Patents by Inventor Magnus ?ström
Magnus ?ström 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: 11071077Abstract: A network sync signal with unknown frequency location is detected by sampling the received signal over a band of interest in frequency, and over the repetition period of the sync signal in time. The signal is converted to the frequency domain. Sub-bands of the frequency-domain signal, corresponding to different possible sync locations and frequency offsets, are extracted and converted to the time domain, where the sync signal is searched over the reception window length using time-domain matched filtering.Type: GrantFiled: December 19, 2019Date of Patent: July 20, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Magnus Åström, Fredrik Nordström, Andres Reial
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Patent number: 11044782Abstract: The present disclosure relates to a wireless device and a method, for use in a wireless device, for controlling discontinuous reception, DRX, during idle mode. The method comprises selecting (S31) a default DRX cycle pattern for controlling operative instants during a DRX cycle and receiving (S32) from an access node, a first set of beams in the operative instants of the default DRX cycle pattern. The method further comprises determining (S33) reception quality metrics for respective beams and determining (S34), based on the reception quality metrics, a customized DRX cycle pattern for controlling operative instants during a subsequent DRX cycle. The customized DRX cycle pattern is applied (S35) in the subsequent DRX cycle to receive a second set of beams.Type: GrantFiled: January 4, 2017Date of Patent: June 22, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Andres Reial, Magnus Åström, Bengt Lindoff
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Patent number: 11016526Abstract: An integrated circuit (10, 10a-d) is disclosed, which is configured to be connected to an antenna module (3) having multiple antenna elements (17). The integrated circuit (10, 10a-d) comprises a plurality of communications circuits (50j), each of which is configured to be connected to an antenna element (17) of the antenna module (3). It also comprises a first clock input terminal (551) configured to receive a reference clock signal from outside the integrated circuit (10, 10a-d) and a first clock-distribution network (601) connected between the first clock input terminal (551) and a first subset (651) of the communication circuits (50j). Furthermore, it comprises a second clock input terminal (552) configured to receive a reference clock signal from outside the integrated circuit (10, 10a-d) and a second clock-distribution network (601) connected between the second clock input terminal (552) and a second subset (652) of the communication circuits (50j).Type: GrantFiled: August 4, 2020Date of Patent: May 25, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Christian Elgaard, Magnus Åström, Fredrik Tillman
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Patent number: 10959258Abstract: A transmission allocation method is disclosed for a network node of a wireless communication system configured to communicate using an Orthogonal Frequency Division Multiplexing (OFDM) signal comprising sub-carriers in a frequency domain and a symbols in a time domain. The network node is associated with a network node bandwidth comprising a network node direct current (DC) sub-carrier. The network node is configured to communicate with a wireless communication device (WCD) associated with a WCD bandwidth comprising a WCD DC sub-carrier which is different from the network node DC sub-carrier. The method comprises acquiring, in relation to an upcoming communication between the network node and the WCD, at least one of an indication of a receiver DC frequency and an indication of a transmitter DC frequency, determining a transmission allocation for the upcoming communication based on the acquired indication(s), and performing communication based on the transmission allocation.Type: GrantFiled: June 22, 2017Date of Patent: March 23, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Magnus Åström, Andres Reial, Robert Baldemair
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Patent number: 10863565Abstract: A wireless communication device (140) and method therein for managing connection states in a wireless communication system (100) are disclosed. The wireless communication device (140) comprises at least two Subscriber Identity Modules, SIMs, in which a first SIM is associated to a first original connection state towards a first network node (111), a second SIM is associated to a second original connection state towards a second network node (121). The wireless communication device (140) obtains a position of the wireless communication device (140) and determines a priority list for the at least two SIMs based on the obtained position. The wireless communication device (140) further determines whether the respective connection states of the first and second SIMs have conflicting needs in radio resources.Type: GrantFiled: June 28, 2016Date of Patent: December 8, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Bengt Lindoff, Magnus Åström, Joakim Axmon
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Patent number: 10856165Abstract: A communication device is arranged to operate in a cellular communication system and report Channel State Information, CSI, including a channel quality by a Channel Quality Indicator, CQI, which reports a CQI set. The communication device comprises a receiver arranged to receive antenna-specific reference signals, a channel estimator arranged to evaluate channel conditions from the reference signals to determine values of a CQI set, a reporting processor arranged to determine whether a bounded differential reporting format prevents values of the CQI set to be accurately reported, and to determine a CQI set such that the bounded differential reporting format allows the values of the CQI set to be reported to reduce under-reporting or over-reporting errors that arise from the use of the bounded differential reporting format, and to form a CSI report including the values of the CQI set using the bounded differential reporting format, and a transmitter arranged to send the CSI report.Type: GrantFiled: December 5, 2016Date of Patent: December 1, 2020Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Magnus Åström, Maomao Chen, Fredrik Nordström, Torgny Palenius
