Patents by Inventor Chung-Ta Ku
Chung-Ta Ku 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: 11936480Abstract: Methods and apparatus for enabling data transmission using HARQ in IEEE 802.11 systems are described. A method is disclosed, performed by a transmitting device, comprising computing a plurality of redundancy frames based on a plurality of data frames, transmitting the plurality of data frames to a receiving device, and transmitting a set of the plurality of redundancy frames to the receiving device determined by the transmitting device in response to receiving acknowledgement. One embodiment includes a method determining failed data frames of the plurality of data frames, requesting a set of the plurality of redundancy frames, and recovering the failed data frame using a decoder employing hard decision inputs. Other embodiments include an apparatus in a receiver device implementing the method of decoding the failed data frames using a decoder employing soft decision inputs.Type: GrantFiled: October 20, 2020Date of Patent: March 19, 2024Assignee: MediaTek Singapore Pte. Ltd.Inventors: Samat Shabdanov, Po-Yuen Cheng, Chung-Ta Ku, Weisung Tsao
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Publication number: 20230269592Abstract: An apparatus implemented in a master access point (AP) selects at least one basic service set (BSS) from one or more neighbor BSSs to form a spatial reuse group (SRG). The apparatus then performs coordinated spatial reuse (CSR) in the SRG with a set of overlapping basic service set (OBSS) power detection (PD) parameters.Type: ApplicationFiled: April 22, 2023Publication date: August 24, 2023Inventors: James June-Ming Wang, Chung-Ta Ku, Gabor Bajko, Gary A. Anwyl, Shuling Feng, Jianhan Liu, Yongho Seok, Po-Yuen Cheng, James Chih-Shi Yee, Thomas Edward Pare, JR.
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Patent number: 11729666Abstract: Embodiments of the present invention provide a method and apparatus for enhanced data retransmission based on log-likelihood ratio (LLR) combining in WLAN. According to some embodiments, packets can be retransmitted using a modified transmission scheme. Codewords are associated with cyclic redundancy checks (CRCs) for detecting errors, and a subsequent packet is received that includes data that can be used to correct the error. For example, each packet can be encoded for both error detection and correction, and the retransmission mechanism can be adapted to the error rate. The retransmission scheme is improved by utilizing an LLR combining scheme, transmit diversity, and modified ACK methods.Type: GrantFiled: January 5, 2022Date of Patent: August 15, 2023Assignee: Mediatek Singapore PTE. LTD.Inventors: Jianhan Liu, Yongho Seok, Chung-ta Ku, Thomas Edward Pare, Jr.
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Patent number: 11671837Abstract: An apparatus implemented in a master access point (AP) selects at least one basic service set (BSS) from one or more neighbor BSSs to form a spatial reuse group (SRG). The apparatus then performs coordinated spatial reuse (CSR) in the SRG with a set of overlapping basic service set (OBSS) power detection (PD) parameters.Type: GrantFiled: October 8, 2020Date of Patent: June 6, 2023Assignee: MediaTek Singapore Pte. Ltd.Inventors: James June-Ming Wang, Chung-Ta Ku, Gabor Bajko, Gary A. Anwyl, Shuling Feng, Jianhan Liu, Yongho Seok, Po-Yuen Cheng, James Chih-Shi Yee, Thomas Edward Pare, Jr.
