Patents by Inventor Mårten WAHLSTRÖM
Mårten WAHLSTRÖM 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: 11864139Abstract: A method performed by a transmitting device, for handling communication in a wireless communications network. The transmitting device transmits a Precision Time Protocol, PTP, message carrying synchronization information to a receiving device over a radio interface.Type: GrantFiled: January 30, 2020Date of Patent: January 2, 2024Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Stefano Ruffini, Magnus Sandgren, Robert Baldemair, Anders Höglund, Mårten Wahlström
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Patent number: 11812398Abstract: A group of radio network nodes (14) performs automatic synchronization source selection using Radio-interface Based Synchronization, based on the exchange of clock-attribute information between respective nodes (14) via inter-node connections. Access to the clock-attribute information for other nodes (14) in the same domain or subdomain allows a given node (14) to select the best or most preferred synchronization source for use in synchronizing its own clock (44), based on a combined or joint evaluation of parameters or metrics that include the reception quality of OTA signals from respective ones of the candidate nodes (14) and the corresponding clock-attribute information. Further parameters or metrics may be evaluated in the selection, such as neighbor-relation considerations. The combined use of OTA synchronization signaling and clock-attribute information exchanges, e.g.Type: GrantFiled: February 28, 2019Date of Patent: November 7, 2023Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Stefano Ruffini, Garry Irvine, Ohan Khodaverdian, Magnus Sandgren, Mårten Wahlström
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Publication number: 20230299865Abstract: Systems and methods to enable 5G system support for conveying time synchronization are provided. In some embodiments, a method performed by a wireless device for conveying external time domain information is provided. The method includes receiving a message in a first time domain used by the wireless device, the message comprising external time domain information; determining information about a second time domain based on the external time domain information; and conveying information about the second time domain to another node. In some embodiments, timing information is included into a GPRS Tunneling Protocol (GTP) payload, and the wireless device can get timing information directly from the data payload. This minimizes the RAN and/or gNB impact and adds the potential for multiple time domain support.Type: ApplicationFiled: May 24, 2023Publication date: September 21, 2023Inventors: Kun Wang, John Walter Diachina, Anders Höglund, Dinand Roeland, Stefano Ruffini, Magnus Sandgren, Mårten Wahlström
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Patent number: 11695491Abstract: Systems and methods to enable 5G system support for conveying time synchronization are provided. In some embodiments, a method performed by a wireless device for conveying external time domain information is provided. The method includes receiving a message in a first time domain used by the wireless device, the message comprising external time domain information; determining information about a second time domain based on the external time domain information; and conveying information about the second time domain to another node. In some embodiments, timing information is included into a GPRS Tunneling Protocol (GTP) payload, and the wireless device can get timing information directly from the data payload. This minimizes the RAN and/or gNB impact and adds the potential for multiple time domain support.Type: GrantFiled: June 15, 2022Date of Patent: July 4, 2023Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Kun Wang, John Walter Diachina, Anders Höglund, Dinand Roeland, Stefano Ruffini, Magnus Sandgren, Mårten Wahlström
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Patent number: 11627538Abstract: A method performed by a system of a wireless communication network is disclosed. The method relates to provisioning of a time-sensitive service related to a wireless device. The wireless communication network comprises a plurality of antenna reference points, ARPs, of one or more radio access network nodes of the wireless communication network. The method comprises obtaining information that a first ARP and a second ARP of the plurality of ARPs are to provide the time-sensitive service to the wireless device, determining, by inter-ARP radio signalling between ARPs of one or more pairs of the plurality of ARPs, one of the one or more pairs including the first ARP and one of the one or more pairs including the second ARP, a relative timing error between the first ARP and the second ARP, and taking the determined relative timing error into consideration when providing the service to the wireless device.Type: GrantFiled: July 2, 2018Date of Patent: April 11, 2023Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Garry Irvine, Alexandra Mikaelsson, Magnus Sandgren, Mårten Wahlström, Mikael Johansson, Ohan Khodaverdian, Stefano Ruffini
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Publication number: 20220369260Abstract: According to certain embodiments, a method in a network node for delivering a time synchronization service comprises obtaining a timing accuracy threshold for a time synchronization service provided to a wireless device; determining, based on a first timing accuracy error at the network node and a second timing accuracy error between the network node and the wireless device, that a timing accuracy of the time synchronization service is equal or superior to the timing accuracy threshold, and transmitting the time synchronization service to the wireless device with a timing accuracy equal or superior to the timing accuracy threshold. The method further comprises, in response to determining that the timing accuracy of the time synchronization service is inferior to the timing accuracy threshold, reconfiguring the network node to improve the timing accuracy of the time synchronization service.Type: ApplicationFiled: July 28, 2022Publication date: November 17, 2022Inventors: Angelo CENTONZA, Stefano RUFFINI, Joachim SACHS, Magnus SANDGREN, Mårten WAHLSTRÖM
