Patents by Inventor Klas Sjerling
Klas Sjerling 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: 9820159Abstract: Disclosed are methods as well as wireless devices and radio network nodes for radio resource management (RRM) in inter-operator time-sharing of a frequency spectrum Fs. In one example embodiment, the same frequency spectrum Fs is allocated to each of a plurality of operators during different time periods such that the same frequency spectrum is shared among all of the plurality of operators.Type: GrantFiled: June 3, 2013Date of Patent: November 14, 2017Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Farshid Ghasemzadeh, Muhammad Kazmi, Klas Sjerling
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Patent number: 9722761Abstract: Systems and methods relating to configuring a Secondary Component Carrier (SCC) for a wireless device in a cellular communications network are disclosed. In some embodiments, the method comprises obtaining capabilities of the wireless device, where the capabilities indicate a frequency band combination supported by the wireless device. The frequency band combination supported by the wireless device includes a first frequency band supported by a base station and the wireless device used for a Primary Cell (PCell) of the wireless device and a second frequency band supported by the wireless device but not supported by the base station. The method further comprises identifying an overlap between the second frequency band supported by the wireless device but not supported by the base station and a third frequency band supported by the base station but not supported by the wireless device and configuring the SCC for the wireless device in the overlap.Type: GrantFiled: October 9, 2014Date of Patent: August 1, 2017Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Christian Bergljung, Tao Cui, Yoshio Honda, Klas Sjerling, Erika Tejedor, Toshihito Kanai
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Publication number: 20150289141Abstract: Disclosed are methods as well as wireless devices and radio network nodes for radio resource management (RRM) in inter-operator time-sharing of a frequency spectrum Fs. In one example embodiment, the same frequency spectrum Fs is allocated to each of a plurality of operators during different time periods such that the same frequency spectrum is shared among all of the plurality of operators.Type: ApplicationFiled: June 3, 2013Publication date: October 8, 2015Inventors: Farshid Ghasemzadeh, Muhammad Kazmi, Klas Sjerling
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Publication number: 20150281974Abstract: Disclosed are methods as well as apparatuses for inter-operator time-sharing of a frequency spectrum. In one example embodiment, the same frequency spectrum is allocated to each of a plurality of operators during different time periods such that the same frequency spectrum is shared among all of the plurality of operators.Type: ApplicationFiled: May 30, 2013Publication date: October 1, 2015Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Farshid Ghasemzadeh, Muhammad Kazmi, Klas Sjerling
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Publication number: 20150098425Abstract: Systems and methods relating to configuring a Secondary Component Carrier (SCC) for a wireless device in a cellular communications network are disclosed. In some embodiments, the method comprises obtaining capabilities of the wireless device, where the capabilities indicate a frequency band combination supported by the wireless device. The frequency band combination supported by the wireless device includes a first frequency band supported by a base station and the wireless device used for a Primary Cell (PCell) of the wireless device and a second frequency band supported by the wireless device but not supported by the base station. The method further comprises identifying an overlap between the second frequency band supported by the wireless device but not supported by the base station and a third frequency band supported by the base station but not supported by the wireless device and configuring the SCC for the wireless device in the overlap.Type: ApplicationFiled: October 9, 2014Publication date: April 9, 2015Inventors: Christian Bergljung, Tao Cui, Yoshio Honda, Klas Sjerling, Erika Tejedor, Toshihito Kanai
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Patent number: 8730924Abstract: The present invention relates to a method for sending reserved sub-carriers to a UE for the purpose of reducing peak to average power ratio (PAPR) of the transmitted signal to ensure sufficient quality of the modulated signal to achieve high data rate, including the steps of sending the information related to dynamic activation and deactivation of reserved sub-carriers on a common channel, which is readable for all UEs in idle and in connected mode; dynamically activating the transmission of the reserved sub-carriers in a cell when high modulation quality is to be maintained; dynamically deactivating the transmission of the reserved sub-carriers in a cell when high modulation quality is not required. The invention furthermore relates to a radio base station and a UE relating to said method.Type: GrantFiled: October 23, 2007Date of Patent: May 20, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Muhammad Kazmi, Robert Baldemair, Anders Furuskär, Klas Sjerling, Farshid Ghasemzadeh
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Patent number: 8553667Abstract: A MIMO-capable base station allocates a maximum transmission power budget to each of its antennas. For serving each of one or more MIMO and non-MIMO users, one or more carriers are allocated. For each carrier, information about an amount of allocated MIMO and non-MIMO user resources associated with the carrier is used to derive coefficients. Each coefficient corresponds to a unique one of the antennas, and represents a proportion of a maximum power budget for the carrier. For each carrier, the coefficients and the maximum transmission power budget for the carrier are used to derive a maximum transmission power budget for each of the antennas. For each antenna, a total maximum transmission power budget for the antenna is derived by combining the derived maximum transmission power budgets of the carriers transmitted on the antenna. The total maximum power budget of the antenna should not exceed a limit for the antenna.Type: GrantFiled: April 23, 2008Date of Patent: October 8, 2013Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Muhammad Kazmi, Klas Sjerling
