Patents by Inventor Roland Carlsson
Roland Carlsson 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: 12273166Abstract: A method for reducing peak-to-average power ratio, PAPR, in a Multiple Input Multiple Output, MIMO, communication system is disclosed. The method is performed in a precoder unit and includes: confining, by a differentiable cost function, power of a MIMO signal to be between a lower threshold, Plow, and an upper threshold, Pup, and applying a gradient method on the differentiable cost function until reaching a set power target for the MIMO signal, while keeping an Error Vector Magnitude, EVM, below a set EVM level.Type: GrantFiled: April 7, 2021Date of Patent: April 8, 2025Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Milad Fozooni, Ulf Gustavsson, Roland Carlsson, Aare Mällo
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Patent number: 12273224Abstract: A method of controlling peak-to-average power ratio (PAPR) reduction for a multi-antenna transmitter using OFDM is disclosed. Similar to tone injection, a Peak reduction signal is added to the subcarriers for suppressing peaks of the transmitted signal. However different schemes summarized on FIG. 2 are proposed for such a superimposition of a peak reduction signal. Subcarriers carrying reference signals (DMRS) might not carry any peak reduction signal (FIG. 2b) or at a lower power than data subcarriers (FIG. 2c). Furthermore data subcarriers may be zeroed out to carry the peak reduction signal (resulting in tone insertion, FIG. 2d) or the modulation order of the data subcarriers might be reduced to increase the power of the peak reduction signal.Type: GrantFiled: March 31, 2021Date of Patent: April 8, 2025Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Roland Carlsson, Aare Mällo
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Publication number: 20240364570Abstract: A method of controlling peak-to-average power ratio (PAPR) reduction for a multi-antenna transmitter using OFDM is disclosed. Similar to tone injection, a Peak reduction signal is added to the subcarriers for suppressing peaks of the transmitted signal. However different schemes summarized on FIG. 2 are proposed for such a superimposition of a peak reduction signal. Subcarriers carrying reference signals (DMRS) might not carry any peak reduction signal (FIG. 2b) or at a lower power than data subcarriers (FIG. 2c). Furthermore data subcarriers may be zeroed out to carry the peak reduction signal (resulting in tone insertion, FIG. 2d) or the modulation order of the data subcarriers might be reduced to increase the power of the peak reduction signal.Type: ApplicationFiled: March 31, 2021Publication date: October 31, 2024Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Roland Carlsson, Aare Mällo
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Publication number: 20240187054Abstract: A method for reducing peak-to-average power ratio, PAPR, in a Multiple Input Multiple Output, MIMO, communication system is disclosed. The method is performed in a precoder unit and includes: confining, by a differentiable cost function, power of a MIMO signal to be between a lower threshold, Plow, and an upper threshold, Pup, and applying a gradient method on the differentiable cost function until reaching a set power target for the MIMO signal, while keeping an Error Vector Magnitude, EVM, below a set EVM level.Type: ApplicationFiled: April 7, 2021Publication date: June 6, 2024Inventors: Milad FOZOONI, Ulf GUSTAVSSON, Roland CARLSSON, Aare MÄLLO
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Patent number: 10506562Abstract: There is provided configuration of a communications link. The configuration involves wirelessly receiving control signalling from a user equipment by a network node functional unit. The control signalling relates to an uplink communications resource between the user equipment and the network node functional unit. The configuration further involves notifying, in response to receiving the control signalling and prior to receiving any user data associated with the control signalling from the user equipment on the uplink communications resource, a backhaul client functional unit to configure a communications link to a backhaul hub.Type: GrantFiled: April 29, 2013Date of Patent: December 10, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Anders Persson, Roland Carlsson, Henrik Sahlin
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Patent number: 10362584Abstract: A method performed by a transmitting station for assisting a receiving station in mitigating effects of a narrowband interference affecting the receiving station in a wireless communications network. The transmitting station determines (503) a likelihood of presence of the narrowband interference. When the likelihood of presence of the narrowband interference exceeds a threshold of the likelihood, the transmitting station sends (505) to the receiving station a recommendation to avoid smoothing of the channel estimates of the receiving station. The recommendation indicates a high likelihood of presence of the narrowband interference.Type: GrantFiled: February 6, 2015Date of Patent: July 23, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Miguel Lopez, Roland Carlsson, Henrik Sahlin
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Publication number: 20180020458Abstract: A method performed by a transmitting station for assisting a receiving station in mitigating effects of a narrowband interference affecting the receiving station in a wireless communications network. The transmitting station determines (503) a likelihood of presence of the narrowband interference. When the likelihood of presence of the narrowband interference exceeds a threshold of the likelihood, the transmitting station sends (505) to the receiving station a recommendation to avoid smoothing of the channel estimates of the receiving station. The recommendation indicates a high likelihood of presence of the narrowband interference.Type: ApplicationFiled: February 6, 2015Publication date: January 18, 2018Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Miguel LOPEZ, Roland CARLSSON, Henrik SAHLIN
