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).
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Patent number: 8457645Abstract: 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: GrantFiled: April 26, 2005Date of Patent: June 4, 2013Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventor: Stephen G. Craig
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Patent number: 8090323Abstract: 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: GrantFiled: March 4, 2008Date of Patent: January 3, 2012Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stephen G. Craig, Nils Brännström, Olof Enander, Raimundas Gaigalas
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Publication number: 20090227209Abstract: 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: ApplicationFiled: March 4, 2008Publication date: September 10, 2009Applicant: Telefonaktiebolaget LM EricssonInventors: Stephen G. CRAIG, Nils Brannstrom, Olof Enander, Raimundas Gaigalas
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Publication number: 20080261607Abstract: 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: ApplicationFiled: April 26, 2005Publication date: October 23, 2008Inventor: Stephen G. Craig
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Patent number: 6845123Abstract: 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: GrantFiled: February 25, 2000Date of Patent: January 18, 2005Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Henrik Nyberg, Stephen G. Craig, Sverker Magnusson, Erik Edgren
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Publication number: 20040127163Abstract: 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: ApplicationFiled: October 23, 2003Publication date: July 1, 2004Applicant: Telefonaktiebolaget L M EricssonInventors: Peter Schramm, Stephen G. Craig, Mikael Hook
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Patent number: 6671309Abstract: 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: GrantFiled: June 26, 2000Date of Patent: December 30, 2003Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stephen G. Craig, Sverker Magnusson, Erik Edgren, Magnus Thurfjell
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Patent number: 6233270Abstract: 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: GrantFiled: September 28, 1999Date of Patent: May 15, 2001Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stephen G. Craig, Sverker Magnusson, Erik Edgren, Magnus Thurfjell