Patents by Inventor Kari Sipilä

Kari Sipilä 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: 7492740
    Abstract: The invention proposes a method for controlling a network comprising at least one cell served by a first type network device, wherein the first type network device is adapted to serve second type network devices, the method comprising the steps of detecting (S1) the downlink load of the cell in a direction from the first type network device to the second type network device, deciding (S2) whether the first type network device serving the cell is suited to serve sufficient service to second type network devices requesting service in the cell with respect to the detected downlink load, generating (S3) information as to the attractiveness of the first type network device based on the result of the deciding step, and providing the information to the second type network devices. The invention proposes also a device for controlling a network. By the method and the device, the load on a network can be more evenly distributed.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: February 17, 2009
    Assignee: Nokia Corporation
    Inventors: Kari Sipilä, Uwe Schwarz
  • Patent number: 7248889
    Abstract: A method and a device for controlling a method for controlling the power in an asymmetric soft handover condition in a communication network, including at least two cells each cell being served by a first type network device adapted to serve second type network devices in the respective cell. The method comprises: temporarily adjusting (step S3) a communication parameter of at least one second type network device to set up and/or maintain the communication of the second type network device with the first type network device of at least one of said cells.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: July 24, 2007
    Assignee: Nokia Corporation
    Inventors: Uwe Schwarz, David Soldani, Kari Sipilä, Oscar Salonaho, Harri Holma
  • Patent number: 7167681
    Abstract: According to one embodiment of the invention, an antenna adjustment method, system and network element is provided. The system includes a mechanism for gathering information on interference in predetermined radio cells, a mechanism for arranging the gathered information radio cell-specifically for processing, a mechanism for determining a tilting factor for each predetermined radio cell, wherein the tilting factor relates to the interference the radio cell produces to other cells, and a mechanism for searching for the radio cells having the antenna tilting factors that fulfill a set criteria.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: January 23, 2007
    Assignee: Nokia Corporation
    Inventors: Antti Kuurne, Ari Hämäläinen, Achim Wacker, Kari Sipilä
  • Patent number: 6389294
    Abstract: The invention relates to a method of determining the average effect of radio wave multipath fading in a desired area in a radio system. The desired area of a coverage area of a base station in the system is described by a digital map. The average effect of multipath fading of a transmitter output is determined in different sub-areas of the desired area. In order to reduce the computation amount signal fading parameters are determined at some point of each sub-area by a ray tracing method and the average effect of signal multipath fading in the sub-area is calculated using said parameters.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: May 14, 2002
    Assignee: Nokia Telecommunications Oy
    Inventor: Kari Sipilä