, Michael Meyer, Janne Peisa, Ghyslain Pelletier, Mats Fredrik Sågfors, Per Johan Torsner, Henning Wiemann