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Publication number: 20220311533Abstract: Systems and methods to enable 5G system support for conveying time synchronization are provided. In some embodiments, a method performed by a wireless device for conveying external time domain information is provided. The method includes receiving a message in a first time domain used by the wireless device, the message comprising external time domain information; determining information about a second time domain based on the external time domain information; and conveying information about the second time domain to another node. In some embodiments, timing information is included into a GPRS Tunneling Protocol (GTP) payload, and the wireless device can get timing information directly from the data payload. This minimizes the RAN and/or gNB impact and adds the potential for multiple time domain support.Type: ApplicationFiled: June 15, 2022Publication date: September 29, 2022Inventors: Kun Wang, John Walter Diachina, Anders Höglund, Dinand Roeland, Stefano Ruffini, Magnus Sandgren, Mårten Wahlström
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Patent number: 11412470Abstract: According to certain embodiments, a method in a network node for delivering a time synchronization service comprises obtaining a timing accuracy threshold for a time synchronization service provided to a wireless device; determining, based on a first timing accuracy error at the network node and a second timing accuracy error between the network node and the wireless device, that a timing accuracy of the time synchronization service is equal or superior to the timing accuracy threshold, and transmitting the time synchronization service to the wireless device with a timing accuracy equal or superior to the timing accuracy threshold. The method further comprises, in response to determining that the timing accuracy of the time synchronization service is inferior to the timing accuracy threshold, reconfiguring the network node to improve the timing accuracy of the time synchronization service.Type: GrantFiled: February 15, 2019Date of Patent: August 9, 2022Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Angelo Centonza, Stefano Ruffini, Joachim Sachs, Magnus Sandgren, Mårten Wahlström
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Patent number: 11405122Abstract: Systems and methods to enable 5G system support for conveying time synchronization are provided. In some embodiments, a method performed by a wireless device for conveying external time domain information is provided. The method includes receiving a message in a first time domain used by the wireless device, the message comprising external time domain information; determining information about a second time domain based on the external time domain information; and conveying information about the second time domain to another node. In some embodiments, timing information is included into a GPRS Tunneling Protocol (GTP) payload, and the wireless device can get timing information directly from the data payload. This minimizes the RAN and/or gNB impact and adds the potential for multiple time domain support.Type: GrantFiled: November 19, 2019Date of Patent: August 2, 2022Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Kun Wang, John Walter Diachina, Anders Höglund, Dinand Roeland, Stefano Ruffini, Magnus Sandgren, Mårten Wahlström
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Publication number: 20220141786Abstract: Embodiments herein may relate to a method performed by a transmitting device, for handling communication in a wireless communications network. The transmitting device transmits a Precision Time Protocol, PTP, message carrying synchronization information to a receiving device over a radio interface.Type: ApplicationFiled: January 30, 2020Publication date: May 5, 2022Inventors: Stefano Ruffini, Magnus Sandgren, Robert Baldemair, Anders Höglund, Mårten Wahlström
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Publication number: 20210359778Abstract: Systems and methods to enable 5G system support for conveying time synchronization are provided. In some embodiments, a method performed by a wireless device for conveying external time domain information is provided. The method includes receiving a message in a first time domain used by the wireless device, the message comprising external time domain information; determining information about a second time domain based on the external time domain information; and conveying information about the second time domain to another node. In some embodiments, timing information is included into a GPRS Tunneling Protocol (GTP) payload, and the wireless device can get timing information directly from the data payload. This minimizes the RAN and/or gNB impact and adds the potential for multiple time domain support.Type: ApplicationFiled: November 19, 2019Publication date: November 18, 2021Inventors: Kun Wang, John Walter Diachina, Anders Höglund, Dinand Roeland, Stefano Ruffini, Magnus Sandgren, Mårten Wahlström
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Publication number: 20210297965Abstract: A method performed by a system of a wireless communication network is disclosed. The method relates to provisioning of a time-sensitive service related to a wireless device. The wireless communication network comprises a plurality of antenna reference points, ARPs, of one or more radio access network nodes of the wireless communication network. The method comprises obtaining information that a first ARP and a second ARP of the plurality of ARPs are to provide the time-sensitive service to the wireless device, determining, by inter-ARP radio signalling between ARPs of one or more pairs of the plurality of ARPs, one of the one or more pairs including the first ARP and one of the one or more pairs including the second ARP, a relative timing error between the first ARP and the second ARP, and taking the determined relative timing error into consideration when providing the service to the wireless device.Type: ApplicationFiled: July 2, 2018Publication date: September 23, 2021Inventors: Garry Irvine, Alexandra Mikaelsson, Magnus Sandgren, Mårten Wahlström, Mikael Johansson, Ohan Khodaverdian, Stefano Ruffini
