Patents by Inventor Krister Sundberg

Krister Sundberg 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).

  • Patent number: 10771916
    Abstract: It is presented a method for determining a position of a wireless device within a single radio cell served by a plurality of remote radio heads. The method is performed in a position determination node and comprises the steps of: receiving a measured power signature comprising at least two, in time separated, power measurement values of a downlink signal, the measured power signature originating from the wireless device; comparing the measured power signature with a set of reference power signatures, wherein each one of the plurality of remote radio heads is associated with a reference power signature and the reference power signatures differ for at least two of the plurality of remote radio heads; and determining a position in that the wireless device is in the vicinity of one of the at least one remote radio head whose reference power signature best matches the measured power signature.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: September 8, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Miguel Lopez, Benny Lennartson, Krister Sundberg
  • Publication number: 20170245102
    Abstract: It is presented a method for determining a position of a wireless device within a single radio cell served by a plurality of remote radio heads. The method is performed in a position determination node and comprises the steps of: receiving a measured power signature comprising at least two, in time separated, power measurement values of a downlink signal, the measured power signature originating from the wireless device; comparing the measured power signature with a set of reference power signatures, wherein each one of the plurality of remote radio heads is associated with a reference power signature and the reference power signatures differ for at least two of the plurality of remote radio heads; and determining a position in that the wireless device is in the vicinity of one of the at least one remote radio head whose reference power signature best matches the measured power signature.
    Type: Application
    Filed: September 10, 2014
    Publication date: August 24, 2017
    Inventors: Miguel Lopez, Benny Lennartson, Krister Sundberg
  • Patent number: 9713178
    Abstract: The present invention relates to wireless communications. More especially it relates to wireless packet data communications. Particularly it relates to latency reduction by distinguishing connection initiation of circuit switched and packet switched connections, respectively.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: July 18, 2017
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventor: Krister Sundberg
  • Publication number: 20160081126
    Abstract: The present invention relates to wireless communications. More especially it relates to wireless packet data communications. Particularly it relates to latency reduction by distinguishing connection initiation of circuit switched and packet switched connections, respectively.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 17, 2016
    Inventor: Krister Sundberg
  • Patent number: 9167570
    Abstract: The present invention relates to wireless communications. More especially it relates to wireless packet data communications. Particularly it relates to latency reduction by distinguishing connection initiation of circuit switched and packet switched connections, respectively.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: October 20, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventor: Krister Sundberg
  • Publication number: 20150071230
    Abstract: The present invention relates to wireless communications. More especially it relates to wireless packet data communications. Particularly it relates to latency reduction by distinguishing connection initiation of circuit switched and packet switched connections, respectively.
    Type: Application
    Filed: November 17, 2014
    Publication date: March 12, 2015
    Inventor: Krister Sundberg
  • Patent number: 8934450
    Abstract: In a mobile station for use in a cellular radio system, the mobile station is adapted to increase radio measurements relating to the currently best cell at times when the user is preparing to set up a call in order to increase the likelihood that a mobile station is camping in the correct cell when setting up a call. This is obtained by adding a third mode to the already existing idle and active modes. The additional mode provides for an increased amount of idle mode measurements compared to the conventional idle mode.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: January 13, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Krister Sundberg, Benny Lennartson
  • Patent number: 8897222
    Abstract: The present invention relates to wireless communications. More especially it relates to wireless packet data communications. Particularly it relates to latency reduction by distinguishing connection initiation of circuit switched and packet switched connections, respectively.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: November 25, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventor: Krister Sundberg
  • Patent number: 8805284
    Abstract: Interference in a wireless communication system receiver, such as at a base station, is identified based on monitoring automatic gain control (AGC) events. AGC statistics in combination with base band processing are used to identify the interference. Performance degradation is evaluated, and interference mitigation solutions are proposed based on the identified interference. Mitigation solutions include IRC, scheduling restrictions, and filter modifications including replacement of filters.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: August 12, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Alireza Nejatian, Krister Sundberg
  • Patent number: 8781461
    Abstract: In a cellular radio system a message is transmitted in the uplink from a mobile station running an application to the cellular radio system informing the radio system of the status of the application thereby enabling the operator of the radio system to collect such data for use in optimizing the planning of the radio system or as an input parameter when detecting and trouble shooting problems in the radio system network.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: July 15, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Benny Lennartsson, Krister Sundberg, Fredrik Tagt
  • Patent number: 8711991
    Abstract: The invention relates to a method in a receiving communication node for performing channel estimation on a signal received over a channel from a transmitting communication node. The receiving and transmitting communication nodes are comprised in a radio communications network.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: April 29, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Jinliang Huang, Krister Sundberg
  • Publication number: 20120147819
    Abstract: The present invention relates to wireless communications. More especially it relates to wireless packet data communications. Particularly it relates to latency reduction by distinguishing connection initiation of circuit switched and packet switched connections, respectively.
