Patents by Inventor Lee Ying Loh
Lee Ying Loh 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: 9680611Abstract: Automatic retransmission in communications systems. In one embodiment, a portion of data is identified to be retransmitted based on feedback information indicating a negative acknowledgement (NACK) during a cyclic redundancy check (CRC) on a previous transmission of the portion of data. A retransmission mode is selected for the portion of data, from at least a first mode that retransmits the portion of data on at least a first transmitter antenna while transmitting new data on at least a second transmitter antenna, based on first desired transmission characteristics; and a second mode that retransmits the portion of data simultaneously on at least the first and second transmitter antennas, based on second desired transmission characteristics.Type: GrantFiled: April 20, 2015Date of Patent: June 13, 2017Assignee: Inventergy, Inc.Inventors: Choo Eng Yap, Lee Ying Loh
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Patent number: 9425924Abstract: Automatic retransmission in communications systems. In one embodiment, a portion of data is identified to be retransmitted based on feedback information indicating a negative acknowledgement (NACK) during a cyclic redundancy check (CRC) on a previous transmission of the portion of data. A retransmission mode is selected for the portion of data, from at least a first mode that retransmits the portion of data on at least a first transmitter antenna while transmitting new data on at least a second transmitter antenna, based on first desired transmission characteristics; and a second mode that retransmits the portion of data simultaneously on at least the first and second transmitter antennas, based on second desired transmission characteristics.Type: GrantFiled: July 1, 2014Date of Patent: August 23, 2016Assignee: INVENTERGY, INC.Inventors: Choo Eng Yap, Lee Ying Loh
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Patent number: 9397794Abstract: Automatic retransmission in communications systems. An embodiment includes retransmitting data. A cyclic redundancy check (CRC) is executed on a portion of data received as part of a data stream at a receiver antenna. Feedback information of acknowledgment (ACK) or negative acknowledgement (NACK) for the portion of data is determined based on a result of the CRC. It is identified that the portion of data is to be retransmitted based on the feedback information indicating a NACK with respect to the portion of data. A retransmission mode is selected for the portion of data based on desired characteristics of the data stream, including a first mode that retransmits the portion of data on at least a first transmitter antenna while transmitting new data on at least a second transmitter antenna; and a second mode that retransmits the portion of data simultaneously on at least the first and second transmitter antennas.Type: GrantFiled: July 1, 2014Date of Patent: July 19, 2016Assignee: INVENTERGY, INC.Inventors: Choo Eng Yap, Lee Ying Loh
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Publication number: 20150304072Abstract: Automatic retransmission in communications systems. In one embodiment, a portion of data is identified to be retransmitted based on feedback information indicating a negative acknowledgement (NACK) during a cyclic redundancy check (CRC) on a previous transmission of the portion of data. A retransmission mode is selected for the portion of data, from at least a first mode that retransmits the portion of data on at least a first transmitter antenna while transmitting new data on at least a second transmitter antenna, based on first desired transmission characteristics; and a second mode that retransmits the portion of data simultaneously on at least the first and second transmitter antennas, based on second desired transmission characteristics.Type: ApplicationFiled: April 20, 2015Publication date: October 22, 2015Inventors: Choo Eng YAP, Lee Ying LOH
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Patent number: 9015546Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.Type: GrantFiled: July 20, 2012Date of Patent: April 21, 2015Assignee: Inventergy, Inc.Inventors: Choo Eng Yap, Lee Ying Loh
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Publication number: 20140362679Abstract: Automatic retransmission in communications systems. An embodiment includes retransmitting data. A cyclic redundancy check (CRC) is executed on a portion of data received as part of a data stream at a receiver antenna. Feedback information of acknowledgment (ACK) or negative acknowledgement (NACK) for the portion of data is determined based on a result of the CRC. It is identified that the portion of data is to be retransmitted based on the feedback information indicating a NACK with respect to the portion of data. A retransmission mode is selected for the portion of data based on desired characteristics of the data stream, including a first mode that retransmits the portion of data on at least a first transmitter antenna while transmitting new data on at least a second transmitter antenna; and a second mode that retransmits the portion of data simultaneously on at least the first and second transmitter antennas.Type: ApplicationFiled: July 1, 2014Publication date: December 11, 2014Applicant: Inventergy, Inc.Inventors: Choo Eng YAP, Lee Ying LOH
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Publication number: 20140362945Abstract: Automatic retransmission in communications systems. In one embodiment, a portion of data is identified to be retransmitted based on feedback information indicating a negative acknowledgement (NACK) during a cyclic redundancy check (CRC) on a previous transmission of the portion of data. A retransmission mode is selected for the portion of data, from at least a first mode that retransmits the portion of data on at least a first transmitter antenna while transmitting new data on at least a second transmitter antenna, based on first desired transmission characteristics; and a second mode that retransmits the portion of data simultaneously on at least the first and second transmitter antennas, based on second desired transmission characteristics.Type: ApplicationFiled: July 1, 2014Publication date: December 11, 2014Applicant: INVENTERGY, INC.Inventors: Choo Eng YAP, Lee Ying LOH
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Patent number: 8775890Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data, which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.Type: GrantFiled: September 13, 2004Date of Patent: July 8, 2014Assignee: Inventergy, Inc.Inventors: Choo Eng Yap, Lee Ying Loh
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Patent number: 8681892Abstract: A wireless communication method by which unnecessary retransmission request is suppressed and feedback information is reduced at the same time in a MIMO communication system. The wireless communication method is provided for transmitting signals by using a plurality of antennas, and has a step of applicably selecting the group configuration of the antennas, and a step of adding data to be used for error detection to a signal to be transmitted by using the antennas, by following the results of the selection.Type: GrantFiled: June 18, 2013Date of Patent: March 25, 2014Assignee: Panasonic CorporationInventors: Lee Ying Loh, Katsuyoshi Naka
