Patents by Inventor Thierry Lestable
Thierry Lestable 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: 11451630Abstract: For determining a temporal reference and/or at least one spatial reference, in a communication system comprising a plurality of gathering gateways configured to transmit beacons, a device performs for each beacon: obtaining (502) therefrom information on current geolocation of the gathering gateway that transmitted said beacon; obtaining (503) therefrom information representing a communication technology used for determining said current geolocation; and obtaining (504) therefrom information indicating whether said current geolocation was determined by internal means or by external means. The device then uses (509) the information thus obtained for determining the temporal reference for synchronizing in time and frequency said device and/or the spatial reference or references for determining the geolocation of said device.Type: GrantFiled: December 15, 2016Date of Patent: September 20, 2022Assignee: SAGEMCOM BROADBAND SASInventors: Massinissa Lalam, Thierry Lestable
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Patent number: 10470146Abstract: A method for synchronising a first gateway of a LoRa network, intended to enable the first gateway to function according to the class B communication mode of the LoRaWAN protocol. The method relies on at least one reception of a synchronisation frame by the first gateway, each synchronisation frame having been transmitted by a second class B gateway in the LoRa network, equipped with synchronisation means and designated by a server. The first gateway uses an instant of reception of each synchronisation frame that it receives in order to synchronise beacon transmissions used in the implementation of the class B communication mode with beacon transmissions made by other class B gateways in the LoRa network.Type: GrantFiled: January 17, 2017Date of Patent: November 5, 2019Assignee: SAGEMCOM BROADBAND SASInventors: Massinissa Lalam, Thierry Lestable
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Publication number: 20190053180Abstract: A method for synchronising a first gateway of a LoRa network, intended to enable the first gateway to function according to the class B communication mode of the LoRaWAN protocol. The method relies on at least one reception of a synchronisation frame by the first gateway, each synchronisation frame having been transmitted by a second class B gateway in the LoRa network, equipped with synchronisation means and designated by a server. The first gateway uses an instant of reception of each synchronisation frame that it receives in order to synchronise beacon transmissions used in the implementation of the class B communication mode with beacon transmissions made by other class B gateways in the LoRa network.Type: ApplicationFiled: January 17, 2017Publication date: February 14, 2019Applicant: SAGEMCOM BROADBAND SASInventors: Massinissa LALAM, Thierry LESTABLE
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Publication number: 20190007497Abstract: For determining a temporal reference and/or at least one spatial reference, in a communication system comprising a plurality of gathering gateways configured to transmit beacons, a device performs for each beacon: obtaining (502) therefrom information on current geolocation of the gathering gateway that transmitted said beacon; obtaining (503) therefrom information representing a communication technology used for determining said current geolocation; and obtaining (504) therefrom information indicating whether said current geolocation was determined by internal means or by external means. The device then uses (509) the information thus obtained for determining the temporal reference for synchronizing in time and frequency said device and/or the spatial reference or references for determining the geolocation of said device.Type: ApplicationFiled: December 15, 2016Publication date: January 3, 2019Inventors: Massinissa LALAM, Thierry LESTABLE
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Patent number: 9622193Abstract: The present invention concerns a method and system for reducing co-channel interference due to the deployment of N femtocells in a macrocellular network. Said method comprises a step (1) of taking power measurements on signals sent over this network, a step (3) of optimizing the transmission powers of the femtocells according to these measurements, and a step (4) of allocating to each femtocell its transmission power. Said method is characterized in that: during step (1) of taking measurements, the power measurements are only made by the N femtocells and these measurements are ordered temporally by a central facility UC in the system, during the optimization step (3), the transmission powers of the femtocells are maximized under the constraint of maintaining a minimum quality of service of terminals that would be attached to the base stations in the macrocellular network.Type: GrantFiled: April 13, 2012Date of Patent: April 11, 2017Assignee: SAGEMCOM ENERGY & TELECOM SASInventors: Massinissa Lalam, Thierry Lestable
