Patents Assigned to Telefonaktiebolaget LM Ericsson (publ)
  • Patent number: 10271332
    Abstract: Network nodes and methods therein for enabling use, in a cell, of different types of mobile terminals. A method in a network node (501) associated with the cell comprises supporting (302), at least part of, at least two frequency bands having a respective predefined frequency band indicator in said cell. The method further comprises signaling (304) information associated with said at least two frequency bands to UEs in the cell, thus enabling use of UEs operating in a respective different one of said at least two frequency bands in the cell.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Muhammad Kazmi, Tao Cui, Erika Tejedor
  • Patent number: 10271345
    Abstract: A method in a network node relating to a process of controlling a data transfer related to video data of a video streaming service from a server to a wireless device is provided. The network node and wireless device operates in a wireless communications network. The network node determines a scheduling weight value for the wireless device to be used in the data transfer based on a target rate scheduling weight value and a proportional fair rate scheduling weight value. The network node then determines a size of data segment to be used in the data transfer based on at least part of the scheduling weight value. The network node further determines a pending data volume for the transferring of the video data to a play back buffer of the wireless device based on at least part of the scheduling weight value.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Min Wang, Hans Hannu
  • Patent number: 10271373
    Abstract: A UE operating in a network that supports dual connectivity operation is configured to minimize the transmission of unnecessary UE failure indications. The UE detects secondary cell group (SCG) failure for the UE, in response to detecting one of a plurality of SCG failure-triggering events. The UE sends a UE failure indication message, in response to the detecting SCG failure, and refrains from sending further UE failure indication messages in response to SCG failure-triggering events, until the sending of further UE failure indication messages is reenabled. In some cases, the UE sets a state of the UE to a UE prohibit state to prohibit sending further UE failure indication messages while in the UE prohibit state. In other cases, the UE starts a prohibit timer to prohibit sending further UE failure indication messages during the prohibit timer.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Riikka Susitaival, Torsten Dudda
  • Patent number: 10271342
    Abstract: Methods and apparatus are disclosed for allocating PUCCH resources for HARQ feedback so as to minimize the total number PUCCH resources that are allocated while avoiding resource collision. A base station in an uplink Pcell allocates resource sets for use by a plurality of user terminals for providing HARQ feedback to support downlink transmissions to the user terminals in the same transmission time interval. The base station configures a resource group for each user terminal. Each resource group comprises a predetermined number of the allocated resource sets. The base station sorts the user terminals in the order of priority from highest to lowest and selects, in order of priority, a resource set for each user terminal from its configured resource group. To select resources for the user terminal, the base station calculates a weight for each resource set available to the user terminal, and allocate an available resource set with minimum weight to the user terminal.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: April 23, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventor: Hong Ren
  • Patent number: 10271343
    Abstract: Embodiments herein relate to a method performed by a first wireless network access point (12), for allocating uplink or downlink resources, to a mobile terminal (10) that is configured for dual connectivity wherein the mobile terminal (10) supports two or more contemporaneous links with two or more wireless network access points comprising the first wireless network access point (12) and a second wireless network access point (13). The first wireless network access point receives, from the second wireless network access point (13), resource allocation information for the mobile terminal (10) being in a dual connectivity mode. The first wireless network access point determines a resource allocation relating to the first wireless network access point (12) based on the received resource allocation information received from the second wireless network access point (13).