    Type: Application
    Filed: February 16, 2012
    Publication date: June 14, 2012
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Krister Sundberg
  • Patent number: 8195258
    Abstract: The present invention relates to method, and apparatus relating to cellular radio communication (300). By communicating information repeatedly in either an uplink or a downlink connection by directing a main lobe of a radiation pattern (331-1 to 331-n; 335-1 to 335-n) of the communication in different directions (d1, d2, d2, d4) in the cell (361,362) of the cellular radio communication network (300) the reception of repetitive transmission of any information in both uplink and downlink connection with as little complexity added to the network as possible is improved.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: June 5, 2012
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Benny Lennartson, Miguel Lopez, Krister Sundberg
  • Patent number: 8144610
    Abstract: The present invention relates to wireless communications. More especially it relates to wireless packet data communications. Particularly it relates to latency reduction by distinguishing connection initiation of circuit switched and packet switched connections, respectively.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: March 27, 2012
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventor: Krister Sundberg
  • Patent number: 8140105
    Abstract: The present invention presents a method for controlling output power and reducing interference in a radio communications network wherein data transmitted over a radio interface is coded and transmitted in radio blocks. The data passes a buffer of a node before transmission. The method is characterized by a step of determining a recommended Modulation and Coding Scheme level, MCS level, based on at least one radio quality measurement. A further characterizing step is analyzing of buffer characteristics and/or radio block usage of transmission radio blocks to determine if there is a preferred MCS level compared to the recommended MCS level. The preferred MCS level is typically a more robust MCS level. The recommended MCS, level if so determined, is decreased to the preferred MCS level, and in relation to decreasing the MCS level decreasing the output power according to a predefined down regulation scheme. The interference level is reduced in the network depending on an application type.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: March 20, 2012
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Peter Bjorken, Lars Klockar, Krister Sundberg
  • Publication number: 20120028663
    Abstract: Interference in a wireless communication system receiver, such as at a base station, is identified based on monitoring automatic gain control (AGC) events. AGC statistics in combination with base band processing are used to identify the interference. Performance degradation is evaluated, and interference mitigation solutions are proposed based on the identified interference. Mitigation solutions include IRC, scheduling restrictions, and filter modifications including replacement of filters.
    Type: Application
    Filed: February 24, 2011
    Publication date: February 2, 2012
    Inventors: Alireza Nejatian, Krister Sundberg
  • Patent number: 8064901
    Abstract: Systems and methods for remotely evaluating antenna installations in a mobile radio communication system, wherein each antenna installation comprises at least one pair of antenna elements arranged for diversity reception. The received signal strength from a plurality of mobile stations is measured at the respective antenna elements of each pair of antenna elements; the signal strength values from each antenna element are compared for each pair of antenna elements; and, a plurality of comparison results are visually presented on a display as a function of both the comparison result and a parameter related to the position of each of the plurality of mobile stations relative to the location of the base station, whereby differences in reception characteristics between antenna elements of each pair can be detected and such pair can be identified for maintenance.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: November 22, 2011
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Benny Lennartson, Krister Sundberg
  • Publication number: 20110274187
    Abstract: The invention relates to a method in a receiving communication node for performing channel estimation on a signal received over a channel from a transmitting communication node. The receiving and transmitting communication nodes are comprised in a radio communications network.
    Type: Application
    Filed: April 11, 2011
    Publication date: November 10, 2011
    Inventors: Jinliang Huang, Krister Sundberg
  • Publication number: 20100120464
    Abstract: The present invention presents a method for controlling output power and reducing interference in a radio communications network wherein data transmitted over a radio interface is coded and transmitted in radio blocks. The data passes a buffer of a node before transmission. The method is characterized by a step of determining a recommended Modulation and Coding Scheme level, MCS level, based on at least one radio quality measurement. A further characterising step is analyzing of buffer characteristics and/or radio block usage of transmission radio blocks to determine if there is a preferred MCS level compared to the recommended MCS level. The preferred MCS level is typically a more robust MCS level. The recommended MCS, level if so determined, is decreased to the preferred MCS level, and in relation to decreasing the MCS level decreasing the output power according to a predefined down regulation scheme. The interference level is reduced in the network depending on an application type.
    Type: Application
    Filed: March 26, 2007
    Publication date: May 13, 2010
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Peter Bjorken, Lars Klockar, Krister Sundberg
  • Publication number: 20100105403
    Abstract: The present invention relates to method, and apparatus relating to cellular radio communication (300). By communicating information repeatedly in either an uplink or a downlink connection by directing a main lobe of a radiation pattern (331-1 to 331-n; 335-1 to 335-n) of the communication in different directions (d1, d2, d2, d4) in the cell (361,362) of the cellular radio communication network (300) the reception of repetitive transmission of any information in both uplink and downlink connection with as little complexity added to the network as possible is improved.
    Type: Application
    Filed: February 16, 2007
    Publication date: April 29, 2010
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Benny Lennartson, Miguel Lopez, Krister Sundberg