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Publication number: 20130279618Abstract: A wireless communication method by which unnecessary retransmission request is suppressed and feedback information is reduced at the same time in a MIMO communication system. The wireless communication method is provided for transmitting signals by using a plurality of antennas, and has a step of applicably selecting the group configuration of the antennas, and a step of adding data to be used for error detection to a signal to be transmitted by using the antennas, by following the results of the selection.Type: ApplicationFiled: June 18, 2013Publication date: October 24, 2013Inventors: Lee Ying Loh, Katsuyoshi Naka
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Patent number: 8488701Abstract: A wireless communication method by which unnecessary retransmission request is suppressed and feedback information is reduced at the same time in a MIMO communication system. The wireless communication method is provided for transmitting signals by using a plurality of antennas, and has a step of applicably selecting the group configuration of the antennas, and a step of adding data to be used for error detection to a signal to be transmitted by using the antennas, by following the results of the selection.Type: GrantFiled: May 4, 2012Date of Patent: July 16, 2013Assignee: Panasonic CorporationInventors: Lee Ying Loh, Katsuyoshi Naka
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Publication number: 20120287775Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.Type: ApplicationFiled: July 20, 2012Publication date: November 15, 2012Applicant: PANASONIC CORPORATIONInventors: Choo Eng YAP, Lee Ying Loh
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Publication number: 20120263250Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data, which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.Type: ApplicationFiled: June 25, 2012Publication date: October 18, 2012Applicant: PANASONIC CORPORATIONInventors: Choo Eng YAP, Lee Ying Loh
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Publication number: 20120230257Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data, which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.Type: ApplicationFiled: May 23, 2012Publication date: September 13, 2012Applicant: PANASONIC CORPORATIONInventors: Choo Eng YAP, Lee Ying LOH
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Publication number: 20120218925Abstract: A wireless communication method by which unnecessary retransmission request is suppressed and feedback information is reduced at the same time in a MIMO communication system. The wireless communication method is provided for transmitting signals by using a plurality of antennas, and has a step of applicably selecting the group configuration of the antennas, and a step of adding data to be used for error detection to a signal to be transmitted by using the antennas, by following the results of the selection.Type: ApplicationFiled: May 4, 2012Publication date: August 30, 2012Applicant: PANASONIC CORPORATIONInventors: Lee Ying Loh, Katsuyoshi Naka
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Patent number: 8194786Abstract: A wireless communication method by which unnecessary retransmission request is suppressed and feedback information is reduced at the same time in a MIMO communication system. The wireless communication method is provided for transmitting signals by using a plurality of antennas (314), and has a step of applicably selecting the group configuration of the antennas (314), and a step of adding data to be used for error detection to a signal to be transmitted by using the antennas (314), by following the results of the selection.Type: GrantFiled: July 4, 2005Date of Patent: June 5, 2012Assignee: Panasonic CorporationInventors: Lee Ying Loh, Katsuyoshi Naka
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Publication number: 20090225875Abstract: A wireless communication method by which unnecessary retransmission request is suppressed and feedback information is reduced at the same time in a MIMO communication system. The wireless communication method is provided for transmitting signals by using a plurality of antennas (314), and has a step of applicably selecting the group configuration of the antennas (314), and a step of adding data to be used for error detection to a signal to be transmitted by using the antennas (314), by following the results of the selection.Type: ApplicationFiled: July 4, 2005Publication date: September 10, 2009Applicant: MATSUSHITA ELECTRIC INDUSTRIALL CO., LTD.Inventors: Lee Ying Loh, Katsuyoshi Naka
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Publication number: 20090067528Abstract: A system for link adaptation in a MIMO-OFDM system. In this system, the V-BLAST processor (308) performs V-BLAST processing and separates receive signals for the multiple antennas of the transmitter into data streams. The vector information output section (312) sends feedback vector information obtained from V-BLAST processing to the transmitter. The adaptive bit assignment section (304) adaptively controls the number of bits to be assigned to each of the sub-carriers on different antennas, based on the feedback vector information. The adaptive power allocation section (306) adaptively allocates power to each antenna, based on the feedback vector information.Type: ApplicationFiled: November 11, 2004Publication date: March 12, 2009Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Lee Ying Loh, Choo Eng Yap
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Publication number: 20070255993Abstract: An automatic retransmission request control system in OFDM-MIMO communication system. In this system, an ACK/NACK output part (320) of a receiver transmits, to a transmitter, a feedback information of positive or negative response based on the result of a cyclic redundancy check.Type: ApplicationFiled: September 13, 2004Publication date: November 1, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTDInventors: Choo Eng Yap, Lee Ying Loh
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Patent number: RE48260Abstract: Automatic retransmission in communications systems. In one embodiment, a portion of data is identified to be retransmitted based on feedback information indicating a negative acknowledgement (NACK) during a cyclic redundancy check (CRC) on a previous transmission of the portion of data. A retransmission mode is selected for the portion of data, from at least a first mode that retransmits the portion of data on at least a first transmitter antenna while transmitting new data on at least a second transmitter antenna, based on first desired transmission characteristics; and a second mode that retransmits the portion of data simultaneously on at least the first and second transmitter antennas, based on second desired transmission characteristics.Type: GrantFiled: August 22, 2018Date of Patent: October 13, 2020Assignee: INVT SPE LLCInventors: Choo Eng Yap, Lee Ying Loh