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Patent number: 9803013Abstract: The invention provides binding molecules, including antibody molecules which selectively bind to a cell surface antigen of a target cell, and wherein the binding molecules, on binding the cell surface antigen, induce cell death of the target cell. There is also provided methods of and pharmaceutical compositions for cell death induction and uses thereof.Type: GrantFiled: April 11, 2014Date of Patent: October 31, 2017Assignee: BioInvent International ABInventors: Björn Frendéus, Roland Carlsson, Ingrid Teige, Linda Mårtensson
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Patent number: 9549417Abstract: The present invention relates to method and arrangement in cellular mobile communication systems, in particular for handling of a physical random access channel for example in a Long Term Evolution communication network. By sending to at least one user equipment, UE, in a communication network cell an un-solicited speculative random access response, RAR, message comprising information relating to at least one of pre-amble identifier, allocated UE identifier, and uplink resource allocation data for L2/L3 message, it is possible to reduce the complexity of the access node, e.g. an eNodeB.Type: GrantFiled: June 21, 2012Date of Patent: January 17, 2017Assignee: TELEFONAKTIEBOLAGET L M ERICSSONInventors: Thomas Olsson, Peter Brauer, Anders Carlsson, Roland Carlsson, David Engdal, Henrik Sahlin, Jim Svensson
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Patent number: 9113360Abstract: A method (200) for a transceiver in a mobile system for determining the SINR for signals from at least two User Equipments during a future time interval, comprising arranging the transceiver to receive (205) transmissions from User Equipments in the mobile system on one radio channel per User Equipment, choosing (210) the at least two User Equipments from User Equipments which have data to transmit to the transceiver. The method comprises determining (220) the radio channel characteristics during the future time interval for the at least two User Equipments, emulating (230) at least one receiver type available to the transceiver during said future time interval in order to determine a post demodulation channel for the at least two User Equipments, in which emulation the determined radio channel characteristics, and determining (235) an SINR in the transceiver for the at least two User Equipments using the post demodulation channel.Type: GrantFiled: June 16, 2010Date of Patent: August 18, 2015Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Henrik Sahlin, Roland Carlsson, Aare Mallo
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Publication number: 20150124734Abstract: The present invention relates to method and arrangement in cellular mobile communication systems, in particular for handling of a physical random access channel for example in a Long Term Evolution communication network. By sending to at least one user equipment, UE, in a communication network cell an un-solicited speculative random access response, RAR, message comprising information relating to at least one of pre-amble identifier, allocated UE identifier, and uplink resource allocation data for L2/L3 message, it is possible to reduce the complexity of the access node, e.g. an eNodeB.Type: ApplicationFiled: June 21, 2012Publication date: May 7, 2015Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Thomas Olsson, Peter Brauer, Anders Carlsson, Roland Carlsson, David Engdal, Henrik Sahlin, Jim Svensson
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Patent number: 8964545Abstract: The invention relates to communication between mobile nodes and/or node arrangements in wireless communication networks. In particular, the invention relates to a method in a radio access arrangement for improving the balance between the capacity allocated to initial access for network entry and the capacity allocated to payloads in the radio access arrangement. The radio access arrangement is configured to operatively communicate with a plurality of mobile nodes via an air interface. First, an initial access capacity is set to a value (S2), and then a current initial access load is obtained (S3). The next step is to increase (S7) the initial access capacity provided by the radio access arrangement (212, 312) if the current initial access load exceeds a predetermined upper limit (S4).Type: GrantFiled: February 16, 2009Date of Patent: February 24, 2015Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Magnus Johansson, Roland Carlsson
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Publication number: 20140321318Abstract: There is provided configuration of a communications link. The configuration involves wirelessly receiving control signalling from a user equipment by a network node functional unit. The control signalling relates to an uplink communications resource between the user equipment and the network node functional unit. The configuration further involves notifying, in response to receiving the control signalling and prior to receiving any user data associated with the control signalling from the user equipment on the uplink communications resource, a backhaul client functional unit to configure a communications link to a backhaul hub.Type: ApplicationFiled: April 29, 2013Publication date: October 30, 2014Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Anders Persson, Roland Carlsson, Henrik Sahlin
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Publication number: 20140314793Abstract: The invention provides binding molecules, including antibody molecules which selectively bind to a cell surface antigen of a target cell, and wherein the binding molecules, on binding the cell surface antigen, induce cell death of the target cell. There is also provided methods of and pharmaceutical compositions for cell death induction and uses thereof.Type: ApplicationFiled: April 11, 2014Publication date: October 23, 2014Applicant: BIOINVENT INTERNATIONAL ABInventors: Björn Frendéus, Roland Carlsson, Ingrid Teige, Linda Mårtensson