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Publication number: 20140335849Abstract: The present invention concerns a method and system for reducing co-channel interference due to the deployment of N femtocells in a macrocellular network. Said method comprises a step (1) of taking power measurements on signals sent over this network, a step (3) of optimising the transmission powers of the femtocells according to these measurements, and a step (4) of allocating to each femtocell its transmission power. Said method is characterised in that: during step (1) of taking measurements, the power measurements are only made by the N femtocells and these measurements are ordered temporally by a central facility UC in the system, during the optimisation step (3), the transmission powers of the femtocells are maximised under the constraint of maintaining a minimum quality of service of terminals that would be attached to the base stations in the macrocellular network.Type: ApplicationFiled: April 13, 2012Publication date: November 13, 2014Applicant: SAGEMCOM BROADBAND SASInventors: Massinissa Lalam, Thierry Lestable
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Patent number: 8015469Abstract: A method for generating a non-binary Low Density Parity Check (LDPC) code. The method includes generating non-binary identity matrixes so as to satisfy at least one condition, wherein the non-binary LDPC code is defined by a parity check matrix, and the parity check matrix includes a plurality of sub-matrixes, which are divided into zero matrixes and the non-binary identity matrixes.Type: GrantFiled: May 3, 2007Date of Patent: September 6, 2011Assignee: Samsung Electronics Co., LtdInventors: Chi-Woo Lim, Sung-Eun Park, Dong-Seek Park, Jae-Yoel Kim, Seung-Hoon Choi, Gyu-Bum Kyung, Hong-Sil Jeong, Thierry Lestable
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Patent number: 8006161Abstract: An apparatus and a method for receiving a signal in a communication system using a Low Density Parity Check (LDPC) code. The apparatus and the method includes decoding a received signal according to a hybrid decoding scheme, wherein the hybrid decoding scheme is generated by combining two of a first decoding scheme, a second decoding scheme, and a third decoding scheme.Type: GrantFiled: October 26, 2006Date of Patent: August 23, 2011Assignee: Samsung Electronics Co., LtdInventors: Thierry Lestable, Sung-Eun Park
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Patent number: 7984364Abstract: An apparatus and method for encoding/decoding a non-binary low density parity check (LDPC) code in a communication system. The apparatus and method includes receiving an information vector; generating a non-binary LDPC code by encoding the information vector into a non-binary LDPC code according to a non-binary LDPC encoding scheme.Type: GrantFiled: May 3, 2007Date of Patent: July 19, 2011Assignee: Samsung Electronics Co., LtdInventors: Sung-Eun Park, Chi-Woo Lim, Dong-Seek Park, Jae-Yoel Kim, Seung-Hoon Choi, Gyu-Bum Kyung, Hong-Sil Jeong, Thierry Lestable
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Patent number: 7941736Abstract: Disclosed is an apparatus for receiving a signal in a communication system, which receives the signal, and decodes the received signal in a non-binary Low Density Parity Check (LDPC) decoding scheme, in which elements of a Galois field are expressed by an exponent representation, thereby minimizing the memory capacity required for a check node operation when the non-binary LDPC code is decoded.Type: GrantFiled: February 22, 2007Date of Patent: May 10, 2011Assignee: Samsung Electronics Co., LtdInventors: Sung-Eun Park, Chi-Woo Lim, Thierry Lestable, Dong-Seek Park, Jae-Yoel Kim
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Patent number: 7594161Abstract: A method of approximating the generation of a logarithm of a sum of exponents, for use in a log-MAP decoding operation, by performing a first operation on the data, calculating a correction term in a second operation, and adding the correction term to the results of the first operation, in which the second operation comprises calculating an approximate correction term by an operation including at least one division stage in which a first result obtained based on said data and at least a first coefficient is divided by a second result obtained based on said data and at least a second coefficient.Type: GrantFiled: September 12, 2005Date of Patent: September 22, 2009Assignee: Samsung Electronics (UK) LimitedInventor: Thierry Lestable
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Publication number: 20080250305Abstract: A method for generating a non-binary Low Density Parity Check (LDPC) code. The method includes generating non-binary identity matrixes so as to satisfy at least one condition, wherein the non-binary LDPC code is defined by a parity check matrix, and the parity check matrix includes a plurality of sub-matrixes, which are divided into zero matrixes and the non-binary identity matrixes.Type: ApplicationFiled: May 3, 2007Publication date: October 9, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chi-Woo Lim, Sung-Eun Park, Dong-Seek Park, Jae-Yoel Kim, Seung-Hoon Choi, Gyu-Bum Kyung, Hong-Sil Jeong, Thierry Lestable
