Patents by Inventor Martin Hessler

Martin Hessler 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).

  • Publication number: 20190182008
    Abstract: A receiver apparatus receives a terminal-specific demodulation reference signal having a rank k and estimates an effective multi-layer channel response, using the received terminal-specific demodulation reference signal. The receiver demodulates first data symbols from first time-frequency resource elements, using the estimate of the effective multi-layer channel response and using a first symbols-to-virtual-antenna mapping matrix M to obtain nc modulation symbols from each of the first time-frequency resource elements, wherein nc>1 and wherein the first symbol-to-transmit-layer mapping matrix M has dimensions k by nc. The first data symbols are decoded to obtain downlink control information assigning second time-frequency resource elements to the receiver.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 13, 2019
    Inventors: Jonas Fröberg Olsson, Erik Eriksson, Pål Frenger, Martin Hessler
  • Patent number: 10320530
    Abstract: A node (100) of a wireless communication network receives a synchronization signal from a radio device (10). Based on the received synchronization signal, the node determines a time alignment configuration for uplink radio transmissions from the radio device to the wireless communication network. Based on the received synchronization signal, the node further determines Hybrid Automatic Repeat Request feedback information for at least one downlink radio transmission from the wireless communication network to the radio device (10). The node (100) indicates the determined time alignment configuration to the radio device (10). Based on the determined Hybrid Automatic Repeat Request feedback information, the node controls retransmission of the at least one downlink radio transmission.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: June 11, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Pål Frenger, Erik Eriksson, Jonas Fröberg Olsson, Martin Hessler
  • Publication number: 20190174538
    Abstract: A technique for transmitting data (504) from a first station to a second station on a contention-based radio channel is described. As to a method aspect of the technique, the first station obtains a transmit identifier (506) for the first station from a set of transmit identifiers; transmits control information (502) including the transmit identifier (506) to the second station; and transmits the data (504) to the second station according to the control information (502), wherein the data includes a station identifier (508) for the first station, the station identifier (508) or a combination of the station identifier and the transmit identifier (506) being indicative of the first station.
    Type: Application
    Filed: August 10, 2016
    Publication date: June 6, 2019
    Inventors: Pål Frenger, Erik Eriksson, Jonas Fröberg Olsson, Martin Hessler
  • Patent number: 10313064
    Abstract: Systems and methods are disclosed for providing efficient downlink Hybrid Automatic Request (HARQ) feedback. In some embodiments, a method of operation of a wireless device in a cellular communications system comprises receiving downlink control information from a radio access node in a first subframe T. The downlink control information comprises an indication of a HARQ timing offset K. The method further comprises transmitting downlink HARQ feedback to the radio access node in a subframe T+K. In this manner, HARQ feedback can be directly scheduled by the network, which in turn enables efficient HARQ feedback.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: June 4, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andreas Bergström, Niclas Wiberg, Martin Hessler
  • Publication number: 20190158345
    Abstract: Methods performed by a wireless device operating in a dormant mode comprise performing a measurement on each of a plurality of resources from a predetermined set of resources or demodulating and decoding information from each of a plurality of resources from a predetermined set of resources, such as a set of beams. The methods further include evaluating the measurement or the demodulated and decoded information for each of the plurality of resources against a predetermined criterion, and then discontinuing the performing and evaluating of measurements, or discontinuing the demodulating and decoding and evaluation of information, in response to determining that the predetermined criterion is met, such that one or more resources in the predetermined set of resources are neither measured nor demodulated and decoded. The methods further comprise deactivating receiver circuitry, further in response to determining that the predetermined criterion is met.
    Type: Application
    Filed: May 12, 2017
    Publication date: May 23, 2019
    Inventors: Bo Lincoln, Robert Baldemair, Martin Hessler, Eleftherios Karipidis, Torgny Palenius, Eliane Semaan
  • Patent number: 10298309
    Abstract: A method performed by a wireless device (121) for determining the quality of uplink beamforming directions in a wireless communications network (100) is provided. The wireless device (121) receives configuration information indicating uplink channel state information, CSI, processes for uplink beamforming directions. Then, the wireless device (121) transmits reference signals for one or more uplink beamforming directions on uplink transmission resources of corresponding one or more uplink CSI processes. The wireless device (121) also receives one or more uplink CSI process reports for the one or more uplink CSI processes. Then, the wireless device (121) determines the quality of at least one uplink beamforming direction using the one or more uplink CSI process reports. A wireless device (121) for determining the quality of uplink beamforming directions in a wireless communications network (100) is also provided.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: May 21, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Martin Hessler, Erik Eriksson, Jonas Fröberg Olsson, Sven Petersson
  • Patent number: 10299203
    Abstract: According to an aspect of the teachings herein, dynamic cell activation uses the spectrum of a spectrum owner to provide wireless communication services in a location that may not be served by the spectrum owner. For example, a base station determines which one of two or more network operators is targeted by a wireless device requesting access, and correspondingly activates communication services for the device, using spectrum owned by the targeted network operator. Advantageously, the cell(s) may not be persistent and instead may be provided only when access is requested and then only in the spectrum of the targeted network operator(s). This approach offers power savings as compared to providing persistent cells for multiple network operators. Further, the contemplated arrangement makes it economic for third parties and network operators to use of operator-owned spectrum that might otherwise remain unexploited in the involved locations.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: May 21, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Martin Hessler, Erik Eriksson, Pål Frenger, Göran Rune
  • Publication number: 20190150087
    Abstract: There is provided provision of timing information of a first timing information source using timing information of a second timing information source to a wireless device. A network node determines that second timing information from the second timing information source is available and that timing information from the first timing information source is derivable from the second timing information. The network node instructs the wireless device to use the second timing information as a source for deriving first timing information of the first timing information source.
