Patents by Inventor Sheldon L. Gilbert
Sheldon L. Gilbert 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: 8654664Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: GrantFiled: April 18, 2011Date of Patent: February 18, 2014Assignee: Wi-LAN, Inc.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Patent number: 8537757Abstract: The invention relates to communication systems and to systems and methods for implementing adaptive call admission control (CAC) in such systems. Adaptive call admission control can determine what CPE to base station calls (connections) are allowed at any given time. CAC, coupled with precedence, can further determine what connections are suspended if less bandwidth is available than is currently committed. Multiple techniques are disclosed to select connections for suspension. These techniques include suspending enough connections through the affected CPE until there is enough bandwidth to meet the remaining commitment, randomly (or in a round robin fashion) choosing connection to suspend from the entire set of connection, and using precedence priority levels.Type: GrantFiled: June 1, 2012Date of Patent: September 17, 2013Assignee: Wi-Lan, Inc.Inventors: Eli Arviv, Brian Spinar, Kenneth L. Stanwood, David Gazelle, Ofer Zimmerman, Penny Efraim, Yair Bourlas, Sheldon L. Gilbert
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Patent number: 8462723Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: GrantFiled: April 18, 2011Date of Patent: June 11, 2013Assignee: WI-LAN, Inc.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Patent number: 8315640Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: GrantFiled: December 23, 2009Date of Patent: November 20, 2012Assignee: Wi-LAN, Inc.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Patent number: 8249014Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: GrantFiled: August 4, 2011Date of Patent: August 21, 2012Assignee: Wi-LAN, Inc.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Patent number: 8213359Abstract: The invention relates to communication systems and to systems and methods for implementing adaptive call admission control (CAC) in such systems. Adaptive call admission control can determine what CPE to base station calls (connections) are allowed at any given time. CAC, coupled with precedence, can further determine what connections are suspended if less bandwidth is available than is currently committed. Multiple techniques are disclosed to select connections for suspension. These techniques include suspending enough connections through the affected CPE until there is enough bandwidth to meet the remaining commitment, randomly (or in a round robin fashion) choosing connection to suspend from the entire set of connection, and using precedence priority levels.Type: GrantFiled: March 30, 2009Date of Patent: July 3, 2012Assignee: Wi-LAN, Inc.Inventors: Yair Bourlas, Kenneth L. Stanwood, Brian Spinar, Sheldon L. Gilbert
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Patent number: 8199779Abstract: Apparatus, system and method for synchronizing one or more clocks across a communication link. A slave clock may be synchronized to a master clock by means of a synchronization signal sent from the master to the slave clock side of the link. The synchronization signal may be an expected signal pattern sent at intervals expected by the slave side. The slave clock may correlate received signals with a representation of the expected synchronization signal to produce a correlation sample sequence at a first sample rate which is related as n times the slave clock rate. The synchronization signal receipt time indicated by the correlation sample sequence may be refined by interpolating the correlation sample sequence around a best correlation sample to locate a best interpolation at an interpolation resolution smaller than the sample resolution. The best interpolation may in turn be further refined by estimating between interpolator outputs adjacent to the best interpolation output.Type: GrantFiled: February 4, 2011Date of Patent: June 12, 2012Assignee: Wi-LAN, Inc.Inventors: Pranesh Sinha, Sharon Akler, Yair Bourlas, Timothy Leo Gallagher, Sheldon L. Gilbert, Stephen C. Pollmann, Frederick W. Price, Blaine C. Readler, John Wiss, Eli Arviv
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Patent number: 8189514Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: GrantFiled: June 29, 2005Date of Patent: May 29, 2012Assignee: Wi-LAN, Inc.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Publication number: 20110292904Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: ApplicationFiled: August 4, 2011Publication date: December 1, 2011Applicant: WI-LAN, INC.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Publication number: 20110249585Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: ApplicationFiled: April 18, 2011Publication date: October 13, 2011Applicant: WI-LAN, INC.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Publication number: 20110249586Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: ApplicationFiled: April 18, 2011Publication date: October 13, 2011Applicant: WI-LAN, INC.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Patent number: 8027298Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: GrantFiled: December 23, 2009Date of Patent: September 27, 2011Assignee: Wi-LAN, Inc.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Publication number: 20110122981Abstract: Apparatus, system and method for synchronizing one or more clocks across a communication link. A slave clock may be synchronized to a master clock by means of a synchronization signal sent from the master to the slave clock side of the link. The synchronization signal may be an expected signal pattern sent at intervals expected by the slave side. The slave clock may correlate received signals with a representation of the expected synchronization signal to produce a correlation sample sequence at a first sample rate which is related as n times the slave clock rate. The synchronization signal receipt time indicated by the correlation sample sequence may be refined by interpolating the correlation sample sequence around a best correlation sample to locate a best interpolation at an interpolation resolution smaller than the sample resolution. The best interpolation may in turn be further refined by estimating between interpolator outputs adjacent to the best interpolation output.Type: ApplicationFiled: February 4, 2011Publication date: May 26, 2011Applicant: WI-LAN, INC.Inventors: Pranesh Sinha, Sharon Akler, Yair Bourlas, Timothy Leo Gallagher, Sheldon L. Gilbert, Stephen C. Pollmann, Frederick W. Price, Blaine C. Readler, John Wiss, Eli Arviv