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Patent number: 10813014Abstract: A radio network device, having a narrowband receiver and operative in a wireless communication network, exploits the periodicity of transmission of network sync signals by iteratively receiving a plurality of frequency-offset portions of the sync signal, and then assembling the portions to recreate the entire sync signal. The recreated sync signal is then processed to attempt network detection and synchronization. In some embodiments, frequency/time compensation may be applied to the received and stored sync signal portions, prior to their combination, to compensate for uncertainty in the frequency drift (and time drift due to frequency error) of the sync signal location.Type: GrantFiled: March 5, 2018Date of Patent: October 20, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Magnus Åström, Bengt Lindoff
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Patent number: 10784902Abstract: Systems and methods are disclosed herein that relate to a wireless device that intelligently uses different reference crystal oscillators (XOs) for a PhaseLocked Loop(s) (PLL(s)) in a transceiver of the wireless device. Embodiments of a method of operation of a wireless device comprising a first XO that operates at a first reference frequency and a second XO that operates at a second reference frequency that is greater than the first reference frequency are disclosed. In some embodiments, the method of operation of the wireless devices comprises making a decision as to whether to configure a receiver of the wireless device to use the first XO or the second XO and configuring the receiver of the wireless device to use the first XO or the second XO in accordance with the decision.Type: GrantFiled: December 19, 2016Date of Patent: September 22, 2020Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Bengt Lindoff, Magnus Åström, Lars Sundström
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Patent number: 10775835Abstract: An integrated circuit (10, 10a-d) is disclosed, which is configured to be connected to an antenna module (3) having multiple antenna elements (17). The integrated circuit (10, 10a-d) comprises a plurality of communications circuits (50j), each of which is configured to be connected to an antenna element (17) of the antenna module (3). It also comprises a first clock input terminal (551) configured to receive a reference clock signal from outside the integrated circuit (10, 10a-d) and a first clock-distribution network (601) connected between the first clock input terminal (551) and a first subset (651) of the communication circuits (50j). Furthermore, it comprises a second clock input terminal (552) configured to receive a reference clock signal from outside the integrated circuit (10, 10a-d) and a second clock-distribution network (601) connected between the second clock input terminal (552) and a second subset (652) of the communication circuits (50j).Type: GrantFiled: August 11, 2017Date of Patent: September 15, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Christian Elgaard, Magnus Åström, Fredrik Tillman
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Patent number: 10663556Abstract: A method performed in a server node associated with a cellular communication system is disclosed. The method is for validation of a first position indication of a wireless communication device, wherein the wireless communication device is adapted to operate in connection with the cellular communication system. The first position indication is obtained via the wireless communication device by a first positioning system. The method comprises obtaining a serving cell identification of the wireless communication device, obtaining a second position indication of the wireless communication device based on the serving cell identification, and determining whether the first position indication is valid based on whether a metric based on the first and second position indications meets a validation criterion.Type: GrantFiled: September 28, 2016Date of Patent: May 26, 2020Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Bengt Lindoff, Lars Andersson, Magnus Åström, Patrik Ekdahl, Fredrik Nordström, Andres Reial
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Patent number: 10652856Abstract: Systems and methods for transmitting and receiving other broadcast information, OBI, are disclosed. In some embodiments, a method of operation of wireless communication device for a wireless communication system comprises receiving and decoding a transmission unit in which OBI is collocated with at least a portion of a Synchronization Signal Block (SSB). The SSB comprises a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH). The OBI comprises paging messages, remaining minimum system information (RMSI), and/or random access response (RAR) messages. In some embodiments, the transmission unit is a transmission unit having a duration that is two or more symbols but less than a duration of a full slot. In this manner, resources of the wireless communication system are efficiently utilized, which results in higher link and system capacity as well as lower network power consumption from increased stand-by times.Type: GrantFiled: June 13, 2018Date of Patent: May 12, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Magnus Åström, Robert Baldemair, Pål Frenger, Fredrik Ovesjö
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Patent number: 10623161Abstract: A method of operation of a network node in a wireless communications network comprises determining a set of sync signal features for a sync signal to be transmitted by either the network node or another network node. The method further comprises determining a sync frequency location for the sync signal based on the set of sync signal features for the sync signal to be transmitted and transmitting or causing transmission of the sync signal on the sync frequency location. A method of a wireless communication device for performing synchronization to a wireless communications network comprises determining a set of sync signal features for a sync signal to be searched for by the wireless communication device and determining a set of sync frequency locations defined for the set of sync signal features for a cellular band and searching for a sync signal in the set of sync frequency locations.Type: GrantFiled: November 10, 2017Date of Patent: April 14, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Magnus Åström, Pål Frenger
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Patent number: 10594598Abstract: A relay node in a mesh network receives a plurality of broadcasted path request (PREQ) messages. The relay node updates cluster information in a cluster table of the relay node based on the received PREQ messages. This cluster information identifies a cluster transmitter node and a list of cluster receiver nodes that describes a path from the cluster transmitter node to the relay node via the cluster receiver nodes. The relay node receives a Path Reply (PREP) message, and in response, transmits a modified PREP message created based on the received PREP message.Type: GrantFiled: October 18, 2017Date of Patent: March 17, 2020Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Magnus Åström, Rocco Di Taranto, Dzevdan Kapetanovic