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Patent number: 8638721Abstract: Methods and devices for coding a slot in a cellular radio system are described. The coding allows for increased robustness and can be designed to be backwards compatible with transmission for e.g. GSM, GPRS, EGPRS and EGPRS2.Type: GrantFiled: January 26, 2011Date of Patent: January 28, 2014Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Peter Brauer, Roland Carlsson, Olof Liberg, Miguel Lopez, Henrik Sahlin, Mårten Sundberg
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Patent number: 8488485Abstract: An intermediary node is adapted for receiving a sequence of packets from a server, wherein the intermediary node comprises a time estimator adapted for performing the following steps—resolving the sequence number (k) and time of arrival to the intermediary node for at least a plurality (q) of incoming packets; establishing the frame period of the incoming packets (T); establishing a sequence of normalized packet arrival times (ek) as corresponding to the established frame period (T); calculating the relative arrival time (rtrec, k) of the plurality (q) of incoming packets in relation to the normalized packet arrival times; creating a cumulative density function (CDF) for a given sequence of packets; and establishing the threshold value for the relative arrival time (rtPL) yielding the predefined packet loss (PL) based on the cumulative density function (CDF).Type: GrantFiled: May 23, 2008Date of Patent: July 16, 2013Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Roland Carlsson, Aare Mällo
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Publication number: 20130088950Abstract: A method (200) for a transceiver in a mobile system for determining the SINR for signals from at least two User Equipments during a future time interval, comprising arranging the transceiver to receive (205) transmissions from User Equipments in the mobile system on one radio channel per User Equipment, choosing (210) the at least two User Equipments from User Equipments which have data to transmit to the transceiver. The method comprises determining (220) the radio channel characteristics during the future time interval for the at least two User Equipments,emulating (230) at least one receiver type available to the transceiver during said future time interval in order to determine a post demodulation channel for the at least two User Equipments, in which emulation the determined radio channel characteristics,and determining (235) an SINR in the transceiver for the at least two User Equipments using the post demodulation channel.Type: ApplicationFiled: June 16, 2010Publication date: April 11, 2013Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Henrik Sahlin, Roland Carlsson, Aare Mallo
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Patent number: 8238361Abstract: The invention relates to a scheduler for a TCP/IP based data communication system and a method for the scheduler. The communication system comprises a TCP/IP transmitter and a receiving unit (UE). The scheduler is associated with a Node comprising a rate measuring device for measuring a TCP/IP data rate from the TCP/IP transmitter and a queue buffer device for buffering data segments from the TCP/IP transmitter. The scheduler is arranged to receive information from the rate measuring device regarding the TCP/IP data rate and is arranged to adapt the permitted queue latency to a minimum value when the TCP/IP transmitter is in a slow start mode and to increase the permitted queue latency when the TCP/IP rate has reached a threshold value.Type: GrantFiled: December 18, 2006Date of Patent: August 7, 2012Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventor: Roland Carlsson
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Patent number: 8179866Abstract: A cell plan operation, a Routine and a base station are disclosed wherein user entities are allocated to at least two carriers (C1; C2) in at least one cell (A; B) of a system (node B), the first carrier (C1) having at least a first channel (DPCH), the second carrier (C2) having at least a second channel (DPCH), the at least two carriers not causing interference to one another, wherein user entities (UE) may be selectively assigned to either first channel and/or the second channel. Information is gathered on respective measures relating to the noise enduring capability (MAX ROT(UEn)) of respective prevalent users within the at least one cell. Prevalent user entities are ordered according to their respective noise enduring capabilities (MAX_ROT(UEn)_UE). User entities with low noise enduring capabilities are allocated to a channel on the first carrier (C1), while user entities with high noise enduring capabilities (MAX_ROT(UEn)) are allocated to a channel on the second carrier (C2).Type: GrantFiled: October 3, 2005Date of Patent: May 15, 2012Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventor: Roland Carlsson
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Publication number: 20120077710Abstract: The present invention relates to a method for in vivo molecular evolution of antibody function. According to the present invention, a nucleic acid encoding a CDR that is normally contained in a framework (the “original framework”), which differs from a selected master framework, is amplified from an immunoglobulin gene and is inserted into a nucleic acid encoding the selected master framework. The invention further provides an antibody library, such as a phage display library, and methods of making the same.Type: ApplicationFiled: May 16, 2011Publication date: March 29, 2012Applicant: BIOINVENT INTERNATIONAL ABInventors: Mats Ohlin, Eskil Soderlind, Roland Carlsson