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ali Behravan, Imadur Rahman
  • Patent number: 10270516
    Abstract: The embodiments disclose a method in a relay AP for timing a random access of a UE to the relay AP in a TDD radio communication network. The relay AP performs a self-backhaul over a backhaul link to a donor AP. The backhaul link and the random access link between the relay AP and the UE share a same frequency resource. The method comprises obtaining a first propagation delay information from the donor AP to the relay AP over the backhaul link; determining a timing advance offset for the UE to perform the random access at least based on the first propagation delay information; and transmitting the timing advance offset to the UE.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Zhiheng Guo, Rui Fan, Qianxi Lu, Qingyu Miao
  • Patent number: 10270495
    Abstract: Various methods, devices and nodes in a wireless system are disclosed for efficiently transferring files (both uploads and downloads) between a wireless device and a network node in a Coordinated Multipoint (CoMP) environment. According to a broad aspect, an upload request message is sent from the wireless device to the cooperating nodes in the CoMP set for uploading the data file to the network node, and based on an upload grant from at least one cooperating node, a plurality of piece messages are sent to the cooperating nodes for transmission to the network node, each piece message containing a particular piece of the data file. In yet another broad aspect, both a coordinating node and non-coordinating nodes in the CoMP set are configured to receive piece messages. Non-coordinating nodes that receive piece messages send acknowledgement messages to the coordinating node indicating which pieces have been received.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Ronald Casselman, Gabriel Wainer, Mohammad Moallemi, Misagh Tavanpour, Jan Mikhail, Gary Boudreau
  • Patent number: 10268834
    Abstract: A method for a survey server for managing query communications between at least a requester server and at least one data holding entity is provided. The requester server holds a first share of a private key and the survey server holds a second share of the private key. An encrypted query is received and then forwarded to at least one data holding entity. A plurality of comparison responses is received. Each comparison response is generated by a private comparison protocol that compares the encrypted query with encrypted data. The encrypted data having been encrypted using the public key. Each comparison response having been partially decrypted with the first share of the private key and placed in the array in a randomized order. The array is decrypted using the second share of the private key. At least one result of the query is determined.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: April 23, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Makan Pourzandi, Feras Aljumah, Mourad Debbabi
  • Patent number: 10271325
    Abstract: Systems and methods relating to Listen before Talk (LBT) procedures suitable for, e.g., License Assisted Access (LAA) to an unlicensed frequency spectrum or Long Term Evolution Unlicensed (LTE-U) are disclosed. In some embodiments, a method of operation of a node of a cellular communications network comprises performing a LBT procedure for an observed channel in an unlicensed frequency spectrum. The LBT procedure defers at least one Clear Channel Assessment (CCA) slot such that the LBT procedure concludes at or near a desired starting point for a transmission. The at least one CCA slot comprises at least one of a first CCA slot of the LBT procedure, one or more intermediate CCA slots of the LBT procedure, and a final CCA slot of the LBT procedure. The method further comprises performing the transmission on the observed channel upon completion of the LBT procedure.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Amitav Mukherjee, Jung-Fu Cheng, Sorour Falahati, Du Ho Kang, Havish Koorapaty, Daniel Larsson, Yu Yang
  • Patent number: 10270329
    Abstract: A controller includes a sampling module that samples a signal indicative of the output voltage, a filter module that filters out a ripple component of a sampled signal to generate a filtered signal, and a proportional-integral-derivative (PID) controller that generates a duty cycle control signal. The PID controller includes a first component that scales sample values of the filtered signal to generate a first component signal, a down-sampling module that generates a down-sampled signal, and a storage module that stores a value of the down-sampled signal. The PID controller also includes a second component that generates a second component signal as a product of a factor and a difference signal between each sample value in the filtered signal and stored value, a third component that scales and accumulates the down-sampled signal to generate a third component signal, and a summing module that sums the first, second and third component signals.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: April 23, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Magnus Karlsson, Torbjörn Holmberg, Andreas Larsson
  • Patent number: 10270149
    Abstract: There is provided a circulator device. The circulator device comprises two magnet-free circulators. Each magnet-free circulator has a forced time variance. The circulator device comprises ports. The two circulators are in the circulator device arranged to have mutually anti-phase time variance. Each of the two circulators is coupled to all of the ports. There is also presented an isolator device comprising such a circulator device. There is also presented a radio transceiver device comprising such a circulator device or isolator device.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: April 23, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Rui Hou, Lars Ridell Virtanen
  • Patent number: 10268235
    Abstract: A device (100) for handheld operation, such as a mobile phone, a mobile terminal, a smartphone, a User Equipment (UE), a tablet, a phablet, a media player, a remote control, or a gaming console, is provided. The device is operative to detect an imminent or prevailing indication of an unstable operation of the device when being held by a hand (110) of a user of the device, and, in response thereto, to increase a grip between an outer surface (101, 103) of the device and one or more fingers (111-114) of the hand. The grip may, e.g., be increased by generating an adhesive force, or by increasing a friction, between the outer surface and the one or more fingers. Thereby, the risk for the user dropping the device is reduced, and a more convenient operation of the device is achieved, in particularly if operated single-handedly.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: April 23, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Matthew John Lawrenson, Lars Andersson, Till Burkert, Julian Charles Nolan, Jacob Ström
  • Patent number: 10271324
    Abstract: Embodiments herein relate to e.g. methods performed in first and second communication devices for enabling device to device communication between the first communication device and the second communication device in a radio communications network. The first communication device transmits data in a first data transmission to the second communication device according to a first transmission pattern. The first communication device also transmits control information with the data to the second communication device, which control information indicates a second transmission pattern for a next data transmission from the first communication device to the second communication device. The second communication device receives the control information with the data in the first transmission. Further embodiments relate to the first and second communication devices.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: April 23, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefano Sorrentino, Mats Folke, Stefan Wänstedt
  • Patent number: 10270555
    Abstract: A beamforming device for a phased array antenna, comprising: a laser light source (2) arranged to provide an optical spectrum comprising a plurality of spaced wavelengths, and a distribution unit (4) configured to distribute one or more of the plurality of spaced wavelengths onto a plurality of optical paths (6). A wavelength selection device (8) configured to receive the plurality of spaced wavelengths on each of the plurality of optical paths. One or more phase shift unit (12) connected to a said wavelength selection device, wherein the phase shift unit is configured to introduce a phase shift to a received wavelength. The wavelength selection device on each optical path is configured to selectively transmit a wavelength to the phase shift unit. The wavelength selection device is configured to receive the said phase shifted wavelength from the phase shift unit (12).