    Type: Application
    Filed: November 28, 2018
    Publication date: May 16, 2019
    Inventors: Erik Eriksson, Pål Frenger, Martin Hessler
  • Publication number: 20190149303
    Abstract: A network node (700), a wireless device and methods therein for handling radio resources when feedback signalling is employed to indicate either an acknowledgement, ACK, or a non-acknowledgement, NACK, of correct reception of data transmitted by the wireless device. The network node (700) assigns a shared radio resource to a group of wireless devices (702) to be used for retransmission in case the feedback signalling for a transmission of data indicates a NACK. When receiving a set of concurrent transmissions of data from the wireless devices (702) where a subset of the concurrent transmissions of data is not received correctly, the network node (700) transmits a NACK to those wireless devices that transmitted the subset that was not received correctly. The network node (700) then receives on the shared radio resource a retransmission of at least one of the concurrent transmissions of data in the subset that was not received correctly from at least one wireless device to which said NACK was transmitted.
    Type: Application
    Filed: May 2, 2016
    Publication date: May 16, 2019
    Inventors: Osman Nuri Can Yilmaz, Nadia Brahmi, Erik Eriksson, Martin Hessler
  • Publication number: 20190149267
    Abstract: There is provided mechanisms for encoding an information sequence into an encoded sequence. A method is performed by an information encoder. The method comprises obtaining the information sequence. The method comprises inserting at least one checkpoint sequence in the information sequence. The method comprises encoding the information sequence comprising the at least one checkpoint sequence into the encoded sequence using a polar code. There is also provided a method for decoding such an encoded sequence.
    Type: Application
    Filed: April 29, 2016
    Publication date: May 16, 2019
    Inventors: Mirsad Cirkic, Jonas Fröberg Olsson, Martin Hessler
  • Patent number: 10291375
    Abstract: A network node, a User Equipment, UE and methods therein, for handling a message transmitted over a radio link. The network node generates a first set of identity check bits for a first part of the message, based on the message and a first check identity, and further generates a second set of identity check bits valid for a second part of the message, based on the message, the first set of identity check bits and a second check identity. The message is then transmitted over the radio link with the first and second sets of identity check bits attached. The UE performs a first verification check using the second set of identity check bits and the second check identity, and performs a second verification check using the first set of identity check bits and the first check identity. The UE then handles the second message part based on the first verification check and the first message part based on the second verification check.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: May 14, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jonas Fröberg Olsson, Erik Eriksson, Pål Frenger, Martin Hessler
  • Publication number: 20190140726
    Abstract: Embodiments herein relate to a method performed by wireless device for applying a Channel State Information, CSI, filtering in a wireless communication network. The wireless device determines a recommended CSI filtering based on measurements of one or more received reference signals from a radio network node. The wireless device transmits, to the radio network node, a first indication of the determined recommended CSI filtering. The wireless device receives, from the radio network node or another radio network node, a first configuration of CSI filtering; and uses the received first configuration for applying CSI filtering.
    Type: Application
    Filed: May 19, 2016
    Publication date: May 9, 2019
    Inventors: Mirsad CIRKIC, Jonas FRÖBERG OLSSON, Martin HESSLER
  • Publication number: 20190141659
    Abstract: A method performed by a User Equipment, UE, for handling Tracking Area, TA, information for the UE is provided. The UE operates in a wireless communications network. The UE obtains (401) a TA configuration comprising a list of allowed Tracking Area Codes, TACs, for the UE. The UE obtains (402) a first TAC and a first Tracking Area Part code, TAP. The first TAC relates to a TA. The TA comprises a number of TA parts, each TA part being associated with a TAP. The UE determines (403) a second TAC based on a combination the first TAC and the first TAP. When the second TAC is not in the list comprised in the TA configuration, the UE requests (404) updated TA information.