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Patent number: 11612002Abstract: Embodiments of the present invention provide systems and methods for synchronous independent channel access in a wireless network. The synchronous independent channel access can be performed by a wireless station having multiple transceivers for simultaneous communication over multiple wireless bands. A wireless station can connect wirelessly to a wireless access point to access a first primary wireless band during a transmission opportunity, and can use early access on a second primary wireless band without receiving a transmission opportunity. The transmission and reception of data frames over the different primary channels are synchronized to prevent or mitigate inter-channel interference. According to some embodiments, the channels are synchronized using back-off procedures and/or padding to align the ending time of transmitted and received data frames, for example.Type: GrantFiled: March 24, 2020Date of Patent: March 21, 2023Assignee: MEDIATEK SINGAPORE PTE. LTD.Inventors: Yongho Seok, Jianhan Liu, James Chih-Shi Yee, Thomas Edward Pare, Jr., Chung-Ta Ku, Jr., Weisung Tsao, Po-Yuen Cheng
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Publication number: 20230050633Abstract: A method and an apparatus for handling coordinated association in a wireless network with multiple access points are described. A method comprises receiving network parameters, determining a plurality of AP-STA associations, and sending the plurality of associations to the STAs. An apparatus includes controlling, managing, and optimization modules implementing the method of handling coordinated association in a wireless network.Type: ApplicationFiled: August 2, 2022Publication date: February 16, 2023Applicant: MediaTek Singapore Pte. Ltd.Inventors: Samat Shabdanov, Chien-Fang Hsu, Po-Yuen Cheng, Weisung Tsao, Chung-Ta Ku
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Publication number: 20220264592Abstract: Embodiments of the present invention substantially mitigate or prevent in-device and inter-device interference (e.g., AACI) by grouping wireless stations associated with an AP according to their estimated physical proximity with each other. The transmissions to/from STAs within a group can be coordinated so that a wireless transmission does not interfere with the wireless reception of another STA within the same group. In this way, desense is avoided and the wireless reception can be performed efficiently.Type: ApplicationFiled: February 15, 2022Publication date: August 18, 2022Inventors: Chung-Ta Ku, Weisung Tsao, Po-Yuen Cheng, Samet Shabdanov
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Publication number: 20220132367Abstract: Embodiments of the present invention provide a method and apparatus for enhanced data retransmission based on log-likelihood ratio (LLR) combining in WLAN. According to some embodiments, packets can be retransmitted using a modified transmission scheme. Codewords are associated with cyclic redundancy checks (CRCs) for detecting errors, and a subsequent packet is received that includes data that can be used to correct the error. For example, each packet can be encoded for both error detection and correction, and the retransmission mechanism can be adapted to the error rate. The retransmission scheme is improved by utilizing an LLR combining scheme, transmit diversity, and modified ACK methods.Type: ApplicationFiled: January 5, 2022Publication date: April 28, 2022Inventors: Jianhan LIU, Yongho SEOK, Chung-ta KU, Thomas Edward PARE, JR.
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Patent number: 11252603Abstract: Embodiments of the present invention provide a method and apparatus for enhanced data retransmission based on log-likelihood ratio (LLR) combining in WLAN. According to some embodiments, packets can be retransmitted using a modified transmission scheme. Packets that are received with an error are stored, and a subsequent packet is received that includes data that can be used to correct the error. For example, each packet can be encoded for both error detection and correction, and the retransmission mechanism can be adapted to the error rate. The retransmission scheme is improved by utilizing an LLR combining scheme, transmit diversity, and modified ACK methods.Type: GrantFiled: September 13, 2019Date of Patent: February 15, 2022Assignee: MEDIATEK SINGAPORE PTE. LTD.Inventors: Jianhan Liu, Yongho Seok, Chung-Ta Ku, Thomas Edward Pare, Jr.
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Publication number: 20210126743Abstract: Methods and apparatus for enabling data transmission using HARQ in IEEE 802.11 systems are described. A method is disclosed, performed by a transmitting device, comprising computing a plurality of redundancy frames based on a plurality of data frames, transmitting the plurality of data frames to a receiving device, and transmitting a set of the plurality of redundancy frames to the receiving device determined by the transmitting device in response to receiving acknowledgement. One embodiment includes a method determining failed data frames of the plurality of data frames, requesting a set of the plurality of redundancy frames, and recovering the failed data frame using a decoder employing hard decision inputs. Other embodiments include an apparatus in a receiver device implementing the method of decoding the failed data frames using a decoder employing soft decision inputs.Type: ApplicationFiled: October 20, 2020Publication date: April 29, 2021Inventors: Samat Shabdanov, Po-Yuen Cheng, Chung-Ta Ku, Weisung Tsao
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Publication number: 20210120427Abstract: An apparatus implemented in a master access point (AP) selects at least one basic service set (BSS) from one or more neighbor BSSs to form a spatial reuse group (SRG). The apparatus then performs coordinated spatial reuse (CSR) in the SRG with a set of overlapping basic service set (OBSS) power detection (PD) parameters.Type: ApplicationFiled: October 8, 2020Publication date: April 22, 2021Inventors: James June-Ming Wang, Chung-Ta Ku, Gabor Bajko, Gary A. Anwyl, Shuling Feng, Jianhan Liu, Yongho Seok, Po-Yuen Cheng, James Chih-Shi Yee, Thomas Edward Pare, JR.