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Fabio Cavaliere, Antonio D'Errico, Marzio Puleri
  • Patent number: 10270699
    Abstract: Mechanisms for devolving microflows from aggregate flows are disclosed. An ingress node receives a packet that matches an aggregate flow entry in a flow table. A determination that a devolve action is associated with the aggregate flow entry is made. Based on the determination that the devolve action is associated with the aggregate flow entry, a microflow flow entry is generated in the flow table to define a microflow. The microflow flow entry includes header information extracted from the packet. Microflow generation information that identifies the microflow is sent to a controller node. It is determined that the microflow has timed out based on an idle timeout period of time. In response to determining that the microflow has timed out, microflow termination information that includes path measurement metric information associated with the microflow is sent to the controller node.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Wolfgang John, Catalin Meirosu
  • Patent number: 10271287
    Abstract: There is provided a method, performed by a network node, for enabling uplink power control in a wireless network. The method comprises assigning (S1) a transmit power for downlink transmission of a reference signal, wherein the reference signal is to be used for power control of at least one uplink transmission. The method further comprises determining (S2) a reference signal transmit power parameter providing a fictitious value for the transmit power of the reference signal that is different from the assigned transmit power. The method also comprises transmitting (S3) the reference signal transmit power parameter to at least one wireless device to enable the wireless device(s) to perform transmit power determination for the uplink transmission(s) at least partly based on the fictitious value for the transmit power of the reference signal.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ying Sun, Wei Zhao, Yufeng Zhao
  • Patent number: 10270595
    Abstract: A method of establishing a key related to at least two network instances is disclosed performed in a network node. The network instances are used in serving a communication device. The method comprises obtaining a first key relating to at least a first network instance; obtaining a second key relating to an additional network instance; determining, based on the first key and the second key, a joint key for use in protecting communication with the communication device on the at least first network instance and on the additional network instance. A method in a communication device, network node, communication device, computer programs and computer program products are also disclosed.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Paul Schliwa-Bertling, Karl Norrman, Alexander Pantus, Jari Vikberg, Oscar Zee
  • Patent number: 10270544
    Abstract: The disclosed embodiments relates to a method performed by an D2D capable UE (800) and also relates to the D2D capable UE (800) for determining link quality of a D2D signal or D2D channel. The method includes receiving (710) a D2D signal or channel transmitted from another D2D capable UE; if detection (720) of the D2D signal or channel is determined to be successful; identifying (730) the identity of the other D2D capable UE; measuring (740) received signal power on resources of the D2D signal or channel; measuring (750) signal strength indicator on resources of the D2D signal or channel or on other resources different from the resources of the D2D signal or channel; and determining (760) link quality based on the measured received signal power and based on the measured signal strength indicator.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ali Zaidi, Stefano Sorrentino
  • Patent number: 10271175
    Abstract: A method for retrieving maps from a map server is disclosed where, as an intermediate step, map meta-data is requested on the basis of which one or more map can later be selected. Map meta-data on the basis of location data, indicating the location of the user device, and map criteria, specifying at least one condition for selecting maps which may be entered manually or automatically into a user device. The request is sent to a map server where a search for map meta-data matching the received location data and map criteria is executed. In case of at least one match between the map meta-data, the location data and the map criteria, map meta-data associated with at least one map is provided to the user device, such that the user device can select at least one map, which can be acquired from the map server, at least partly on the basis of the retrieved map meta-data.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Richard Carlsson, Staffan Larsson, Hjalmar Olsson
  • Patent number: 10271225
    Abstract: The disclosure pertains to determining a performance index related to a performance of a communication service provided in a network, wherein the communication service is usable by a mobile user terminal. A method aspect is directed to determining the performance index by comparing performance information associated with a characteristic location of the user terminal and performance information associated with at least one other location visited by the user terminal, the performance index being indicative of a relative performance of the communication service at the characteristic location of the user terminal compared to the at least one other location visited by the user terminal.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: László Toka, Péter Hága, Zsolt Kenesi, Péter Mátray