Patents by Inventor Gunnar Bark

Gunnar Bark 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: 20040209624
    Abstract: A serving RNC signals the load contribution of all mobiles for which it is the serving RNC to all cells controlled by another RNC that are affected by the uplink transmissions of those mobiles. This allows the other RNC to determine the contribution of those mobiles to the total uplink interference in its cells. In one example, the uplinkload maybe estimated using mobile-based path gain measurements.
    Type: Application
    Filed: April 21, 2003
    Publication date: October 21, 2004
    Inventors: Goran Rune, Gunnar Bark, Niclas Wiberg, Fredrik Gunnarsson
  • Publication number: 20040088641
    Abstract: A method of controlling the sending of data packets from a Base Station (BS) of a Radio Access Network (RAN) to a UE, where the BS is one of a set of BSs transmitting identical data to the UE and each said data packet has a sequence number. The method comprises implementing at the BS an Automatic Repetition reQuest (ARQ) mechanism for resending data packets erroneously received by the UE and, upon receipt of an ARQ status message from the UE, advancing a transmission window of the BS so that its lower region covers the packet having the highest sequence number for which an ARQ acknowledgement has nor yet been received. Where a single BS is transmitting in the downlink direction, and a soft handover set exists for an uplink reverse channel, downlink sending buffers of the BSs of the soft handover set may be synchronized by the exchange of ARQ messages between BSs.
    Type: Application
    Filed: June 5, 2003
    Publication date: May 6, 2004
    Inventors: Johan Torsner, Raul Soderstrom, Janne Peisa, Toomas Wigell, Gunnar Bark, Ke Wang Hemersson, Niclas Wiberg
  • Publication number: 20030202490
    Abstract: The present invention provides centralized load control at the radio network in order to control uplink interference in a cell while at the same time permitting adaptation to fast channel variations. The radio network sends to a mobile terminal a percentage of time that the mobile terminal may transmit over a radio channel in the uplink direction to the radio network. The mobile determines a current or future condition of the radio channel and restricts uplink transmissions based on the received percentage and the radio channel condition. Transmissions are restricted to times when the current or future condition is favorable up to the percentage amount. Channel condition favorability may be determined by the mobile station, in one example embodiment, by comparing the radio channel condition to an average condition of the channel, such as a local or moving average channel condition.
    Type: Application
    Filed: April 24, 2002
    Publication date: October 30, 2003
    Inventors: Fredrik Gunnarsson, Niclas Wiberg, Gunnar Bark, Eva Englund
  • Patent number: 6628956
    Abstract: Delays on a common radio communications channel employed by plural mobile stations to communicate with a base station located in a corresponding geographical cell area are minimized by adapting transmission power based on traffic conditions. For lower traffic loads, a higher transmission power is permitted. For higher traffic loads, a lower power level is set. A transmit power level is determined using a desired signal ratio, such as a target CIR, a transmission path loss over the radio communications channel, and an interference value. One or more adaptive power parameters are also employed in that determination to adapt the open loop power control based on one or more current communications conditions and/or characteristics of the mobile station. For example, an adaptive power parameter may be a function of a current interference in a base station cell either alone or in combination with a current interference in one or more neighboring cells.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: September 30, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gunnar Bark, Thomas Rimhagen, Walter Müller
  • Patent number: 6553235
    Abstract: Downlink congestion is accurately detected and congestion control is more effectively provided without decreasing the system downlink capacity. The characteristics of the downlink transmission of the base station are monitored and used to selectively adjust a fast congestion control (FCC) alarm threshold value in each base station. A FCC relief action is initiated upon detecting the downlink power exceeding the FCC alarm threshold value, i.e., potential downlink congestion. The FCC relief action includes temporarily blocking data services in the system or rapidly decreasing the downlink transmit power of the packet data user's Dedicated Physical Channels in the base stations.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: April 22, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gunnar Bark, Niclas Wiberg, Ke Wang Helmersson
  • Publication number: 20020172264
    Abstract: A method, system and apparatus for spreading physical channels using partly orthogonal multiple code trees. A portion of a first code tree is used to spread the physical channels. This first code tree is a combination of a channelization code sequence and a first scrambling code sequence. A portion of a second code tree is used to spread the physical channels that are remaining and were not spread using the first code tree. This second code tree is a combination of the channelization code sequence and a second scrambling code formed by modifying the first scrambling code. The portion of the second code tree used to spread the channels is orthogonal to the portion of the first code tree used. A plurality of other code trees could be formed using scrambling codes based on the modification of the first scrambling code.
    Type: Application
    Filed: April 5, 2001
    Publication date: November 21, 2002
    Inventors: Niclas Wiberg, Gunnar Bark, Ke Wang Helmersson
  • Publication number: 20020160781
    Abstract: A system, method, and apparatus for the efficient allocation of dedicated and/or shared downlink communication channels for packet data users in a communication system. The present invention provides a switching scheme in which users which are close to a base station are allocated a downlink shared channel in order to save channelization codes in the system, whereas users that are far from a base station are allocated a downlink dedicated channel in order to conserve transmission power.
    Type: Application
    Filed: February 23, 2001
    Publication date: October 31, 2002
    Inventors: Gunnar Bark, Ke Wang Helmersson, Niclas Wiberg
  • Patent number: 6445917
    Abstract: The present invention provides event-based or driven reporting of mobile station measurements. A mobile station measures one or more radio-related parameters for one or more cells in a radio access network. The mobile station evaluates the measured radio-related parameter with respect to a predetermined condition or event and determines that the predetermined condition is satisfied or that the event has occurred. Based on that evaluation, the mobile radio sends a report to the radio access network. Accordingly, the occurrence of an event and/or the satisfaction of a condition triggers the sending of the report to the network. That way, the network receives the information so that it can take timely and appropriate action without sending outdated or redundant measurement reports that do not convey relevant or new information.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: September 3, 2002
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gunnar Bark, Joakim Bergström, Walter Müller
  • Publication number: 20020082023
    Abstract: Downlink congestion is accurately detected and congestion control is more effectively provided without decreasing the system downlink capacity. The characteristics of the downlink transmission of the base station are monitored and used to selectively adjust a fast congestion control (FCC) alarm threshold value in each base station. A FCC relief action is initiated upon detecting the downlink power exceeding the FCC alarm threshold value, i.e., potential downlink congestion. The FCC relief action includes temporarily blocking data services in the system or rapidly decreasing the downlink transmit power of the packet data user's Dedicated Physical Channels in the base stations.
    Type: Application
    Filed: December 22, 2000
    Publication date: June 27, 2002
    Inventors: Gunnar Bark, Niclas Wiberg, Ke Wang Helmersson
  • Publication number: 20020077138
    Abstract: Delays on a common radio communications channel employed by plural mobile stations to communicate with a base station located in a corresponding geographical cell area are minimized by adapting transmission power based on traffic conditions. For lower traffic loads, a higher transmission power is permitted. For higher traffic loads, a lower power level is set. A transmit power level is determined using a desired signal ratio, such as a target CIR, a transmission path loss over the radio communications channel, and an interference value. One or more adaptive power parameters are also employed in that determination to adapt the open loop power control based on one or more current communications conditions and/or characteristics of the mobile station. For example, an adaptive power parameter may be a function of a current interference in a base station cell either alone or in combination with a current interference in one or more neighboring cells.
    Type: Application
    Filed: March 15, 1999
    Publication date: June 20, 2002
    Inventors: GUNNAR BARK, THOMAS RIMHAGEN, WALTER MULLER