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Patent number: 10536870Abstract: The disclosure provides a method (90) performed in a network node (2) for handling simultaneous measurement signaling and data communication with a communications device (3). The method (90) comprises transmitting (91) data to the communication device (3) using a transmission mode corresponding to the communication device (3) using a first number of reception elements (123, 125); establishing (92) a need for the communication device (3) to perform measurements and a capability of the communication device (3) for receiving measurement signaling using a second number of reception elements (123, 125) while receiving data using a reduced number of reception elements (123, 125); sending (93), to the communication device (3), a request to initialize the measurements, the request comprising a measurement configuration; and transmitting (94) the data using a transmission mode corresponding to the communication device (3) using the reduced number of reception elements (123, 125) for the data.Type: GrantFiled: June 23, 2015Date of Patent: January 14, 2020Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Joakim Axmon, Magnus Åström
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Patent number: 10517053Abstract: A network sync signal with unknown frequency location is detected by sampling the received signal over a band of interest in frequency, and over the repetition period of the sync signal in time. The signal is converted to the frequency domain. Sub-bands of the frequency-domain signal, corresponding to different possible sync locations and frequency offsets, are extracted and converted to the time domain, where the sync signal is searched over the reception window length using time-domain matched filtering.Type: GrantFiled: March 15, 2018Date of Patent: December 24, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Magnus Åström, Fredrik Nordström, Andres Reial
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Patent number: 10484955Abstract: A method is disclosed for a network node configured to transmit wireless communication signals using beam forming and configured to apply any of one or more data carrying beam widths for transmission of data carrying signals dedicated to a specific wireless communication device. The method comprises determining one or more requirement parameters for transmission of synchronization signals, wherein the one or more requirement parameters comprise a desired synchronization signal beam width and a minimum effective power, and wherein the determined desired synchronization signal beam width is larger than a minimum one of the data carrying beam widths.Type: GrantFiled: October 12, 2017Date of Patent: November 19, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Magnus Åström, Andres Reial, Henrik Sahlin, Sven Petersson
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Patent number: 10448343Abstract: A transmission power management method is disclosed for a wireless communication device (WCD), wherein the WCD is configured to operate in a simultaneously connected mode in relation to a plurality of radio access technologies (RATs) served by respective network nodes. The method comprises dynamically determining a transmission power distribution for the plurality of RATs subject to a maximum transmission power constraint of the WCD and causing application of the determined transmission power distribution for the WCD. Causing application of the determined transmission power distribution may comprise transmitting a respective sounding signal towards the respective network node, wherein a respective signal level of the sounding signal is indicative of the determined transmission power distribution.Type: GrantFiled: December 15, 2017Date of Patent: October 15, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Andres Reial, Magnus Åström
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Patent number: 10448355Abstract: A technique for locating a radio device within a region covered by a radio access network, RAN is described. The RAN includes a plurality of transmission and reception points, TRPs. As to a method aspect of the technique, reports indicative of measurements performed by the radio device based on radio beams transmitted from different TRPs of the RAN are received. Each of the radio beams correspond to a radio propagation direction from the respective TRP. The radio device is located based on a combination of the radio propagation directions corresponding to radio beams transmitted from at least two of the TRPs of the RAN.Type: GrantFiled: March 6, 2018Date of Patent: October 15, 2019Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Andres Reial, Fredrik Nordström, Magnus Åström
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Patent number: 10425969Abstract: There is provided mechanisms for performing random access in a network. A method is performed by a terminal device and a method is performed by a network node. The terminal device method comprises decoding a time index from received system information. The system information is transmitted with a first symbol duration from a network node and is received by the terminal device at a first time instant. The method comprises determining a second symbol duration from the system information. The method comprises determining a second time instant, in relation to the first time instant, based on the time index, the second symbol duration, and a first receiver parameter. The method comprises transmitting a random access preamble at the second time instant.Type: GrantFiled: August 10, 2017Date of Patent: September 24, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Magnus Åström, Pål Frenger, Bengt Lindoff
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Patent number: 10412656Abstract: The proposed technology relates to path selection in wireless mesh networks. In particular the disclosure relates to methods for selection of one or more transmission paths from an originating node to a target node in a wireless mesh network, wherein there are at least two possible transmission paths between the originating node and the target node. More specifically, the disclosure proposes a method, performed in an originating node in a wireless network comprising several nodes wirelessly connected to each other, for enabling selection of a transmission path from the originating node to a target node, wherein there are at least two possible transmission paths between the originating node and the target node. The method comprises the steps of receiving SI discovery signals from nodes in the at least two possible transmission paths and estimating S2, based on the received discovery signals, radio channels H for transmission from the originating node to the nodes transmitting the discovery signals.Type: GrantFiled: June 22, 2015Date of Patent: September 10, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Magnus Åström, Bengt Lindoff