Patents by Inventor Erik Edgren

Erik Edgren 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: 20050100078
    Abstract: In a telecommunications system that employs frequency hopping techniques, network performance can be significantly improved by taking into consideration the level of interaction (e.g., the collision rate) between frequency hopping sequences, when allocating the frequency hopping sequences throughout the network. In a cellular network, this may be accomplished by deriving a network performance measure as a function of a current allocation of frequency hopping sequences for a number of cells and as a function of an expected collision rate (between the frequency hopping sequences) that appear for the current allocation. The frequency hopping sequences are then re-allocated amongst one or more cells until network performance is optimized. The allocation of frequency hopping sequences that results in optimized network performance may then be used for assigning frequency hopping sequences to new or existing connections (e.g., cellular calls) within a corresponding cell.
    Type: Application
    Filed: December 9, 2004
    Publication date: May 12, 2005
    Inventors: Henrik Nyberg, Stephen Craig, Sverker Magnusson, Erik Edgren
  • Patent number: 6845123
    Abstract: In a telecommunications system that employs frequency hopping techniques, network performance can be significantly improved by taking into consideration the level of interaction (e.g., the collision rate) between frequency hopping sequences, when allocating the frequency hopping sequences throughout the network. In a cellular network, this may be accomplished by deriving a network performance measure as a function of a current allocation of frequency hopping sequences for a number of cells and as a function of an expected collision rate (between the frequency hopping sequences) that appear for the current allocation. The frequency hopping sequences are then re-allocated amongst one or more cells until network performance is optimized. The allocation of frequency hopping sequences that results in optimized network performance may then be used for assigning frequency hopping sequences to new or existing connections (e.g., cellular calls) within a corresponding cell.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: January 18, 2005
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik Nyberg, Stephen G. Craig, Sverker Magnusson, Erik Edgren
  • Patent number: 6671309
    Abstract: In a cellular radio telecommunications system that employs frequency hopping, system performance can be significantly improved by more fully exploiting interference diversity, while maintaining frequency diversity, which is already associated with frequency hopping techniques. In order to more fully exploit interference diversity, each mobile station operating in a cell is allocated, in addition to a frequency hopping sequence, a frequency offset hopping sequence such that each mobile station hops from one frequency to the next frequency as a function of the frequency hopping sequence and its allocated frequency offset hopping sequence. This technique is readily applicable to increase both intercell and intracell interference diversity in unsynchronized or synchronized cells.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: December 30, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stephen G. Craig, Sverker Magnusson, Erik Edgren, Magnus Thurfjell
  • Patent number: 6233270
    Abstract: In a synchronized, cellular radio telecommunications system that employs frequency hopping, system performance can be significantly improved by more fully exploiting interference diversity, while maintaining frequency diversity, which is already associated with frequency hopping techniques. In order to more fully exploit interference diversity, each cell belonging to a group of synchronized cells in the cellular radio telecommunications system is allocated a common, reference frequency hopping sequence. However, the various mobile stations operating in any one of these cells is allocated a different frequency offset hopping sequence.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: May 15, 2001
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stephen G. Craig, Sverker Magnusson, Erik Edgren, Magnus Thurfjell