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Publication number: 20200314920Abstract: Embodiments of the present invention provide systems and methods for synchronous independent channel access in a wireless network. The synchronous independent channel access can be performed by a wireless station having multiple transceivers for simultaneous communication over multiple wireless bands. A wireless station can connect wirelessly to a wireless access point to access a first primary wireless band during a transmission opportunity, and can use early access on a second primary wireless band without receiving a transmission opportunity. The transmission and reception of data frames over the different primary channels are synchronized to prevent or mitigate inter-channel interference. According to some embodiments, the channels are synchronized using back-off procedures and/or padding to align the ending time of transmitted and received data frames, for example.Type: ApplicationFiled: March 24, 2020Publication date: October 1, 2020Inventors: Yongho SEOK, Jianhan LIU, James Chih-Shi YEE, Thomas Edward PARE, JR., Chung-Ta KU, JR., Weisung TSAO, Po-Yuen Cheng
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Publication number: 20200112878Abstract: Embodiments of the present invention provide a method and apparatus for enhanced data retransmission based on log-likelihood ratio (LLR) combining in WLAN. According to some embodiments, packets can be retransmitted using a modified transmission scheme. Packets that are received with an error are stored, and a subsequent packet is received that includes data that can be used to correct the error. For example, each packet can be encoded for both error detection and correction, and the retransmission mechanism can be adapted to the error rate. The retransmission scheme is improved by utilizing an LLR combining scheme, transmit diversity, and modified ACK methods.Type: ApplicationFiled: September 13, 2019Publication date: April 9, 2020Inventors: Jianhan LIU, Yongho SEOK, Chung-Ta KU, Thomas Edward PARE, JR.
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Patent number: 10523377Abstract: A wireless communication method includes setting at least one specific subfield of a control field in a report frame, and transmitting the report frame to an access point for communicating with the access point on uplink (UL) Orthogonal Frequency-Division Multiple Access (OFDMA). In addition, the wireless communication method is performed by a program code loaded from a storage device of a wireless communication device and executed by a processor of the wireless communication device.Type: GrantFiled: August 29, 2017Date of Patent: December 31, 2019Assignee: MEDIATEK INC.Inventors: Chia-Hung Tsai, Weisung Tsao, Shihchieh Lee, Cheng-Hsi Marik Hsiao, Chung-Ta Ku, Po-Yuen Cheng
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Publication number: 20180069670Abstract: A wireless communication method includes setting at least one specific subfield of a control field in a report frame, and transmitting the report frame to an access point for communicating with the access point on uplink (UL) Orthogonal Frequency-Division Multiple Access (OFDMA). In addition, the wireless communication method is performed by a program code loaded from a storage device of a wireless communication device and executed by a processor of the wireless communication device.Type: ApplicationFiled: August 29, 2017Publication date: March 8, 2018Inventors: Chia-Hung Tsai, Weisung Tsao, Shihchieh Lee, Cheng-Hsi Marik Hsiao, Chung-Ta Ku, Po-Yuen Cheng
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Publication number: 20180042022Abstract: A wireless communication system includes an access point and at least one station. The access point sends a trigger frame including power information for indicating a targeted receive power of data sent from the at least one station to the access point and an output power of the target frame. Each of the at least one station sends data to the access point by referring to the targeted power.Type: ApplicationFiled: August 2, 2017Publication date: February 8, 2018Inventors: Weisung Tsao, Shihchieh Lee, Chung-Ta Ku, Chia-Hung Tsai, Cheng-Hsi Marik Hsiao, Po-Yuen Cheng