    Type: Application
    Filed: April 27, 2017
    Publication date: May 9, 2019
    Inventors: Pål Frenger, Fredrik Gunnarsson, Martin Hessler
  • Publication number: 20190109747
    Abstract: A user equipment (910) is provided for use in a cellular network. The user equipment includes a transceiver (1010), a processor (1020), and a memory (1030). The user equipment (910) is configured to determine, for a data transmission, a mapping form a demodulation reference signal (DMRS) to a PNT-RS. A DMRS resulting signal is generated from a subset of DMRS for a first resource element in a subcarrier. The DMRS resulting signal is copied from the first resource element to a second resource element assigned to the PNT-RS in the subcarrier. The data transmission is transmitted using the DMRS resulting signal and the PNT-RS.
    Type: Application
    Filed: December 5, 2018
    Publication date: April 11, 2019
    Inventors: Martin Hessler, Robert Baldemair, Lars Lindbom, Henrik Sahlin, Niclas Wiberg
  • Publication number: 20190109733
    Abstract: For radio channel estimation, frequency-domain samples of a reference signal received by multiple antenna elements are obtained. The frequency-domain samples are converted to time-domain samples covering different time intervals. By removing phase information from the time-domain samples, the time-domain samples are converted to corresponding signal strength values. The signal strength values obtained for the multiple antenna elements are summed for each of the time intervals. At least one of the frequency domain samples and the time-domain samples are filtered based on the summed signal strength values. Radio channel estimation is then performed based on the filtered samples.
    Type: Application
    Filed: October 6, 2017
    Publication date: April 11, 2019
    Inventor: Martin Hessler
  • Patent number: 10251185
    Abstract: A method of assigning transmission resources by an access node includes allocating first transmission resources to a first device, and allocating second transmission resources to a second device, wherein the second transmission resources partially, but not completely, overlap the first transmission resources. An amount of overlap between the first transmission resources and the second transmission resources may be based on a target error rate for decoding transmissions received from the first device and the second device and/or a signal to interference plus noise ratio (SINR) of transmissions from the first device and the second device. Related access nodes are disclosed.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: April 2, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Erik Eriksson, Martin Hessler
  • Publication number: 20190098525
    Abstract: To provide a more efficient approach to mobility measurement in a radio access network there is provided a method of performing a mobility measurement in a wireless device operating in a radio access network. There is received (S10) a mobility measurement resource assignment identifying one or more demodulation and mobility reference signals of a pre-determined set of demodulation and mobility reference signals. The mobility measurement resource assignment is demodulated (S14) using the one or more demodulation and mobility reference signals of the predetermined set of demodulation and mobility reference signals. Also, there are determined (S14) one or more mobility measurement quality values from the identified one or more demodulation and mobility reference signals.
    Type: Application
    Filed: April 20, 2016
    Publication date: March 28, 2019
    Inventors: Martin Hessler, Pål Frenger, Jonas Fröberg Olsson
  • Patent number: 10244496
    Abstract: There is provided mechanisms for synchronization in a wireless communications network. A method is performed by a transmitting device. The method comprises transmitting a first synchronization signal on a first time/frequency resource in a time/frequency grid. The method comprises receiving a response to the first synchronization signal from a receiving device. The method comprises transmitting a second synchronization signal on a second time/frequency resource in the time/frequency grid to the receiving device, wherein the second time/frequency resource spans a larger portion of the time/frequency grid than the first time/frequency resource.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: March 26, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Henrik Sahlin, Pål Frenger, Martin Hessler, Erik Eriksson
  • Patent number: 10230512
    Abstract: According to certain embodiments, a user equipment (810) is provided for use in a cellular network. The user equipment (810) may include a transceiver (910), a processor (920), and a memory (930). The user equipment (810) may be configured to acquire a Demodulation Reference Signal (DMRS) configuration. A mapping is determined from the DMRS configuration to a phase noise tracking reference signal (PNT-RS). A channel estimate is performed using the DMRS configuration. Phase noise estimation and compensation is performed based on the PNT-RS by using the mapping and the channel estimate.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: March 12, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Martin Hessler, Robert Baldemair, Lars Lindbom, Henrik Sahlin
  • Publication number: 20190075590
    Abstract: Embodiments herein relate to method performed by a radio-network node for handling a data transmission, from a wireless device to the radio-network node, in a wireless communication network. The radio-network node schedules one or more resources for carrying an uplink data transmission from the wireless device over a channel, and for carrying a feedback transmission, of a downlink data transmission from the radio-network node, over the same channel. The radio-network node transmits a control message to the wireless device, which control message indicates the one or more resources scheduled for carrying the uplink data transmission and the feedback transmission over the same channel.
    Type: Application
    Filed: October 5, 2018
    Publication date: March 7, 2019
    Inventors: Håkan Andersson, Andreas Bergström, Mattias Frenne, Johan Furuskog, Martin Hessler, Niclas Wiberg, Qiang Zhang