Patents by Inventor Stephen G. Craig

Stephen G. Craig 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: 8457645
    Abstract: A method and device for channel allocation using channel allocation tiering (CHAT), where radio resources are de-coupled from hardware resources and the available hardware resource units in a cell are divided into logical groups, “channel tiers”. Each tier simultaneously utilizes, partly or fully, the same radio resources. There is a first tier and at least a second tier. In accordance with the invention terminals are allocated to the first tier until a radio resource load threshold close to but less than 100% is reached. Terminals are allocated channels on said at least second tier based upon a terminal's interference suppression capabilities, or the radio requirements of the service being used on the terminal, or the radio location of the terminal, or a combination of the above.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: June 4, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventor: Stephen G. Craig
  • Patent number: 8090323
    Abstract: A device associated with a network receives feedback information associated with a data channel, and determines whether a condition in the data channel is changing based on the feedback information associated with the data channel. The device also calculates an implicit channel quality estimate based on the feedback information. The device further transmits a trigger requesting a channel quality report when the condition in the data channel is changing, and receives the requested channel quality report.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: January 3, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stephen G. Craig, Nils Brännström, Olof Enander, Raimundas Gaigalas
  • Publication number: 20090227209
    Abstract: A device associated with a network receives feedback information associated with a data channel, and determines whether a condition in the data channel is changing based on the feedback information associated with the data channel. The device also calculates an implicit channel quality estimate based on the feedback information. The device further transmits a trigger requesting a channel quality report when the condition in the data channel is changing, and receives the requested channel quality report.
    Type: Application
    Filed: March 4, 2008
    Publication date: September 10, 2009
    Applicant: Telefonaktiebolaget LM Ericsson
    Inventors: Stephen G. CRAIG, Nils Brannstrom, Olof Enander, Raimundas Gaigalas
  • Publication number: 20080261607
    Abstract: A method and device for channel allocation using channel allocation tiering (CHAT), where radio resources are de-coupled from hardware resources and the available hardware resource units in a cell are divided into logical groups, “channel tiers”. Each tier simultaneously utilizes, partly or fully, the same radio resources. There is a first tier and at least a second tier. In accordance with the invention terminals are allocated to the first tier until a radio resource load threshold close to but less than 100% is reached. Terminals are allocated channels on said at least second tier based upon a terminal's interference suppression capabilities, or the radio requirements of the service being used on the terminal, or the radio location of the terminal, or a combination of the above.
    Type: Application
    Filed: April 26, 2005
    Publication date: October 23, 2008
    Inventor: Stephen G. Craig
  • 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
  • Publication number: 20040127163
    Abstract: A method and apparatus for link quality estimation of a potential TDMA-based wireless communication link between a mobile station (10) and a target base station (16a). The mobile station (10) receives a signal on a channel frequency of the target base station (16a c) for measuring a link quality and identifying the target base station (16a c) simultaneously based on the same received signal. The mobile station (10) qualifies the measurement if the target base station (16a e) was identified properly. If not, the measurement is discarded. Measurements can then be tied to specific base stations more reliably, and are at the same time up to date when reported. This provides for secure connections and enables a tighter frequency reuse for enhancing the overall traffic capacity in the network.
    Type: Application
    Filed: October 23, 2003
    Publication date: July 1, 2004
    Applicant: Telefonaktiebolaget L M Ericsson
    Inventors: Peter Schramm, Stephen G. Craig, Mikael Hook
  • 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