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Patent number: 7856029Abstract: A radio base station (20) has an internal interface (26) connecting a radio equipment (RE) (24) and a radio equipment controller (REC) (22). The radio base station performs a pre-start-up procedure or method for the internal (26). The pre-start-up procedure is performed preparatory to and/or in conjunction with a start-up procedure for the internal interface. As on e of its aspects, the pre-start-up procedure involves storing one or more previously proven combinations of line bit rate and protocol as stored combination(s) for use on the internal interface. Prior to synchronization of the internal interface, the stored combination(s) are retrieved and included in a temporary available set of combinations of line bit rate and protocol. Thereafter the start-up procedure for the internal interface is initiated for the purpose of determining efficacy of the temporary available set.Type: GrantFiled: August 3, 2004Date of Patent: December 21, 2010Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Jacob Kristian Osterling, Franz Heiser, Klas Sjerling
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Publication number: 20100202431Abstract: A MIMO-capable base station allocates a maximum transmission power budget to each of its antennas. For serving each of one or more MIMO and non-MIMO users, one or more carriers are allocated. For each carrier, information about an amount of allocated MIMO and non-MIMO user resources associated with the carrier is used to derive coefficients. Each coefficient corresponds to a unique one of the antennas, and represents a proportion of a maximum power budget for the carrier. For each carrier, the coefficients and the maximum transmission power budget for the carrier are used to derive a maximum transmission power budget for each of the antennas. For each antenna, a total maximum transmission power budget for the antenna is derived by combining the derived maximum transmission power budgets of the carriers transmitted on the antenna. The total maximum power budget of the antenna should not exceed a limit for the antenna.Type: ApplicationFiled: April 23, 2008Publication date: August 12, 2010Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Muhammad Kazmi, Klas Sjerling
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Publication number: 20100118836Abstract: The present invention relates to a method for sending reserved sub-carriers to a UE for the purpose of reducing peak to average power ratio (PAPR) of the transmitted signal to ensure sufficient quality of the modulated signal to achieve high data rate, including the steps of sending the information related to dynamic activation and deactivation of reserved sub-carriers on a common channel, which is readable for all UEs in idle and in connected mode; dynamically activating the transmission of the reserved sub-carriers in a cell when high modulation quality is to be maintained; dynamically deactivating the transmission of the reserved sub-carriers in a cell when high modulation quality is not required. The invention furthermore relates to a radio base station and a UE relating to said method.Type: ApplicationFiled: October 23, 2007Publication date: May 13, 2010Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Muhammad Kazmi, Robert Baldemair, Anders Furuskär, Klas Sjerling, Farshid Ghasemzadeh
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Patent number: 7646751Abstract: An interface, apparatus, and method are described for communication between a radio equipment control (REC) node and a radio equipment (RE) node in a radio base station that tranceives information over radio interface using multiple antenna carriers. The REC node is separate from and coupled to the RE node by a transmission link. Both control information and user information are generated for transmission over the transmission link from one of the REC node and the RE node to the other. Many advantageous interface features are described.Type: GrantFiled: September 29, 2004Date of Patent: January 12, 2010Assignees: Telefonaktiebolaget LM Ericsson (publ), Siemens AGInventors: Jacob Osterling, Klas Sjerling, Franz Heiser, Armin Splett, Hans Kroner, Peter Merz, Werner Korte, Rolf Kramer, legal representative, Patrick Lagrange, Eric Georgeaux, Toshifumi Sato, Yang Ganghua, Lan Haiqing, Lin Zhibin
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Publication number: 20080225816Abstract: An interface, apparatus, and method are described for communication between a radio equipment control (REC) node and a radio equipment (RE) node in a radio base station that tranceives information over radio interface using multiple antenna carriers. The REC node is separate from and coupled to the RE node by a transmission link. Both control information and user information are generated for transmission over the transmission link from one of the REC node and the RE node to the other. Many advantageous interface features are described.Type: ApplicationFiled: September 29, 2004Publication date: September 18, 2008Inventors: Jacob Osterling, Klas Sjerling, Franz Heiser, Armin Splett, Hans Kroner, Peter Merz, Werner Korte, Patrick Lagrange, Eric Georgeaux, Toshifumi Sato, Yang Ganghua, Lan Haioing, Lin Zhibin
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Publication number: 20080147370Abstract: The present invention relates to uplink testing of a base station of a mobile communications system. Message blocks are sent each with a predefined maximum number of retransmissions from a mobile station emulator or simulator for each message block of the test without requiring one or more retransmission requests from the base station under test. The invention is well suited for a cellular mobile radio communications system, particularly a Universal Mobile Telecommunications System, UMTS.Type: ApplicationFiled: February 13, 2005Publication date: June 19, 2008Applicant: Telefonaktiebolabet LM Ericsson (publ)Inventor: Klas Sjerling
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Publication number: 20050107124Abstract: A radio base station (20) has an internal interface (26) connecting a radio equipment (RE) (24) and a radio equipment controller (REC) (22). The radio base station performs a pre-start-up procedure or method for the internal interface (26). The pre-start-up procedure is preformed preparatory to and/or in conjunction with a start-up procedure for the internal interface. As one of its aspects, the pre-start-up procedure involves storing one or more previously proven combinations of line bit rate and protocol as stored combination(s) for use on the internal interface. Prior to synchronization of the internal interface, the stored combination(s) are retrieved and included in a temporary available set of combinations of line bit rate and protocol. Thereafter the start-up procedure for the internal interface is initiated for the purpose of determining efficacy of the temporary available set.Type: ApplicationFiled: August 3, 2004Publication date: May 19, 2005Applicant: Telefonaktiebolaget LM Ericsson (publ).Inventors: Jacob Osterling, Franz Heiser, Klas Sjerling