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Patent number: 7346132Abstract: The present invention relates to a method for transmitting signaling information between an access point and a terminal of a multi-carrier radio communication network, said signaling information comprising information related to the different sub-carriers (and being transmitted on one predefined sub-carrier) according to the present invention, the method comprises the steps of performing a de-correlation transformation on said signaling information by exploiting the correlation between at least two sub carriers and applying an entropy compression on said de-correlated signaling information.Type: GrantFiled: May 20, 2004Date of Patent: March 18, 2008Assignee: AlcatelInventors: Hang Nguyen, Thierry Lestable, Jérôme Brouet
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Patent number: 7324431Abstract: A method of allocating a communication signal to multiple carrier frequencies in a multi carrier communication scheme is disclosed. The method involves a step of defining a pilot pattern (76), each pilot symbol of the pattern defining a cluster of carrier frequencies. Furthermore, it is estimated (78) which carrier frequencies are appropriate to fulfil a desired quality of service requirement as a function of spreading factors associated with the pilot patterns. A carrier frequency is selected (86, 92) which is appropriate to fulfil the desired quality of service requirement. Further carrier frequencies that are separated from the first selected carrier frequency by the spreading factor (88, 94) are allocated.Type: GrantFiled: July 8, 2004Date of Patent: January 29, 2008Assignee: AlcatelInventor: Thierry Lestable
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Publication number: 20070283219Abstract: An apparatus and method for encoding/decoding a non-binary low density parity check (LDPC) code in a communication system. The apparatus and method includes receiving an information vector; generating a non-binary LDPC code by encoding the information vector into a non-binary LDPC code according to a non-binary LDPC encoding scheme.Type: ApplicationFiled: May 3, 2007Publication date: December 6, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Eun Park, Chi-Woo Lim, Dong-Seek Park, Jae-Yoel Kim, Seung-Hoon Choi, Gyu-Bum Kyung, Hong-Sil Jeong, Thierry Lestable
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Publication number: 20070226585Abstract: Disclosed is an apparatus for receiving a signal in a communication system, which receives the signal, and decodes the received signal in a non-binary Low Density Parity Check (LDPC) decoding scheme, in which elements of a Galois field are expressed by an exponent representation, thereby minimizing the memory capacity required for a check node operation when the non-binary LDPC code is decoded.Type: ApplicationFiled: February 22, 2007Publication date: September 27, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Eun Park, Chi-Woo Lim, Thierry Lestable, Dong-Seek Park, Jae-Yoel Kim
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Publication number: 20070226587Abstract: Provided are an apparatus and a method for receiving a signal in a communication system, which receives the signal, and decodes the received signal in a Low Density Parity Check (LDPC) decoding scheme in which the sequence of check node operations is scheduled, thereby improving the decoding performance of the LDPC code.Type: ApplicationFiled: February 22, 2007Publication date: September 27, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Eun Park, Chi-Woo Lim, Thierry Lestable, Dong-Seek Park, Jae-Yoel Kim
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Publication number: 20070226586Abstract: An apparatus and method is provided for receiving a signal in a communication system. The signal reception apparatus includes a receiver for receiving a signal, and a decoder for decoding the received signal according to a Low Density' Parity Check (LDPC) decoding scheme. The LDPC decoding scheme includes check node calculation at a particular check node so as to reuse calculation values of some check node calculations among the check node calculations necessary for receiving at the check node messages from all variable nodes connected to the check node and outputting messages to all of the variable nodes connected to the check node.Type: ApplicationFiled: February 22, 2007Publication date: September 27, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Eun Park, Thierry Lestable, Dong-Seek Park, Jae-Yoel Kim
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Publication number: 20070168833Abstract: An apparatus and a method for receiving a signal in a communication system using a Low Density Parity Check (LDPC) code. The apparatus and the method includes decoding a received signal according to a hybrid decoding scheme, wherein the hybrid decoding scheme is generated by combining two of a first decoding scheme, a second decoding scheme, and a third decoding scheme.Type: ApplicationFiled: October 26, 2006Publication date: July 19, 2007Applicant: Samsung Electronics Co. Ltd.Inventors: Thierry Lestable, Sung-Eun Park
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Publication number: 20060182062Abstract: A method of inter-frequency handover for when a user terminal moves from a first cell to a second cell. Each of the cells comprises an access point to a radio network, and the measurements for the handover are performed by the access point of the first cell.Type: ApplicationFiled: January 13, 2006Publication date: August 17, 2006Applicant: Samsung Electronics (UK) LimitedInventors: Vaia Sdralia, Thierry Lestable, Hokyu Choi