Patents by Inventor Weisung Tsao
Weisung Tsao 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).
-
Patent number: 11979929Abstract: Embodiments of the present invention provide methods for performing multi-link operations in a wireless network. The multi-link operations can include constrained multi-link operations configured to prevent or mitigate IDC interference, for example, by preventing or delaying access to a wireless medium while data is being transmitted or received on another wireless medium.Type: GrantFiled: May 29, 2020Date of Patent: May 7, 2024Assignee: MediaTek Singapore Pte. Ltd.Inventors: Yongho Seok, Weisung Tsao, James Chih-Shi Yee, Po-Yuen Cheng, Thomas Edward Pare, Jr.
-
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
-
Patent number: 11877321Abstract: A multi-link device (MLD) monitors each of first and second links in a multi-link operation in wireless communications, with the first link being a primary link and the second link being a secondary link. The MLD obtains a transmission opportunity (TXOP) on one of the first link and the second link as a result of performing a contention-based channel access on the first link and the second link. The MLD checks channel status of the other of the first link and the second link. The MLD then transmits one or more frames on the first link but not on the second link, on the second link but not on the first link, or on both the first link and the second link synchronously, responsive to the channel status of the other link given the TXOP being obtained on the one of the first link and the second link.Type: GrantFiled: December 25, 2020Date of Patent: January 16, 2024Assignee: MediaTek Singapore Pte. Ltd.Inventors: Kai Ying Lu, Yongho Seok, Weisung Tsao, James Chih-Shi Yee
-
Patent number: 11690107Abstract: Embodiments of the present invention are drawn to a computer-implemented process for automatically synchronizing TXOPs for a multi-link device (MLD) to improve wireless network performance and prevent IDC. The novel process can be performed by a multi-link device performing a multi-link operation, and the multi-link device can act as a wireless access point or a wireless station. Independent EDCA channel access can be performed at the multi-link device on a first wireless link and a second wireless link, and a back-off counter for a first wireless STA and a back-off counter for a second wireless STA are set according to the independent EDCA channel access. A TXOP is synchronously obtained on the first wireless link and the second wireless link responsive to the back-off counters expiring, and a multi-link operation is performed at the MLD using the first wireless link and the second wireless link during the TXOP.Type: GrantFiled: March 31, 2021Date of Patent: June 27, 2023Assignee: MEDIATEK SINGAPORE PTE. LTDInventors: Yongho Seok, Weisung Tsao, James Chih-Shi Yee, Po-Yuen Cheng
-
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
-
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
-
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
-
Publication number: 20210315025Abstract: Embodiments of the present invention a computer-implemented process for automatically synchronizing TXOPs for a multi-link device (MLD) to improve wireless network performance and prevent IDC is depicted according to embodiments of the present invention. The process can be performed by a multi-link device performing a multi-link operation, and the multi-link device can act as a wireless access point or a wireless station. The MLD includes a first wireless station (STA) associated with a first wireless link and a second wireless STA associated with a second wireless link. The MLD can include more wireless STAs for communicating over different wireless links.Type: ApplicationFiled: March 31, 2021Publication date: October 7, 2021Inventors: Yongho Seok, Weisung Tsao, James Chih-Shi Yee, Po-Yuen Cheng
-
Publication number: 20210212118Abstract: A multi-link device (MLD) monitors each of first and second links in a multi-link operation in wireless communications, with the first link being a primary link and the second link being a secondary link. The MLD obtains a transmission opportunity (TXOP) on one of the first link and the second link as a result of performing a contention-based channel access on the first link and the second link. The MLD checks channel status of the other of the first link and the second link. The MLD then transmits one or more frames on the first link but not on the second link, on the second link but not on the first link, or on both the first link and the second link synchronously, responsive to the channel status of the other link given the TXOP being obtained on the one of the first link and the second link.Type: ApplicationFiled: December 25, 2020Publication date: July 8, 2021Inventors: Kai Ying Lu, Yongho Seok, Weisung Tsao, James Chih-Shi Yee
-
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
-
Publication number: 20200383156Abstract: Embodiments of the present invention provide systems and methods for accessing multiple wireless links simultaneously during a transmission opportunity granted to a wireless STA to increase throughput of the wireless network while advantageously preventing or mitigating the IDC interference caused by simultaneous transmission and reception of data over multiple wireless bands. According to some embodiments, a wireless STA can be prevented from accessing a wireless medium to transmit data to a peer wireless STA when the peer wireless STA is already transmitting data, or may be transmitting data, or is scheduled to transmit data in the immediate future. According to some embodiments, access to a wireless medium for performing a multi-link operation can be prevented responsive to IDC interference.Type: ApplicationFiled: May 29, 2020Publication date: December 3, 2020Inventors: Yongho Seok, Weisung Tsao, James Chih-Shi Yee, Po-Yuen Cheng, Thomas Edward Pare, JR.
-
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
-
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
-
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
-
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
-
Publication number: 20070198870Abstract: A multi-processor system comprises a clock generator, a clock controller, a main processor, a plurality of co-processors and an interrupt control interface. Because the main processor and the co-processors need not work together to deliver the processing result, the multi-processor system may be designed that each processor in the multi-processor system is independently switched to operate at lower clock or power down completely according to the feedback of the hardware performance detection for each processor when the whole system is in active usage. This means on-demand power saving for the multi-processor system, so as to save power greatly.Type: ApplicationFiled: July 31, 2006Publication date: August 23, 2007Applicant: ITE TECH. INC.Inventors: Hown Cheng, Yan Wu, Weisung Tsao, Wei-Lung Chang