Patents by Inventor Raul Söderström

Raul Söderström 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).

  • Transmission control method in a radio access network implementing an automatic repetition request (ARQ) protocol at the base station
    Patent number: 7457260
    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: Grant
    Filed: November 27, 2001
    Date of Patent: November 25, 2008
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Johan Torsner, Raul Söderström, Janne Peisa, Toomas Wigell, Gunnar Bark, Ke Wang Hemersson, Niclas Wiberg
  • Transport channel control in a UMTS network
    Patent number: 7194267
    Abstract: A method of switching from a first to a second transport channel for User Equipment (UE) in a UMTS Terrestrial Radio Access Network (UTRAN) of a UMTS system. The method comprises initiating a channel switch, and initiating a synchronisation of the UE to the second channel. The first channel is maintained during the synchronisation phase such that data may be sent between the UE and UTRAN over the first channel during synchronisation. The first channel is terminated only after synchronisation of the UE to the second channel has been achieved.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: March 20, 2007
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Johan Torsner, Raul Söderström, Mikael Winberg, Osmo Pulkkinen
  • Packet transmission in a UMTS network
    Patent number: 6901065
    Abstract: A method of scheduling packets for transmission over the air interface of a UMTS Terrestrial Radio Access Network (UTRAN) in the case where a pair of Radio Network Controllers (RNCs) are acting as separate serving and controlling (drift) RNCs for a mobile terminal. The method comprises sending from the controlling RNC to the serving RNC, allocated scheduling priorities together with packet sizes accepted for transmission with those priorities by the controlling RNC. Subsequently the serving RNC send to the controlling RNC, packets of sizes accepted by the serving RNC together with respective allocated priorities.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: May 31, 2005
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Björn Ehrstedt, Jouko Hyväkkä, Charles Lignell, Reijo Matinmikko, Janne Peisa, Osmo Pulkkinen, Carl Göran Schultz, Raul Söderström, Stefan Henrik Andreas Wager, Toomas Wigell