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Patent number: 10893493Abstract: In a radio communications network using a TDD structure to communicate with UE terminals, a radio network node applies such a TDD structure that at least one guard period is included in each slot between a downlink transmission period containing at least one downlink symbol and an uplink reception period containing at least one uplink symbol. Each guard period represents an interval during which the radio network node does not transmit any data. The radio network node allocates the guard periods dynamically by checking whether at synchronization degradation criterion is fulfilled; and if at least one of the at least one synchronization degradation criterion is fulfilled, the radio network node increases the guard period to have an extended duration relative to a previous duration.Type: GrantFiled: January 16, 2017Date of Patent: January 12, 2021Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Magnus Sandgren, Robert Baldemair, Anders Höglund, Mårten Wahlström
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Publication number: 20200413360Abstract: A group of radio network nodes (14) performs automatic synchronization source selection using Radio-interface Based Synchronization, based on the exchange of clock-attribute information between respective nodes (14) via inter-node connections. Access to the clock-attribute information for other nodes (14) in the same domain or subdomain allows a given node (14) to select the best or most preferred synchronization source for use in synchronizing its own clock (44), based on a combined or joint evaluation of parameters or metrics that include the reception quality of OTA signals from respective ones of the candidate nodes (14) and the corresponding clock-attribute information. Further parameters or metrics may be evaluated in the selection, such as neighbor-relation considerations. The combined use of OTA synchronization signaling and clock-attribute information exchanges, e.g.Type: ApplicationFiled: February 28, 2019Publication date: December 31, 2020Inventors: Stefano Ruffini, Garry Irvine, Ohan Khodaverdian, Magnus Sandgren, Mårten Wahlström
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Publication number: 20200404605Abstract: According to certain embodiments, a method in a network node for delivering a time synchronization service comprises obtaining a timing accuracy threshold for a time synchronization service provided to a wireless device; determining, based on a first timing accuracy error at the network node and a second timing accuracy error between the network node and the wireless device, that a timing accuracy of the time synchronization service is equal or superior to the timing accuracy threshold, and transmitting the time synchronization service to the wireless device with a timing accuracy equal or superior to the timing accuracy threshold. The method further comprises, in response to determining that the timing accuracy of the time synchronization service is inferior to the timing accuracy threshold, reconfiguring the network node to improve the timing accuracy of the time synchronization service.Type: ApplicationFiled: February 15, 2019Publication date: December 24, 2020Inventors: Angelo CENTONZA, Stefano RUFFINI, Joachim SACHS, Magnus SANDGREN, Mårten WAHLSTRÖM
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Publication number: 20200259896Abstract: Techniques for enhancing performance in Industrial Internet-of-Things (IIoT) scenarios, including techniques for time-sensitive networking (TSN) and 5G wireless network integration. An example method, performed by a wireless device, comprises receiving system information (SI) from a radio base station (RBS) of a radio access network (RAN), the SI being indicative of support for TSN through the RBS, and establishing at least one TSN stream with an external data network, through the RBS. The example method further includes receiving a first timing signal from the wireless communications network, via the RBS, receiving a second timing signal from the external TSN data network to which the wireless device is connected, comparing the first timing signal to the second timing signal to determine an offset, and transmitting the offset to the wireless communications network.Type: ApplicationFiled: February 13, 2019Publication date: August 13, 2020Inventors: Joachim Sachs, Abdulrahman Alabbasi, Mattias Andersson, Niklas Andgart, Ola Angelsmark, José Araújo, Muhammad Ikram Ashraf, Kumar Balachandran, Robert Baldemair, Rodrigo Berg, Yufei Blankenship, Fedor Chernogorov, John Walter Diachina, Torsten Dudda, Henrik Enbuske, Sorour Falahati, János Farkas, Jonas Fröberg Olsson, Majid Gerami, Harald Gustafsson, Kimmo Hiltunen, Andreas Höglund, Torgny Holmberg, Zsolt Kenesi, András Kern, Kittipong Kittichokechai, Anna Larmo, Johan Lundsjö, György Miklós, Hubertus Munz, Gabor Nemeth, Johannes Nygren, Johan Olsson, Alexandros Palaios, Dhruvin Patel, Joakim Persson, Per Persson, Jose Luis Pradas, Sándor Rácz, Pradeepa Ramachandra, Norbert Reider, Dinand Roeland, Stefano Ruffini, Patrik Salmela, Sara Sandberg, Magnus Sandgren, Paul Schliwa-Bertling, Alexey Shapin, Nianshan Shi, Bikramjit Singh, Per Skarin, Bernard Smeets, Ying Sun, Dennis Sundman, Fredrik Svensson, Malgorzata Svensson, Geza Szabo, Wolfgang Tonutti, Balázs Varga, Mårten Wahlström, Kun Wang, Yi-Pin Eric Wang, Osman Nuri Can Yilmaz, Zhenhua Zou, Miguel Lopez
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Publication number: 20190357157Abstract: In a radio communications network using a TDD structure to communicate with UE terminals, a radio network node applies such a TDD structure that at least one guard period is included in each slot between a downlink transmission period containing at least one downlink symbol and an uplink reception period containing at least one uplink symbol. Each guard period represents an interval during which the radio network node does not transmit any data. The radio network node allocates the guard periods dynamically by checking whether at synchronization degradation criterion is fulfilled; and if at least one of the at least one synchronization degradation criterion is fulfilled, the radio network node increases the guard period to have an extended duration relative to a previous duration.Type: ApplicationFiled: January 16, 2017Publication date: November 21, 2019Inventors: Magnus SANDGREN, Robert BALDEMAIR, Anders HÖGLUND, Mårten WAHLSTRÖM