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Publication number: 20110077034Abstract: Base stations having potentially interfering terminal stations that are geographically located on the same or similar diagonal or Line of Sight (relative to the base station) operate on a first set of time frames (e.g., “even” time frames). Similarly, base stations having potentially interfering terminal stations that are not geographically located on the same or similar diagonals operate on a second set of time frames (e.g., “odd” time frames). By alternating in their use of the even and odd frames, the potential for co-channel interference between terminal stations is minimized. Systems and methods are disclosed which reduce co-channel and adjacent channel interference between terminal stations of different cells as well as adjacent channel interference between terminal stations of adjacent cells. The methods and systems so described can be used during the deployment or expansion of a communication system in a region.Type: ApplicationFiled: December 2, 2010Publication date: March 31, 2011Applicant: WI-LAN, INC.Inventors: Israel Jay Klein, Sheldon L. Gilbert, Kenneth L. Stanwood, Jacques Behar
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Patent number: 7907640Abstract: A slave clock may be synchronized to a master clock by means of a synchronization signal sent from the master to the slave clock side of the link. The synchronization signal may be an expected signal pattern sent at intervals expected by the slave side. The slave clock may correlate received signals with a representation of the expected synchronization signal to produce a correlation sample sequence at a first sample rate which is related as n times the slave clock rate. A best interpolation may in turn be further refined by estimating between interpolator outputs adjacent to the best interpolation output. The synchronization signal receipt time thus determined is compared to the expected time based upon the slave clock, which is adjusted until the times match. The best interpolation may in turn be further refined by estimating between interpolator outputs adjacent to the best interpolation output.Type: GrantFiled: July 23, 2009Date of Patent: March 15, 2011Assignee: Wi-LAN, Inc.Inventors: Pranesh Sinha, Sharon Akler, Yair Bourlas, Timothy Leo Gallagher, Sheldon L. Gilbert, Stephen C. Pollmann, Frederick W. Price, Blaine C. Readler, John Wiss, Eli Arviv
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Publication number: 20100150094Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: ApplicationFiled: December 23, 2009Publication date: June 17, 2010Applicant: WI-LAN, INC.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Publication number: 20100150093Abstract: A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE.Type: ApplicationFiled: December 23, 2009Publication date: June 17, 2010Applicant: WI-LAN, Inc.Inventors: Kenneth L. Stanwood, James F. Mollenauer, Israel Jay Klein, Sheldon L. Gilbert
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Patent number: 7672268Abstract: In a system utilizing double wide communication channels, if a particular CPE requires a sustained rate that is greater than the bandwidth of a single channel, data to and from the CPE may be split across Channels A and B. Also, when the bandwidth requirements of a particular CPE peaks at a data rate greater than the capacity of a single channel, the CPE's data may be split across the two channels. In one embodiment, a single-wide CPE may communicate with the base station without knowing that it is communicating with a base station configured to communicate using a double wide channel.Type: GrantFiled: June 17, 2005Date of Patent: March 2, 2010Inventors: Kenneth Stanwood, Timothy Leo Gallagher, Sheldon L. Gilbert, Yair Bourlas, Charles Bergan, Sam A. Liu, Darren Smith
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Publication number: 20090279652Abstract: Apparatus, system and method for synchronizing one or more clocks across a communication link. A slave clock may be synchronized to a master clock by means of a synchronization signal sent from the master to the slave clock side of the link. The synchronization signal may be an expected signal pattern sent at intervals expected by the slave side. The slave clock may correlate received signals with a representation of the expected synchronization signal to produce a correlation sample sequence at a first sample rate which is related as n times the slave clock rate. The synchronization signal receipt time indicated by the correlation sample sequence may be refined by interpolating the correlation sample sequence around a best correlation sample to locate a best interpolation at an interpolation resolution smaller than the sample resolution. The best interpolation may in turn be further refined by estimating between interpolator outputs adjacent to the best interpolation output.Type: ApplicationFiled: July 23, 2009Publication date: November 12, 2009Applicant: WI-LAN, INC.Inventors: Pranesh Sinha, Sharon Akler, Yair Bourlas, Timothy Leo Gallagher, Sheldon L. Gilbert, Stephen C. Pollmann, Frederick W. Price, Blaine C. Readler, John Wiss, Eli Arviv
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Patent number: RE42068Abstract: The present invention is a method and apparatus for reducing co-channel interference. The present invention includes a powerful means for eliminating co-channel interference from base stations in a wireless communication system. The present co-channel interference reducing method and apparatus utilizes frame synchronization between selected time frames (e.g., odd and even time frames) to reduce co-channel interference. Advantageously, the present invention reduces co-channel interference and, thus, allows robust modulation schemes to operate even at worst case line-of-sight (LoS) interference scenarios of 100%. The present invention can also use an uplink/downlink ratio formula to further improve system capacity (i.e., reduce co-channel interference) in ATDD systems. The present inventive method and apparatus can be used in any type of frame based and frame synchronized communication system.Type: GrantFiled: March 16, 2006Date of Patent: January 25, 2011Inventors: Israel Jay Klein, Sheldon L. Gilbert, Rami Hadar